baart sarkar government of india kond`iya ivavut p`aiqakrnawrpc.gov.in/occ/452occ_minute.pdf ·...

Baart sarkarGovernment of India kond`Iya ivaVut p`aiQakrNa

Central Electricity Authority piScama xao~Iya ivaVut saimait

Western Regional Power Committee ef -3, emaAayaDIsaI xao~, AMQaorI (pUva-), mauMba[- - 400 093

F-3, MIDC Area, Andheri (East), Mumbai - 400 093

Aa[- esa Aao : 9001-2008

ISO: 9001-2008

dUrBaaYa Phone: 022- 28221681; 28200194; 28200195;28200196 fO@sa Fax : 022 – 28370193 Website: www.wrpc.nic.in E-mail : [email protected]

saM: Paxaoivasa/p`caa. / Pa`sasa-kaya-vaR%t /2013-14/ 10713 idnaaMk 24.10.2013 saovaa maoM, ivaYaya:- p.xao.iva.saimait, mauMba[- kI Pa`caalana evaM samanvaya saimait kI 452 vaIM baOzk ka

kaya-vaR%t.

mahaodya,

piMScama xao~Iya ivaVut saimait, mauMba[- kI Pa`caalana evaM samanvaya saimait kI idnaaMk 17.10.2013 kao DAKC, AIROLI (RELIANCE) MUMBAI maoMoM Aayaaoijat 452 vaIM baOzk ka kaya-vaR%t AapkI saUcanaaqa- saMlagna hO .

Qanyavaad.

BavadIya,

saMlagna : ]Parao@tanausaar Sd/-

ema ema Qakato AQaIxaNa AiBayaMta (p`caalana)

MINUTES OF 452nd MEETING OF OPERATION & COORDINATION SUB-COMMITTEE OF WRPC HELD ON 17th OCTOBER 2013 AT DAKC,

RELIANCE, MUMBAI

The 452ND meeting of Operation & Co-ordination Sub-Committee of WRPC was held on 17th October 2013 at DAKC, Airoli, Mumbai. The list of participants is enclosed at Annex-I.

Sh. V.K Reddy, President (Operations) of Reliance Power welcomed the Member

Secretary, WRPC and all the participants of OCC and expressed that it was an honour

for Reliance Power to host this apex meeting at Dhirubhai Ambani Knowledge City.

He said that Reliance group has approximately 3000 MW operational capacity today,

which comprises of Coal based, gas based, solar and wind powered stations all over

the country. The Dahanu Thermal Power Station of Reliance is a benchmark for

operational performance which has been operating continuously at 100% PLF for

years together. He said that with the commissioning of the first 660 MW unit of Sasan

UMPP, Reliance has become part of the national grid and will contribute proactively to

the activities of WRPC and the betterment of the grid.

Shri S D Taksande, Member Secretary, WRPC extended warm welcome to the

members and participants of the 452nd OCCM. He expressed his gratitude to Shri V K

Reddy, President(Operation), Reliance Power Sasan for willingly agreeing to host

452nd OCCM at DAKC, Mumbai. He specially welcomed Central Railways

representative who are attending OCC forum of WRPC for the first time.

He informed that 24th WRPC meeting held on 08th & 09th October at GOA and the

important decisions taken & subsequently their implementation is prime focus of 452nd

OCC meeting. He intimated that out of various islanding schemes Kawas islanding

scheme has been put into operation and Kakrapar, TAPS 3&4 islanding scheme are in

discussion stages. He further intimated that allocation to Bangadesh of 200 MW have

been commenced. He stated that important issues would be taken up for discussion

before resorting to regular agenda items. Thereafter following importantissues were

taken up for discussion.

Minutes of 452nd OCC meeting held on 17th October 2013

A. ABRUPT CHANGE IN HVDC FLOW IN MUNDRA-MOHENDERGARH HVDC LINES.

CE, SLDC Gujarat intimated vide letter No. GujSLDC/CE/MIS/APL-HVDC flow

rise/141013 dated 14.10.13 that it was observed on 11.10.2013 at 08:02 Hrs that APL,

Mundra - Mohindergarh HVDC flow started increasing suddenly above 1500 MW.

The details of power flow on HVDC lines were as under:

Time (Hours) HVDC flow

08:02 Hrs 1501 MW

08:05 Hrs 1760 MW

08:08 Hrs 2121 MW

08:11 Hrs 1642 MW

08:15 Hrs 1500 MW This is very serious phenomenon and may lead to grid disturbance. SLDC, GETCO

wrote to M/s. APL requesting them to clarify the matter immediately and submit the

occurrence report. Also, they were directed not to vary flow on HVDC without consent

of SLDC- Gujarat as they are operating under control of area of SLDC-Gujarat.

NLDC asked M/s. APL to forward the settings of the Frequency Controller only after

Frequency Controller has acted upon and intimated promptly by Gujarat SLDC, this

clearly indicates that M/s. APL have put it in service on their own and have failed to

intimate even NLDC.

Such a huge and abrupt change in parameters would indeed have a great impact on

the system security, stability and reliability. Though M/s. APL is under the control area

of Gujarat SLDC, neither M/s. APL nor WRLDC have intimated about such an

important controller being put into service.

Member Secretary, WRPC requested APL to explain the case.

APL representative made a brief presentation :

There is a frequency controller at HVDC which acts in the following conditions :

1. When the Mundra Bus # 4 get islanded, that is, meaning that there is no AC grid

available at Mundra Bus #4 (Case of detected islanding). This is active all the

times.


2. When Mundra Bus #4 bus coupler is closed but the frequency of bus rises above

preset frequency, in this case 50.5 Hz or falls below 48.5 Hz.

In case 1, the controller sees the opening of bus sectionalaliszer breakers. In such a

case, the HVDC Controller follows the frequency and increases/decreases HVDC

power so as to bring the frequency of Mundra bus #4 to acceptable level.

In case 2, the controller purely depends upon the frequency and acts in case the

frequency goes beyond 50.5 Hz in upper side and 48.5 Hz on lower side. The power is

restored once the frequency returns within the dead band.

The action happened on 11.10.2013 is similar to case 1. This controller is enabled

when the frequency controller is switched ON. Controller 2 got activated on 11-10-

2013 morning at 08.00.08 when the frequency crossed 50.5 Hz. As the frequency was

rising, the power also increased and when the power reached 2150 MW at 08:03:18

hrs, the upward trend of frequency stopped and downward trend started. As the

frequency started returning towards normal, the frequency controller also started

reducing power automatically and at 08:07:00 hrs when the frequency returned below

50.5 Hz, the power level returned to earlier 1500 MW. The frequency plot is attached

at Annexure-A.

The controller was earlier kept off. It was switched on 24th September, in compliance

to the Minutes of Meeting dated 5th September 2013 taken by Chairperson CEA under

“Other issues” point No. 11(ii). APL sent confirmation of switching ON of the

frequency controller to NLDC and WRLDC vide email dated 24th September. SLDC

Gujarat was also sent the mail along with all the documents by mail dated

28th September.

