southern regional power committee · 4.1 mop vide letter dated 10.06.2016 (annexure-iii) had...

Agenda for 29th TCC &30th SRPC Meetings to be held on 26th & 27th August 2016

CONTENTS 1. INTRODUCTION ............................................................................................................................................... 3

2. CONFIRMATION OF THE MINUTES OF 28th TCC & 29th SRPC MEETINGS ........................................................ 3

3. MEMBERSHIP TO RPC ..................................................................................................................................... 3

4. FLEXIBILITY IN UTILIZATION OF DOMESTIC COAL FOR REDUCING COST OF POWER GENERATION ............... 4

5. TERMS OF REFERENCE FOR RENEWABLE INTEGRATION – TASK FORCE ........................................................ 5

6. DETERMINATION OF TRANFER PRICE OF LIGNITE IN RESPECT OF NLC MINES FOR THE PERIOD 2014-19 –

REQUEST FOR MODIFICATIONS IN THE NOTIFICATION OF MOC .................................................................... 5

7. PREPARATION FOR MEETING REVISED ENVIRONMENT NORMS AS PER ENVIRONMENT (PROTECTION)

AMEN DMENT RULES, 2015 ............................................................................................................................ 6

8. ROADMAP TO OPERATIONALISE RESERVES IN THE COUNTRY ....................................................................... 6

9. COMPLIANCE OF ORDER OF HON’BLE CERC IN PETITION NO. 420/MP/2014 – IN RESPECT OF LVRT AND

OTHER PROVISIONS OF CEA/CERC REGULATIONS ......................................................................................... 8

10. LOW VOLTAGES .............................................................................................................................................. 9

11. PATROLLING / MAINTENANCE OF CRITICAL LINES AND SUBSTATIONS ....................................................... 11

12. CONTINGENCY OF 400 kV NELLORE - NELLORE PS LINES ............................................................................. 11

13. STATUS OF GENERATION IN GENERATING STATIONS .................................................................................. 12

14. REVIEW OF ULDC / SCADA/COMMUNICATION ............................................................................................ 13

15. TTC/ATC ........................................................................................................................................................ 15

16. UPCOMING TRANSMISSION SYSTEM ........................................................................................................... 16

17. UPCOMING RENEWABLE PROJECTS AND THEIR INTEGRATION WITH TRANSMISSION NETWORK ............. 29

18. NEW PROJECTS OF NTPC, NLC, NPCIL, JOINT VENTURE & UMPP ................................................................ 29

19. NEW PROJECTS OF STATE SECTOR & IPP ...................................................................................................... 31

20. EMERGENCY RESTORATION SYSTEM (ERS) .................................................................................................. 32

21. PROGRESS OF BUS/LINE REACTORS TO BE COMMISSIONED IN SR .............................................................. 33

22. OUTSTANDING DUES BETWEEN SOUTHERN AND WESTERN REGIONS ....................................................... 36

23. NON-AVAILING OF OCC APPROVED SHUTDOWN ......................................................................................... 37

24. SPARE ICT AND REACTOR PLACEMENT AND USAGE PROCEDURE ............................................................... 38

25. IEGC RELATED ISSUES REQUIRING ATTENTION/ACTION .............................................................................. 39

26. AUGMENTATION OF TALCHER-II TRANSMISSION SYSTEM .......................................................................... 50

27. INCLUSION OF DRAWAL OF MAHE IN REA ................................................................................................... 51

28. SHARING OF TRANSMISSION CHARGES OF TRANSMISSION ASSETS OF NATIONAL IMPORTANCE ............. 51

29. APPROACH BEING TAKEN BY CTU FOR RESERVING THE TRANSMISSION CAPACITY FOR THE CUSTOMERS

WHO HAVE AVAILED LTA WITHOUT IDENTIFYING BENEFICIARIES .............................................................. 52

Agenda for 29th TCC &30th SRPC Meetings to be held on 26th & 27th August 2016

30. STATUS OF PHASE I AND PHASE II OF PROTECTION AUDIT RECOMMENDATIONS ...................................... 53

31. GRID OPERATION .......................................................................................................................................... 55

32. THOROUGH REVIEW OF ALL THE DRAWAL POINTS OF STATES FOR DRAWAL COMPUTATIONS ................. 62

33. TPCIL REQUEST TO EXEMPT DEVIATION CHARGES ...................................................................................... 62

34. SCHEDULING OF NTPC RAMAGUNDAM SOLAR POWER PLANT (10 MW) .................................................... 62

35. GRID STUDY COMMITTEE (TASK- 2) AUDIT PROGRESS DETAILS .................................................................. 62

36. IMPLEMENTATION OF PROTECTION SUITE / PROTECTION MANAGEMENT SYSTEM (PMS) FOR SOUTHERN

REGION ......................................................................................................................................................... 63

37. OVER VOLTAGE RELAY (OVR) GRADINGS FOR 400 KV TRANSMISSION LINES OF THE SOUTHERN REGION 64

38. PROTECTION SYSTEM ANALYSIS GROUP (PSAG-15) MEETING HELD AT NTPL, TUTICORIN ......................... 64

39. SPECIAL MEETING ON ISSUES RELATING TO RECENT GRID DISTURBANCES IN GAJUWAKA – SIMHADRI -

KALPAKA CORRIDOR HELD ON 04TH MAY, 2016 AT SRPC, BENGALURU ....................................................... 65

40. SPECIAL MEETING ON PENDING PROTECTION ISSUES OF M/S KPCL HELD ON 03.06.2016 AT SRPC,

BENGALURU .................................................................................................................................................. 65

41. REVIEW OF ISLANDING SCHEMES OF SOUTHERN REGION .......................................................................... 66

42. PROTECTION SYSTEM ANALYSIS GROUP (PSAG-16) MEETING HELD AT AMBEWADI SS HELD ON

18.07.2016 .................................................................................................................................................... 67

43. PENDING IMPLEMENTATION OF RECOMMENDATIONS OF PROTECTION COORDINATION SUB-COMMITTEE

(PCSC) OF SRPC ............................................................................................................................................. 67

44. STUDY PROGRAMME ON THE INTEGRATION OF RENEWABLE ENERGY RESOURCES INTO THE GRID ......... 67

45. IEGC, FOURTH AMENDMENT REGULATIONS 2016- TECHNICAL MINIMUM OF GENERATORS /

COMPENSATION PROCEDURE FOR SHR & AEC ............................................................................................ 67

46. SCHEDULING/OPERATIONAL ISSUES IN RESPECT OF NP KUNTA UMSPPS – 1 ............................................. 67

47. COMMERCIAL COMMITTEE ISSUES .............................................................................................................. 68

48. REVIVAL OF UNITS AT SHARAVATHI GENERATING STATION ........................................................................ 69

49. REFERENCE FROM MNRE REGARDING COMPILATION OF DATA FOR MEETING RENEWABLE ENERGY

TARGETS OF 175 GW BY 2020 ...................................................................................................................... 70

50. PROVIDING INFORMATION REGARDING COMMISSIONING AND DECLARATION OF COD OF POWER

GENERATING UNITS ...................................................................................................................................... 70

51. FORECASTING, SCHEDULING AND DEVIATION SETTLEMENT OF WIND AND SOLAR GENERATING STATIONS

AT THE STATE LEVEL ..................................................................................................................................... 70

52. SKILL PLAN FOR POWER SECTOR BASED ON THE ASSESSED SKILL GAP IN THE SECTOR .............................. 71

53. REIMBURSEMENT OF SRPC EXPENDITURE ................................................................................................... 71

54. DATE & VENUE OF THE NEXT SRPC MEETING .............................................................................................. 71

Agenda for 29th TCC & 30th SRPC Meetings to be held on 26th /27th Aug. 2016 Page 3 of 71

SOUTHERN REGIONAL POWER COMMITTEE

BENGALURU

AGENDA FOR THE 29th

TCC & 30th

SRPC MEETINGS TO BE HELD ON 26th

& 27th

AUGUST 2016 AT CHENNAI

1. INTRODUCTION

The 29th

Meeting of Technical Co-ordination Committee & 30th

Meeting of Southern

Regional Power Committee (SRPC) will be held on 26th

& 27th

August 2016 at Chennai.

2. CONFIRMATION OF THE MINUTES OF 28th

TCC & 29th

SRPC MEETINGS

2.1 Minutes of the 28th

TCC Meeting held on 4th

March 2016 in Vishakhapatnam were

circulated vide letter dated 26th

April 2016. Minutes of the Meeting may kindly be

confirmed.

2.2 Minutes of the 29th

SRPC Meeting held on 5th

March 2016 in Vishakhapatnam were

circulated vide letter dated 19th

May 2016. Minutes of the Meeting may kindly be

confirmed.

For SRPC consideration

3. MEMBERSHIP TO RPC

3.1 Special Invitee /Membership status to M/s.PTC in RPCs

3.1.1 In the 5th

NPC Meeting held on 08th

April 2016 (MoM at Annexure-I), the following was

noted:

Grid Management Division, CEA had informed that M/s.PTC had requested for Special

Invitee / Membership status in all RPCs and had proposed deliberation on this issue in

the NPC meeting.

Chairperson, CEA had opined that it should be as per GoI resolution. For ERPC, due to

international transactions, special provision can be made but the approval of MoP

through CEA can be sought.

After detailed deliberations, it was agreed that the issue of membership for Traders

would be deliberated in respective RPCs and outcome thereof would be communicated

to CEA for taking up the matter with MoP.

3.1.2 SRPC may kindly deliberate.

3.2 Membership of IPPs in RPCs

3.2.1 The number of IPPs having more than 1000 MW installed capacity is increasing. In the 5th

NPC meeting held on 08th

April 2016 (refer Annexure-I), the following was noted:

WRPC had proposed to enhanced the limit of 1,000 MW to 2,000 MW for

membership of IPP in RPCs. NRPC had suggested that instead of allowing them

RPC membership the IPPs might be included in subcommittee like TCC/OCC.


SRPC stated that generators were playing important role in various defense

mechanisms like FGMO, PSS tuning etc. their participation in RPC needed to be

reviewed.

NPC had suggested that the issue be deliberated first in respective RPCs and after

evolving a common view, the same would be referred to MoP for amendment in

Resolution.


3.3 Request of Adani Transmission Limited for inclusion as a Member in SRPC

3.3.1 Adani Transmission Limited vide their letter dated 05th

July 2016 (Annexure-II) have

informed that they are one of the largest transmission company operating in the private

sector in India and own, operate and maintain more than 5,000 ckms of Transmission lines

ranging from 400 kV to 765 kV. Additional projects of 2,000 ckms spanning across states

have been awarded to them through TBCB process. Highlighting the need of private

players in transmission planning /TBCB, ATL has requested to be included as a Member

in SRPC.


3.4 Membership of IL&FS and HNPCL to SRPC

3.4.1 IL&FS and HNPCL (2nd

Unit COD yet to be confirmed by AP) are meeting the eligibility

for Membership to SRPC.


4. FLEXIBILITY IN UTILIZATION OF DOMESTIC COAL FOR REDUCING COST

OF POWER GENERATION

4.1 MoP vide letter dated 10.06.2016 (Annexure-III) had informed that on 4th

May 2016

Cabinet had approved proposal of Ministry of Power for flexibility in utilization of domestic

coal for reducing cost of power generation. Presently, share of generation from coal based

power plants is about 78 % of the total generation in the country. These coal based power

plants are supplied coal against the plant specific Fuel Supply Agreement (FSA). There are

some power plants which generate cheaper power than others. There is scope for utilization

of coal in such power plants to achieve overall reduction in cost of generation.

4.2 In this regard, following mechanism for allowing flexibility in utilization of domestic coal

amongst power generating stations to reduce the cost of power generation had been

approved:

All long term coal linkages of individual Thermal Power stations of specific State (State

would include Union Territories) to be assigned to respective State or State notified

agency. Similarly, all long term coal linkages of individual General Generating Stations

shall be assigned to the company owning the Central Generating Stations (CGSs),


instead of individual Thermal Power stations to enable efficient coal utilization amongst

end use power generating stations.

Annual Contracted Quantity (ACQ) of each individual coal linkages (as per respective

Fuel Supply Agreements) to be aggregated as consolidated ACQ for each State or the

company owning the Central generating stations, as the case may be. A supplementary

agreement shall be signed for each State /Company owning the CGS for such

consolidated ACQ and the terms and conditions of supplementary agreement shall be

applicable on the aggregated ACQ of State or Central generating stations.

There shall be flexibility in use of such coal amongst the generating stations of state

owned utilities, plans of other state power utilities, company owning the Central

Generating stations and IPPs, amongst each others as per methodology issued by CEA.

Mechanism shall initially be rolled out for Central Generating Companies and State

Power Utilities. Ministry of Power shall separately notify the methodology for use of

transferred coal in IPPs generating stations.

Methodology for flexibility in utilization of domestic coal for reducing the cost of power

generation prepared in consultation with all the Stakeholders had been issued by CEA

and also available on the CEA website.

5. TERMS OF REFERENCE FOR RENEWABLE INTEGRATION – TASK FORCE

5.1 In the 29th

Meeting of SRPC, several issues had been highlighted in respect of renewable

integration since there was huge paradigm shift due to large volumes of renewable were

planned to be integrated into the grid. Impact of renewable integration on system

operation, balancing, infirm nature etc., was not fully known. Broader issues would be

needed to be studied in greater depth. In Europe, when renewable integration took place,

they had tried to use pan European grid like hydro reserves of Scandinavian countries to

balance solar and wind variability. So there would be a need to look into balancing power

from hydro, gas etc. with Southern Region perspective. Backing down of renewables could

not be a good option. Grid operational, commercial and strategic issues would be required

to be addressed. The manner in which renewables are getting integrated, all States could get

affected.

5.2 It had been agreed that a Task Force at TCC level could flag issues and come out with Term

of Reference and possibly get it examined through a Consultant.

5.3 This issue is scheduled to be deliberated in the Special Meeting of TCC to be held on 2nd

August 2016.

6. DETERMINATION OF TRANFER PRICE OF LIGNITE IN RESPECT OF NLC

MINES FOR THE PERIOD 2014-19 – REQUEST FOR MODIFICATIONS IN THE

NOTIFICATION OF MOC

6.1 CMD, TANGEDCO vide letter dated 16th

June 2016 (Annexure-IV) addressed to Secretary,

MoC had requested for modification of Notification on ‘Guidelines for fixation of transfer

price of lignite’ notified by MoC vide Order No. 228012/1/2014-CA-II dated 02.01.2015

keeping in view issues highlighted in the letter. Notification included three items viz, 1.

Removal of over burden charges, 2. Inclusion of 15 days lignite inventory under working


capital and 3. Shifting from Net Block to Gross block for the tariff period 2014-19. The

issues in respect of these had been brought to attention.It had been requested to consider the

same as presently the cost of lignite is more than cost of coal (at mine head and also at the

powerhouse end) even though its calorific value is comparatively less than coal. This

increases the cost of energy from Neyveli stations. Cost thus arrived is prohibitive and does

not come under merit order dispatch.

7. PREPARATION FOR MEETING REVISED ENVIRONMENT NORMS AS PER

ENVIRONMENT (PROTECTION) AMEN DMENT RULES, 2015

7.1 In the 29th

Meeting of SRPC, it had been noted that CEA had requested to furnish details of

preparedness and action plan in order to comply with revised water consumption and

emission norms by existing as well as new thermal units (to be installed from 01.01.2017

onwards) as per Environment (Protection) Amendment Rules, 2015 notified by Ministry of

Environment, Forest & Climate Change (MOEF & CC) (Gazette Notification dated

07.12.2015). SRPC vide letter dated 20.01.2016 had communicated the same to the

concerned utilities. MOEF guidelines had classified thermal generators into three categories

with different norms. The three classes were prior to 31st December 2003, 1

st April 2004 to

31st December 2016 and beyond 1

st January 2017. Existing as well as new plants were

required to meet the standards by the stipulated time lines. SLDCs had been requested to

kindly take up the matter with thermal power plants in their state. Information in this regard

was kindly to be arranged to be furnished to CEA with a copy to SRPC.

7.2 In the Sub Committee Meetings the following had been noted :

Neyveli TS I, TS II, CEPL, KSEBL, TPCIL and NCTPS St-II had submitted the

information.

APTRANSCO had informed that APGENCO had submitted the details to their

management and details would be furnished.

NTPC had informed that they had submitted the details to their Corporate and the

same would be furnished to CEA for all NTPC stations.

NTECL, Vallur had informed that draft had been submitted to Corporate and they

would furnish the information.

TSTRANSCO informed that TSGENCO was studying the issue internally.

NLC TS I Exp & KPCL had informed that they would furnish the information.

8. ROADMAP TO OPERATIONALISE RESERVES IN THE COUNTRY

8.1 In the 29th

Meeting of SRPC it was noted that Hon’ble CERC vide Order dated 13.10.2015

on Petition No. 11/SM/2015 in the matter of Roadmap to operationalize Reserves in the

country had directed as follows:

(b) The Commission reiterates the need for mandating Primary Reserves as well as

Automatic Generation Control (AGC) for enabling Secondary Reserves.


(i) All generating stations that are regional entities must plan to operationalise AGC along

with reliable telemetry and communication by 1st April, 2017. This would entail a one-

time expense for the generators to install requisite software and firmware, which could

be compensated for. Communication infrastructure must be planned by the CTU and

developed in parallel, in a cost-effective manner.

(ii) On the other hand, National/Regional/State Load Dispatch Centres

(NLDC/RLDCs/SLDCs) would need technical upgrades as well as operational

procedures to be able to send automated signals to these generators. NLDC /RLDCs

and SLDCs should plan to be ready with requisite software and procedures by the same

date.

(iii) The Central Commission advises the State Commissions to issue orders for intra-state

generators in line with this timeline as AGC is essential for reliable operation of India’s

large inter-connected grid.

(c) To start with, a regulated framework in line with the Ancillary Services Regulations

would need be evolved for identification and utilizing of spinning reserves and

implemented with effect from 1st April, 2016. This framework may continue till 31

st

March, 2017.

……………

(d) In the long term, however, a market based framework is required for efficient provision

of secondary reserves from all generators across the country. For this, NLDC/POSOCO

is directed to commission a detailed study through a consultant and suggest a proposal

to the Commission for implementation by 1st April, 2017, giving due consideration to

the experience gained in the implementation of Spinning Reserves w.e.f. 1st April, 2016.

8.2 In the earlier Meeting the following was noted:

NLDC had informed that they had conducted regional level workshop to create

awareness on the implementing process. AGC issues were being looked into by the

Expert Committee of Members. Concept paper on operationalization of reserves has

been submitted to Hon’ble Commission. Issue regarding implementation of reserves

from 1st April 2016 was discussed and it was noted that each RLDC would compute the

ACE at the regional level which would be displayed on the website. Regional entity

generators would be required to take appropriate action. They had sought some more

time from Hon’ble CERC for operationalizing the reserves since many other issues such

as telemetry etc., were to be addressed. NTPC was responding positively and the

process of transmitting signals to the station as a pilot project was being contemplated in

each region. Changes in generators side controls were required and NTPC was taking a

lead in it.

SRPC had noted that sensitization and more interaction with SR utilities was required

and NLDC/SRLDC were requested for needful action in this regard.


9. COMPLIANCE OF ORDER OF HON’BLE CERC IN PETITION NO. 420/MP/2014

– IN RESPECT OF LVRT AND OTHER PROVISIONS OF CEA/CERC

REGULATIONS

9.1 Three Meetings have been held so far for compliance of Hon’ble CERC’s Order in Petition

No.420/MP/2014 in respect of LVRT and other provisions of CEA/CERC Regulations. No

tangible progress is observed though Hon’ble Commission has specified time lines for a

number of actionable points for various entities.

Following issues merit kind attention for ensuring action for compliance:

Submission of data as per Format A & B annexed with MoM of 1st Meeting (held on

05.02.2016).

Nomination of Nodal Officer from APSLDC was pending. Ensuring participation of

Nodal Officers in Special Meetings.

STU/SLDC (except TSSLDC) to call for a meeting with Wind Developers.

STU/SLDC to ensure strict compliance of CEA’s Connectivity Regulations for all

WTGs commissioned after 15.04.2014.

STU/SLDC to ensure strict compliance of LVRT feature for all Solar Generators

connected above 11 kV (whose NIT was not issued by 05.01.2016).

SLDCs to prepare quarterly reports and submit to SRPC with regard to monitoring of

installation and performance of LVRT installed on existing WTGs.

STUs to study line loading in their systems to ensure N-1 compliance and submit reports

in this regard to CEA by 10.3.2016.

STU/SLDCs would communicate to the Wind Developers for setting the characteristics

of LVRT feature (and other provisions of CEA Regulations) as envisaged in CEA

Connectivity Regulations within end of July 2016. Wind Developers needed to certify

the same by end of August 2016. Status on this need to be covered in the quarterly

reports.

PMU may be required at Wind pooling stations and Wind Developers/STU/DISCOMs

could take pro-active steps in this regard.

STU/SLDC to approach respective SERC’s for the following:

To make suitable provisions in their relevant regulations or through orders to provide

for mandatory installation of LVRT in WTGs which fall within their jurisdiction.

To make suitable provisions in their regulations and through orders to ensure that

solar/wind generators provide real time data to SLDCs as per the provisions of Grid

Code. SLDCs to ensure availability of data in respect of real time data from their Data

Acquisition Systems of solar/wind generators in SCADA systems to respective

RLDCs as per the provisions of the Grid Code.

To issue appropriate regulations/orders to align with the provisions of the Grid Code in

respect of forecasting and scheduling for intra-State solar/wind generators and demand

estimation by SLDCs.

CTU and STUs to make provisions in this regard in their Connection Agreements to

ensure that wind energy generators comply with the provisions of CEA Technical

Standards for Connectivity Regulations for grid connectivity before granting

connectivity to the grid.