Member Secretary, WRPC requested APL to clarify following queries:

i Under which regulation/Order/direction, APL put and activated Frequency

Controller.

ii Which agency approved the settings of frequency controller and why approval

of WRPC was not taken as mandated by IEGC.


iii How frequency came down below 50.5 Hz at 8:15 hrs. does the power will

reduces as soon as frequency come down below 50.5 Hz or is there any band

for frequency control action.

iv Why there is need to implement frequency controller in synchronous grid

v Whether HVDC have earlier been tested for power flow more than 1500 MW?

GM, APL informed that

i) The settings were done to comply with item 11) ii) of the MOM taken by CEA on

05/09/13 which reads “The controllers at the HVDC terminals such as frequency

controller and power oscillation damping (POD) controller may also be put in

service with immediate effect. M/s APL would forward the study reports at the

time of commissioning.”

ii) The setting applied were standard one as per general operating pattern of NEW

grid and as per recommendations of SIEMENS and APL presumed that CEA had

obtained concurrence of WRPC/WRLDC.

iii) GM, WRLDC intimated that increase in frequency was due to cyclone effect.

Also, frequency was dropped due to tripping of power evacuation lines in NR.

Koteshwar (4x100 MW=400MW) was out immediate after incidence without load

loss which might brought the frequency below 50.5 Hz

iv) As per SIEMENS recommendations. APL could not give satisfactory rationale.

v) HVDC has not been tested for power beyond 1500 MW.

Member Secretary, WRPC directed APL to deactivate both frequency controller and

Power Oscillation Damping controller till it is discussed and approved by WRPC.

APL representative intimated that frequency controller was already put in off mode

after receipt of mail from NLDC on 12.10.2013. He also assured to disable POD

feature immediately. APL vide email have intimated that APL have disabled POD

controller on 17.10.2013 as per directions of WR OCC forum.

Member Secretary, WRPC suggested APL to get endorse any decision from

appropriate forum of WRPC before implementing any protection scheme in Regional


Grid, including in their own system as APL is a major player in operation of

interregional grid.

Sub-Committee noted as above.

B. OUTAGE OF 500 KV DC CHANDRAPUR-PADGHE HVDC BI-POLE:

DGM(WRTS-I), Nagpur vide letter dated 14.10.2013 intimated that POWERGRID is

constructing 400 KV Aurangabad(POWERGRID)-Aurangabad(MSETCL) line and 400

KV Aurangabad-Boiser line, which are in advance stage of completion. These lines

are crossing Chandrapur-Padge HVDC Bi-pole lines at FOUR locations. The

shutdown was proposed on Chandrapur-Padghe HVDC Bi-poles in September,2013

to facilitate the completion of crossing work of 400 KV Aurangabad(POWERGRID)-

Aurangabad(MSETCL) and 400 KV Aurangabad-Boiser line. The shutdown was

discussed in last OCC meeting, however, could not be approved due to system

constraints. The preparation for crossing of above these two lines with HVDC lines

has been completed and the lines are scheduled to be commissioned in November,

2013.

In view of this, it is requested that the shutdown of following lines are required to

complete the power line crossing work of 400 KV Aurangabad(POWERGRID)-

Aurangabad(MSETCL) and 400 KV Aurangabad-Boiser line.

1. 500 KV DC Chandrapur-Padghe HVDC Bi-pole line on 9.11.13 and 10.11.13 on

continuous basis.

2. 220 KV Chitagaon-Shendra line of MSETCL on 9.11.13 and 10.11.13 on

continuous basis.

The proposed shutdown period shall be from 0700 HRS of 09.11.2013 to 1800 HRS

of 10.11.2013.

Sub -Committee discussed the matter and members have agreed for outage of 500 kV

DC Chandrapur-Padghe HVDC bi-pole on 09.11.2013 and 10.11.2013 from 0800 hrs

to 1800 hrs on continuous basis.

The above line outage shall be subjected to following conditions:


1. 400 kV Parli – Pune line (Reliance line) should be in service.

2. 400 kV Solapur-Kolhapur D/C line might be in service(Reliance may make

all efforts to restore line before 09.11.2013)

3. Kawas & Gandhar Generation shall be picked up and beneficiaries shall

requisitioned up to maximum extent possible if necessary

4. Koyana generation shall be picked up during the outage period.

Further the line outage approvals are subjected to real time conditions as decided by

WRLDC.


C. TECHNICAL MINIMUM REQUISITION FOR COAL FIRED CENTRAL SECTOR GENERATING STATIONS:

In 24th WRPC meeting held on 09.10.2013 at Goa, constituents agreed on

following decisions as regards to scheduling of central sector coal fired stations

during very low demand period.

TCC recommended that the unit having capacity more than 500 MW and above

shall scheduled at technical minimum of 60% of their capacity and below 500 MW

shall be scheduled at 70% of their capacity.

(i) WRLDC ensured to take care of ramping up and down the units/stages during

schedule.

(ii) Beneficiaries who had already given requisition for full, it will not be reduced and schedule raised suitably.

GM(Comml), GUVNL, suggested for operation of required Generating Units at their

rated capacity instead of operating all the units at technical minimum which may

improve the performance of unit & also save the fuel.

Constituents have agreed with stage wise operation so that entitled allocation of

beneficiaries should not be affected.

In view of the above GM, WRLDC intimated vide letter dated(copy enclosed at

Annexure-SA-2) that the requisitions received from few of the beneficiaries were in

large variance with 24th WRPC decision.


Also during 24th TCC/WRPC at Goa it was clarified that all machines at SSP would

be kept running under spill over condition so as to tap the potential available. The

machines may have to shut down in case of transmission constrains.

Member Secretary, WRPC appraised the forum about the decisions taken in 24th

WRPC Meeting held at Goa on 8/9 Oct 2013 regarding technical minimum scheduling

of coal based units. He informed that technical minimum level for 500 MW units was

decided at 60% and for 200/210MW units it would be 70%. In case of requisition from

beneficiaries being lower than the technical minimum the schedule shall be enhanced

by WRLDC to at least technical minimum levels.

NTPC informed that despite the agreements during above TCC/WRPC Meeting,

technical minimum scheduling of NTPC units is not being ensured and that there is

abnormal variations in the schedule being allotted to NTPC units without any regard to

ramp-up/ramp-down provisions of IEGC. In this regards NTPC quoted specific

incidences of abnormal variations in scheduling of Vindhyachal stage 1 & 3 on

13/10/2013. NTPC stated that on one hand schedules substantially less than technical

minimum were being allotted and on the other hand NTPC was being served over

injection/under injection notices by WRLDC . Further NTPC also informed that on

many occasions NTPC was asked to take up directly with the beneficiaries for

revising the schedules to achieve technical minimum levels which was not as per the

practice followed by WRLDC till recently.

NTPC also requested that maximum technical capability of on-bar units should be

considered by WRLDC while compiling schedules of various beneficiaries.

In this regard WRLDC stated that the beneficiaries of respective stations should

ensure technical minimum scheduling by revising their schedules to achieve the

technical minimum levels.

Member Secretary, WRPC intimated that WRPC forum is highest forum in regional

level and any decision taken in that forum cannot discussed in lower forum i.e. OCC

as WRPC forum has consented only after due deliberation in TCC forum where all

beneficiaries participated. Thereafter he further stated that the decision taken in

WRPC has to honored by constituents.

Member Secretary, WRPC finally concluded that WRLDC and all beneficiaries must

ensure technical minimum schedule of NTPC coal based units and also that proper


ramp-up/ramp-down time should be considered in line with agreements in 24th

TCC/WRPC Meetings till final decision taken in the issue of Reserve Shutdown of

units and technical minimum in a meeting of separate group to be held in first week of

November 2013.


Member Secretary then requested to SE(Operation), WRPC to take up the regular

agenda items.

ITEM No. 1: CONFIRMATION OF THE MINUTES

Minutes of 451st meeting of Operation & Coordination Sub-Committee of WRPC held on

12th September 2013 at NTPC Mumbai, hosted by NTPC were forwarded vide letter No.

WRPC/OPN/OCC-Minutes/2013-14/9837 dated 23.09.2013.

CE, SLDC Kalwa, Maharashtra commented on Agenda Item no.9.6 : SPS

commissioning at Tiroda:

Quote

“ MSETCL informed that the SPS envisaged for Tiroda was yet to be implemented. “

Unquote

Should be replace by

“MSETCL informed that SPS envisaged for Tiroda, based on inputs from Wardha(PG)

substation was yet to be implemented, but SPS based on WRLDC SCADA input is

implemented and is operational.”

As above modification reflects the factual position, modification was accepted.

Minutes of 451st OCCM were confirmed with above modifications.


ITEM No.2: REVIEW OF SYSTEM OPERATION DURING THE MONTH OF SEPTEMBER 2013

SE(Operation), WRPC requested WRLDC to brief the Committee on Grid Operation

experiences during September 2013.

Chief Manager, WRLDC in the presentation ( copy attached at Annexure – 2 in soft copy) concentrated broadly on the performance of the grid for month of September 2013 as below:

Frequency Particulars WRLDC presented the following highlights of grid operation during the month of

September 2013.

During September 2013 the system frequency was below 49.7 Hz for 1.51 % of

time against 0.6 % of time during August 2013. The system frequency was within the

IEGC range of 49.7 Hz -50.2 Hz for 89.24 % of the time against 75.17 % of time during

August 2013. The average monthly frequency was 50.02 Hz during September 2013,

whereas it was 50.07 Hz in the month of August 2013. Regarding operation in high

frequency range, frequency during the month of September 2013 was above 50.20 Hz

for 9.25 % of time against 24.11 % of time during August 2013.

The detailed frequency particulars are enclosed at Annex- 2.1.

The Sub-Committee noted. Inter-regional exchanges status:

There was a net inter-regional export of 2231.41 MUs by WR against net export

schedule of 2326.41 MUs.

The Sub-Committee noted as above. 2.3 Voltage Profile

Voltage profile at some of 765/400 kV sub-stations during the month of

September 2013 furnished by WRLDC is enclosed at Annex-2.3. During the month, the deviations of voltages from the accepted limit on either

side were recorded at the following locations in WR grid: -


S.No. 765/400kV Sub-station

Max. Voltage

observed (kV)

Date of incidence

Min. voltage

observed (kV)*

Date of incidence

1 Indore 427 29.09.13 - -

2 Itarsi 427 03.09.13 - -

3 Karad 440 29.09.13 - -

4 Dhule 440 17.09.13 - -

5 Asoj 423 25.09.13 - -

6 Kasor 425 20.09.13 - -

7 Bhilai 431 22.09.13 - -

8 Jetpur 426 26.09.13 - -

9 Bina 426 21.09.13 - -

10 Gwalior 421 22.09.13 - -

11 Nagda 428 25.09.13 - -

12 Khandwa 432 17.09.13 - -

13 765kV Bina 802 29.09.13 - -

14 765 kV Gwalior

801 16.09.13 - -

• Minimum voltages beyond IEGC range were not observed at above substations.

The Sub-Committee noted as above. 2.4 U/F Relay Operations

As per WRLDC records during September 2013 the system frequency didn’t touched 48.8 Hz. The details of UFR operation for the month of September 2013 is enclosed at Annexure-2.4.

The Sub-Committee noted as above. 2.5 Power Cuts / Load Restrictions

The committee noted the details of Power Cuts and Regulatory Measures during

September 2013 as furnished by the state utilities as per the enclosed Annexure-2.5.

The Sub-Committee noted the above.


2.6 Details of Generating Units under Forced outages

Details of generating units under forced outages during September 2013 were discussed. The modified details of force outages programme of Generating units are given in Annexure-2.6.

The Sub-Committee noted the above. 2.7 Details of Generating Units under Planned outages The status of planned outage is modified as per intimation by concern members. The modified details of generating units under Planned Outages during September 2013 are given in Annexure-2.7.

The Sub-Committee discussed and finalized the planned outages.

ITEM No.3: OPERATIONAL PLANNING 3.1 Proposed outage programme of generating units

The maintenance programme of generating units for October 2013 & November 2013 was discussed. The Sub-Committee finalized the outage schedule of generating units for the above period and the modified outages plan is placed at Annexure-3.1.

3.2 A. Outage Programme of Transmission Lines/elements

SE(Opn), WRPC informed that for the 453rd OCC transmission elements outages planning data, must be submitted on or before 05.11.2013. Inter-regional outages proposal must be submitted on 01.11.2013 so that it can be take up with the counterpart of other region as well as NLDC. The Committee discussed the maintenance Programme for transmission lines/elements for the months of October & November 2013.

The Sub-Committee discussed and finalized the planned outages(enclosed at Annexure-3.2 A & Annexure-3.2 B).

B. Line outages planned vs. implemented:

In 445th OCC it was decided that the status of lines planned vs. lines availed and any

deviation from planning or emergency outages for the concerned month shall be

submitted by WRLDC for discussion in respective OCC. Accordingly in the next OCC,

WRLDC would furnish the status of complete list of line outages during the month of

October 2013 planned vis-à-vis implemented.


WRLDC submitted the status of planned transmission element outages vs.

actual availed or emergency outages during the September 2013(Attached at

Annexure-3.2-C).

Sl no Particular

Number

1 Outages for Sep 2013 approved during 451st OCCM

164

2 Reliability Consent was available for 154*

2 Outages Availed 88

3 Availed outages as % of approved 57.14%

*-The list of outage requests where Reliability Coordinators advised rescheduling is given at Annexure-3.2-C-1.