9.2 SRLDC vide letter dated 15.07.2016 (Annexure-V) had taken up with CEA in this regard.

9.3 The issue is scheduled to be deliberated in the Special TCC Meeting to be held on

02.08.2016.

10. LOW VOLTAGES

10.1 A Special Meeting on low voltages was held on 18th

April 2016 at SRPC, Bengaluru

(Minutes available at SRPC website). After deliberations, the following had been

recommended:

KSEBL/TANTRANSCO/KPTCL to implement UVR scheme and settings to be in

place as recommended by 2nd

May 2016 at the following locations/nodes and furnish

compliance report. In case not implemented by 2nd

May 2016, non-compliance

messages would be issued by SRLDC.

Kerala: Trichur, Palakkad & Kochi

Tamil Nadu: Udumalpet, Salem & Hosur

Karnataka: Nelamangala, Somanahalli, Hoody and Bidadi

UVRs should not be bypassed or kept out of service. IEGC clause 5.2 (t) was referred

‘All Users, CTU and STUs shall provide adequate voltage control measures through

voltage relay as finalized by RPC, to prevent voltage collapse and shall ensure its

effective application to prevent voltage collapse/ cascade tripping…’

Physical Regulatory Procedure as enumerated in the minutes was agreed for

implementation. Step 4 was a critical step and thus SLDCs needed to take action to

avoid any situation which would compel SRLDC to take such step.

In case Specific instructions for opening 220/230 kV and below lines were not adhered

by SLDCs it would be deemed as violation of provisions of IEGC/EA 2003.

SLDCs to take action proactively by observing falling trend/pattern of voltages even

before receipt of SRLDC messages. SLDCs to also furnish the physical regulatory

measures to be taken up at low voltage nodes in their system. It was felt that physical

regulatory measures at 220 kV and below would give optimum results than physical

regulatory measures by SRLDC.

SRLDC real time messages/instructions to be adhered within 15 minutes of issuance

and the action taken report should be furnished within 30 minutes.

As a drive, faulty capacitor banks to be rectified immediately.

Chairperson, SRPC would be kindly requested to take up the issue with the concerned

since it was threat to system integrity.

Constituents were requested to revert back on utilization (operational/commercial

limitations & possibilities) of reactive support from wind/solar units even when they

are not generating.

States to furnish data of load management actions taken to overcome low voltage

conditions.

10.2 SRLDC had also presented the Study (SR snapshot of 0915 Hrs on 15th

April, 2016) to

ascertain requirement of capacitive compensation in low voltage areas of SR. In the study,

the capacitors were lumped at 220/230kV Station on 110/66 kV side and Capacitor

requirement had been arrived as below:


Additional 15 % more capacitor compensation needs to be added to compensate for

outages/maintenance of capacitor banks and considering the future growth.

All states were requested to install the capacitors as suggested before December 2016

i.e. before next high demand period for SR. Since time was limited, immediate action

was required to be taken.

10.3 Chairperson, SRPC vide letter dated 28.04.2016 (Annexure-VI) had taken up the issue with

States for necessary action.

10.4 A Special Meeting was conducted on 17th

June 2016 (MOM available at SRPC website)

with respect to pending KPTCL issues. The following recommendations were finalized in

that Meeting:

Retrofitting of Somanahalli and Hoody Capacitor Bank of 30 MVAR each to be

expedited. KPTCL to furnish the action plan within 2 weeks.

Faulty Capacitor Banks to be rectified in Bengaluru adjoining areas of KPTCL system.

KPTCL to furnish the details of faulty capacitor banks and action plan for rectification

within 2 weeks.

KPTCL /SLDC would call for a meeting with BESCOM with participation at

appropriate level within 2 weeks and following issues would be taken up:

Special drive on rectifying the faulty capacitors in BESCOM in a time bound

manner with the details of status of capacitor banks.

Tap optimization in the distribution transformers of BESCOM (to reduce drawal

of VAR)

Study of additional capacitor requirements. This needs to be taken up by

BESCOM on urgent basis.

Discom wise or location wise limitation on MW drawal due to low voltages and

high MVAR drawal.

Extending scope of maintaining power factor by other consumers (presently being

limited to HT Consumers).

BESCOM to identify feeders for Physical Regulatory Procedure based on MVAR

drawal by the respective feeders

Sub-Station

Capacitor –

Requirement

in

MVAR

Constituent wise

requirement

Nelamangala 160 Karnataka-505 MVAR

Hoody 185

Somanahalli 160

Mywadi 275 Tamil Nadu -

1025MVAR Arasur 330

Salem 210

Hosur 210

Palakkad 12 Kerala – 102 MVAR

Trichur 90


Senior Managements of KPTCL and BESCOM to be appraised that MW drawal

capacity had reached saturation and could be curtailed unless voltage profile is

improved and also if sub--transmission system is not strengthened on war footing

basis. Future increase in loads and even share from Yeramarus, Bellary, LTA etc.,

would be difficult to meet keeping in view the voltage profile.

SLDC could envisage taking up the issue with Hon’ble KERC to ensure that

BESCOM takes appropriate steps to improve voltage profile.

A Task Force could be set up on urgent basis to identifying the issues (Low voltages,

high MVAR drawal, strengthening of transmission & distribution system, drawal

capability of Bengaluru area , reactive requirement at DISCOMs etc) and to finalize

the action plan to resolve these issues in a time bound manner.

10.5 In the OCC/Special Meetings, the following was noted:

UVR had been implemented at Udumalpet (TN), Somanahalli (KAR) & Palakkad,

Trichur & Kochi (KER).

Udumalpet-Palakkad SPS had been implemented by KSEBL on 22.06.2016.

11. PATROLLING / MAINTENANCE OF CRITICAL LINES AND SUBSTATIONS

11.1 In recent times insulator tracking has been observed in Transmission lines and Substations

located in the coastal and polluted areas and SRPC vide letter dated 05th

May 2016

(Annexure-VII) had communicated to the concerned in this regard. Transmission Lines and

Substations in the most vulnerable terrain, coastal and polluted areas were to be categorized

for monitoring to ensure that Patrolling and Maintenance is being carried out as per

Patrolling guidelines. Format for furnishing details of schedule / Patrolling and Maintenance

carried out of the critical Transmission lines and Substations had been enclosed. MEPL,

SEPL, NTPC Simhadri, APTRANSCO & KSEBL had furnished the details.

11.2Concerned entities need to kindly take necessary steps to ensure that Patrolling and

Maintenance is carried out as per the Patrolling Guidelines.

12. CONTINGENCY OF 400 kV NELLORE - NELLORE PS LINES

12.1 The contingency of 400 kV Nellore- Nellore PS is under deliberation in various forums.

12.2 The following was noted in the 29th

SRPC Meeting :

NLDC had stated that they were envisaging a separate bid area for NPS connected

Generators. They would inform Hon’ble CERC regarding formation of separate bid

area. Power Exchanges would also be apprised accordingly.

TPCIL had suggested that alternate means like re-conductoring (HTLS) for this short

line could be considered. Any other measure which could help enhance evacuation

from this complex also needed to be explored.

CTU had pointed out that NPS-Nellore line included PGCIL and MEPL/SEL sections

and there could be issues in changing the conductor to HTLS for the entire line. There

could be equipment rating issues in the bay also. Since in the long term, the

interconnector was planned to be kept open, changing to HTLS did not appear to be an


economically viable solution. With bid area there could possibly be higher curtailment,

hence till other identified system came up, SPS (generation backing down) based

higher evacuation could be considered as an option.

SRPC had noted that already more than 2,000 MW of generation was available at NPS

and the first unit of NCC was also expected by May 2016. Any tripping of these lines

with generation loss would have adverse impact on the already loaded critical

inter/intra regional sections. STOA applications thus need to be judiciously processed

keeping in view the line flows.

TCC noted that NCC Unit I was scheduled to be commissioned by May 2016 and thus

process of formation of separate bid area needs to be completed at the earliest.

CTU stated that they would also examine other options like shifting of one or two lines

etc. for enabling higher evacuation from the complex.

12.3 In the OCC Meetings, SRLDC had informed that NLDC had called a Meeting with the

Power Exchanges in this regard. SRLDC had stated that they would carry out mock

computations to identify the export limits from the complex.

12.4 Subsequently SGPL (formerly NCC) vide letter dated 23.06.2016 (Annexure-VIII)

addressed to CEA had taken up the issue regarding evacuation from Nellore complex.

13. STATUS OF GENERATION IN GENERATING STATIONS

13.1 Issue regarding low generation in KKNPP, NLC TS-II Expansion, NTECL and NTPL was

deliberated in the 29th

SRPC / 28th

TCC meetings. The following had been noted:

NPCIL had informed that full generation of 1,000 MW was expected by the end of

March 2016.

NTECL had informed that second grab unloader had been commissioned on 17.02.2016

and conveyer related issues have been resolved. CEA team had also visited after the

commissioning of second grab unloader and they were satisfied that there were no

unloading constraints. Against requirement of 4.5 rakes/day, they were getting only 2.6

rakes per day till January 2016. From February, they were getting 3.5 rakes per day and

with this the PLF had also increased. Coal was also planned to be availed through the

Dhamra port and the Railways has given approval for 25 rakes/month through Dhamra

Port on 04th

March 2016.

NLC had informed that NLC TS II Expn units were first of its kind at this capacity.

Problems had been narrowed down but there were issues of falling of the refractory.

Experts had been called and specification of the refractory has been changed. Certain

modifications were being carried out and all the issues were expected to be resolved

within 3-4 months (by July 2016).

NTPL had informed that with assured domestic coal supply, blending issues would get

resolved. There were no coal issues and the PLF for the month of February was 81%

(Availability was around 86%). The generation would be increased to about 90 %.

They were getting 1 LT coal from MCL and balance was being imported.


TCC had observed that KKNPP and other units need to furnish realistic expected

generation level/revival dates enabling improved planning. KKNPP and NLC TS II

Expn were requested to improve their generation levels.

13.2 The level of generation of some ISG stations is kindly given below:

13.3 The following was noted in the OCC Meetings:

NTECL had informed that pipe conveyor issue had been resolved during June 2016.

Supply of coal through Dhamra port had started. NTECL had requested SRPC to take

up the issue regarding coal supply. MS, SRPC vide letter dated 18.05.2016

(Annexure-IX) had taken up the issue with MCL.

Modification works on NLC TS II Expansion Unit I had been carried out.

14. REVIEW OF ULDC / SCADA/COMMUNICATION

14.1 In the earlier Meetings, the following had been noted:

Review of SCADA and Communication availability was being carried out in the

OCC/Special meetings.

Hon’ble Commission has issued Order dated 29th

January 2016 in respect of Petition

No.7/SM/2014. The following direction merits attention please:

‘14. Under the Grid Code, it is the responsibility of all users, STUs and CTU to provide

systems to telemeter power system parameters in line with interface requirements and

other guideline made available by RLDC and associated communication system to

facilitate data flow up to appropriate data collection point on CTUs system. Telemetry

of on-line operational data is not only essential for effective monitoring of grid but also

forms key input for effective running of State estimation and other EMS tools at RLDC

and SLDCs, which are essential for reliable and secure operation of the grid. In view of

the critical importance of telemetry and associated communication system for ensuring

reliability in operation of the grid and optimum utilization of the transmission system,

there is an imperative need for all users to establish the telemetry and associated

communication system in time bound manner so that the power system operation may

be most reliable and optimum. Moreover, in view of the requirement of communication

system for a generating station and sub-station, the planning should be done in

Station Mar’ 16 Apr’16 May’16 June’16

KKNPP U1,

NPCIL

Generation

in MU

639.22 707.68 720.84 721.38

PLF 86% 98% 97% 100%

NTECL,

Vallur

Generation

in MU

500.02 742.78 707.9 554.98

PLF 45% 69% 63% 51%

NTPL,

Tuticorin

Generation

in MU

538.27 592.67 576.35 295.47

PLF 72% 82% 77% 41%

NLC TS II

Exp

Generation

in MU

31.62 106.59 77.40 128.81

PLF 9% 30% 21% 36%


advance by the generating company and transmission licensee to ensure that necessary

system are in place before commissioning of generating station or sub-station to take

care of the communication requirements even at the time of injection of power infirm by

a generating station and sub-station during testing.

……………………………..

17. We further direct all the utilities/generating companies which have to still establish

telemeter power system parameters as per details given in para11 above to provide

data to RLDCs/SLDCs as per the provisions of the Grid Code and CEA Grid Standards

Regulations by 31.7.2016. If the utilities/generating companies do not comply with our

directions, it will be construed as non-compliance of the order of the Commission and

appropriate proceedings under Section 142 of the Electricity Act, 2003 shall be

initiated against such utilities/generating companies. NLDC is directed to submit user-

wise latest status of telemetry, by 31.8.2016.

18. NLDC and respective RLDC are directed to up-date the status of telemetry every month

at their web-site and persistent non-availability of data from the generating

stations/sub-stations be taken up in RPC meetings for appropriate direction and

action.’

APTRANSCO had expressed concern over the differences between SCADA and SEM

values. There were huge operational and commercial implications and the issue had

been raised by AP continuously TSTRANSCO & TANGEDCO had also raised similar

apprehensions.

After deliberations, the following had been agreed in the TCC:

Monthly meetings would be held to resolve the issues. Representatives from SLDC

and SCADA of each state would attend the Meeting along with participation from

PGCIL, SRPC Ssecretariat. SRLDC would coordinate the Meetings.

Other issues on SCADA/ULDC features would also be discussed during the

Meetings. The concerned OEMs may also be called as per requirements. States

were suggested to give their agenda points.

State-wise reconciliation would be continued.

AP report would also be reviewed keeping in view ISTS touch points and manual

entries

The following was noted in the SRPC meeting:

CMD, APTRANSCO & Chairperson SRPC had expressed serious concern over the

long pending issue. It was noted that a crash action plan was highly essential.

ED, SR-II, PGCIL had assured that communication issues would be sorted out.

Communication failure issues need to be communicated to PGCIL at the earliest in

real time.

It was agreed that PGCIL & SRLDC would nominate a Co-ordinating Officer at

senior level. Periodic monitoring/review would also be carried out during next 2-3

months. Mr. V.K. Khare, GM, SR-II and Mr. P. Ranga Rao, AGM, SR-I were

identified as Co-ordinating Officers from PGCIL to address the associated issues.

14.2 SCADA/communication issues were deliberated in two Special Meetings held on

21.03.2016 & 17.05.2016 and also in OCC meetings. The following was noted in

OCC/Special meetings:


Steps needs to be taken on the taken on the actionable points finalized in the Special /

OCC meetings.

SCADA/Communication issues addressing procedure was firmed up which needs to

be followed by all the entities. Details of Nodal officers for contacting in State /

PGCIL were also noted.

Redundant channel availability from Bhadravathi, Talcher etc., was to be made

through by PGCIL. New RTU was to be made available at Talcher by NTPC.

PGCIL to ensure availability of communication link across back up (main) control

centers of SLDCs to back up control centers of SRLDC (at NRLDC, New Delhi).

Data validation with respect to TSTRANSCO was carried out on 17.03.2016.

In respect of AP the following had been noted :

Many of the interstate lines between AP and Telangana were having RTU only on

one side. Urgent action to be taken by AP and Telangana to provide RTUs on the

other side also which can act as standby.

Considerable time drift was observed in some of the SEMs. These SEMs (> 10 min

drift) are to be replaced immediately. It is understood that OEMs had consented to

replace/rectify these SEMs on immediate basis.

It was clarified that as per CEA Metering Regulations, respective transmission

licensees would provide/replace/rectify SEMs on respective ends.

A reconciliation Meeting was convened by SRLDC with APTRANSCO on 03.03.2016

and 19.7.2016.

Data validation for Puducherry, Karnataka, Kerala and TN was carried out on

20.04.2016, 28.04.2016, 28.04.2016 and 07.06.2016 respectively.

14.3 ICCP link between RTAMC & SRLDC

14.3.1 In the SCADA Meetings, PGCIL had suggested ICCP link connectivity between RTAMC

and SRLDC . SRLDC had stated that present system of data through dual communication

channels from the RTU shall be ensured. The proposal of providing data from RTMC to

SRLDC through ICCP link as a supplementary additional arrangement could be reviewed

at an appropriate level. PGCIL had pointed out that in some of the other regions, the link

was being established and thus the apprehensions of SRLDC were not understood.

14.3.2 It had been suggested that this issue be taken up in TCC/ SRPC forum.

15. TTC/ATC

15.1 In the 29th

SRPC Meeting the following was noted:

In the 4th

meeting of NPC held on 10th

December 2015 (MoM dated 1.1.2016), it had

been decided that to begin with, power system study for assessment of operational

limits / power transfer capability for each state would be done by the concerned RLDC

in association with concerned SLDC. Monthly TTC/ATC would be uploaded by

SLDCs in their respective websites and also communicated to concerned RLDC &

NLDC subsequently.


Some of the states had cited man power crunch to carry out the ATC/TTC

computations presently. SRPC had pointed out that this was a regulatory requirement.

Further as per decision taken in the NPC Meeting, States needed to carry out ATC/TTC

computations of their area. Besides this helped state utilities in gaining insight to likely

constraints and in taking proactive corrective measures.

APTRANSCO had stated that they would nominate officials for this exercise.

After deliberation, the following was agreed /noted in the TCC:

As per 4th

NPC Meeting, all states were required to compute monthly ATC/TTC

limits for their control area.

SRLDC/NLDC had agreed to render necessary assistance/conduct workshops

for the purpose.

For the base cases, constituents were suggested to kindly coordinate with

SRLDC. SRLDC had assured of full assistance in this regard.

In the SRPC meeting, It was agreed that capacity building/workshop on ATC/TTC

computation would be held as part of the exercise.

15.2 In the OCC Meetings, the following was noted:

Manpower issues were once again raised by AP, TS and KAR SLDCs.

Nominations for dedicated study groups from AP and TS were still pending.

ATC/TTC work shop for KPTCL, KSEBL & TANTRANSCO was held on 31st

March/1st April 2016, 12

th/13

th May 2016 and 6

th/7

th June 2016.

Works shop for APTRANSCO and TSTRANSCO was scheduled for July/August

2016

Converged PSSE base cases to be furnished to SRLDC.

15.3 In the 5th

NPC Meeting held on 08th

April, 2016, RPCs were requested to have regular

interaction with states for carrying out power system study in their network.

16. UPCOMING TRANSMISSION SYSTEM

16.1 Pending transmission elements in WR and SR for proper utilization of 765 kV

Raichur- Sholapur line (Out of planned 18 elements)

16.1.1Updated status of pending transmission elements in WR and SR for proper utilization of

765 kV Raichur - Sholapur lines (out of planned 18 elements) is furnished below please:

Sl.

No

Name of

Transmission

Element

Exe.

Agency

Sch. CoD Expected

date

Remarks

1 400 kV Gooty-

Tumkur D/C line

PGCIL June 2014 Commissio

ned on

01.12.2015

2 400/220 kV , 2 x 500

MVA, 63 MVAR

Reactor Tumkur S/S

PGCIL June 2014 Commissio

ned on

01.12.2015

Downstream network not

available

3 400 kV Tumkur-

Yelahanka D/C line

PGCIL June 2014 Severe RoW problem.

400 kV Yelahanka S/S is

ready.


16.1.2 The following had been noted in earlier Meetings:

Downstream system by KPTCL was needed to be expedited to reap the benefit. LILO

of 400 kV Nelamangala – Hoody along with 400 kV Tumkur – Yelahanka together

could help in further evacuation.

Constituents had expressed that LILO of 400 KV Nelamangala - Hoody at Yelahanka

and Tumkur - Yelahanka line (even without downstream at Yelahanka) could help

increase ATC and hence PGCIL may prioritize commissioning.

16.2 Upcoming inter-regional transmission schemes

16.2.1 The updated status is furnished below please:

Sl.

No.

Transmission Element Remarks

a) 765 kV Wardha – Nizamabad-Hyderabad

D/C line

Original Schedule by May 2018.

PGCIL trying to complete the Wardha

- Nizamabad system by May 2017

b) WR-SR 6000 MW HVDC Bipole Link

[Raigarh (Chhatisgarh) - Pugalur-Trichur

(TN/KER)]

Nov’ 2019

Raigarh HVDC terminal Award

Placed in Jun’16.(Pkg under court

case)

Award under progress for other

packages under Scheme-I

c) 765 kV Angul - Srikakulam PS D/C line By August 2016, other associated

Sl.

No

Name of

Transmission

Element

Exe.

Agency

Sch. CoD Expected

date

Remarks

Tumkur downstream

1 220 kV Tumkur –

Antharasana Halli

D/C

KPTCL Tenders for

the above

line had

been

placed on

18.03.15

and it

would take

18 months

for

completion

July 2016

2 220 kV Tumkur (400

kV) S/S – 220 kV

Tumkur S/S D/C

KPTCL

Yelahanka downstream

1 220 kV Yelahanka

(400/220 kV) S/S-

220 kV Yelahanka

S/S D/C Cable – 5

kM

KPTCL 6/7

months’

time (5

kM) once

the award

was in

place

Jan 2017 Special cable

(international source) was

required. Tendering was

under process.

2 400/220 kV

Yelahanka S/S – 220

kV BIAL S/S D/C

KPTCL


elements by Jun’2017-Dec’ 2019

d) Additional inter-Regional AC link for

import to Southern Region, i.e., Warora -

Warangal - Hyderabad- Kurnool 765 kV

link

TBCB, PFCCL- BPC–Some scope of

work/ reactive compensation modified

and RfQ modified accordingly.

RfP opened. Schedule was 40 months

from the transfer of SPV (around mid-

2019).

36th

Meeting of Empowered

Committee scheduled for 26.07.16

e) System strengthening within SR for

transmitting power beyond Vemagiri

TBCB- RECTPCL-BPC–Some

scope of work/ reactive compensation

modified.

The project has been awarded to

PGCIL under TBCB, and was

expected by April, 2019.

16.2.2 Updated status of upcoming inter regional scheme is furnished at Annexure-X.

16.2.3 The following had been noted in earlier Meetings:

CMD, APTRANSCO & APGENCO had pointed out that considerable generation was

coming in Vemagiri area. With Angul-Srikakulam also injecting into Vemagiri,

system strengthening in SR beyond Vemagiri needs to be fast tracked.

16.2.4 As noted in 29th

SPRC Meeting a Joint Study Meeting was held at SRPC, Bengaluru

between 14th

-17th

March 2016 to study Short Term Planning & Long Term Planning Issues

(MoM copy at Annexure-XI).

Short-term (temporary) connectivity between Vemagiri-II(PG) and KV Kota

(APTRANSCO) for increasing TTC of SR

The studies were carried out and it was found that after commissioning of the Wardha –

Hyderabad and Angul – Sirikakulam – Vemagiri 765 kV lines, the TTC for import of power

by Southern Region would increase from 6650 (at present) to 9600 MW. However, this

TTC reduces by 1700 MW upon commissioning of the scheme – “Removal of constrains in

400 kV by extension at 400 kV Vemagiri substation”, which had been planned for

accommodating the KV Kota - Vemagiri at Vemagiri(AP). In these studies, one unit (660

MW) of East Coast was also considered. To overcome the reduction in TTC for import of

power by Southern Region, system studies were carried out by considering a short-term

(temporary) connectivity between Vemagiri-II (PGCIL) and KV Kota (APTRANSCO) as

detailed above. It was observed that with this measure, the TTC would increase to 11000

MW. Considering the benefit of this temporary connectivity which would be needed till the

commissioning of ISTS system beyond Vemagiri, all the states requested APTRANSCO to

consider this proposal positively. APTRANSCO requested POWERGRID to send draft

proposal for consideration and approval of their boards. Draft proposal sent by

POWERGRID is enclosed at Appendix-5.0

Determination of TTC to import power into Southern Region

From the above study following is observed:

A. TTC is expected to increase to 7275 (6650 + 625 MW) with commissioning of 765

kV D/c Angul-Srikakulam-Vemagiri and LILO of Gajuwaka-Vijayawada at Vemagri-

II(PG). However, with commissioning of Kudgi generation, TTC is expected to

decrease which can be offset by increasing transfer limit on 765 kV D/C Raichur –


Solapur to 2750 MW.

B. After commissioning “Angul-Srikakulam-Vemagiri 765 kV D/c line along with

“Constraints in 400kV bay extensions at Vemagiri” the TTC value is getting reduced

to 5980 MW from present level of 6650 MW. However, after rearrangement as

proposed in 39th

Standing Committee meeting on Power System Planning in Southern

region held on 28th

& 29th

December, 2016, the TTC value is increased to about 7800

MW to 8100 MW depending on gas generation at Vemagiri(AP).

C. S1-S2 corridor capacity significantly improved with commissioning of 400kV

Tumkur(Vasanthanarasapura) – Dharmapuri D/C line

16.3 Status of various Associated Transmission Systems (ATS) of upcoming generators

16.3.1 Common System Associated with NTPL / Costal Energen Private Ltd / Ind-Barath

Power Ltd

Updated status of associated links is furnished below:

Transmission Elements Line

Length

(ckm)

Impleme

nting

Agency

Sch

COD

Ant

COD/

Act

COD

Constraints/

Remarks

765 kV D/C Tuticorin

PS - Salem PS line

(Dharmapuri) (initially

charged at 400 kV)

735 PGCIL Dec'14 Dec’16

400 kV D/C Salem PS –

Salem line

120 PGCIL Sep’16 Line is ready

765 kV S/C Salem PS

(Dharmapuri) -

Madhugiri P S line

(initially charged at 400

kV)

244 PGCIL Dec'14 Sep’16 Severe ROW

problems in

Karnataka. Critical.

765/400 kV Salem PS

(initially charged at 400

kV)

PGCIL Dec’16 Supply civil works

and erection under

progress.

400 kV D/C Coastal

Energen – Tuticorin PS

Coastal

Energen

Jul’16 CEA in its meeting

held on 11.12.2015

has advised Coastal

Energen to

complete the line

by April 16, 2016.

16.3.2 Transmission system associated with IPPs (IL&FS) of Nagapattinam/Cuddalore Area

Updated status of associated links is furnished below please:

(i) Transmission system associated with IPPs of Nagapattinam/Cuddalore Area–

Package A

Transmission

elements

Line

Length

(ckm)

Imp. Agency Sch

COD

Ant.

COD

Constraints/

Remarks


Nagapattinam PS-

Salem New 765

kV D/C line

406 Powergrid

Nagapattina

m-

Madhugiri

Transmission

Company

Limited

(PNMTCL)

(A subsidiary

of PGCIL)

Mar’

15

July 16

Salem New –

Madhugiri 765 kV

S/c line.

219 Jul’16 Severe RoW issues

being faced.

(ii)Transmission System Associated with Contingency plan for Evacuation of Power

from IL&FS (2x600MW)

16.3.2.1 The following was noted in the 29th

SRPC meeting:

It was noted that some stringing/ upgradation was pending within NLC Complex. These

works had been envisaged as a contingency evacuation for IL&FS.

It was noted that strengthening of Neyveli TS-II-Neyveli TS-I with HTLS conductor

was part of contingency plan for evacuation of IL & FS power as per CERC Order. The

transmission capability remains unchanged in view of the replacement not carried out

in NLC complex. To allow higher power, balance works were also to be completed to

comply with the intent of CERC Order.

16.3.2.2 It was noted in the sub Committee Meetings, PGCIL had informed that BOQ had been

put to Management for approval.

16.3.3 Evacuation of Power from HNPCL (1,040 MW) Power Plant

(i) Updated status of associated links under APTRANSCO’s scope is furnished below:

Transmission

Elements

Line

Length

(ckm)/M

VA cap.

Implementin

g Agency

Target

Date

Target

date

completi

on

Constraints/ Remarks

Startup Power Line

from M/s. HNPCL

TPP to 400/220 kV

Kalpakka SS

7 APTRANSCO Line Charged on

07.02.2014

400 kV TM D/C

Line from HNPCL -

Kamavarapukota S/S

(Lot-I, II & III)

200 APTRANSCO Jul ‘15 Dec’16

400 kV TM D/C

Line from

Kamavarapukota S/S

- Vemagiri 400 kV

S/S

APTRANSCO Apr’17 Purchase Order issued

on 03.11.2015. 24

Foundations completed

out of 256.

400 kV TM D/C

Line from

Kamavarapukota S/S

- 400 kV Chinna

Korukondi S/S

212 APTRANSCO Sept. ‘15 Jul’16

All the foundations,

tower erections and

stringing works are

completed.


Kamavarapukota

Substation

2x315

APTRANSCO Mar ‘16 Sep’ 16

Works under progress.

2 Nos. of 400 KV

Bay Extensions at

existing 400/220 KV

Kalpaka S/S of

HNPCL

APTRANSCO Nov 16 All works completed

for 1 No. of 400 KV

Bay on 07.02.2014

(ii) Updated status of associated links under TSTRANSCO’s scope is furnished below:

Transmission Elements Line

Length

(ckm)/M

VA cap.

Implement

ing

Agency

Target

Date

Target

date

completio

n

Constraints/

Remarks

400 kV TM D/C Line

from Chinna Korukondi -

400 kV Suryapet S/S

212 TSTRANS

CO

Works completed.

Suryapet S/S -

Nandiwanaparthi S/S 400

kV Quad D/C Line

240 TSTRANS

CO

Mar’15 By Sep 16 Works awarded in

Sep-13. Stringing

completed. OPGW

4.682 kM under

progress.

400 kV Quad D/C Line

from Nandiwanaparthi

S/S - Shankarapally S/S

222 TSTRANS

CO

Mar’15 By Sep 16 Tower erection: 300

out of 315 completed.

Stringing: 60.77 km

out of 111 km

completed/

Suryapet Substation

400/230/132 & 2 Nos. of

400 KV Bay Extensions

at 400 KV Shankarapalli

S/S

2x315

TSTRANS

CO

All works completed.

Suryapet SS charged

on 30.03.2016

through LILO of 400

kV VTS-Malkaram

Ckt 1

16.3.3.1 The following had been noted in SRPC/TCC Meetings:

APTRANSCO had informed that the system was getting delayed due to continuous

crops and ROW accessibility was difficult. Under guidance of CEA, the progress had

been reviewed by an independent consultant and the system was expected by

November 2016.

TSTRANSCO had informed that their portion of the evacuation scheme would be

ready within 4 – 6 months.

Joint studies for the Vemagiri complex were noted.


16.3.4 Transmission system of KPTCL for evacuation of power from Yermarus TPS (2x800

MW)

Updated status of associated links is furnished below:

Transmission elements Imp.

Agency

Line

Length

(ckm)/

MVA

cap.

Sch. COD Constraints/ Remarks

Bellary 400 kV PS near

‘BTPS’

JSWEL

(KPTCL)

Jul’16(As

informed by

JSWEL)

Works under progress

Gulbarga 400/220 kV

substation

KPTCL 2x500 Land acquired. Geo tech

survey work will be awarded

within a week. Bill of

Materials prepared and

within 15 days estimate will

be prepared.

Yermarus TPS - Gulbarga

400 kV D/C line (QM)

KPTCL Detailed survey completed.

Estimate is being prepared.

400 kV SS at

Chikkanayakanahalli (C.N

Halli) near “Loop in Loop

Out” (LILO) point on the

Nelamangala – Talaguppa

400 kV lines to Hassan.

KPTCL 2x500

MVA

In 39th

SCPSPSR a step

down SS with 2

x 500 MVA,

400/220 kV

ICTs was

agreed.

Land Acquisition is under

progress. The proposal is

submitted from AC Tiptur to

DC Tumkur on 28.03.2016

LILO of both the circuits of


400 kV lines to the proposed

pooling station near CN

Halli.

KPTCL Linked with CN Hally

station

Termination of 400 kV D/C

line feeding 400/220 KV

station at Hassan from


line at CN Halli 400 kV

pooling station.

KPTCL After CN Halli land

identification, survey would

be taken up.

Yermarus TPS - Bellary

Pooling Station 400 kV D/C

line with quad moose

conductor

KPTCL 300

(400 kV

MC Line

(5.138

Kms) and

400 kV

DC line

(137.355

Km)

totally

for a

route

length of

142.493

Kms)

Aug 2017 (2

years from the

award)

DPR approved

on 26.02.2015.

Tendered on

09.03.2015.

Techno

Commercial

bids opened on

21.05.2015.

Price bids

opened on

01.07.2015. The

works have been

Meeting Update:

Total Locations : 399 Nos

Excavated : 209/399

Stubs concreted : 193/399

Towers erected: 14/399

Stringing : Nil


awarded in

October 2015.

Bellary Pooling Station -

C.N.Hally 400 kV D/C line

with quad moose conductor

KPTCL 360 Survey using

MST conducted

and reports

submitted to

zonal office vide

ltr no:1682-83

Dt:30.06.15 and

the same is

submitted for

approval to

CEE(P&C) vide

ltr.no.2504-06 dt

7.7.2015

To be tendered

Bellary PS to Madhugiri line

(765/400kV V.N.pura

substation (PGCIL)

a) Madhugiri to Rampura

limits): 400kV DC line

with Quad Moose ACSR

(188.74 Kms)

b) Bellary pooling Stn 400

kV to Rampura limits

(KelaginaKanavi): (43.018

Kms)

KPTCL

Under

Executio

n by

KECIL

By

Kalpataru

PTL

380

22-Dec-16

29th SRPC

March 2017

24-Apr-17

29th SRPC

March 2017

Out of 512 locations, 470

excavations over, 463 stubs

concreted, 445 towers

erected &125.9/188.74 km

stringing completed

Out of 125 locations, 105

excavations over, 96 stubs

concreted& 58 towers

erected

Bellary TPS – Bellary

Pooling Station 400 kV D/C

line with quad moose

conductor

KPTCL 10 In 39th

SCPSPSR it was

agreed to drop the proposal.

Dropped

De-link 400 kV S/C line

running between RTPS-

BTPS-JSW-Guttur with

JSW Bus

KPTCL

Agreed in 39th SCPSPSR

400 kV M/C line from JSW

to BPS is under progress,

once this is commissioned

the link between JSW &

BPS will be delinked.

JSW TPS – Bellary Pooling

Station 400 kV D/C line

with quad moose conductor

KPTCL Jul’16(As

informed by

JSWEL)

Only after all other

Transmission Elements

under Stage I are

commissioned. KPTCL/JSW

to discuss to take up this

work as dedicated

transmission line by the

generator.

Works to be carried by

JSW.


16.3.4.1 The following had been noted in earlier Meetings:

KPTCL had informed that 400 kV Tumkur-Bellary PS D/C line had been awarded

and was expected to come along with Bellary PS with schedule of one and half years

i.e March 2017. They were trying to compress construction to one year against

schedule of one and half year. Land identification was completed in C N Hally but

KPTCL was targeting this system in the second stage.CEA had been requested to

allow 500 MW of evacuation from Yermarus coupled with drawal at Tumkur. It was

assured that 500 MW of injection from Yermarus would not be at the cost of regional

ATC.

SRLDC had pointed out that 400 KV Hiriyur - Nelamangala lines were getting

overloaded and ATS was not ready for Bellary Unit-III and Yermarus TPS.

Generation from the Complex maybe required to be regulated by Karnataka SLDC.

SRLDC had stated that only 2,090 MW of evacuation would be possible from Raichur

TPS, Yermarus TPS & Bellary TPS. KPTCL pointed out that with the present

network about 2,600 MW of power was already getting evacuated. SRLDC

confirmed that 400 kV N/W had only been considered in the studies.

16.3.4.2 In the Joint Study Meeting was held at SRPC; Bengaluru between 14th

-17th March 2016 to

study Short Term Planning & Long Term Planning Issues (Refer Annexure-XI) the

following was concluded:

So, based on studies, it was decided that Karnataka may commission first unit of

Yeramarus TPS either by reducing about 700 MW at Raichur TPS or by drawing about

500 MW at Madhugiri. Considering that a March/early April is low wind season,

Karnataka should attempt to achieve COD within March/ early April. This discussion is

exclusively for the purpose of COD. Regarding scheduling of YTPS power,

KPTCL/Karnataka would coordinate with SRLDC. The LTA and MTOA in ISTS would

have priority, and the margins if any after meeting these LTA/MTOA commitments may

be considered by SRLDC.

16.3.5 Transmission System required for evacuation of power from Kudgi TPS (3x800 MW

in Phase-I) of NTPC Limited

The updated status is furnished below:

Additional JSW TPS –

Bellary Pooling Station 400

kV D/C line with quad

moose conductor


400 kV BTPS-Guttur D/C

line (QM)


Transmission

Elements

Imp. Agency Scheduled

CoD

Revised

Target

Date



16.3.5.1 The following had been noted in earlier Meetings:

Three 220 kV D/C lines were planned evacuation lines at 220 kV level to Vajramatti,

Basavana Bagewadi and Bijapur. The Vajramatti line had just been awarded and

could take about 1 year. There were some RoW issues in that area. Construction from

B Bagewadi and Bijapur ends had already commenced and about 50 % of the lines

are completed

16.3.6 Transmission System for evacuation of power from Singareni Collieries

Generating Project (2 x 600 MW)

The following is the status update:

400 kV Kudgi TPS

– Kudgi (PG) 2xD/C

Line

M/s Kudgi

Transmission

Limited (L&T

Infrastructure

Development

Projects Ltd.)

Feb-15 2015-16

One D/C line Kudgi TPS –Kudgi

(PG) declared on deemed CoD

from 04.08.15.

Kudgi (PG)-Tumkur

765 kV D/C Line

Dec - 15 Jul’16/A

ug’16

Under Progress

Tumkur - Bidadi

400 kV D/C (quad)

Line

Line is ready

400/220 kV ICT 2 at

NTPC Kudgi

Switchyard

NTPC Aug’16

400 kV Bus Reactor

-2

NTPC Jul’ 16 Under Progress

Transmission

elements

Length

(ckm/MVA

capacity)

Imp. Agency

Sched

uled

CoD

Target

date of

Completi

on

Constraints/

Remarks

1. 400 kV Singareni- Gajwel in two parts

a) 400 kV Jaipur

(Singareni) -

Rangampet D/C

(Quad)

149.636

TSTRANSCO

Comp

leted

Charged on

Nov 15

Reactor also

commissioned

b) 400 kV

Rangampet- Gajwel

D/C (Quad)

174.852

TSTRANSCO

Comp

leted

2. 400 kV Singareni-Nirmal in two parts

a) STPP, Jaipur -

Jagityal

142 TSTRANSCO Nov 16 Works Awarded on

Nov’15.

Foundations: 110

out of 201 Nos

completed. Tower

erection: 61 out of

210 completed.

Stringing work

commenced.


16.3.7 Transmission System for Rayalaseema TPS (600 MW)


16.4 Status of upcoming links having impact on S1-S2

Following is the updated status:

Sl. Transmission Schedule Expected Remarks

b) Jagityal - Nirmal 156 TSTRANSCO Feb

17

Nov 16 Works Awarded on

Oct’15.

Foundations: 194

out of 2012

completed.

Tower erections:

182 out of 202

completed.

Stringing: 44.482

out of 74.088 kms

completed.

Transmission

elements

Length

(ckm/M

VA

capacit

y)

Imp.

Agency

Schedule

d CoD

Target

date of

Completio

n


RTPP (Stage - IV) -

Chittoor TM D/C

Line

(a). RTPP - Pedda

Jamgam Palli

(P.J.Palli)

(b). P.J. Palli-

Chittoor

(c) 220 kV

Muddanur(RTPP)-

Chinakampally 3 &

4

432

120

APTRA

NSCO

Dec’ 16

Dec’ 16

Foundations: 291 out of 321

completed.

Tower erection: 250

completed.

Stringing of 49.049 kM

completed.

Foundations: 309 out of 321

completed.

Tower erection: 220

completed. Stringing of

38.868 kM completed.

Commissioned on

16.06.2016

400/220 kV,

Kalikiri S/S

2x315

MVA

APTRA

NSCO

Feb’17 PO is placed in Nov-15.

LILO of both

circuits of

Rayalseema IV-

Chittoor 400 kV D/C

line| at Kalikiri

APTRA

NSCO


No. Element Commissioni

ng Date

1 400 kV

Somanahalli-

Dharmapuri PS

Jun’15 Sep’16 Severe RoW problems being faced in

Karnataka. Critical issues related

compensation not yet resolved.

2

400 kV

Mangalore

(UPCL ) -

Kasargode-

Kozhikode

In the 39th SCPSPSR, it was noted that the

process of implementation of 400 kV

UPCL-Kasargode- Kozhikode line in TBCB

or regulated tariff in compressed time

schedule will be initiated as applicable.

16.4.1 In earlier Meetings the following had been noted:

PGCIL had informed that regarding 400 kV Dharmapuri - Somanahalli line, DC

(Urban) had ordered compensation of 100 % of fair value for tower footing and 55 %

for line corridor. With this, cost of 30 kM line was working out to as high as Rs 90

crore. SR-II, PGCIL had informed that ROW issues for 400 kV Somanahalli -

Dharmapuri PS were yet to be resolved and it would take around two months to

complete the work once the ROW issues are resolved.

16.5 Critical Intra-regional transmission elements


Sl.

No. Transmission Element Expected CoD Remarks

1 765 kV Salem- Tumkur

By PGCIL

Through TBCB

Sep’16

Jul’16

Severe RoW being faced in

Karnataka. Critical

2 400 kV Edamon-Kochi Jun’17 Govt. of Kerala issued revised

G.O in Jan’2015 with

enhanced compensation.

Being monitored under

PRAGATI

16.5.1 The following was noted in earlier Meetings:

SR-II, PGCIL had informed that regarding 400 kV Edamon - Kochi there was not

much progress. KSEBL had informed that the survey was being carried out from both

the ends and the ROW issues would be settled by Kerala Govt. The line was being

monitored under ‘PRAGATI’ (Pro Active Governance And Timely Implementation).

Regarding 765 kV Tumkur - Dharmapuri, PGCIL had informed that the line was

crossing four districts in Karnataka (Tumkur, Kolar, Chikkaballapur & Bengaluru

Rural) and RoW issues were being addressed in a stepwise manner.

16.6 400 kV Trichur-Kozhikode line (Madakkathara-Areakode)

In the 39th

SCPSPSR it was noted that Madakkathara - Areakode (Kozhikode) -

Kasaragode 400 kV D/C link may be taken up by KSEBL.


16.7 Requirement of additional ICT at 400 kV sub-station at Kozhikode

16.7.1 In the 39th

SCPSPSR, 1 x 500 MVA ICT at Areakode (Kozhikode) substation was

agreed.

16.7.2 KSEBL vide letter dated 20.02.2016 had stated that PGCIL may take necessary steps to

provide additional ICT at 400 kV substation at Kozhikode temporarily by using spare 315

MVA ICT till 500 MVA ICT is available. The following was deliberated in the SRPC /

TCC meetings:

TANTRANSCO had informed that they would return back the spare ICT of PGCIL

being utilized at Sriperumbudur as their ICT was ready for commissioning.

PGCIL had stated that they would consider shifting either of the two ICTs and most

likely the ICT from Tamil Nadu would be feasible. They would initiate the bay

works also.