SE(Operation), WRPC pointed out that out of approved transmission outages bulk

quantum of outages are not availed by constituents even when there is no real time

condition problem. He further stated that after approving outages for particular date

for particular line, outage on parallel line or for the line in the same corridor is very

difficult owing to consideration of the fact that the approved outage would be availed

by that constituent. But non-availing of such outage by any constituent deprives other

constituent requiring important outage. Also, sometimes the outages for two agencies

are clubbed together with change in dates suitable to one agency. In case such

outage is not availed by the agency for whom the dates are suitable, other agency

unnecessarily have to shuffle their plan/manpower which cause trouble to them.

He requested constituents to restrict the proposal on outages to really required. The Sub-Committee noted as above. 3.3 ANTICIPATED POWER SUPPLY POSITION FOR THE MONTHS – OCTOBER

2013 & NOVEMBER- 2013 Anticipated Power Supply Position for the months of October 2013 & November 2013

were discussed. The details of anticipated regional deficit are given below:


(All figures in MW) State/ Region

October 2013 November 2013 Anticipated Availability

Anticipated Peak Demand

Shortage AnticipatedAvailability

Anticipated Peak Demand

Shortage

GETCO 12781 12840 59 12415 12440 25

MPPTCL 9295 9295 0 11250 11250 0

CSEB 3072 3180 108 2894 3005 111

MSETCL 17116 17600 484 17158 17900 742

GOA 395 420 25 409 430 21

DD 357 365 8 345 355 10

DNH 646 650 4 640 645 5

WR 40022 41364 1342 42536 44255 1719

Details of anticipated restricted & un-restricted demands for the months of October 2013 & November 2013 are given in Annex 3.3 (A). The Sub-Committee noted as above. ITEM No. 4: OPERATIONAL STATISTICS FOR THE MONTH OF SEPTEMBER 2013 The details of schedule Vs actual generation, demand, drawl of power from

grid; exchanges etc. are given in the following Annexure:

Annex 4.1 - Schedule Vs Actual Generation and Requirement for September 2013 Annex 4.2 - Peak Demand: Schedule Vs Actual for September 2013 Annex 4.3 - Integrated Operation of the System & Operation of Inter State Tie lines for September 2013 Annex 4.5- Details of Declared Capacity, Schedules and Injections from Central sector stations, Drawl Schedules and Entitlements of constituents during September 2013 Annex 4.6 - Inter System Exchanges for September 2013 Annex 4.7- Details of level of Major Reservoirs in Western Region for September 2013

The sub-Committee noted as above.

ITEM No. 5: SYSTEM DISTURBANCE IN WESTERN REGION

There was no major grid disturbance in the Western Region during the month.

The consolidated list of other grid disturbances as furnished by WRLDC is attached at Annexure- 5.

The Sub-Committee noted as above.


ITEM No. 6. Confirmation of Healthiness status of SERs/DRs equipment in the system.

Constituents have furnished the status of healthiness of SER/DRs in their

systems on the dates below:-

Sl No. Name of constituents

Date of Receipt

1 PGCIL,WRTS-I 08.10.2013 2 PGCIL,WRTS-II 09.10.2013 3 MPPTCL 17.10.2013 4 NTPC 10.10.2013 5 CSPTCL 10.10.2013 6 GETCO 05.10.2013 7 MSETCL 17.10.2013

Constituents of WR were requested to continue sending the information as per the

recommendation of enquiry committee of Grid disturbances on 25.02.2007 and

28.02.2007.

The Sub-Committee noted as above. ITEM No. 7: STATUS OF COMPLETION OF ONGOING SCHEMES FOR COMMISSIONING OF REACTORS, TRANSMISSION LINES AND GENERATING UNITS IN WR.

7.1 Status of completion of ongoing Schemes for Commissioning of reactors.

As discussed in 452nd OCCM and as per the present status available on the work for

providing additional reactors at the various locations in WR.

Accordingly the information regarding the commissioning schedule is as below:

S. No.

400 kV Sub/stn.

Size (MVAR)

Implementing agency

Expected commissioning date

1 Ranchodpura 125 MVAR GETCO Commd. On 8th July 2013 2 Varsana 125 MVAR GETCO Commd. On 25th July 2013 3 Rajkot 125 MVAR GETCO Commd. On 5th August 2013 4 Amreli 125 MVAR GETCO Commd. On 12.07.2013 5 Tamnar

Raigarh 1x125 JPL Commd. on 04.12.2012

6 Jetpur 63 MVAR GETCO Commd. on 11.07.2013 7 Zerda 125 MVAR GETCO Commd. in July 2013 8 Limbdi

(Chornia) 125 MVAR GETCO 25th July 2013

9 Jabalpur 125 MVAR PGCIL June 2014 10 Khandwa 125 MVAR PGCIL June 2014


11 Shujalpur 125 MVAR PGCIL June 2014 12 Bhatapara 125 MVAR PGCIL June 2014 13 Raigarh 125 MVAR PGCIL June 2014 14 Aurangabad 125 MVAR PGCIL June 2014 15 Nanded 125 MVAR MSETCL 2014 16 Sholapur 125 MVAR MSETCL 2014 17 Kolhapur 125 MVAR MSETCL 2014 18 Akola 125 MVAR MSETCL 2014 19 Nagda 125 MVAR MPPTCL September 2014 20 Bhopal 80 MVAR MPPTCL March 2014 21 Damoh 125 MVAR PGCIL August 2014 22 Bachau 125 MVAR PGCIL August 2014 23 Pirana 125 MVAR PGCIL August 2014 24 Itarsi 2X125

MVAR PGCIL August 2014

25 Seoni 125 MVAR PGCIL August 2014 26 Parli 125 MVAR PGCIL August 2014 27 Raipur 125 MVAR PGCIL August 2014 28 Gwalior 125 MVAR PGCIL August 2014

In 36th Standing Committee of CEA 3 more reactors have been approved to be installed at Dhule, Rajgarh & RGPPL. 7.2 Status of completion of ongoing Transmission Schemes being executed/implemented by POWERGRID/ Other Agencies The updated status on various ongoing transmission schemes for the current year as per the current information available is as follows: - S. No.

Name of the Line Target Completion Date

Remarks

POWERGRID 1 400 kV Vapi(PG)-Navsari Commissioned on

16.03.2013 2 400 kV Navsari - Navi Mumbai D/C

Line Dec- 2013 ROW problem

3 765kV S/C Satna-Gwalior line (Ckt.-I) October- 2013 4 765kV S/C Satna-Gwalior line

(359Km + 60Km D/C Portion) Ckt.-II Dec.- 2013

5 765 kV Sasan-Satna-II Commissioned on 01.06.13

GUJARAT 1 400 kV D/C Kosamba-Chorania line

(Package I)(From Chorania S/S to AP-54)

December -2013


2 400 kV D/C Kosamba-Chorania line (Package II)(From Kosamba S/S to AP-54)

December -2013

3 400 kV D/C Mundra-Zerda line No. 1 December -2013

4 400 kV D/C Mundra-Zerda line No. 2 December -2013

5 400 kV D/C Vadinar-Amreli line December -2013

6 400kV Mundra-Hadala LILO to Halvad

December -2013

7 400 kV D/C Amreli-Kasor line(Part-1) December -2013

MADHYA PRADESH 1 Malwa-TPH-Pithampur 400KV

DCDS Line October- 2013

2 Malwa TPH-Chhegaon 400 KV DCDS Line

Ckt –I on 22.03.2013 Ckt-II on 11.07.2013

3 Chhegaon-Julwania 400 KV DCDS Line

March - 2014

4 Pithampur- Indore 400KV DCDS Line

November 2013

5 Satpura TPH-Ashta 400KV DCDS Line

December – 2014

CSPTCL 1 400 kV Korba (W)-Khedamara

DCDS Ckt II LILOed at Marwa August 2013 Test charged on

20.08.2013

2 400 kV Khedamara- Raita DCDS January -2014

3 400kV DCDS Marwa-Raipur(Raita) January -2014

Test charge from Raipur end in August 2013

4 LILOof 400kV K(W)-Khedamara line at Marwa (one ckt.)

January -2014

MAHARASHTRA(STU)

1 400KV Chandrapur- II- Warora D/C October -2013

2 400KV D/C line from Koradi-II to Wardha S/S(PG) D/C

December-2013


MAHARASHTRA (IPTC route) by WR Transmission (Mah) Pvt. Ltd

1 400 kV Parli(PG)-Pune D/C October-13 To be commissioned on 30.10.2013

2 400 kV Pune (PG)-Aurangabad (MSETCL) D/C

November-13 To be commissioned on 30.11.2013

3 LILO Lonikhand –Kalwa at Pune(PG) Lonikhand-Pune charged on 21:30 on 09.07.2013 and Kalwa –Pune at 21:45 on 09.07.2013.

GUJARAT (IPTC route) by WR Transmission (Guj) Pvt. Ltd

1 400 kV Rajgarh(PG)-Karamsad (GETCO) D/C

February -2014

The Sub-Committee noted as above. 7.3 Commissioning of new Generating units in Western Region and the capacity expected to be commissioned during the year 2013-14 The status regarding Generating units, commissioned /expected to be commissioned during the current year 2013-14 according the available information is as below:

Name of the Power Projects Unit No. Capacity (MW)

Date of Commissioning /Schedule Date

GUJARAT Ukai 6 500 COD on 08.06.2013

Pipavav CCPP- GPCL & GSPC joint venture Block-1 350 OCTOBER 2013 Bhavnagar Lignite TPP-JV I 250 DEC 2013 II 250 DEC 2013 UNO SUGEN 1 382.5 COD on 04.04.2013 CHHATTISGARH Marwa TPS I 500 December 2013 Korba (w) Ext-5 500 COD on 05.09.2013 KSK Mahanadi 3 600 COD on 14.08.2013

VEDANTA VIDYUT 1 135 Synchronized on 11.08.2013

MAHARASHTRA INDIABULLS (Amaravati) 1 270 Synchronized on 03.06.2013

INDIABULLS (Amaravati) 2 270 DEC-13

INDIABULLS (Sinnar) 1 270 NOV-13


VIPL 1 300 COD on 05.04.2013

VIPL (Butibori) 2 300 OCT-13

GMR EMCO 2 300 COD on 27.08.2013

Dhariwal 1 300 Synd. On 2.9.13

MADHYA PRADESH

SINGAJI TPP 1 600

Synchronized on 31.08.2013

Coal fired on 30.09.2013

2 600 June-2014 M/s Jhabua Power, Seoni

1 300 JANUARY – 2014 MB Power, Anuppur

1 300 JANUARY – 2014 Satpura

11 250 Synchronized on 02.10.2013

SATPURA 10 250

COD on 18.08.2013

CENTRAL SECTOR Vindhyachal TPP IV 12 500 JAN-14

MAUDA 2 500 JAN-14

The Sub-Committee noted as above. ITEM NO. 8: MISCELLANEOUS OPERATIONAL ITEMS (A) FOLLOW-UP

8.1 QUARTERLY REVIEW OF CRISIS MANAGEMENT PLAN

All the constituents are requested to submit the CMP report for the Second

quarter (July 2013 to September 2013) for the year 2013-14.


8.2 STATUS OF PHYSICAL & CYBER SECURITY IN POWER SECTOR REGARDING

Status of physical & cyber security in Power Sector for the Second quarter (July

2013 to September 2013) have not been received from some of the constituents.

Chief Engineer, DPDD, CEA , intimated vide letter dated 22.07.2013 that office of

Secretary(Security), Cabinet secretariat vide letter dated 13.06.2013 forwarded by MOP

letter dated 21.06.2013 to CEA have sought the present status for preparation of cyber

security plan to counter cyber attacks by power utilities. Therefore all the constituents


shall furnish the present status pertaining to their system to the Chief Engineer, DPDD,

CEA, Seva Bhawan, R K Puram New Delhi 110066(fax no 011-26102793) under

intimation to WRPC Secretariat at the earliest.

In 451st OCC meeting NTPC representative made a presentation on current

procedures adopted by NTPC on cyber security. It was further decided that PGCIL

would prepare and issue guidelines for all transmission licensees for implementation of

CMP and present in next OCC meeting. Due to scarcity of time the presentation by

PGCIL could not be taken in this OCC. PGCIL would make a presentation in next OCC.


8.3 SHIFTING OF 50 MVAR AKOLA-I REACTOR :

POWERGRID requested that 50MVAR Akola# 1 reactor at Aurangabad is out of

service since 06/09/2013. The request for shifting of this reactor was put up to OCC

members in 450th meeting and accordingly the shutdown was approved to shift the

reactor from Waluj MSETCL S/S to POWERGID Aurangabad S/S in Aug-2013,

however the reactor could not be shifted due to it’s requirement on account of high

voltages. Since the reactor is not taken into service from 06/09/13 it is proposed to

shift the reactor to POWERGID Aurangabad immediately, accordingly necessary

shutdown of Akola# 1 needs to be accorded by WRLDC.

SE(Operation), WRPC queried MSETCL regarding problems in handing over reactor

to PGCIL. MSLDC representative intimated that he would talk to their management

and resolve the issue within 7 days.


8.4 TRAIL OPERATION OF TRANSMISSION ELEMENTS:

Petition No: 96/TT/2011 dated 27.09.2013:

In the matter of Approval under Regulation 86 of Central Electricity Regulatory

Commission(Conduct of Business) Regulations 1999, and Central Electricity

Regulatory Commission (Terms and Conditions of Tariff) Regulations 2009, for

transmission tariff for LILO of Nalagarh –Kaithal line at Patiala along with associated

bays and 125 MVAR Bus Reactor at Patiala and 400/220 kV 500 MVA ICTs both at


Patiala and Malerkotla S/S along with bays under Northern Region Strengthening

Scheme –XIV (NRSS-XIV) in Northern Region from revised anticipated date of

commercial operation i.e. 1.7.2011 to 31.3.2014, Hon’ble CERC pointed out that the

2009 Tariff Regulations do not define the trial operation in case of transmission

elements and the successful test charging is considered as trial operation accordingly,

successful test charging by the petitioner is considered as completion of trial

operation.