16.8 NLDC vide letter dated 21st April 2016 (available in NLDC website) had highlighted the

following transmission constraints in their Operational Feedback for the quarter January-

March 2016 in respect of SR:

I. Transmission Line constraints:

1. 400 kV Nellore Pooling Station -Nellore D/C line

2. 400 kV Gooty-Nelamangala line & 400kV Gooty- Somanahalli line

3. 400 kV Udumalpet- Palakkad D/C line

4. 400 kV Mettur - Arasur D/C

5. 400 kV Hiriyur-Nelamangala D/C line

6. 400 kV Jindal - BTPS S/C Line

7. 400 kV Kolar- Hosur D/C line

8. 220 kV Bangalore Metro Network

9. Overloading of 220 kV Shoolagiri-Hosur(TN)-Yerrandahalli-Somanahalli S/C line

10. 220 kV Sharavathy-Shimoga lines (4 nos) and 220 kV Sharavathy-Talaguppa D/C

11. Constraints in Coastal AP

12. Constraints for Rayalaseema TPS Generation Evacuation

13. Transformation Capacity at 400/220 kV Kozhikode SS

14. Constraints in Chennai 230 kV System

15. Overloaded 220 kV Lines in Tamil Nadu

16. Constraints in 230 kV Evacuation lines of MTPS and Kundah complex

17. Constraint in Evacuation of Coastal Energen

II. ICT Constraints

1. 400/220 kV 2 x 315 MVA ICTs at Gazuwaka

2. 400/220 kV 2 x 315 MVA ICTs at Vemagiri

3. 400/220 kV 2 x 500 MVA ICTs at Nelamangala

4. 400/220 kV 2 x 500 MVA ICTs at Somanahalli

5. 400/220 kV 2 x 500 MVA ICTs at Hoody

6. 400/220 kV 2 x 315 MVA ICTs at Mysore


7. 400/230 kV 2 x 315 MVA ICTs at Arasur

8. 400/230 kV 2 x 315 MVA ICTs at Udumalpet

9. 400/230 kV 2 x 315 MVA ICTs at Pugalur

10. 400/230 kV 2 x 315 MVA ICTs at Trichy

Respective entities are kindly requested to identify and implement short term and long

term measures to overcome these constraints.

17. UPCOMING RENEWABLE PROJECTS AND THEIR INTEGRATION WITH

TRANSMISSION NETWORK

17.1 Status update of the upcoming schemes in Southern Region for renewable as given below

is given at Annexure-XII.

Uravakonda Wind – AP

Solar Power Park at Ghani/Panyam (1000 MW )Phase-I Works – AP

1000 MW Wind Power at Aspiri- AP

1500 MW NP Kunta Solar Project- AP

TN – 1000 MW Solar Park to be developed by M/S Adani at Kamuthi

Kamuthi Solar (Max 100 MW injection)- TN

Samugarengapuram Wind (1800 MW existing + 300 MW) - TN

Green Energy Corridors:- Inter State Transmission Scheme (ISTS) - Part - A

LTA to Wind Generators in Tirunelveli Area - Tamil Nadu

Connectivity to Wind Generators in Coimbatore Area -Tamil Nadu

Connectivity to Wind Generators in Anantpur Area – AP

Renewables (KfW) Hindupur - AP

Renewables (KfW) Jammalamadugu - AP

Renewables (KfW) Uravakonda - AP

Renewables (KfW) 220 kV Interconnectivities - AP

Renewables (KfW) 132 kV Interconnectivities – AP

Renewables (KfW) Intra-state (modified scheme)- Karnataka

Renewables (KfW) Phase I – Tamil Nadu

Renewables (KfW) Phase II – Tamil Nadu

Tumkur Ultra Mega Solar Park (2000 MW) – Karnataka

17.2 In its 28th

meeting, TCC had observed that the timely progress on the above scheme needs

to be communicated to SRPC Secretariat since it was a critical issue being monitored by

various bodies.

18. NEW PROJECTS OF NTPC, NLC, NPCIL, JOINT VENTURE & UMPP

18.1 Krishnapatnam UMPP (6x660 MW)

18.1.1 The following had been noted in Meetings of TCC/SRPC:

The matter is sub-judice in High Court of Delhi.

CMD, APTRANSCO & APGENCO had informed that APSPDCL was the lead

procurer. Over a period of time this project was non-starter and it was unlikely to

start in future also. Except land leveling no work had been undertaken. Last week,


CAPL made presentation to the procurers for exit from the project. Hon’ble High

Court had posted the case on 22nd

April 2016 and project was being constantly

monitored. Even in the last procurer’s meeting, CAPL was suggested to come out

with a reasonable proposal.

Progress of Krishnapatnam UMPP had been uploaded in MoP website with the

observation ‘The project was handed over to Reliance Power Ltd. on 29.01.2008.

The developer has stopped work at site, citing new regulation of old pricing in

Indonesia. Lead Procurer namely Andhra Pradesh South Power Distribution

Company (APSPDCL) has issued termination notice to Coastal Andhra Power Ltd

(CAPL). The case is subjudice in division bench, Delhi High Court.’

18.2 Cheyyur UMPP (4,000MW)

18.2.1 In the 27th

TCC Meeting, CTU had informed that this project had been identified under

‘Plug and Play Mode’ and new bids would be invited during 2015-16.

18.2.2 The following was noted in the TCC meeting:

The progress of Cheyyur UMPP has been uploaded in MoP website with the

observation ‘The site at Cheyyur in Kanchipuram District in Tamil Nadu has been

identified along with captive port at Panaiyur village. Request for Qualification (RfQ)

and Request for Proposal (RfP) issued in 2013 were withdrawn. Fresh RfQ and RfP

are to be issued after the finalization of Standard Bidding Documents.’

18.3 Schedule of synchronizing/commissioning of the new projects of NTPC, NLC, NPCIL,

BHAVINI & UMPP is furnished below:

Station Unit

InstalledC

apacity

MW

Scheduled date of

synchronizing /

commissioning

Remarks

NTPC

Kudgi TPS Stage-

I

I,I,

III

3 x 800=

2400 Unit-I Synchronization by

Jul’16. CoD by

Mar’17.

Unit-II

Synchronization by

Mar’17. CoD by

Sep’17

Unit–III Synchronization by

Jun’17.CoD by

Dec’17

Telangana STPP

Phase I

2 x 800 U-I CoD May 2020

U-2 CoD Nov 2020

Pudimadaka AP 4 x 1000 52 Months from

Zero Date

85% share to AP.

Zero date yet to be finalized.

AP requested NTPC to firm up the

zero date at the earliest.

AP informed evacuation system

would be developed by PGCIL

NLC


New Thermal

Power Project

I 500 October 2017 NLC expressed concern that the

evacuation system needs to be in

place. CEA had given its

recommendation vide letter dated

10.02.2016.

CTU informed that the LILO to

Araliyur could only be taken up

after getting authorization from

MoP.

Araliyur S/S was being developed

by TANTRASCO and was

expected by June 2018

II 500 April 2018

Sirkali TPP I, II,

III

3 x 660 From GoI approval

Unit I – 52 months

Unit II – 58 months

Unit-III – 64 months

PPA has been signed. Fuel

imported coal. Approval of

Feasibility Report was awaited

from NLC Board.

NPCIL

Kudankulam St-I II 1000 Unit-II:

Synchronization by

July 2016

COD by Nov 2016

KKNPP informed that they would

approach Hon’ble CERC for

extension of availing start up

power. Extension available upto

31.07.2016.

BHAVINI

Kalpakkam

(PFBR)

I 500 Synchronization by

March 2017

COD by Sep 2017

UMPP

Krishnapatnam 3960

(6 x 660)

APEPDCL and PCKL had taken

steps with their legal counsel to

expedite the hearing before

Honorable High Court of Delhi

Cheyyur 4000 New bids would be called

19. NEW PROJECTS OF STATE SECTOR & IPP

19.1 Updated status of new projects of State sector is furnished below:

Sl

No

Name of project Located

in

Capacity in

MW

Commissioning Schedule

/Remarks

1 Rayalaseema TPS ST-IV AP 1 x 600 CoD by Dec’ 2016

2 Dr. NTTPS, Vijayawada AP 1 x 800

3 Polaki AP 4000

4 Bellary TPS U-3 KAR 1 x 700 Achieved full load on 01.03.2016.

COD by July 2016

5 Yermarus TPS KAR 2 x 800 Unit-I: FL achieved on 29.03.2016.

Unit II: COD by July 2016.

6 Kakatiya TPP St.-II Telangana 1 x 600 COD from 24.03.2016.

Confirmation yet to be received

from Commercial Wing

7 Singareni Telangana 2 x 600 Unit I: CoD by June 2016

Unit II: CoD by Aug 2016

8 Manuguru PPP Telangana 4 x 270

9 Kothagudem TPS Phase Telangana 1 x 800


VII

10 Damaracherla Telangana 2 x 600 +

4 x 800

19.2 Updated status of new projects of IPPs is furnished below:

Sl

No.

Name of project Located

in

Capacit

y in

MW

Commissioning Schedule /Remarks

1 Meenakshi PH-II AP 1 x 700 2016-17

Untied: 640 MW

2 East Coast Energy

Thermal

AP 2 x 660

2016-17

AP : 300 MW

3 Thermal Powertech

(TPCIL) Unit-III

AP 1 x 660

CoD : 2016-17

4 SGPL (NCC)

Krishnapatnam

AP 2 x 660

Unit I : CoD by 2016-17

Unit II: Syn. by September 2016

AP: 500 MW (firmed up PPA to be

signed).

5 Hinduja NPCL,Vizag AP 2 x 520 COD of Unit 1: 11.01.2016.

Unit II : 1st Synchronized on

31.03.2016

6 Coastal Energen Unit-II TN 1 x 600 COD on 15.1.2016

7 IL&FS

(ITPCL) Unit-II

TN 1 x 600 First synchronized to grid on

30.04.2016. COD from 30.04.2016

20. EMERGENCY RESTORATION SYSTEM (ERS)

20.1 The requirement of ERS was outlined in MoP letter dated 05.12.2014. CEA vide letter

dt.18.04.2016 (Annexure-XIII) had sought updated status on the ERS which was

communicated to the States. Status update is given below please:

Transmission

Utility

Requirement

as per MoP

Existing Status/Remarks

APTRANSCO 3 Nos. ERS I – Placed at Nellore.

ERS II – received on 25.04.2016 and

would be kept at Vizaz.

ERS III- tendering process had been

initiated.

TSTRANSCO 1 No. TSTRANSCO vide letter dt.31.5.2016 had

informed that they were in the process of

calling Tenders and it would take around

one year.

KPTCL 2 No. 2 Nos.

KSEBL 1 No. Appeared not to be feasible as per the

assessment. KSEBL had agreed to

reconsider.

TANTRANSCO 2 Nos Proposal had been sent for approval

PED Nil


PGCIL 4 Nos. ( 2 Nos.

additional)

2 Nos (SR I

& SR II was

having 1

No. each)

Order had been placed. Would be kept at

Vizag and Chennai. Expected by June

2016.

TSTRANSCO suggested that one ERS

could be kept at Hyderabad.

765 kV ERS (one each for SR-I and SR-II)

under process.

21. PROGRESS OF BUS/LINE REACTORS TO BE COMMISSIONED IN SR

21.1 Status of implementation of Bus / Line Reactors / Dynamic Compensation approved in the

Standing Committee / SRPC pending for commissioning by the SR constituents is

furnished below please:

Entity Bus Name Status REMARKS

KPTCL

Hoody Received at site by July

2016 As identified in the 22

nd Standing

Committee Meeting on Power

System Planning of SR and as

approved in the 4th

SRPC Meeting

held on 7thJune 2007

Nelamangala By December 2016

Entity Bus Name Capacity in

MVAR

Approved

in Type Remarks

PGCIL

Vijayawada 2x125 20

th SRPC/

34th SC

Bus

Would be

Commissioned

progressively from

Sep 2016.

Vijaywada reactor

expected by July

2016.

Nagarjuna Sagar 125 21

st SRPC/

34th

SC Bus

Narendra 125 21

st SRPC/

34th SC

Bus

Hyderabad 125 21st SRPC

Gooty 125 22

nd SRPC /

36th SC

Bus

Hassan 125

36th SC

Bus

Khammam 125 Bus

Kudgi PG 125 Bus

Trivandrum 125 Bus

Nellore (Existing) 125 Bus

Yelahanka 2x63 Bus

Nellore PS on NPS-

Gooty Line

2 x 63 (37th

SC) Line

Kudgi PG–Tumkur

D/C at each end 4 x 63 Line

Cuddapah 50 to 125 39th

SC

Thiruvalam 765 kV 2 x 240 39th

SC

APTRANS

CO

Vemagiri 80 21

st SRPC/

34th

SC Bus

Commissioned in

May 2015

Vemagiri 125

Bus PO has been

placed in the Kurnool 125 Bus


21.2 Subsequently, Chairperson, SRPC vide letter dated 19.05.2016 (Annexure - XIV) had

taken up the issue regarding expediting installation of reactors.

21.3 Dynamic Compensation (Approved in 36th

SC)

Entity Bus Name

SC

MVA

GVA /

KA

Dynamic

Compensation

(STATCOM)

Mechanically

Switched

Compensation

(MVAR) Remarks

Reactor Capacitor

Kalpakka 125

36th

SC

Bus

month of June

2016 with a

delivery schedule

of 18 months.

Chittoor 125 39th

SC

Vijayawada 125 39th

SC

APTRANS

CO/

APGENCO

VTPS Stage IV 125 39th

SC

KPTCL Davangere 125 39

th SC

Talguppa 125 39th

SC

TANTRAN

SCO

Almathy 125 39th

SC

Kaythar 125 39th

SC

TANTRAN

SCO/

TANGEDC

O

Mettur 125 39th

SC

TSTRANSC

O

Mamidipalli 125

36th

SC

Bus

LOI was ready and

awaiting PSDF

funding.

Gajwel 125 Bus

Sankarapalli 125 Bus

Mehboob Nagar 125 Bus

Malkaram 125 Bus

TSTRANSC

O/

TSGENCO

Srisailam LB 125

39th

SC

NPCIL Kaiga 2 x 125

Bus

Technical

specification being

firmed up for one

reactor. In the

special meeting

held on 19.5.2016,

KGS was

suggested to

initiate action for

both the reactors.

UPCL Udupi 2 x 125 39

th SC

Awaiting CERC

clearance for

capitalization.


PGCIL

Hyderabad 18.4/

26.5

+ 200 MVAR 2x125 1x125

Under

Tendering

Udumalpet 19.4/

28.0

+ 200 MVAR 2x125 1x125

Trichy 12.5/

18.0

+ 200 MVAR 2x125 1x125

21.4 PSDF– Installation of STATCOM by Powergrid in Northern and Southern Region

21.4.1 MS, Appraisal Committee and ED, NLDC vide letter dated 23.06.2016 (Annexure -XV)

had referred to funding of the schemes of POWERGRID under PSDF for installation of

STATCOM in Northern and Southern Region submitted by POWERGRID at an

estimated cost of Rs 367.7 crore and Rs 472.55 crore respectively. The schemes were

deliberated by the Appraisal Committee headed by Chairperson, CEA in the Meeting

held on 31.05.2016. The Committee was of the view that approval of the concerned

RPC may be taken for further evaluation.

21.4.2 The issue is scheduled to be deliberated in the Special TCC Meeting to be held on

02.08.2016.

21.5 Reactive Power Planning

21.5.1 In the 5th

NPC meeting held on 08.04.2016 (MoM dated 29.04.2016), the following had

been noted:

In 4th

meeting of NPC, it was agreed that states should adopt a proactive approach in

the matter of reactive power planning, and that the provisions regarding reactive

power planning similar to those mandated in the IEGC for the CTU should be

included in the respective State Grid codes.

After detailed deliberation, it was agreed that the proposal of capacitor installation

planning by stars/entities would be referred to RPCs by PSDF Sub-Committee or

routed through RPCs by States/entities and the proposal would be vetted by the

respective RPC.

21.5.2 The status of Capacitor installation in Transco/Discoms is given below:

Utility Reactive Power Planning Voltage

level

Remarks

APTRANSCO 32 x 7.2

4 x 14.4

On 33 kV

side

4 x 7.2 MVAR Capacitors installed

APEPDCL Srikakulam : 5 x 2 MVAR

Vizianagaram : 2 x 2 MVAR

Visakhapatnam: 5 x 2 MVAR

Rajahmundry :10 x 2 MVAR

Eluru : 4 x 2 MVAR

33/11 kV

Level

APSPDCL April 2015 : 11 x 2 MVAR

May 2015 : 16 x 2 MVAR

July 2015 : 1 x 2 MVAR

Aug 2015 : 2 x 2 MVAR

Sep 2015 : 2 x 2 MVAR

11 kV level


TSNPDCL 123 x 2 MVAR

118 x 2 MVAR

54 x 2 MVAR and 36 x 1 MVAR capacitors

had been installed.

TSSPDCL 221 x 2 MVAR 11 kV level 185 x 2 MVAR erected.

KPTCL Bengaluru Tr. Zone:708.8 MVAR

12.1 kV Retendered on 19.05.2016. PO likely in July

2016. Commissioned by Aug 2017

Bagalkot Tr. Zone :258.1 MVAR

12.1 kV 39 Capacitor Bank supplied- to be erected. 35

nos/ 15 nos inspection raised/ to be raised.11

KV switchgear placed on M/s MEI – delivery

from last week of July 2016

Hassan Tr. Zone :136.3 MVAR

12.1 kV 13 Capacitor Bank supplied- to be erected. 16

nos partially supplied. Balance 11 Nos to be

supplied. 7 nos Capacitor cell installed.

Foundation completed 22 nos.

Mysore Tr. Zone :60.9 MVAR

12.1 kV All 21 nos (2.9 MVAR) Capacitor Bank

supplied.

11 KV switchgear placed on M/s MEI on

28.01.2016

18 Nos Capacitor Banks & 18 Nos DP

Structure started

Gulbarga Tr. Zone :98.60 MVAR

12.1 kV 17 nos (2.9 MVAR) Capacitor Bank supplied.

17 Nos to be supplied.

Tumkur Tr. Zone :281.3 MVAR 12.1 kV

KSEBL 15 MVAR 66 kV Dropped as N/w changed. To be revised after

study.

360 MVAR New proposal to be firmed up

TANGEDCO 34 x 2.4 MVAR 11 kV Materials received. Drawing approvals of 18

sides were pending

36 x 2.4 MVAR 11 kV Additional – Administrative approval

accorded for Coimbatore region

16 x 2.4 MVAR 22 kV 6 x 2.4 MVAR would be installed at

Salem/Coimbatore by July 2016

51 x 2.4 MVAR 22 kV Additional – Administrative approval

accorded for Coimbatore region

7 x 24 MAVR 110 kV Works yet to be taken up

780 MVAR of capacitors at

distribution level had been

commissioned out of 1,005 MVAR

capacitors planned.

21.5.3 PSDF – Funding of the schemes of the state utilities for installation of

capacitors in the state network at transmission / distribution network

21.5.3.1 MS, Appraisal Committee & ED, NLDC vide letter dated 22.06.2016 (Annexure-

XVI) had referred to the schemes of state utilities for installation of capacitors in

the State Network at transmission/distribution network for funding from PSDF.

The matter was deliberated by the Appraisal Committee during the meeting held

on 31.05.2016 wherein, it was decided that assessment of capacitor requirement

may be carried out at regional level by engaging expert agency like CPRI.

21.5.3.2 The issue is scheduled to be deliberated in the Special TCC Meeting to be held on

02.08.2016.

22. OUTSTANDING DUES BETWEEN SOUTHERN AND WESTERN REGIONS

22.1 In the 31st CCM meeting, the following was noted:


Puducherry Electricity Department vide letter dated 01.04.2016 informed that they had

received Rs.27,39,427/- from Maharashtra State Electricity Board (MSEDCL) for

WR-SR bilateral energy transactions done during October 2001 to December 2002.

Pending payments between WR& SR Constituents as on 02.06.2016 are as follows:

State Receivable from Payable to

Entity ` Entity `

Andhra Pradesh /

Telengana

MPPMCL 1,21,76,270 MPPMCL Nil

Karnataka MPPMCL 13,27,208 CSPDCL 73,72,176

GUVNL 9,40,320

Kerala MPPMCL 1,21,47,260

CSPDCL 7,05,279

GUVNL 4,98,019

Tamil Nadu MPPMCL 1,17,17,268 CSPDCL 92,77,878

Puducherry GUVNL 1,02, 721 GUVNL Nil

KSEBL and TANTRANSCO had informed that they had taken up the pending

payment issue with the WR constituents, with a copy to SRPC / WRPC Secretariat.

SRTS II, PGCIL had stated that ` 39,09,165 paid by MPPMCL (MPSEB) towards

50% UI charges from PTC-WR for the energy drawls during September 2002 had

been disbursed to SR constituents.

22.2 Payable amount by PGCIL (WRTS / SRTS) to SR Constituents (as on 02.06.2016)

State/UT Amount

(`)

Received(`) Paid by SRTS II

on 01.04.2016 (`)

Balance to

receive (`)

Andhra Pradesh &

Telangana

47,05,447 3,69,848 10,16,847 33,18,752

Karnataka 49,79,733 3,91,407 10,76120 35,12,206

Kerala 27,58,402 2,16,811 5,96,091 19,45,500

Tamil Nadu 47,21,994 3,71.149 10,20,423 33,30,422

Puducherry 9,24,035 72,629 1,99,684 6,51,722

Total 1,80,89,611 14,21,844 39,09,165 1,27,58,602

SR constituents were requested to take up the pending payment issue with the

concerned WR utility directly, with a copy to SRPC / WRPC Secretariat.