Further Hon’ble CERC directed RPCs to discuss the issue of trial operation of

transmission elements and submit the proposals to CEA who in turn shall submit a

consolidated proposal regarding trial operation of transmission elements to the

Commission. The staff of the Commission shall study the proposal made by CEA and

make suitable changes to the existing Regulations to deal with all such cases in

future.

OCC discussed the matter and commented as below:

• Since the trial operation of transmission elements was conducted after diligently

following all the pre-requisite such as availability of protection system, all the

associated elements, approval of inspectorial wing of CEA, metering and

availability of data etc.

• The trial operation could be considered as commissioning of transmission

elements as it is presumed that all the aspects of transmission elements are in

place and functional.

• Line should be in service for sufficient period for stabilization more than 48 hrs.

• Claused in BPTA signed by beneficiaries with transmission licensee to be

followed.

• No planned shut down should be allowed during the first one month of trial

operation and if planned outage is availed the commissioning of elements

should be considered after the completion of planned outage and charging of

the element subsequent to planned outage.



8.5 FORMULATION OF ISLANDING SCHEME FOR KAKRAPAR APS

SE(opn) SLDC, GETCO vide letter no GujSLDC/CE/MIS/KAPS islanding mtg/081013

Dated 08.10.13 intimated that a special meeting held at Kakrapar on 03.09.13 for

reviewing / formulating various islanding schemes in WR, a meeting was convened at

SLDC, Vadodara on 08.10.2013, for discussing and working out the details of

islanding scheme for Kakrapar APS. The Minutes of the said meeting is attached at

Annexure 8.5 for suggestions / comments.

GM, WRLDC intimated that a meeting is fixed on 18.10.2013 at WRLDC for

discussions on above issue. SE(Operation), WRPC requested constituents to offer

their suggestions/comments and forward the outcome of meeting on 18.10.2013 to

WRPC.


8.6 VENUES FOR OCCMs: SE(Operation), WRPC stated that due to increasing number of utilities representing

OCC forum of WRPC and monthly frequency of OCC meeting it is proposed that

monthly OCC meeting may be hosted by the various utilities who are regularly

represented through their membership in the OCC at their respective sites/ nearby

locations. Accordingly following roaster has been prepared tentatively commencing

with 454th OCC meeting of December 2013:-

OCC ROSTER SR NO UTILITIES OCC NO. MONTH

1 CHHATTISHGARH 454 Dec-13 2 GUJARAT 455 Jan-14 3 DD 456 Feb-14 4 RGPPL 457 Mar-14 5 MAHARASHTRA 458 Apr-14 6 NTPC, HQ-II Raipur 459 May-14 7 WRTS-I 461 Jun-14 8 TAPS-1&2 462 Jul-149 NTPC Gandhar/Kawas 463 Aug-14

10 GOA 464 Sep-14 11 MADHYA PRADESH 465 Oct-1412 NTPC Vindhyachal 466 Nov-14


13 TORRENT POWER 467 Dec-14 14 TATA POWER 468 Jan-15 15 NSPCL 469 Feb-15 16 SUGEN (TPL) 470 Mar-15 17 ESSAR 471 Apr-15 18 CGPL 472 May-15 19 NTPC, Korba 473 Jun-15 20 NCA 474 Jul-15 21 NHDC 475 Aug-15 22 NTPC Mouda 476 Sep-15 23 KSK 477 Oct-15 24 RELIANCE 478 Nov-15 25 NTPC SIPAT, CG 479 Dec-15 26 TAPS-3&4 480 Jan-16 27 RELIANCE SASAN 481 Feb-16 28 KAPS 482 Mar-16 29 JPL 483 Apr-16 30 NTPC Kawas 484 May-16 31 DNH 485 Jun-16 32 NTPC, Mumbai 486 Jul-16 33 ADANI TRANSMISSION 487 Aug-16 34 INDIAN RAILWAY 488 Sep-16 35 WRTS-II 489 Oct-16

The sub-Committee discussed and agreed to the schedule of OCC meetings as above. All the concerned constituting utilities were requested to initiate timely advance action viz approval from their management etc. for making necessary arrangements for the meetings and intimate venue, name of the coordinating officers in each of the preceding OCCM.


9.1 REVISED UNDER FREQUENCY RELAY (UFR)SETTING RECOMMENDED BY

NPC:

The status of implementation of revised under frequency relay (UFR) setting as

recommended in the 2nd meeting of NPC on 16.07.2013 is as follows:


The desired UF load shedding in MW for WR and individual states/UTs

Freq.(Hz) WR Gujarat MP Mah. CG Goa DD DNH 49.2 2060 580 460 805 150 25 10 30 49.0 2070 580 460 810 150 25 15 30 48.8 2080 580 460 815 155 25 15 35 48.6 2100 580 465 820 155 25 15 35

WRLDC stated that there were no excursions below 49.2 Hz during August 2013. All

the members were urged to expedite implementation of the revised UFR settings. Member Secretary, WRPC asked constituents to submit the status of installation of No of

relays, locations & quantum of load included in UFR scheme.

SE(O), WRPC requested constituents to implement settings in stage wise starting

from 49.2 to 48.6 Hz and complete all the settings wherever UFR relays are available

on priority. Status on completion of revised UFR setting is given below in a table:

Constituent 49.2 Hz 49.0 Hz 48.8 Hz 48.6 Hz

GETCO DONE DONE DONE DONE

MSETCL DONE DONE IN PROGRESS IN PROGRESS

MPPTCL DONE DONE IN PROGRESS IN PROGRESS

CSPTCL DONE DONE IN PROGRESS IN PROGRESS

Goa IN PROGRESS IN PROGRESS IN PROGRESS IN PROGRESS

DD IN PROGRESS IN PROGRESS IN PROGRESS IN PROGRESS

DNH IN PROGRESS IN PROGRESS IN PROGRESS IN PROGRESS


9.2 DEMAND MANAGEMENT DURING DIWALI FESTIVAL: This year the Diwali festival falls on 3rd Nov 2013. As observed from previous years

demand graph, there is a variation of around 3000-4000 MW before and after the

Diwali day. The following table summarizes the peak demand pattern of different

WR constituents during the Diwali festival in 2012 and 2011.