23. NON-AVAILING OF OCC APPROVED SHUTDOWN

23.1 In the OCC Meetings, it was noted with concern that entities were not availing the OCC

approved shut downs as per schedule. The details are given below:

Entity

Mar-16 Apr-16 May-16 Jun-16

App Avl

Avl

% App Avl

Avl

% App Avl

Avl

% App Avl

Avl

%

AP TRANSCO 27 12 44 39 16 41 34 12

35 41 25 61

KPTCL 11 1 9 5 0 0 13 6 46 4 2 50

KER 3 2 67 5 2 40 6 5 83 1 1 100

TANTRANSCO 17 9 53 31 5 16 30 2 7 18 6 33

TSTRANSCO 8 4 50 10 9 90 11 7 64 6 5 83


PGCIL, SR1 22 7 32 29 6 21 28 7 25 36 14 39

PGCIL, SR2 32 16 50 21 7 33 38 13 34 24 13 54

NTPC 4 3 75 2 0 0 3 1 33

NLC 4 4 100 1 1 100 2 2 100

NTECL 1 1 100

NPCIL 4 2 50

KPCL 3 3 100

PNMTC 1 1 100 1 1 100 6 2 33 10 0 0

KTL 1 1 100

MEPL 2 2 100

TOTAL 125 55 44- 146 51 35 179 63 35 145 69 48

Note: App – Nos. approved Avl – Nos. availed Avl % - % Availed w.r.t Approved

23.2 Necessary steps may kindly be initiated to adhere to schedules since it affected ATC/TTC

computations, purchase planning by states etc. All constituents had been suggested to

furnish the list of availed/non availed/emergency shutdowns in the previous month against

the OCC approved dates along with the reason for non-availing by 5th

of every month.

SRLDC was requested to keep the record of deferred or postponed outages (which are

OCC approved) due to system constraints.

23.3 SRLDC had developed a web based outage coordination system for requisitioning the OCC

approved outages on D-3/5 basis which is available at RLDC website (http://scheduling-

srldc.org:8080/OCS/Account/Login.aspx).

24. SPARE ICT AND REACTOR PLACEMENT AND USAGE PROCEDURE

24.1 In the 13th

Meeting, SRPC (14.05.2010), SRPC had approved one number of 400/220 kV,

315 MVA Transformer and one number of 80 MVAR Shunt Reactor as spare for the entire

Southern Region. In Standing Committee meetings also, some of the existing Reactors

(during enhancement with higher capacity) have been recommended to be maintained as

spares. These spares ICTs and Reactors are to be maintained and used during contingency

for short period of time. It has been noted that there is provision for keeping the spare

ICT/Reactor as given below:

Region Equipment Location

SR-I ICT Cuddapah & Hyderabad

Reactor Vizag & Gooty

SR-II ICT Hosur & Tirunelveli

Reactor Tirunelveli

PGCIL is requested to kindly furnish the status of spare ICTs/Reactors available in SR.

Presently, there is no ICT is available as spare. The methodology of using the spare

could be discussed and firmed up.

http://scheduling-srldc.org:8080/OCS/Account/Login.aspx

http://scheduling-srldc.org:8080/OCS/Account/Login.aspx


25. IEGC RELATED ISSUES REQUIRING ATTENTION/ACTION

25.1 Automatic Demand Management Schemes

25.1.1 In line with clause 5.4.2 (d) of IEGC, Automatic Demand Management Scheme was to

have been provided by all constituents by 1st

January 2011. SRLDC & SRPC Secretariat

had repeatedly pointed out that automated scheme was to be in place to meet Regulatory

requirements.

25.1.2 In earlier Meetings, the following had been noted:

AMDS logic was finalized as OD >250 MW or 20 % of Schedule, whichever lower,

for 15 minutes when frequency < 49.8 Hz.

This setting (49.8 Hz) would be reviewed in 29th

TCC for subsequent enhancement

to 49.9 Hz.

25.1.3 The number of incidents satisfying the existing logic and proposed logic is given in the

table. It is recommended to migrate to IEGC limits of 49.9 Hz:

Month

Present settings Proposed settings as per IEGC

Frequency < 49.8 Hz for 15

Min. and OD = Min DSM

limit

Frequency < 49.9 Hz for 15 Min. and

OD = Min DSM limit

No of

instances

meeting the

freq. limit

No of

instances

applicable to

states

No of

instances

meeting the

freq. limit

No of instances

applicable to states

AP TN

March-16 0 Nil 23 7 0

April-16 0 Nil 77 12 4

May-16 1 Nil 33 14 5

June-16 0 Nil 44 8 8

25.2 UFR and df/dt reliefs

25.2.1 All States have implemented AUFR and df/dt schemes fully. SRPC vide letter dated

29.01.2016 had submitted status report duly certified by SRLDC and SRPC wrt

implementation of SCADA mapping of all constituents to Hon’ble CERC in respect of

Order dated 27.11.2015 vide Petition No. 60/MP/2014. Details of recommended,

implemented, SCADA monitorable and actual relief being realized are shown in the

Table below:

State AP TS KAR KER TN PUD SR

Recommended MW A 2782 2965 3539 1173 4176 103 14738

Implemented MW B 2782 2978 3559 1207 4544 116 15186

% B/A 100 100 101 103 109 113 103

SCADA

monitorable MW

C

1169 1898 3557 1184 3849 116 11773


Wrt

implemented %

C/B

42 64 100 98 85 100 78

Average Visible

Relief in May

2016 MW

E

1218 837 2556 1142 1982 94 7829

Wrt monitorable % E/C 104 44 72 96 51 81 67

Average Visible

Relief in June

2016 MW

F

1117 825 2077 991 1794 91 6896

Wrt monitorable % F/C 96 43 58 84 47 78 59

25.2.2 In earlier Meeting, the following was noted:

TSTRANSCO had informed that they had achieved about 70 % mapping.

APTRANSCO had informed that they would ensure 74 % mapping by June 2016.

SRPC had informed that in the NPC meeting it has been noted that there could be no

uniform df/dt settings. Settings for SR would be deliberated in the

Protection/Operation sub-committee Meetings. All constituents had been requested to

take steps to achieve 100 % mapping to comply with Order of Hon’ble CERC.

25.2.3 In the 5th

NPC meeting held on 8.4.2016 (refer Annexure-I), the following had been

noted:

Ensuring proper functioning of Under Frequency Relay (UFRs) and df/dt relays

“After deliberation it was agreed that each RPC would ensure proper functioning of

UFR and df/dt relays as per the agreed procedure of the region. Actual tripping of

feeder may not be required to test the healthiness of the UFRs. It was also agreed

that RPCs would sent their comments/suggestion on preparation of procedure for

certification of healthiness of UFR and df/dt relays”.

Observation on present UFR setting by Hon’ble CERC Order dt. 27.11.2015 in

Petition No.113/MP/2014.

“After deliberation, NPC decided that there was no need to review the setting of UFR

and df/dt in present power scenario”.

25.3 Restricted Governor Mode of Operation (RGMO)/FGMO of Generating Units

25.3.1 RGMO response is being analyzed in the meetings of OCC. SLDCs were to analyze

RGMO instances posted by SRLDC for the generators in their control area and initiate

suitable action as per orders in respect of 84/MP/2015. Inadequate Response was to be

taken up with SERC (Petition No.302/MP/2013).

25.3.2 Performance of RGMO is being analyzed in the OCC. The summary of instances is given

in the Table below:

For the incident on 14th

March 2016 (at 01:36 Hrs Frequency change from 49.99 to 49.82 Hz)

State Hydro Thermal TOTAL


Possible

(MW)

Actual

(MW) %

Possible

(MW)

Actual

(MW) %

Possible

(MW)

Actual

(MW) %

AP 5.9 1.3 22.6 145.9 110.6 75.8 151.8 112.0 74

TG 6.2 0.0 0.0 82.8 36.2 43.8 89.0 36.2 41

KAR 2.7 6.2 232.3 152.4 0.0 0.0 155.1 6.2 4

KER 9.9 12.0 121.4 0.0 0.0 9.9 12.0 121

TN 6.7 0.0 0.0 148.2 25.5 17.2 154.9 25.5 16

CGS 0.0 0.0 452.4 119.9 26.5 452.4 119.9 27

SR 31.4 19.6 62.2 981.7 292.3 29.8 1013.1 311.9 31


April 2016 (at 01:19 hrs. frequency change from 49.99 to 49.80 Hz)

AP 188 37 19.6 0 0 187.89 36.87 19.6

KAR 181 7 3.6 16.84 18.17 108 198.17 24.77 12.5

KER 0 0 16.06 35.27 220 16.06 35.27 219.6

TG 83 50 60.3 2.96 -0.66 -22 86.24 49.52 57.4

TN 175 5 3.1 20.02 0 0 194.87 5.46 2.8

ISGS 519 87 16.7 0 0 519.47 86.54 16.7

SR 1147 186 16.2 56 53 94.5 1203 238 19.8


May 2016 (at 17:31 hrs. frequency change from 50.05 to 50.45 Hz).

AP -104 -59 57.3 0 0 -103.6 -59.4 57.3

KAR -166 -42 25.5 -0.8 -20.1 2513 -167.1 -62.5 37.4

KER 0 0 -2.4 -11.3 471 -2.4 -11.3 470.8

TG -87 -87 100.3 0 0 -86.7 -87 100.3

TN -133 -56 42.5 -0.8 -1.4 175 -133.55 -57.83 43.3

ISGS -457 -160 35.0 0 0 -457.23 -159.93 35.0

SR -947 -405 42.8 -4 -33 820.0 -951 -438 46.1


June 2016 (at 14:27 hrs. frequency change from 49.89 to 50.37 Hz).

AP -161 -118 73.6 -2.7 -2.7 -163.2 -120.8 74.0

KAR -171 -10 6.0 -46.5 0 0 -217.9 -10.2 4.7

KER 0 0 -13.2 -12.7 96 -13.2 -12.7 96.2

TG -75 -64 85.6 0 0 -74.8 -64 85.6

TN -132 -47 35.9 -5.8 -0.8 14 -137.8 -48.2 35.0

ISGS -433 -172 39.8 0 0 -432.6 -172 39.8

SR -971 -412 42.4 -68 -16 23.8 -1040 -428 41.2

25.3.3 SRLDC vide letter dated 14.07. 2016 (Annexure-XVII) had furnished a summary report

of RGMO performance of generating stations of SR during quarter-1 (April-June 2016)

to Hon’ble CERC. SRLDC vide letter dated 06.07.2016 (Annexure-XVIII) had taken

up the issue of primary response referring to NLDC letter dated 27.6.2016.

25.3.4 Regarding extension of RGMO status point to SRLDC/SLDC, the following had been

noted in the Meetings of OCC:

APTRANSCO: Upper Sileru (Cable problems) & Machkund (RTU problem) stations

yet to be extended.


TSTRANSCO: Hydro units to be extended. RGMO was enabled for KTPP St 2 Unit

but status point to be updated.

TANTRANSCO: MTPS- I & II & Hydro stations status point to be extended. Status

point of Mettur Stage III is extended to SLDC.

KPCL: All the status point (except Raichur Unit IV) had been extended to SLDC. It

was informed that these points can be extended to SRLDC also. Status points of all

hydro units like Almathy, Kadra & Gerusoppa HEPs to SLDC had been made

available but yet to be configured to SLDC. RGMO was implemented in BTPS U-3

and has been enabled.

25.3.5 Hon’ble CERC had issued Order on 23.10.2015 in respect of Petition No.

302/MP/2013 and the following was agreed in the 28th

TCC meeting:

Certification regarding declaration (DC) being in conformance with 100 % MCR

(based on CERC order) and other provisions of the Order/Regulation would be

obtained from the generators.

SRLDC would schedule up to the DC of the generators.

In real time, RGMO performance would be monitored

25.3.6 In the OCC Meetings, SRLDC had informed that in the absence of declaration certificate

from all the generators they would be restricting the schedule to the minimum of

Normative DC taking care of the Units on bar and DC declared by the station.

25.4 Demand Estimation for Operational Purpose (Clause 5.3 of IEGC)

25.4.1 Each SLDC was to create a mechanism and facilities to facilitate on-line demand

estimation of demand for daily operational purpose for each 15 minutes block by

01.01.2011. In this regard, following may kindly be noted as contained in Order dated

19th

December 2013 of Hon’ble CERC in Petition No. 249/250/251/MP/2012:

“We direct all STUs/SLDCs of the Northern Region, Southern Region and Eastern

Region to forecast their demand and make adequate arrangements to avoid dependence

on Unscheduled Interchange for meeting their demand or for injecting short term

surplus power, irrespective of the frequency.”

Load Forecasting tool meeting the regulatory requirement is yet to be developed by all

the utilities.

25.4.2 In the OCC Meetings, it was noted that forecast was required for RRAS and Renewable

Framework

25.5 Sudden Change in Demand/Frequency Excursion

25.5.1 In the earlier Meetings, violation of Clause 5.2 (j) of the IEGC Regulations has been

highlighted. No user is to cause sudden variation in its load by more than 100 MW

without prior intimation to and consent of the RLDC. Similarly no user should reduce the

generating unit output by more than 100 MW without prior intimation to and consent of

the RLDC. Necessary action is sought in respect of demand and generation management


as well as power purchases, so that clause 5.2 (j) of IEGC Regulations is not violated.

25.6 Arranging of interruptible loads in four groups

25.6.1 As per IEGC, to maintain the frequency within stipulated band and also to ensure

network security, interruptible loads are to be arranged in four groups of loads. This was

for the purpose of scheduled power cuts/load shedding, loads for unscheduled load

shedding, loads to be shed through UF relays, df/dt relays and loads to be shed under any

SPS Scheme. These loads are to be grouped in such a manner that there was no

overlapping between different groups of loads.

25.6.2 Existing schemes are not meeting Regulatory requirement fully and further action is

required in this regard please.

25.7 PSS Tuning

25.7.1 3rd

Meeting of PSS tuning was held on 28.06.2015 and MoM is available at SRPC

website. PSS Study group also analyzed the Step Response Test Reports for the

generators which had furnished the reports and the recommendations had been finalized.

It is kindly requested that necessary action may kindly be taken as finalized in the 3rd

meeting of PSS.

25.7.2 The following units were yet to carryout Step Response Test (PSS Tuning) and the action

plan/schedule for SRT was finalized in the 3rd

PSS Meeting:

Entity Stations/Units

APGENCO Vijayawada TPS U 5 & U6, Lower Sileru HEP U2 to U4, Upper

Sileru HEP U1 to U4, Srisailam RB HEP U1 to U7.

AP IPPs HNPCL U 1 & U2, All gas generating stations

TSGENCO Kakatiya TPP U 2, Kothagudem TPS U5 to U8, Nagarjunasagar HEP

U1, Srisailam LB HEP U1 to U6

KPCL Raichur TPS U1 to U8, BTPS U1 & U2, Yeramarus TPP , Almathy

HEP U2 to U6, Sharavati Tail Race U1 to U4, Varahi UGPH HEP U1

to U4, Nagjheri HEP U1 to U6, Sharavathy HEP U1 to U10

KAR IPPs JSWEL U1 to U4

KSEBL Idukki HEP U1 to U6, Lower Periyar HEP U1 to U3, Sabarigiri HEP

U1 to U6

TANGEDCO NCTPS St- I U1 to 3, NCTPS St-II U1 & U2, Tuticorin TPS U1 to

U5, Mettur St-I TPS U3, Mettur St-II TPS U1, Kundah III HEP U1

to U3, Aliyar HEP U1, Kodayar I U1, Kadamparai HEP U1 to U4,

Kovil Kalappal (Gas)

TN IPPs: STCMS, Private Gas Stations

CGS NTPC, Ramagundam STPS U1 to U7, NTPC Talcher STPS St-II U 4

to U5, NTPC Kudgi, NTPC- RGCCP, Kayamkulam 2 GTs & 1 ST,

NTECL- Vallur TPS U1 – U3, Neyveli TPS I U7 to U9, Neyveli TPS

I Exp U1 & U2, Neyveli TPS II U1 to U7, Neyveli TPS II Exp U1

& U2, (NLC & TN JV)NTPL U1 & U2, NPCIL- KGS U1 to U4,


NPCIL- MAPS U1 & U2

ISTS connected

IPPs

Simhapuri Energy Ltd (SEL) U 1 to U4, MEPL U1 & U2, , Coastal

Energen U1 & U2, IL& FS U2, Lanco Stage II & III, SGPL, Nellore

25.8 Scheduling of Simhadri STPS Stage-I by SRLDC

25.8.1 APTRANSCO had filed a Petition in CERC in this regard and the petition was admitted

on 7th January 2016. A hearing in this regard is also scheduled on 16th February 2016.

25.8.2 Commission had reserved Order in the matter in respect of Petition No.291/MP/2015

25.9 SPS related Issues

25.9.1 Implementation of additional loads for KKNPP Unit-2 SPS

25.9.1.1 Unit II of Kudankulam was expected by July 2016 and all constituents thus need to

identify the feeders for the quantum envisaged as given below:

25.9.1.2 In the OCC Meeting, it was noted that Karnataka and Puducherry were yet to identify

loads for KKNPP Unit-2 SPS. In 121st OCC meeting a mock test for the identified

loads was proposed to be carried out in July 2016.

25.9.2 SPS Maintenance Protocol

25.9.2.1 In the 28th

Meeting of SRPC, SPS Maintenance Protocol to be implemented by PGCIL

was agreed. In the OCC Meetings, PGCIL had informed that Management Approval

has been received and the order may be placed on M/s Alstom.

25.10 Instantaneous Scheme for Sudden Withdrawal of Wind

25.10.1 TANTRANSCO had implemented the SPS for sudden withdrawal of Wind generation

at Udumalpet and Kayathar area and the same was in operation with effect from

27.04.2016.

25.10.2 In the Special / OCC meeting, KPTCL had also been suggested to implement

instantaneous scheme for sudden withdrawal of wind in line with TANTRANSCO.

25.11 Energy Generation data Management from Renewable Energy Sources

25.11.1 Monthly generation data in respect of renewal energy sources is to be submitted to

CEA with a copy to SRPC.

Trip

Signal AP KAR KER TN TS PUDU SR

KKNPP 116 174 91 315 132 20 848


25.12 Pending issues in respect of NPCIL / BHAVINI Units

25.12.1 A Special Meeting on pending issues in respect of NPCIL/BHAVINI was held on 19th

May 2016 in SRPC, Bengaluru (MoM available at SRPC website). The following was

deliberated:

Deviations of planned outages of NPCIL units

Maintenance of Units should not be planned during the period January to May of

the year in view of high demand in Southern region.

NPCIL to adhere to maintenance schedule finalized in the annual outage plan/OCC

without deviations.

Status of 2 x 125 MVAR Reactors at Kaiga GS

In view of grid requirement and time involved in procurement/commissioning of

reactors, NPCIL was recommended to take up procurement of both 125 MVAR

reactors simultaneously.

KKNPP Stage-II (2 x 1000 MW) and reactors planned were 2 x 125 MVAR

NPCIL assured that they would take up the matter with CTU regarding finalization of

reactive requirements, keeping in view no absorption by the Stage II units. Limitation

of 100-150 MVAR absorption for limited period but not on a sustained basis would

also be communicated.

Enabling of Auto Reclose feature

Kaiga-Guttur Lines

Time differentiated A/R scheme of 400 kV Kaiga- Guttur lines would be

implemented by June 2016. A/R scheme may be reviewed subsequently, in case more

trippings occur.

KPTCL was also suggested to increase patrolling and maintain ROW of the line.

Clearing of ROW was required to be taken up once before the monsoon commences

and also immediately after monsoon. Specific instructions in this regard needs to be

communicated to field staff (copy of which would be furnished to SRPC/SRLDC).

400 kV KKNPP – Madurai line

Concern of KKNPP regarding shunt reactor /PIR would be taken up with PGCIL.

Subsequently, the A/R implementation would be reviewed.

Status update on KKNPP-Tuticorin PS D/C lines would be sought from PGCIL.

All 230 kV lines emanating from MAPS

MAPS agreed to implement the A/R scheme by June 2016

All 230 kV lines emanating from BHAVINI

BHAVINI was suggested to implement A/R scheme by June 2016.

MVAR interchange at Kaiga GS and KKNPP Tap changing at Kaiga GS and KKNPP

KKNPP and KGS confirmed that they would issue specific directives to control room

to control the VAR injections above 400 kV and 220 kV, as applicable. They would


also make the control room staff aware of grid requirements and about the action to

be taken by them.

In case further restrictions are coming up with regard to MVAR absorption at KGS, it

was very imperative that KGS goes for 2x125 MVAR reactors now itself.

Pending SCADA inputs from NPCIL/BHAVINI

MAPS, KGS, KKNPP and BHAVINI to take action as deliberated in the Meeting.

Difficulties in laying OFC cable in switchyard of Kaiga GS

It was noted that in the communication meeting held on 17.5.2016, PGCIL had

informed that the issues had been resolved and the works would be completed by the

end of June 2016.

Declared Capacity (DC) revision in case of generating Unit outages/revisions

KGS, MAPS and KKNPP also felt that DC should be close to actual. Necessary

mechanism would be put in place to avoid such discrepancy.

It was noted that redundant internet connectivity needs to be ensured by NPCIL units.

Planning of Black Start Mock drill of Nuclear Power Plants

It was agreed that Black Start Restoration Procedure Mock Exercise for Nuclear

Power Plants would be co-ordinated on days of Bus Shutdown / maintenance

program. The station would take care of necessary resources required for such Mock

Exercise and co-ordinate effectively. In this regard, it was agreed to have a plant level

meeting with SRLDC and develop an internal procedure for detailing sequence of

operations required at plant level in a similar manner as was earlier done for NTPC,

Ramagundam.

Status of recommendations finalized in PSAG-14 meeting held on 16.12.2015

MAPS to complete all actionable points.

25.13 Un-requisitioned Power

25.13.1 Hearing of CERC on Petition No. 16/SM/2015 (Difficulty encountered in

implementation of the Commission`s order dated 5.10.2015 in Petition No.

310/MP/2014 regarding scheduling of unscheduled surplus power from the inter-

State generating stations) was heard on 23.02.2016. CERC Order is awaited.

25.13.2 The issue of URS sale was discussed in the OCC Meetings. MoP vide letter dated

09.05.2016 (Annexure-XIX) had suggested for enabling of URS sale in order to

implement the provisions of Tariff Policy, and it was requested to kindly take

necessary action.

25.14 Treatment of Bilateral short term and collective transaction in case of grid

disturbances

25.14.1 In the 5th

Meeting of NPC held on 08.04.2016 (refer Annexure-I), after deliberations,


NPC decided that in view of the comments received on the proposed accounting

methodology, the Working Group would meet again to arrive at consensus on the

methodology. The finalized methodology would be put up to NPC in the next

Meeting for approval.

25.15 Power swing blocking (PSB) setting in Distance relays

In the 5th

Meeting of NPC held on 08.04.2016 (refer Annexure-I), NPC while agreeing

to NRPC's opinion to have a uniform PSB setting across all regions, decided to

maintain status quo in different regions and await the report of the Consultant appointed

for implementation of the recommendations of the 'Task Force for Power System

Analysis under contingencies' before further deliberations in the matter.

25.16 Other Issues requiring kind attention of TCC / SRPC

The following issues which are being followed up in the Meetings of Sub-Committees of

SRPC merit kind attention:

a) It was noted that some of the units / elements were being commissioned from

retrospective dates. Recently, Kakatiya TPS Stage-II (600 MW) unit was

commissioned by TSGENCO retrospectively from 24.03.2016 and the same was

informed to SRLDC on 20.05.2016. It was noted that proper procedure for testing,

declaration of COD etc. is to be followed diligently.

b) Hon’ble CERC had brought out CERC (Deviation Settlement Mechanism and related

matters) {Third Amendment} Regulation 2016 which was implemented with effect

from 30.05.2016. Definition of renewable rich state and deviation limits for

renewable rich states etc. have been specified for computation of charges and

additional charges for deviation. In this regard SRPC vide letter dated 30.05.2016

(Annexure-XX ) had requested all constituents to verify the wind and solar installed

capacity values which is tabulated and furnish certified installed capacity of wind

and solar in state control area (excluding the wind/solar being scheduled by SRLDC).

It was also requested that whenever the installed capacity increases to more than

1,000 MW and more than 3,000 MW, values need to be certified and communicated

to SRPC. Whenever scheduling responsibility changes from SLDC to SRLDC the

revised figures are also needed to be certified and communicated.

c) Ramagundam ICT 2 is under prolonged outage from 30th

June 2015. Replacement of

this faulty 200 MVA, 400/132kV ICT with 315 MVA, 400/220kV ICT by

TSTRANSCO was agreed in 39th

Standing Committee. SRLDC vide letter dated

01.06.2016 had requested TSTRANSCO that immediate action may kindly be taken

for commissioning of the new ICT as there is continuous violation of N-1 security

constraints during peak hours due to the non-availability of the ICT, which may lead

to cascade tripping and loss of load. TSTRANSCO informed that ICT had reached

site and commissioning/erection activities had started was expected to on bars by end

of July 2016.


d) N’Sagar – Cuddapah FSC 1 at Cuddapah station is under prolonged outage from 12th

March 2016 from due to capacitor failure. SR-I, PGCIL had informed that

rectification works were under progress and were expected to be completed by end of

July 2016.

e) The issue of frequent tripping of Vallur- NCTPS lines due to insulator tracking and

causing heavy dip in voltages was under discussion since May 2014. NTECL has

been continuously raising the issue of regular washing of the insulator/replacement

with polymer insulators. TANTRANSCO had been requested to go for complete

replacement of the insulators with polymer insulators. Gantry insulator replacement

was to be carried out either by NTECL / PGCIL for the other lines emanating from

NTECL.

f) Regarding NLC TS II – NLC TSI Expn reconducting works, it was noted that end

span works were yet to be reconductored. SR-II PGCIL had informed that BOQ had

been put up for management approval.

g) Regarding implementation of URTDSM (PMU) project in SR, PGCIL had informed

that in the first phase, installation of 62 PMUs were under progress. In the Special

SCADA/communication Meeting held on 17th

May 2016, constituents/generators

expressed the difficulties being faced w.r.t . PMU installation at sites under

URTDSM. Following had been finalized after deliberations:

PGCIL to furnish detailed procedure with respect to PMU installations under

URTDSM project viz, roles and responsibilities of users, responsibility upon

receipt of equipment at location, responsibilities during the installation, O&M

after installation, handing over, mandatory spares / O&M Spares responsibility

etc.

Prior communication about material supply, commissioning, installation, testing

etc would be ensured to identified Nodal Officers.

PGCIL Official should be present during material receipt and during

installation/commissioning/testing.

Equipment handing over procedure should be clearly specified.

Regarding O&M, the concerned entity would inform PGCIL regarding any issue

and in-turn PGCIL would get the issue resolved.

h) Status of Video Conferencing facility at SLDCs is given below:

State Status KER SLDC &TS SLDC Implemented

AP SLDC Would be provided at Vijayawada by

Dec 2016

KAR SLDC All equipments installed final

connectivity to be made through.

TN SLDC PO placed- would be implemented by

Oct 2016.

PUD SLDC Budget for 2016-17 not yet finalized.

i) SRLDC had taken up ICT Tap optimizations studies periodically and suggested tap

change action at 765/400 kV and 400/230-220 kV SS. However, this optimization is

effective only if it is carried out upto sub transmission level. To expand optimization

study to this level, SRLDC had requested 230/110 kV, 220/110 kV, 220/66 kV,


210/130 kV transformer technical data and voltage data from SCADA for peak and off

peak scenario. Constituents which have not furnished the data in the requisite formats

are requested to please furnish the same.

j) SRLDC had emphasized the need for alternate path between Somanahalli and SRLDC

and requested PGCIL to ensure the redundant alternate path considering the recent

SCADA blackout for long duration due to fiber cut between Somanahalli & SRLDC.

SRLDC requested SRPC to take up the requirement with Senior Management of

PGCIL and flag the issue to TCC / SRPC. SRLDC vide letter dated 16.06.2016

(Annexure-XXI) has taken up the issue with POWERGRID SR- II in this regard.

SRPC vide letter dated 13.06.2016 (Annexure-XXII) had taken up the issue of

OPGW stringing works in Karnataka enclosing SR II, PGCIL letter dated 09.06.2016.

In the 121st OCC, SR-II PGCIL had informed that Powertel OFC redundant

connectivity was available to SRLDC.

k) All tripping details need to be uploaded on SRLDC web portal. Para 29 of Hon’ble

CERC Order dated 20.02.2014 in respect of Petition No.146/MP/2013 is brought to

kind attention. Non furnishing of timely tripping details would be treated as non-

compliance. Tripping information details are to be uploaded within the stipulated time

frames.

l) Information regarding Cyber Security to be furnished to Chief Engineer, DPD, CEA,

New Delhi. Report on Physical Security, other Mock Drills for CMP, Mock Drill for

Black Start Restoration to be furnished to Chief Engineer, DMLF, CEA,New Delhi.

Copy of the report is to be sent to SRPC Secretariat by e-mail.

m) Procedure for restoration of remotely controlled sub stations of PGCIL along with the

contact no. of the person who would take care during emergency conditions needs to

be developed and furnished to SRLDC. SR-II PGCIL had furnished the partial details

in this regard. Comprehensive procedure was yet to be developed.

n) Auto Reclose feature was to be enabled for 220 kV Ambewadi – Ponda and Nagjheri

connected lines. Regarding Ambewadi-Ponda, KPTCL had informed that the R&M

works were going on for this line and the A/R would be covered in R&M works.

Regarding Nagjheri connected lines, KPCL had informed that numerical relays had

been received and works would to be completed by August 2016.

o) Operation of Nagarjuna Sagar in pump mode.

p) SRLDC had expressed concern on high loadings and N-1 violation of ICTs in TN

(Arasur, Udumalpet, Pugalur, Trichy, Madurai,), AP (Vemagiri), KAR (Somanahalli,

Mysore, Hoodi & Nelamangala) and TS (Ramagundam). It was pointed out that there

was insufficient action in controlling the loading of ICTs leading to N-1 criteria

violation in compliance of Regulation 3.1f (8) of CEA (Grid Standards) Regulations

2010 and Regulation 3.5 a(i) of CERC Indian Electricity Grid Code Regulations 2010.

q) SRLDC had expressed concern about the line loading on 400 kV Gooty-Nelamangala ,

Gooty-Somanahalli and Hiriyur-Nelamangala lines which were violating N-1 criteria.

r) RRAS generators had expressed concern that Forms AS-4 & AS-5 were not being

received by them as stipulated in Procedure. This information was sought by the

Management and by the Accounts Section to settle the bills. SRLDC had clarified that

the nodal agency (NLDC) was issuing Up/Down regulation through SRLDC. RRAS

as reason was being showed in remarks of Form “D”. The exact details of block wise


schedule were being shown for every revision and implemented schedule was

available in SRLDC website. Accordingly necessary information is already available

on the SRLDC website. Regarding details of timing and reasons for kicking in, NLDC

was preparing a monthly report and the same was being submitted to CERC which

would be shared with the constituents. Quantum conveyed by NLDC (Nodal agency)

may get changed at RLDC while scheduling due to ramp up/ ramp down rates and

other pending requisition (of beneficiaries). Thus forwarding the message to

generators in real time may not be feasible. Implementation difficulties are being faced

by Nodal agency and accordingly the Procedure would be relooked after experiencing

for 6 months and this clause could be modified.

26. AUGMENTATION OF TALCHER-II TRANSMISSION SYSTEM

26.1 KSEBL vide letter dated 25th

September 2015 had stated that since all Southern states

would get benefitted with the early commissioning of Talcher-II transmission system, all

SR Constituents may jointly implead as a party in the Civil Appeal filed by TNEB before

Hon’ble Supreme Court. In the 27th

TCC meeting it was suggested that SR constituents

may jointly implead as a party in the Civil Appeal filed by TNEB in Honorable Supreme

Court.

26.2 Hon’ble Commission in its Order dated 05.11.2015 in respect of Petition No. 14/SM/2015,

in the matter of ‘Notice under Section 19 of the Electricity Act, 2003 for revocation of the

inter-State transmission licence granted to Talcher II Transmission Company Ltd.’ had

passed the Order :

‘13. In exercise of our power conferred under Section 19 (3) of the Act and Regulation 20

of the Transmission Licence Regulations notice is given to the licensee to show cause

within three months from the date of this order as to why the transmission licence granted

for the transmission project should not be revoked in terms of the provisions of Section 19

of the Electricity Act and Transmission Service Regulation as quoted above. If no

response is received within three months from the date of issue of the order, the licence

shall be deemed to have been revoked.’

26.3 In the 29th

SRPC Meeting, TANTRANSCO had stated that as discussed in earlier SRPC

meeting, all constituents had been suggested to jointly implead but no action has been

taken. They were in the process of invoking the Bank Guarantee.


27. INCLUSION OF DRAWAL OF MAHE IN REA

27.1 PED vide letter dated 11.01.2016 had informed that including the drawl of Mahe region

into REA was approved in 21st SRPC Meeting. It had been requested to arrange for ABT

compliant SEMs at both the ends.

27.2 In the 29th

SRPC Meeting the following had been noted:

Puducherry ED had informed that the S/S is owned by PED but maintained by

KSEBL and thus applying for LTA with Kerala did not arise. The communication

and the metering requirements had been established and the procedure could be

agreed at the earliest.

KSEBL had stated that in view of the ownership of the S/S by PED they would look

into the matter. The drawal visibility needed to be ensured at Kerala SLDC.

Director, KSEBL had agreed to look into this matter favorably.

27.3 SRPC vide letter dated 08.07.2016 had requested the following:

Total number of interconnections between Kerala and Mahe with complete details

The Status of RTU – communication facility to SRLDC from KSEB and Mahe ends

The SEM scheme installed

The status of petition to be filed in CERC for the approval of YTC of line (s)

between Kerala and Mahe

28. SHARING OF TRANSMISSION CHARGES OF TRANSMISSION ASSETS OF

NATIONAL IMPORTANCE

28.1 Hon’ble Commission in its Order in Petition No. 67/TT/2015 (Sharing of Transmission

charges) had stated the following in Para 30:

“Since, these assets are proposed to be considered as assets of national importance and

all the regions are proposed to bear the transmission charges, we consider it necessary

to hear the DICs of all the regions”.

28.2 The following had been deliberated in the 29th

SRPC Meeting:

KSEBL/TANTRANSCO had stated that the planning of this system had not been

deliberated in the Standing Committee of SR and SRPC meetings. In the present

scenario the SR constituents were unlikely to reap any benefit from this HVDC links

between NER and NR.

PGCIL had stated that Kerala and Tamil Nadu were the main beneficiaries of Raigarh

– Pugalur – Madakathara HVDC link. Hence, all the constituents should show

positive approach towards sharing of the transmission charges for the assets of

National importance.

It was agreed that Chairperson, SRPC could take up the issue and concerns of SR

constituents with Chairperson, CERC.


28.3 Subsequently, Chairperson, SRPC vide letter dated 16.03.2016 (Annexure-XXIII) had

taken up the issue with Chairperson, CERC.

In the ROP for date of order dt.03.03.2016, the following had been stated:

‘…Accordingly, we direct that the transmission charges allowed in para 6 of this order

shall be provisionally recovered from DICs of all regions in accordance with the

provisions of Central Electricity Regulatory Commission (Sharing of Inter-State

Transmission Charges and Losses) Regulations, 2010 as amended from time to time,

subject to the final decision of the Commission in the present petition. It is further

directed that any grant/assistance received from Government of India/PSDF Fund shall

be applied to reduce the cost of the assets and consequently, the Order in Petition

No.67/TT/2015 Page 13 of 13 transmission charges of these assets. We direct PGCIL to

pursue the matter in the right earnest for early release of grant/assistance.

The matter shall be listed on 14.4.2016 for further directions.’

In the ROP for date of hearing 19.04.2016, the following had been stated:

‘………..The Commission directed the respondents, who have not filed their reply, to file

reply as a last opportunity by 29.4.2016 and the petitioner to file rejoinder, if any, by

6.5.2016. The Commission directed the parties to comply with the directions within the

timeline specified.

4.The Commission directed to list the matter on 31.5.2016 for final arguments.’

29. APPROACH BEING TAKEN BY CTU FOR RESERVING THE TRANSMISSION

CAPACITY FOR THE CUSTOMERS WHO HAVE AVAILED LTA WITHOUT

IDENTIFYING BENEFICIARIES

29.1 The following was noted in the earlier SRPC Meetings:

KSEBL had pointed out that the generators had been granted LTA with target region

about 5-6 years ago. The prospect of entering PPAs by these generators was quite

remote. Most of the generators were selling power under STOA/MTOA. Many

generators were not paying transmission charges since LTA had not been

operationalized. Basic issue was the time limit for the LTA to get operationalized and

also applicability of the transmission charges. KSEB felt that this arrangement was

blocking eligibility of other states.

CTU had stated that most of the referred generators had been granted LTA in 2009-10.

Transmission corridors were planned for them which was getting commissioned in

phases. LTA would get operationalized once the identified system is commissioned

and they would be liable to pay transmission charges. System takes around 3 -4 years

to develop. It was also pointed out that the Regulation allowed application with only

target region.

29.2 KSEBL issue was further heard on 26.04.2016 by Hon’ble CERC on Petition No.

249/MP/2015. In the ROP ( date of hearing 19.05.2016) CTU had been directed to file

minutes of SPRC meeting held during 14.3.2016 to 17.3.2016. The petition was listed for


hearing on 30.6.2016.

30. STATUS OF PHASE I AND PHASE II OF PROTECTION AUDIT

RECOMMENDATIONS

30.1 The timelines given by Hon’ble CERC to various SR-Constituents for the completion of

their respective Phase-I and Phase-II works of Protection Audit recommendations are given

below:

Sl.

No. Constituent

CERC

Petition No.

/Date of

Order

Date for

completion

of Phase-I

activities

Date for

completion

Phase-II

activities

Remarks

1 APGENCO 146/MP/2013

Date of Order:

20.02.2014

Affidavits dt:06.09.2014 &

17.09.2014 were filed on

behalf of APGENCO in CERC

duly stating that the

implementation of Phase-l &

Phase-II activities of Thermal &

Hydel Stations would be

completed by 31-05-2015 & 31-

12-2015 respectively, pursuant

to CERC order dated

20.02.2014 against the Petition

No.146/MP/ 2013.

APGENCO informed vide

their letter dated

17.02.2016 that the

process of filing single

Affidavit on behalf of

APGENCO Thermal &

Hydel stations in CERC is

under process to consider

for extension of time up to

30.07.2016 & 31.12.2017

respectively for

implementation of all the

identified activities of

APGENCO Thermal &

Hydel Substations.

2 APTRANSC

O

IA No.

10/2016

95/MP/2015

Date of Order :

15.06.2016

31.08.2016 31.08.2016 ‘Taking note of difficulty

projected by the petitioner,

we allow time to the

petitioner till 31.8.2016 as

a last opportunity for

completion of Phase-I and

Phase-II of protection

audit remarks failing

which the petitioner shall

be liable for proceedings

under Section 142 of the

Electricity Act, 2003 and

other relevant provisions’

3 TSGENCO 146/MP/2013

Date of Order :

20.02.2014

TSGENCO made Affidavit dt:

16.12.2014 on status of

implementation of Phase-I and

Phase-II activities pursuant to

CERC order dated 20.02.2014

(Petition No. 146/MP/2013) and

informed to complete the above

subject work on 31.08.2015.

TSGENCO have filed an

affidavit before Hon’ble

CERC seeking further

time extension up to

31.03.2017 for

implementation of balance

activities of Phase-I and

Phase-II recommendations

against the CERC Order

dated 20.02.2014 in

respect of petition no:


146/MP/2013 with IA.

36/2013.

4 TSTRANSC

O

83/MP/2015

Date of Order :

14.5.2015

31.10.2015 31.08.2016 TSTRANSCO informed

that Phase-I activities are

under advanced stage of

completion as Erection &

commissioning of the

same are in progress.

5 KPCL 265/MP/2015

Date of Order:

03.05.2016

374/MP/2014

Date of Order:

18.8.2015

31.12.2016

31.10.2015

31.12.2016

31.12.2015

"Taking note of difficulty

projected by the petitioner,

we allow time to the

petitioner till 31.12.2016

as a last opportunity for

completion of Phase-I and

Phase-II of protection

audit remarks. If the

petitioner fails to comply

with the order, it shall be

liable for action under

Section 142 of the

Electricity Act, 2003 as

already observed in our

order dated 20.2.2014 in

Petition No.

146/MP/2013.”

6 KPTCL 374/MP/2014

Date of Order :

18.8.2015

15.1.2016 15.1.2016 KPTCL filed a separate

application before CERC

on 07.01.2016 seeking

time extension up

to 31.05.2017, and the

same is under

consideration by CERC.

7 KSEB 86/MP/2014

Date of Order :

18.8.2015

31.12.2015

31.12.2015

(excepting for

R&M works at

Idduki HEP for

which time

extension is up

to 31.3.2016)

KSEB filed an affidavit

dated 20.05.2016 seeking

further time extension up

to 31.11.2016 (Phase-I)

and up to 31.12.2017

(Phase-II) except for

Idukki HEP for which the

time extension has been

sought up to 31.12.2020.

In the ROP for date of

hearing 14.07.2016

‘Commission directed the

petitioner to implead

Southern Regional Power

Committee and Southern

Regional Load Despatch

Centre as party to the

petition and file revised

memo of parties………..


The petition shall be listed

for hearing 30.8.2016’

8 TANTRANS

CO

374/MP/2014

Date of Order :

18.8.2015

30.6.2016 30.11.2016

9 NPCIL 146/MP/2015

Date of Order :

20.02.2014

01.05.2014 01.09.2014 As per the status furnished

to SRPC, out of the total 9

recommendations given

covering KAPS and

MAPS, two no. of

recommendations

pertaining to MAPS are

yet to be complied with.

30.2 From the above, it can be kindly seen that time extensions given to various Constituents

have been completed. As such, following SR-Constituents, viz., APGENCO,

APTRANSCO, TSGENCO, TSTRANSCO, KPCL, KPTCL, KSEB, NPCIL (MAPS),

Spectrum PGL, GMR Barge - Kakinada, Konaseema GPL, APGPCL Vijjeswaram Stage-I

& Stage-II), & LANCO-Kondapalli PL have been requested to kindly approach Hon’ble

CERC for obtaining further time extension for the completion of their respective pending

protection audit works.

31. GRID OPERATION

Salient Achievements

Reserve Regulatory Ancillary Services (RRAS) came in operation w.e.f. 12.04.2016.

Efforts put by KPCL to bring back three units and two lines at Sharavathy HEP

within a very short duration (almost 30 -35 days).

SRLDC had developed web based outage coordination system for requisitioning the

OCC approved outages.

KKNPP Unit-1 achieved 100 % PLF in the month of June 2016.

200 MW out of 250 MW Ananthapur Ultra Mega Power project in Andhra Pradesh

was declared on COD on 09.05.2016. NTPC was the developer of the project.

TN had absorbed record 94.65 MU of Wind generation out of total energy

consumption of 305.67 MU on 04th

July 2016.

31.1 Grid events/highlights during March 2016

Andhra Pradesh met a maximum demand of 7,680 MW on 22.03.2016 which is the

maximum till date.

Kerala met a maximum demand of 3,860 MW on 28.03.2016 which is the maximum till

date.

Puducherry met a maximum demand of 352 MW on 29.03.2016 which is the maximum

till date.

Southern Region met a maximum demand of 40,899 MW on 21.03.2016 which is the

maximum till date.