Diwali Day on 26.10.2011 (All fig. in MW)

DATE GOA DD DNH MSEB GUJ. MPSEB CSEB WR-Total 24.10.11 344 244 554 15789 10606 7776 2972 37374 25.10.11 329 231 530 15837 10287 8154 2992 36712 26.10.11 265 184 478 14451 9091 8028 2739 3373627.10.11 372 94 372 14616 8133 7128 2646 32397 28.10.11 373 150 468 14500 8404 7583 2748 33224

Diwali Day on 13.11.2012 ( All fig. in MW)DATE GOA DD DNH MSEB GUJ. MPSEB CSEB WR

11.11.12 345 232 575 15639 11137 9469 2621 38234 12.11.12 364 218 558 16111 10308 9543 2666 38508 13.11.12 315 167 496 14360 9508 9299 2407 3499414.11.12 360 96 396 14614 8997 8720 2399 34136 15.11.12 364 143 486 14547 8585 8258 2476 34429 It was observed that the rate of demand rise during onset of evening peak is in the

range of 2000-2500 MW per hour on the Diwali day. The WR constituents may plan

appropriate measures for the anticipated demand fluctuation during Diwali festival so

as to keep drawl as per schedule for secured grid operation during the festival.


9.3 OVER VOLTAGE PROBLEM IN WR :

9.3.1 The over voltage statics during the September 2013 is given below:

State S/S % age of time voltage >420 kV

% age of time voltage


State S/S % age of time voltage >420 kV

% age of time voltage


9.3.2 Status of Tertiary Reactors in WR: The tertiary winding reactors of 400/220/33 kV ICTs can be utilized for voltage improvement on HV side. The

list of 25 MVAR tertiary reactors available in WR grid is given below.

Sl NO Substation Reactor details (MVAR)

Rated Voltage

Net MVAR capacity

1 Jabalpur 2x25 33 50

2 Bina 2x25 33 50

3 Nagda 2x25 33 50

4 Indore 2x25 33 50

5 Bhopal 2x25 33 50

6 Satpura 2x25 33 50

7 Parli 3x30 33 90

9.3.3 Controlled Shunt Reactors: There are two number of Controlled Shunt Reactors (CSRs) of capacity 2 x50 MVAR on 400 kV SSP-Dhule double circuit

(D/C) lines at Dhule end. MSETCL intimated that revival of these reactors is in

process and may become operation within one month.

9.3.4 NGR bypass scheme for using LR as BR: The LRs on the EHV lines that kept out on voltage regulation can be used as bus reactors for voltage control

by providing NGR bypass scheme. The list of lines where such changeover of

LR to BR can be done with NGR bypass scheme is provided at Annex-9.3.4.

SE(Operation), WRPC intimated that this item was discussed in last PCM and

WRPC meeting and outcome of discussions is as below :

1. 30 line reactors are available which can be converted to Bus reactors by

bypassing NGR. This can be an immediate solution to deal with high voltage problems.

2. NGR bypass is essential and followed world wide to avoid failure of CBs.


3. In GETCO line reactors are being used as Bus reactors without

bypassing the NGR.

4. TCC recommended for installation of NGR bypass in all new Switch

yards.


9.4 EMERGENCY OUTAGES AVAILED DURING SEPTEMBER 2013

The summary of outages availed under emergency / Opportunity category are listed

under.

Category Of Outage Number Reasons

Emergency Outage 40 Hot Spot, Broken conductor, Oil leakage etc.

Opportunity Outage 9 Maintenance, Top Patrolling, Insulator

Replacement etc.

Total 49

The details of emergency outages availed during Sep 2013 are attached at Annex-9.4.


9.5 TELEMETRY ISSUES:

9.5.1 Failure of Communication Link: SCADA data remained out for a considerable amount of time during Sep 2013 due to failure of telecommunication network. The details are given under. Link Name

From (Date and Time)

To (Date and Time)

Total down time (hh:mm:ss)

Data affected(constituent wise)

Remarks

Itarsi -Kodia

01-09-2013 21:30

02-09-2013 11:00

13:30:00 CSEB,MP,GEB

OFC Cut

Bhopal-Bina

23-09-2013 10:00

23-09-2013 14:00

4:00:00 MP Booster

cars faulty


ULDC Link Asoj Mumbai

24-09-2013 09:40

24-09-2013 13:40

4:00:00

CSEB,MP,GEB Power Supply

Problem at Asoj

Total 21:30:00

Unavailability of SCADA data adversely affects the real time grid operation. Similar failure of Communication link was experienced in July-Aug 2013 and was discussed in 450th OCC. Power Grid apprise the members on the measures being taken to address the issue.

9.5.2 Non-availability of real time data from SASAN: The real time MW and MVAR data of uint #3 at Sasan UMPP was not available at WRLDC control room from 16-Sep-13 to 30-Sep-13. Reliance representative clarify as follows:

1. 765 kV Bus 1A was under shutdown during this period. Normally unit 3 is connected

on this bus and this voltage is selected for the MW transducer.

2. During his bus outage Unit 3 was running on bus 2 through tie bay.

3. Due to a wrong wiring schematic, the voltage selection for the MW transducer of

switch yard was not getting the bus voltage feedback (voltage from the second bus)

4. The issue has been taken up with Reliance engineering and shall be rectified in the

next bus opportunity..


9.6 SPS IMPLEMENTATION STATUS:

9.6.1 SPS at APL Tiroda: The non-operation of SPS at Tiroda was noticed during the tripping of one 400 kV Wardha-Parli line on 2.9.2013. The matter was already discussed during the 451st OCC and MSETCL agreed to implement the intended SPS at Tiroda at the earliest. Post the synchronization of 400 kV Warora-Chandrapur-stg-II line the SPS logic shall be reviewed. Committee discussed the matter and it was opined that there is no need to change the SPS settings unless margins of flow gate at Wardha changes.

9.6.2 SPS at Balco: The SPS at Blaco was scheduled for commissioning by Nov 2013 after commissioning of first unit of 4x300 MW Balco IPP.


9.6.3 SPS at CGPL: CGPL have intimated the status of implementation of SPS envisaged for tripping / over loading of evacuating feeders during 117th PCM of WRPC and the status is same as on date.

9.6.4 SPS for 765 kV Gwalior-Agra D/C (Generation Run back Scheme in WR): One SPS was envisaged for ensuring backing down WR generation by 500 MW ( VSTPS - 200 MW, KSTPS - 120 MW, CGPL - 180 MW) in case of sudden reduction of NR import from WR on Bina-Gwalior-Agra link by 1500 MW. The matter was already discussed in 449th, 450th and 451st OCC and 22nd WRPC meeting. During the 451st OCC NTPC intimated that they have got the approval from their corporate centre and it was decided to implement the same within a month. Regarding CGPL Power Grid representatives confirmed that tele-link was being provided at Mundra by them.