Kerala met a per day maximum energy consumption of 76.43 MU on 31.03.2016 which

is the maximum till date.

Tamil Nadu met per day maximum energy consumption of 327.02 MU on 22.03.2016

which is the maximum till date.

Puducherry met a per day maximum energy consumption of 7.45 MU on 29.03.2016


CEA vide letter dated 04.04.2016 had informed that 2nd

Unit of Vizag TPP (2x520

MW) of M/s Hinduja Power Corporation Limited of Andhra Pradesh had achieved full

load on 31.03.2016 and declared commissioned.

Yeramarus Unit I of capacity 800 MW of KPCL achieved full load on 29.03.2016.

BTPS Unit III of Capacity 700 MW of KPCL achieved full load on 01.03.2016

Singareni - U1 of TSGENCO test synchronization was carried out on 12th

Mar 2016

achieved full load on 13.03.2016.

SR I, PGCIL vide letter dated 31.03.2016 had informed that consequent to successful

completion of Trial Operation, the following assets under “ Transmission System for

connectivity for NCC Projects, Ltd. (1320 MW) have been put under Commercial

Operation w.e.f 00:00 hrs of 22nd

March 2016 :

NCC Generation Switchyard - Nellore Pooling Station 400 kV (Quad) D/C line.

2 Nos 400 kV line bays at Nellore Pooling Station for termination of NCC

Generation Switchyard-Nellore Pooling Station 400 kV(Quad) D/C line.

Transmission charges for the above assets are payable with effect from 22nd

March 2016.

2nd

Unit stringing on existing 220 kV DC/SC line from 400/220 kV S/S

Mahadevamangalam to 220 kV S/S Palamaneru in Chittur District of ckm 57.11 was

carried out and charged on 01.03.2016 by APTRANSCO.

SR II, PGCIL vide letter dated 31.03.2016 notified that the OPGW communication

links along with associated Communication Equipment and EPABX systems (hot line

speech Communication Systems for Grid Operation) as per the list enclosed at

Annexure under the project - “Fiber Optic communication System for Central Sector

Sub-Stations & Generating Stations in Southern Region” are successfully

commissioned. The above assets are put into service for commercial operation w.e.f.

31.03.2016.

400 kV Jammangudu-Kurnool D/C line was idle charged on 31st Mar 2016 by

APTRANSCO.

LILO of 400 kV Malkaram-VTPS at Suryapet was first synchronised to grid on 30th

Mar 2016 by TSTRANSCO.

220 kV D/C line from 220 KV Fabcity to 132 kV Mamidipalli SS Length of 19.972

ckm was commissioned on 31.03.2016 by TSTRANSCO.

400 kV LILO VTS-Malkaram (Ckt-I) to Suryapet SS (3.655kM) was commissioned

on 30.03.2016 by TSTRANSCO.

220/132 kV Parigi SS with 1 x 100 MVA Transformer in Rangareddy District was

commissioned on 04.03.2016 by TSTRANSCO.

220 kV SS Shapurnagar in R.R.Dis of 2 x 160 + 1 x 100 existing MVA was

augmented to a capacity of 3 x 160 MVA and was commissioned on 02.03.2016 by

TSTRANSCO.

220 kV SS Tandur in R.R.Dist 2 x 100 existing MVA was augmented to a capacity of

3 x160 MVA and commissioned on 03.03.2016 by TSTRANSCO.

220 kV SS Warangal in Warangal Dist of 1 x 130 + 2 x 100 existing MVA was

augmented to a capacity of 2 x 160 + 1 x 100 MVA and was commissioned on

06.03.2016 by TSTRANSCO.


220 kV SS Budidampadu in Khammam Dist of 2 x 100 existing MVA was

augmented capacity is 1 x 160 + 1 x 100 MVA commissioned on 10.03.2016 by

TSTRANSCO.

220 kV SS Shamshabad in R.R.Dist of 2 x 100 existing MVA was augmented to a

capacity of 3 x100 MVA and was commissioned on 12.03.2016 by TSTRANSCO.

220 kV SS Durshed in Karimnagar Dist of 2 x 160 + 1 x 100 existing MVA was

augmented to a capacity of and was 3 x 160 MVA and was commissioned on


220 kV SS Sadasivpet in Medak Dist of 2 x100 existing MVA was augmented to a

capacity of 1 x 160 + 1 x100 MVA and was commissioned on 18.03.2016 by

TSTRANSCO.

220 kV SS Nirmal in Adilabad dist of 2 x100 existing MVA was augmented to a

capacity of 3 x 100 MVA and was commissioned on 18.03.2016 by TSTRANSCO.

220 kV SS Jagitial in Karimnagar Dist of 2 x 100 existing MVA was augmented to a

capacity of 3 x 100 MVA and was commissioned on 19.03.2016 by TSTRANSCO.

220 kV SS Kalwakurthy in Mahaboobnagar dist of 1 x 160 + 2 x 100 existing MVA

was augmented to a capacity of 2 x 160 + 1 x 100 MVA and was commissioned on


220 kV SS Manuguru in Khammam dist of 1 x 160 + 2 x 100 existing MVA was

augmented to a capacity of 2 x 160 + 1 x 100 MVA and was commissioned on


31.2 Grid events/highlights during April 2016

Andhra Pradesh met a maximum demand of 7,740 MW on 28.04.2016 which is the

maximum till date.

Telangana met a maximum demand of 7,115 MW on 04.04.2016 which is the

maximum till date.

Karnataka met a maximum demand of 9,776 MW on 12.04.2016 which is the

maximum till date

Kerala met a maximum demand of 4,004 MW on 27.04.2016 which is the maximum

till date.

Tamil Nadu met a maximum demand of 15,240 MW on 29.04.2016 which is the

maximum till date.

Puducherry met a maximum demand of 370 MW on 23.04.2016 which is the

maximum till date.

Southern Region met a maximum demand of 41607 MW on 07.04.2016 which is the

maximum till date.

Andhra Pradesh met a per day maximum energy consumption of 169.15 MU on

28.04.2016 which is the maximum till date.

Telangana met a per day maximum energy consumption of 159.62 MU on 05.04.2016


Karnataka met a per day maximum energy consumption of 223.35 MU on 20.04.2016


Kerala met a per day maximum energy consumption of 80.44 MU on 29.04.2016


Tamil Nadu met per day maximum energy consumption of 345.62 MU on 29.04.2016


Puducherry met a per day maximum energy consumption of 7.83 MU on 22.04.2016


Southern Region met a per day maximum energy consumption of 962.01 MU. which

is the maximum till date


Hon’ble CERC had issued CERC (IEGC) Regulations (Fourth Amendment) 2016 on

06.04.2016.

Tamil Nadu had added 0.45 MW in windmill capacity (Private sector).

CEA vide letter dated 03.05.2016 had informed that 2nd

Unit of M/s IL & FS Tamil

Nadu Power Company Limited (ITPCL) (2 x 600 MW) in Tamil Nadu had achieved

full load on 18.04.2016 and declared commissioned.

2nd

Unit of M/s IL & FS Tamil Nadu Power Company Limited (ITPCL) (2x600 MW)

in Tamil Nadu had declared COD from 00:00 Hours of 30.04.2016.

SR I, Powergrid vide letter dated 30.04.2016 had informed that consequent to

successful completion of Trial Operation, the following assets under “Transmission

System for Ultra Mega Solar Park in Anantapur Dist, Andhra Pradesh – Part – A

(Phase –I)” have been put under Commercial Operation w.e.f 00:00 hrs of 28th

April

2016 :

1 No. 500 MVA, 400/220kV Transformer at NP Kunta Pooling Station along

with associated bays and equipment.

LILO of 400 kV Kadapa (Cuddapah) – Kolar S/C line at NP Kunta Pooling

Station.

2 Nos of 220 kV line bays at NP Kunta Pooling Station

Transmission charges for the above assets are payable with effect from 28th

April 2016.

220 kV D/C line from Jurala SS to Lower Jurala Hydro power of 22 ckm was


220 kV SS at Dichpally in Nizamabad Dist of 1 x 160 + 2 x 100 existing MVA

capacity was augmented to a capacity of 2 x 160 + 2 x 100 MVA and was


220 kV SS at Bongiri in Nalgonda Dist of 2 x 100 existing MVA capacity was

augmented to a capacity of 3 x 100 MVA and commissioned on 16.04.2016 by

TSTRANSCO.

220 kV SS at Waddekothapally in Warangal Dist of 2 x 160 + 1 x 100 MVA existing

Capacity was augmented to a capacity of 3 x 160 MVA and was commissioned on


220 kV SS at Miryalguda in Nalgonda Dist of 2 x160 + 1 x 100 existing MVA was

augmented to a capacity is of 2 x 160 + 2 x 100 MVA and was commissioned on


220 kV SS at Renigunta in Chitoor Dist of 3 x 100 MVA was augmented to a capacity

of 2 x100 + 1 x 160 MVA and was commissioned on 01.04.2016 by APTRANSCO.

220 kV SS at Chinakampally in YSR Dist of 1 x 100 MVA was augmented to a

capacity of 1 x 100 + 1 x 160 MVA and was commissioned on 02.04.2016 by

APTRANSCO.

220 kV SS at Kondapally in Krishna Dist of 3 x100 MVA Capacity was augmented to

a capacity of 2 x 100 + 1 x 160 MVA and was commissioned on 25.04.2016 by

APTRANSCO.

31.3 Grid events/highlights during May 2016

Tamil Nadu had added 12 MW in windmill capacity (Private sector).

220 kV SS at Siddipet in Medak Dist of 2 x 100 existing MVA capacity was

augmented to a capacity of 1 x 160 + 2 x 100 MVA and was commissioned

on13.05.2016 by TSTRANSCO.

220 kV SS at Minpur in Medak Dist of 1 x 160 + 2 x100 existing MVA capacity was

augmented to a capacity of 2 x 160 + 1 x 100 MVA and commissioned on 14.05.2016

by TSTRANSCO.


220 kV SS at Minpur in Nalgonda Dist of 1 x 160 + 2 x 100 MVA existing Capacity

was augmented to a capacity of 2 x 160 +1 x 100 MVA and was commissioned on


220 kV SS at Warangal in Warangal Dist of 2 x 160 + 1 x 100 MVA was augmented

to a capacity is of 3 x 160 MVA and was commissioned on 26..04.2016 by

TSTRANSCO.

31.4 Grid events/highlights during June 2016

Tamil Nadu had added 6 MW in windmill capacity (Private sector) during June 2016.

SGPL vide letter dated 30.05.2016 informed that Unit I of Sembcorp Gayatri Power Ltd

(SGPL) 660 MW was synchronized with Grid at 19:26:52 Hrs on 26th

May 2016.

220 kV RTPP Chinnakampally 3rd

& 4th

circuit in YSR Dist of 121ckm was

commissioned on 16.06.2016 by APTRANSCO.

2nd

Circuit from 400 kV Gajwel to loc No 34 of 132 kV line from Gajwel to Thumki

Bolarum line of 10 ckm was commissioned on 08.06.2016 by TSTRANSCO.

220 kV SS at Budidampadu in Kammam Dist(9hrs Agricultural) of 1 x 100+1x160

existing MVA capacity was augmented to a capacity of 2 x160 MVA and


220 kV SS at Kondamallepally in Nalgonda Dist of 3 x 100 MVA existing Capacity

was augmented to a capacity of 4 x 100 MVA and was commissioned on 13.06.2016 by

TSTRANSCO.

220 kV SS at Jurala in Mehaboobnagar Dist (9 hrs Agricultural) of 2 x100 MVA

existing Capacity was augmented to a capacity is of 3 x 100 MVA and was


220 kV SS at Moulali in Ranga Reddy Dist of 2 x 80 + 1 x 50 MVA existing Capacity

was augmented to a capacity of 3 x 80 + 1 x 50 MVA and was commissioned on


125 MVAR Vijayawada Bus reactor – III was charged by PGCIL on 19.06.2016.

NP Kunta ICT – II & III (400/220 kV, 500 MVA each) charged by PGCIL on

02.07.2016 & 11.07.2016.

Udumalpet – Pallakad SPS implemented by effect from 20.06.2016 by KSEBL.

Jammalamadugu – Kurnool commissioned on 29.06.2016 by APTRANSCO.

SR I, Power grid vide letter dated 11.07.2016 informed that consequent to successful

completion of Trial Operation, the following assets under “Transmission System for

Ultra Mega Solar Park in Anantapur Dist, Andhra Pradesh – Part – A (Phase –I)” have

been put under Commercial Operation w.e.f 00:00 hrs of 11th

July 2016 :

2 No. 500 MVA, 400/220kV Transformer at NP Kunta Pooling Station along

with associated bays and equipment.

1 no. 125 MVAR 420kV Bus Reactor along with associated bays and

equipment.

SR II, Power grid vide letter dated 22.06.2016 informed that consequent to successful

completion of Trial Operation, the following asset under transmission system

associated with “System strengthening – XX in Southern Regional Grid” have been put

under Commercial operation with effect from 00:00 hours of 22nd

June 2016:

1 X 500 MVA, 400/220/33kV ICT at Malekuttaiayur Substation along with

associated bays and equipments.

Transmission charges for the above assets are payable with effect from 22nd

June 2016.

31.5 Installation of Shunt Capacitors

Progress of installation of capacitors by the constituents during the year


2016-17 is furnished in the Table below:

(Figures in MVAR)

State Requirement

for 2016-17

Installed during the year 2016-

17

Andhra Pradesh 239.8 0

Telangana 115.20 0

Karnataka 56.31 0

Kerala 10.00 0

Tamil Nadu 51.00 0

Puducherry 16.80 0

31.6 Demand Variation (Peak Vs Off-peak)

Issue regarding large variation between minimum and maximum demands has been under

the consideration of TCC/SRPC. The issue is also being discussed in the monthly

Meetings of OCC. Following was observed with regard to the period from March 2016 to

June 2016:

Descripti

on

Minimum to Maximum Demand Variation %

Andhra

Pradesh Telangana Karnataka Kerala Tamil Nadu Puducherry

Southern

Region

March 2016

Highest 28.75 22.58 19.41 34.09 27.33 32.66 26.75

Date (Day) 29.03.2016

(Tuesday)

19.03.2016

(Saturday)

13.03.2016

(Sunday)

27.03.201

6 (Sunday)

14.03.2016(

Monday)

03.03.2016

(Thursday)

29.03.2016

(Tuesday)

Lowest 14.29 8.89 10.53 25.18 10.16 14.90 16.32

Date

(Day)

27.03.2016

(Sunday)

12.03.2016

(Saturday)

18.03.2016

(Friday)

11.03.201

6 (Friday)

27.03.2016

(Sunday)

13.03.2016

(Sunday)

03.03.2016

(Thursday)

Average 19.86 15.12 15.66 30.71 18.59 24.83 22.79

April 2016

Highest 31.81 24.23 22.73 32.87 23.37 35.43 14.14

Date

(Day)

08.04.2016

(Friday)

17.04.2016

(Sunday)

09.04.2016

(Saturday)

15.04.2016

(Friday)

11.04.2016(

Monday)

11.04.2016

(Monday)

11.04.2016

(Monday)

Lowest 9.86 11.44 12.89 24.90 9.16 13.63 5.58

Date

(Day)

06.04.2016

(Wednesday)

24.04.2016

(Sunday)

14.04.2016

(Thursday)

28.04.2016

(Thursday)

03.04.2016(

Sunday)

14.04.2016

(Thursday)

08.04.2016

(Friday)

Average 18.83 16.77 16.66 28.55 14.54 22.54 10.61

May 2016

Highest 31.67 67.12 42.34 42.80 37.65 49.70 28.43

Date

(Day)

12.05.2016

(Thursday)

06.05.2016

(Friday)

20.05.2016

(Friday)

20.05.2016

(Friday)

17.05.2016

(Tuesday)

16.05.2016

(Monday)

20.05.2016

(Friday))

Lowest 14.85 14.82 16.83 24.33 9.24 13.25 12.51

Date

(Day)

17.05.2016

(Tuesday)

07.05.2016

(Thursday)

17.05.2016

(Tuesday)

14.05.2016

(Saturday)

01.05.2016(

Sunday)

08.05.2016

(Sunday)

10.05.2016

(Tuesday)

Average 22.34 25.87 22.45 32.47 19.45 25.14 16.60

June 2016

Highest 29.96 34.90 36.82 47.26 30.31 34.63 34.78

Date 02.06.2016 07.06.2016 03.06.2016 30.06.2016 24.06.2016 24.06.2016 30.06.2016


(Day) (Thursday) (Tuesday) (Friday) (Thursday) (Friday) (Friday) (Thursday)

Lowest 14.69 13.75 20.53 28.65 12.31 17.72 14.48

Date

(Day)

21.06.2016

(Tuesday)

12.06.2016

(Sunday)

05.06.2016

(Sunday)

10.06.2016

(Friday)

05.06.2016

(Sunday)

05.06.2016

(Sunday)

19.06.2016

(Sunday)

Average 19.76 22.72 27.48 37.11 20.97 26.76 21.18

Note: Highest &lowest figures for the month have been computed based on the daily values.

31.7 Frequency of Operation of Southern Grid

Frequency of operation of the Southern Grid for the period under review is furnished

below please:

Month

Percentage of time when frequency (Hz) was

Month

Avg.

freq.

Less

than

49.5

49.5

to

49.7

49.7

to

49.9

49.9

to

50.0

50.0

to

50.05

50.05

to

50.20

More

than

50.20

Within

IEGC

range

49.9 to

50.05

March 2016 0.00 0.00 10.79 42.66 26.84 19.56 0.15 69.50 49.99

April 2016 0.00 0.07 14.21 43.89 25.63 16.11 0.09 69.52 49.98

May 2016 0.00 0.03 7.51 39.28 30.67 22.20 0.31 69.95 50.00

June 2016 0.00 0.04 8.31 43.35 29.93 18.34 0.03 73.27 49.99

During the period under review, caution / violation messages (Annexure- XXIV) were

issued to the constituents by SRLDC. Matter regarding overdrawal at low frequency by

some constituents is being regularly deliberated in the OCC forum. Utilities are requested

to kindly adhere to Regulations in this regard.

31.8 Reasons for demand -supply gap and its variation:

31.8.1 In 4th

NPC meeting held on 10.12.2015 (MoM dated 1.1.2016) the following was noted:

Reason for demand-supply gap needed to be clearly mentioned to reflect true picture

of power supply position in different states and also to invite attention of various

agencies including policy makers to the specific problem areas in the power sector

for suitable solution. It was requested to RPCs to advise the states in their respective

regions to intimate broad break-up of demand-supply gap due to various reasons, or

at least, the main reason(s) for demand-supply gap in each month. It was suggested

that this matter could be discussed in the OCC forum of RPCs on regular basis and

the reasons for demand-supply gap ascertained from the States therein and

communicated to CEA.

RPCs agreed to take action accordingly and furnish above information to CEA along

with the power supply position related data every month.

31.8.2 In the 29th

SRPC, SRPC had informed that the reasons for demand-supply gap had been

sought to reflect true power supply position in the states. Only Kerala is furnishing the

information, other states/UT are kindly requested to furnish the details along with PSP


data.

32. THOROUGH REVIEW OF ALL THE DRAWAL POINTS OF STATES FOR

DRAWAL COMPUTATIONS

SRPC vide letter dated 30.10.2015 had suggested a methodology for reviewing the Touch

Points for drawl computations. Issue was further discussed in the 31st CCM wherein the

following was noted:

SRPC and SRLDC would be reviewing node points for installation of SEMs as per

CEA Metering Regulations and would post the details of location ID and formulas on

SRPC website. The same was posted in the SRPC website.

The comments/feedback of the constituents were to be sent to SRPC Secretariat within

two/three weeks’ time to finalize the methodology.

33. TPCIL REQUEST TO EXEMPT DEVIATION CHARGES

33.1 TPCIL vide letter dated 07.01.2016 had requested for to consider the event of 30.12.215

as “force majeure” during CTU system outage (ISTS) and revise the deviation account for

the week 28-Dec-15 to 03-Jan-16.

33.2 The issue was deliberated in the 31st CCM wherein it was noted a Working Group of NPC

was meeting shortly to recommend the methodology for ‘Treatment of Bilateral short term

and collective transaction in case of grid disturbances’.

33.3 In the 5th

NPC meeting held on 08.04.2016 it was noted that the working group would meet

again to arrive at consensus on the methodology. Finalized methodology would be

communicated put up to NPC in the next meeting for approval.

34. SCHEDULING OF NTPC RAMAGUNDAM SOLAR POWER PLANT (10 MW)

34.1 A Special Meeting was held on 17th November 2015, to facilitate scheduling by SRLDC

and identify certain prerequisite criteria to be ensured by NTPC. The issue is being

regularly followed up in the OCC Meetings. NTPC to ensure the technical/regulatory

requirement to enable scheduling by SRLDC.

35. GRID STUDY COMMITTEE (TASK- 2) AUDIT PROGRESS DETAILS

35.1 As per the MoP order dated 16.07.2014, M/s Tractebel Engineering (TE) has been

appointed as the Consultant to conduct the study/ analysis of National Grid. The terms of

reference of the Consultant are as follows:

a) To Review the status of implementation of the recommendations of the Enquiry

Committee (Task-1).

b) Carrying out actual protection audit check for 10% (76 nos.) of 762 substations across

the country to address the gaps, in consultation and collaboration with states and all

stakeholders as per present and future requirements (Task-2).


Task-1 for SR-Constituents was completed by the first week of September, 2015. The draft

report on Task-1 prepared by the Consultant was discussed in the third Grid Study

Committee (GSC) meeting held on 18th

November, 2015. Subsequently, the feedback of

the SR-Constituents was furnished to the Consultant by the last week of November, 2015.

Under Task-2, 15 Stations have been identified from SR for protection audit-check by the

Consultant. Various inputs (relating to relay settings, protection parameters, etc.) sought by

the Consultant in this regard have been collected from respective SR-Constituents, and

furnished to the Consultant. Based on the data furnished, Consultant is to provide a set of

recommended settings covering various relays for each of the 15 Stations, and to carry out

physical protection audit of the same. The audit activities proposed to be carried out by the

Consultant during audit-period would cover verification of the status of each CBs, VTs and

CTs and various interlocks in the substation, verification of the relay settings implemented,

checking the availability of Auxiliary supply, etc.

In this regard, protection-audit of all 15 stations from SR has been completed as given

below:

Sl.No Name of the Station Period of Audit

1 Hosur SS of PGCIL (SR-II) 9-11 December, 2015

2 Gazuwaka SS of PGCIL (SR-I) 28-30 December, 2015

3 Alamathy SS of TANTRANSCO 4-6 January, 2016

4 Tirunelveli SS pf PGCIL (SR-II) 8th,

,9th

and 11th

January, 2016

5 Edamon SS of KSEB 18-20 January, 2016

6 NLC TPS-II Station 8–10 February, 2016

7 Nelamangala SS of KPTCL 8–10 February, 2016

8 Gooty SS of PGCIL (SR-I) 12th

, 13th

and 15th

February,

2016

9 Kurnool SS of APTRANSCO 16–18 February, 2016

10 Ramagundam STPS of NTPC 18-20 February, 2016

11 Kothagudem TPS of TSGENCO 14-16 March, 2016

12 Kaiga APS of NPCIL 4-6 April, 2016

13 Guttur SS of KPTCL 4-6 May, 2016

14 Raichur TPS of KPCL 8-10 June, 2016

15 Nagjheri HPS of KPCL 14-16 July, 2016

35.2 The draft report on Task-2 by the Consultant is awaited. It may please be noted in this

regard that based on their audit, the Consultant has given certain general observations w.r.t.

each station, and the final set of recommendations will be provided by M/s Tractebel

Engineering in their final report on Task-2.

36. IMPLEMENTATION OF PROTECTION SUITE / PROTECTION MANAGEMENT

SYSTEM (PMS) FOR SOUTHERN REGION

In the 26th

SRPC meeting held on 20th

December, 2014 at Visakhapatnam, SRPC had


approved the proposal to procure Protection Suite (Protection Management System) that

comprises Web based management software and protection setting calculation tool through

PSDF funding. In this regard, steps have been initiated to procure Protection Suite through

PSDF funding. 35 number of licenses for Southern Region utilities are under the scope.

After obtaining approval for PSDF funding, tendering process for executing Protection

Suite would be initiated. For evaluating the technical and financial bids that would be

received, a Committee comprising members from SR- Constituents would later be

constituted with approval from Chairperson, SRPC. Presently, the proposal for PSDF

funding for PMS is under evaluation by the Appraisal Committee of PSDF.

37. OVER VOLTAGE RELAY (OVR) GRADINGS FOR 400 KV TRANSMISSION

LINES OF THE SOUTHERN REGION

37.1 In the past one year, a number of new 400 kV transmission lines have been added to SR

Grid in addition to reconfiguration (including LILO) works of the existing 400 kV

transmission lines. In this regard, a comprehensive exercise for OVR grading 400 kV

transmission lines of SR (existing as on March, 2016) has been carried out, and revised

OVR Gradings proposed to be adopted for these lines (along with study results) had been

circulated to all Constituents for any modifications/ omissions/ comments vide SRPC letter

dated 24.03.2016.

37.2 Final OVR gradings to be adopted for 400 kV lines after incorporating Constituents'

comments have been issued for implementation vide SRPC letter dated 18.04.2014. OVR

gradings have also been kept in SRPC website for easy reference.

38. PROTECTION SYSTEM ANALYSIS GROUP (PSAG-15) MEETING HELD AT

NTPL, TUTICORIN

As decided in the 52nd

Meeting of the Protection Coordination Sub-Committee (PCSC-52)

held on 30.03.2016, a team of PSAG-15 comprising Officials from SRPC, SRLDC, PGCIL

(SRTS-II), KPTCL, and TANTRANSCO visited NTPL, Tuticorin on 12th

April, 2016 to

make an in-depth analysis of the circumstances that led to the GD’s on 14th

and 15th

March,

2016, and suggest suitable actionable measures to avoid recurrence of such incidents in

future.

The Committee gave the following recommendations to NTPL for implementation:

To examine the feasibility of using relays of different make for Main-I and Main-II

line protection on all the lines emanating from NTPL, and implement accordingly.

To consider mutual compensation factors for distance protection at the earliest to avoid

mal-operations associated with coupling phenomenon.

To revise Pole Discrepancy Relay timing from the present 2.5 sec to 1.5 sec.

To perform CRM/ DCRM test on all breakers, and take appropriate steps to ensure

their healthiness.

To take concrete steps to commission the second set of battery bank and battery

charger at the earliest for reliable PLCC communication.

To examine the feasibility of providing line differential protection on all 400 kV lines

emanating from NTPL after it is gets connected by the PGCIL’s fibre optic back-bone.

The Distance Protection Zone-settings adopted by NTPL at their end for NTPL-

TTNPS and NTPL-CEPL lines have been considered with a view to verify whether


they are in line with Ramakrishna Committee guidelines. In this regard, the existing

Zone-settings, and new Zone-settings calculated as per Ramakrishna Committee

general guidelines have been made available to NTPL for adoption after suitable

examination.

39. SPECIAL MEETING ON ISSUES RELATING TO RECENT GRID

DISTURBANCES IN GAJUWAKA – SIMHADRI - KALPAKA CORRIDOR HELD

ON 04TH

MAY, 2016 AT SRPC, BENGALURU

A Special Meeting was held on 4th

May, 2016 at SRPC Secretariat, Bengaluru to deliberate

on the issues/ factors that led to recent disturbances in Gajuwaka – Simhadri - Kalpaka

corridor which resulted in trippings of various 400 kV interconnected lines, and finally

culminated in Grid Disturbances at Gajuwaka SS (PGCIL-SRTS1), Vizag SS

(APTRANSCO), and Kalpaka SS (APTRANSCO) during 24-26 April, 2016.

The following actionable measures/steps had been finalised in the Meeting:

Line patrolling protocol & maintenance procedures to be adhered.

Insulator replacement to be carried out up to the firmed up distance.

Hot-line/ Cold-line washing of Insulators & attending to hot-spots.

Silicon Insulator Coatings.

Reducing emissions during commissioning tests of new generating units.

Ensuring supply reliability to Railway Traction network of North Coastal Andhra

Pradesh.

In addition, following protection-specific recommendations have also been given:

Provision of Line differential Protection on all 400 kV transmission lines

interconnecting Gajuwaka SS (PGCIL-STRS1), Simhadri STPP (NTPC), Kalpaka SS

(APTRANSCO), and Hinduja TPS (HNPCL).

Ensuring healthiness of PLCC & Carrier-aided communication.

Provision of GPS/ Time synchronization facility in all 220 kV & above substations/

generation switchyards in Gajuwaka – Simhadri – Kalpaka corridor.

Furnishing of tripping details in compliance of Regulation 5.2 (r) of IEGC.

40. SPECIAL MEETING ON PENDING PROTECTION ISSUES OF M/S KPCL HELD

ON 03.06.2016 AT SRPC, BENGALURU

A Special Meeting was held on 03rd

June 2016 in SRPC Secretariat, Bengaluru to deliberate on

pending protection issues of M/s KPCL. Certain issues were observed to be occurring

recurrently at their major generating stations such as 400/ 220 kV Raichur TPS and 220 kV

Nagjheri PH.

As regards the recurring grid disturbances at Nagjheri PH, specific actionable measures/

recommendations w.r.t. the following issues have been proposed:

Line maintenance issues

SPS Modification at Nagjheri PH

Revising GT back-up protection settings appropriately at Nagjheri PH

Putting 220 kV Nagjheri-Kodasalli lines into service

KPTCL was further recommended to actively undertake re-conductoring (with HTLS type

of conductors) of 220 kV Nagjheri – Ambewadi D/C line, 220 kV Ambewadi – Narendra


D/C line, 220 kV Nagjheri – Kodasally D/C line, 220 kV Kaiga-Kodasally S/C line and

furnish an action plan for implementing the same.

KPCL was also recommended to undertake the following remedial measures to avoid breaker

flashovers:

Replacing all porcelain insulators with composite insulators

Carrying out hot-line water washing of all insulators on regular basis.

Applying Room Temperature Vulcanizing (RTV) Silicone high voltage insulator coatings

to all bus-connected ceramic insulators of equipment like CT, PT, CB, Isolators etc.

To take steps to provide dedicated breaker flashover protection to all breakers at Raichur

TPS at the earliest.

Auto-Reclosure scheme implementation on all 220 kV lines emanating from Kali Complex

Line differential protection for 400 kV Raichur-Raichur TPS line-1&2 and 400 kV Raichur-

YTPS and in future lines from Bellary pooling station to nearby generating TPS as frequent

over-reach is being observed with distance protection relays.

D.R and station event logger to be triggered with operation of Main and Back-up protections

of transmission line/ generator /bus-bar protection with proper time synchronization for

performing proper analysis.

Integrity test for Station earth mats in KPCL stations

41. REVIEW OF ISLANDING SCHEMES OF SOUTHERN REGION

There are four Islanding Schemes functional in the Southern Region. However, since their

implementation in 2014, number of network changes (additions/ deletions/ reconfigurations

of transmission elements & generators) have taken place in the grid.

In this regard, a comprehensive exercise of reviewing existing Islanding Schemes

incorporating adverted changes has been carried out. Suitable inputs based on extensive

consultation with the concerned Constituents have been duly factored into in the process.

Document containing the reviewed Islanding Schemes along with the relevant schematics

and necessary system studies has been kept on SRPC website for easy reference.

Concerned Constituents as given below have been requested vide SRPC letter dated

18.07.2016 to kindly initiate steps to implement the reviewed Islanding Schemes by

appropriately configuring the frequency settings of the transmission lines/ ICT’s/

generators as brought out in the document so that they get tripped at the Islanding

frequency of 47.9 Hz.

Name of the

Islanding

Scheme (IS)

Constituents responsible for configuring frequency settings

Hyderabad IS

TSTRANSCO, PGCIL (SRTS-I), NTPC (Ramagundam)

Chennai IS

TANTRANSCO, TANGEDCO, PGCIL (SRTS-II) Neyveli IS

TANTRANSCO, TANGEDCO, NLC, PGCIL (SRTS-II), KSEB

Kudankulam IS

TANTRANSCO, TANGEDCO, PGCIL (SRTS-II), KSEB, CEPL,

STERLITE, IBPTL

(TANTRANSCO is requested to kindly intimate CEPL, STERLITE

and IBPTL in this regard)


TSTRANSCO, TANTRANSCO and KSEBL, in their capacity as STU of their respective

states, have also been requested to ensure that all island-participating generators from

Telangana, Tamil Nadu & Kerala respectively are capable of FGMO/ RGMO and House-

load operation.

42. PROTECTION SYSTEM ANALYSIS GROUP (PSAG-16) MEETING HELD AT

AMBEWADI SS HELD ON 18.07.2016

PSAG-16 Meeting was held at Ambewadi SS on 18.07.2016. The Minutes have been

uploaded in the SRPC website. KPCL/KPTCL are requested to kindly initiate action on the

recommendations.

43. PENDING IMPLEMENTATION OF RECOMMENDATIONS OF PROTECTION

COORDINATION SUB-COMMITTEE (PCSC) OF SRPC

The recommendations given in various PCSC meetings to SR-Constituents have been

regularly sent to respective Constituents for implementation. Concerned constituents are

requested to kindly comply with the Recommendations.

44. STUDY PROGRAMME ON THE INTEGRATION OF RENEWABLE ENERGY

RESOURCES INTO THE GRID

The proposal had been discussed in the Techno-Economic sub group of PSDF on

27.05.2016. Modifications based on the observations had been communicated to the sub

group on 13.07.2016.

45. IEGC, FOURTH AMENDMENT REGULATIONS 2016- TECHNICAL MINIMUM

OF GENERATORS / COMPENSATION PROCEDURE FOR SHR & AEC

4th

Amendment to IEGC had been brought out by Hon’ble CERC in which Technical

Minimum of 55 % of MCR/IC and compensation for SHR / AEC for low unit loading had

been envisaged. Compensation Procedure (SRPC) and the Operating Procedure for RSD

(NLDC) had been deliberated in OCC/CC/Special meeting (30.05.2016) / VC (20.06.2016).

Compensation Procedure has been finalized by SRPC Secretariat and uploaded in the

website and the same would be fine tuned with feedback from other RPCs. NLDC is in the

process of finalizing the Operating Procedure for RSD.

46. SCHEDULING/OPERATIONAL ISSUES IN RESPECT OF NP KUNTA UMSPPS – 1

46.1 A Meeting on scheduling/operational issues in respect of NP Kunta Ultra Mega Solar

Power Project Stage – 1 (250 MW) at Ananthapur in Andhra Pradesh was held at SRPC,

Bengaluru on 02.05.2016. (MoM is available at SRPC web site).


46.2 APSLDC had given consent and is scheduling the NP Kunta UMSPPS-1 as the installed

capacity criteria of IEGC to be scheduled by SRLDC had not been met. Other actionable

points need to be ensured (as enumerated in the MoM) by the concerned entities to enable

smooth transfer of scheduling responsibility to SRLDC as and when it takes place.

47. COMMERCIAL COMMITTEE ISSUES

The following issues were discussed in the 31st CC meeting and brought to the attention of

SRPC/TCC.

Assessment of Metering requirement

CTU, STUs and generators were to furnish assessment of SEM requirement for the

next one-year period regularly. The Assessment of Metering requirement was

discussed in the 31st CCM wherein the following was noted:

CC forum had requested all Regional entities to furnish the SEM requirements to

the Committee. Sufficient spare SEMs, DCDs and accessories are also to be

factored in the projected requirement.

Issuing Reactive Energy Accounts –Erratic readings by SEM

SRLDC had informed that erratic readings in high voltage cumulative readings (used

for reactive account) were observed from December 2015 to May 2016. Abnormal

readings were detected in SEMs located at Kayathar, Thiruvalam, Karaikudi and

Kochi.

CC forum had agreed to issue the reactive energy to issue the reactive energy accounts

by eliminating the erratic reading making H register value as Zero (0) for the week.

Calibration and testing of SEMs in the region

As per CEA metering regulations 2006, 18.1(a), interface meters are to be tested at

least once in 5 years. In this regard, the owners of SEMs are requested to initiate

necessary action. All the utilities were requested to furnish the database, regarding the

previous date of calibration and tests carried out, to SRLDC. PGCIL and other

utilities were requested to initiate the process of Calibration of Testing of Meters in a

phased manner to meet the regulatory requirement.

Non Availability of SEMs as per CEA metering regulations

A consolidated list of locations where SEMs were not available as per CEA Metering

Regulations is given below:

S.NO Element Non availability of

SEM

To be installed by

1 MAPS: GTs (HV side) Stand By CTU/MAPS

2 Vallur : 400kV NCTPS lines

1 & 2

Check NCTPS/CTU

3 400kV Mysore-Nelamangala

Lines 1&2

At Mysore CTU

4 400kV Hoody-Kolar Lines

1&2

Hoody KPTCL


5 400kV UPCL-Hassan line

1&2

UPCL CTU/KPTCL/UPCL

6 400kV Nelamangala-Hassan

line

Nelamangala CTU/KPTCL

7 400kV Talaguppa-Hassan

Line

Talaguppa KPTCL

8 400kV Guttur-Hiriyur lines

1&2

Both Guttur and

Hiriyur

CTU / KPTCL

9 Bonakaalu-Chillakallu lines

1&2

Bonakaalu end of 132

kV Line

TS

10 400kV Hiriyur-BTPS lines

1&2

Both Hiriyur and BTPS KPTCL

SRTS II, PGCIL had stated that irrespective of the ownership of the bay and line, the

owner of the sub-station shall install the SEM at their stations.

Forum requested that the concerned utilities (SRTS II / PGCIL, KPTCL, UPCL, TN)

to install the SEMs in the above locations immediately.

Approval of Metering Scheme for new Generation and Transmission scheme

In the 22nd

and 28th

CCM, it was decided that all the regional entities, new

Generating Stations and CTU have to submit the Metering Scheme for the new

projects and Substations to CCM forum for the approval at least one year in advance.

It was noted that metering scheme does not only imply installation of SEMs, but also

includes finalising the accounting philosophy. Also, since transmission projects

come up in a planned manner, SRLDC suggested that it should not be a problem for

PGCIL to estimate and submit the SEM assessment in advance.

All constituents were requested to submit the Metering scheme to SRLDC / SRPC

with the requisite documents to get it approved in the CCM of SRPC.

MEPL Metering Scheme Approval

The Commercial committee approved the metering scheme as proposed by MEPL.

Submission of C1-C4 formats for New Element Charging

As per the new NLDC procedure, complete C1-C4 format need to be submitted,

soon after successful trial operation, to declare COD.

Failure to intimate new Bay charging details to SRLDC

All the entities were requested to inform the SLDC/SRLDC and the other end utility

(if applicable) regarding the bay changing works etc., that affect commercial

accounting issues to have effective and correct accounting system.

Non-compliance/Pending Issues as per 2nd

Meeting of Nodal Officers for SEM Data

Coordination

It was noted that most of the SEM issues raised are yet to be resolved

48. REVIVAL OF UNITS AT SHARAVATHI GENERATING STATION


Updated status on revival of units / other facilities is given in the table below:

Unit/Line Status

Unit-7, 6, 8, 9 & 10 revived on 23.03.2016, 29.03.2016, 03.04.2016, 28.06.2016 and

08.07.2016 respectively

Unit-3, 4 & 5 July 2016

Unit-1 & 2 August 2016

Shimoga Line-3, 4 and Talaguppa Line - 2 restored on 21.03.2016, 26.03.2016 and

27.06.2016

Sharavathy Sirsi-1 & 2 July 2016

Shimoga 1, Talaguppa-3, Talaguppa-1 &

Balligave

August 2016

49. REFERENCE FROM MNRE REGARDING COMPILATION OF DATA FOR

MEETING RENEWABLE ENERGY TARGETS OF 175 GW BY 2020

MNRE/ MoP /CEA vide letters dated 02.03.2016, 22.03.2016 and 29.03.2016

respectively had communicated regarding compilation of data for meeting renewable

energy targets of 175 GW by 2020. Concerned State Utilities/Generating companies are

requested to furnish the data suggested by MNRE. SLDCs are also requested to

coordinate and furnish the data for the generators in their control area.

50. PROVIDING INFORMATION REGARDING COMMISSIONING AND

DECLARATION OF COD OF POWER GENERATING UNITS

CEA letter dated 31.05.2016 (Annexure-XXV ) had requested that all related information

for date of commissioning and commercial operating of units may kindly be informed to

OPM Division of CEA so as to update CEA reporting system / database. Information may

be arranged to be sent to the following e-mail ids.

[email protected], [email protected], [email protected] &

[email protected]

51. FORECASTING, SCHEDULING AND DEVIATION SETTLEMENT OF WIND

AND SOLAR GENERATING STATIONS AT THE STATE LEVEL

Hon’ble CERC in its Order dt.13.07.2016 in respect of Petition No. 91/MP/2014 & I.A.

No. 20/2014 had noted the following:

‘….38. The Forum of Regulators (FoR) has evolved a „Model Regulations on

Forecasting, Scheduling and Deviation Settlement of Wind and Solar Generating Stations

at the State level‟ (Model Regulations), which outlines a model for operational and

commercial management of variable RE sources. The objective of above Model

Regulations is to facilitate large-scale grid integration of solar and wind generating

stations while maintaining grid stability and security as envisaged under the Grid Code,

through forecasting, scheduling and commercial mechanism for deviation settlement of

these generators. The Model Regulations have been proposed to be applicable to all wind

mailto:[email protected]




and solar generators which are connected to the State grid, including those connected via

pooling stations, and selling power within or outside the State………..

……………………

40. We are of the view that the Model Regulations on Forecasting, Scheduling and

Deviation Settlement of Wind and Solar Generating Stations at the State level have been

evolved to address the issues of forecasting, scheduling and settlement of over/under

drawl of power arising out of over /under injection of power from renewable sources

which are connected to the State grid and selling power within or outside the State. The

State Electricity Regulatory Commissions are advised to implement these regulations in

letter and spirit to ensure grid integration of huge renewable resources as envisaged to be

connected to grid in next 5 to 7 years.’

52. SKILL PLAN FOR POWER SECTOR BASED ON THE ASSESSED SKILL GAP IN

THE SECTOR

CEA vide letter dated 04.07.2016 (Annexure-XXVI) had informed that a Meeting on

Skill Plan for Power Sector was conducted in MoP on 01.07.2016. The main emphasis

was on the following:

The Report has to be submitted by PSSC by 10th

of July, 2016 clearly indicating the

needs of training and skill gaps in power sector.

All the data captured, analysis made and other facts in the draft skill plan have to be

validated by CEA before finalization of the Report.

Further to this, MoP vide their letter No. 7/5/2015-T&R dated 01-07-2016 had sought

information in the matter. Based on the letter of MoP a proforma has been prepared. It is

requested that the relevant information pertaining to the sector/sub-sector as per the proforma

may please be arranged to be sent to CEA at mail id [email protected].

53. REIMBURSEMENT OF SRPC EXPENDITURE

Statement showing net amount payable by Member Utilities of SRPC for the year 2016 -17,

after adjustment of surplus/deficit for the previous period is furnished in Annexure-XXVII.

Members are kindly requested to ensure payment.

54. DATE & VENUE OF THE NEXT SRPC MEETING

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