9.6.5 Defense mechanism for high frequency: With reference to item 9.3 of 450th OCC minutes and 9.15 of 451st OCC minutes, the status of implementation automatic tripping of generation at KSTPS (unit-7:500 MW), VSTPS (unit-7: 500 MW), CGPL (unit-10: 830 MW) at high frequency may be apprised to the committee


9.7 ENSURING RELIABLE POWER SUPPLY TO RAILWAY TRACTION IN WR.

Ensuring reliable power supply to Railway Traction network is a priority task of the

system operators, since it is an essential public service utility. Also quick restoration of

power supply to railway traction post any grid disturbance is of paramount importance

and for that a well-planned restoration method needs to be devised and updated from

time to time. WRLDC is in receipt of some information from Central Railways like

contact information of key officials connected with traction power supply, traction

network diagram of Central Railways etc. SLDCs may incorporate the details into their

system restoration procedures and they may also conduct meetings with the

respective divisions of Indian Railways connected with their system and collect the

relevant information for developing restoration plans for the traction supply being fed

from their state grids.

Representative from WRLDC intimated that

• Co-ordination between Engineers from Railway Traction, SLDCs, RLDC

necessary for quick restoration of power supply to Railway Traction post any

grid disturbance.

• The power supply diagram to traction network needs to be incorporated in the

System Restoration procedure of all the concerned states and WRLDC.


Member Secretary, WRPC stated that being an essential public service utility reliable

power supply to Railway Traction network is a priority task. Therefore Indian Railway,

WRLDC, Concerned SLDC, concerned Discoms/Transco & WRPC may go in detail &

device an islanding plan for Indian Railway traction system in Western Region. Also,

Railways to ensure from TATA Discom and Reliance inclusion of Railway feeder in

their scheme as top priority feeders for restoration.

Committee discussed the matter and it was highlighted that :

• System Recovery Procedure to be modified accordingly to give priority to

Railways and other important loads such as metro, city loads.

• Spare transformers, parallel lines to be kept ready

• To prepare and update contact for senior officials of WRLDC, WRPC, SLDC,

control rooms etc. and circulate to all.

• WRLDC in coordination with SLDC/ Railways to prepare a consolidated volume

of document to be prepared enlisting all connectivity diagrams, important

feeders and recovery procedure etc.

The Sub-committee noted as above. 9.8 RESTORATION OF 400 KV KOLHAPUR-SHOLAPUR D/C POST TOWER

COLLAPSE :

9.8.1 400 kV Kolhapur-Sholapur D/c lines are out since 17:00 hrs of 20-Sep-13 on collapse of 7 number of towers at approximately 22 kms from Sholapur (PG).

The prolonged outage of the 400 kV Kolhapur-Sholapur D/c had significantly

reduced the reliability margin in the nearby area. Several planned outages

including outage of +/- 500 kV HVDC C’Pur-Padghe bipoles has been

postponed till restoration of the above 400 kV D/C lines.

WRTM (Reliance) representative intimated that the lines would be available by

October 2013 end.

Further it is observed that in the absence of Sholapur-Kolhapur D/C, the flows

on Parli-lonikhand D/C has been in the range of 550-600MW per ckt despite the

flow on C'pur-Padghe in the range of 1200MW. Hence 'N-1' of tripping C'pur-

Padghe one pole or tripping of one ckt of Parli-Lonikhand D/C will lead to

emergency state in the grid. Hence Maharashtra shall maintain maximum

possible generation at Koyna/Jaigad or adequate load shedding so as to


maintain flow on Parli-Loinkhand D/C to less than 500 MW/ckt. Further

scheduling at RGPPL may be explored to tide over this critical situation.

It was requested to Reliance to restore the lines as early as possible.

9.8.2 220 kV Bachau-Halvad-1 & 2, 220 kV Bachau-Lalpar s/c, 220 kV Bachau-Morbi

s/c are out since 27.9.2013 due to tower collapse thus causing loss of anchoring at Bachau.

The Sub-committee noted as above.

9.9 VOLTAGE CONTROL THROUGH TAP COORDINATION

9.9.1 Tap Changing at 765/400 kV Satna ICTs and other locations in WR

As discussed in 450th and 451st OCC of WRPC the tap changing operation at

765/400 kV Satna ICTs has been done by WRTS-II (PGCIL) on 18 Sep 2013. The

voltage on 400 kV reduced by 3-4 kV and the voltage on 765 kV side increased by 14

kV after the tap changing operation on 18 Sep 13. The following plot indicates the

voltage profile improvement post the tap changing operation. The IEGC recommended

band for 765 kV voltage level is 728-800 kV and that for 400 kV level is 380-420 kV.

400

405

410

415

420

425

430

700 710 720 730 740 750 760 770 780 790

SATNA ICT 765/400 kV before tap changing

Volatge > 420 kV

Volatge


400

405

410

415

420

730 740 750 760 770 780 790 800

SATNA Scatter plot of voltage (765 kV vs 400 kV) After tap changing.

It may be seen that prior to change in tap position there was violation of IEGC

sec 5.2(s) on 765 kV as well as on 400 kV side.

9.9.2 Generator Transformer (GT) Tap Change at SASAN: SASAN vide letter No COG/SPL/2013 dated 26 Sep 13 confirmed that the GT tap at

SASAN has been changed from 3 (800/22 kV) to 4 (780/22 kV) as suggested by

WRLDC. The above tap changing operations are a welcome step toward controlling

prevailing high voltage condition in those areas. Reliance representative intimated that

now unit no 3 of Sasan started absorbing MVAR(Attached at Annexure-9.9.2).

GT Tap Change at Birsinghpur: With reference to WRLDC letter (WRLDC/MO-I/1734/2013) dated 10.7.13 and

subsequent discussion in 449th and 450th OCC MPPGCL shall update the progress on

the implementation of the recommended GT tap change for 210 MW units from 3 to 5.

9.9.3 GT Tap Change at JPL Tamnar: With reference to WRLDC letter (WRLDC/MO-I/1734/2013/153) dated 23.8.13 the

recommended tap change was to tap no.[4] , for GT-1, GT-2, GT-3) and to tap no. [6] for GT-4. Similarly it was also recommended vide the above letter to change the taps of station transformers (ST-1, ST-2,ST-3) to nominal tap position ie 9b. JPL Tamnar

shall kindly intimate the status of implementation of the above recommendations.

9.9.4 GT Tap change at Chandrapur TPS: With reference to WRLDC letter (WRLDC/MO-I/1734/2013) dated 26.7.13 and subsequent discussion in 449th and 450th OCC MSPCGL, Maharashtra shall kindly


intimate the status of implementation of the recommended tap changes at

Chandrapur. 9.9.5 GT Tap change at KSK Mahanadi: With reference discussions in the 451st OCC and WRLDC letter (WRLDC/MO-

I/1734/2013) dated 27.9.13, KSK Mahanadi was advised to change the GT tap

position from 7 to 12 and ST tap position from 2 to 9. KSK Mahandi shall kindly update

the status of implementation of the same. 9.9.6 GT Tap change at NSPCL: With reference discussions in the 451st OCC and WRLDC letter (WRLDC/MO-

I/1734/2013) dated 10.7.13, NSPCL was advised to change the GT tap position from 3

to 6. The Sub-committee noted as above.

9.10 INSTALLATION OF BUS REACTORS AND SHIFTING OF 125 MVRA SPARE REACTOR AT JABALPUR TO 400 KV DAMOH S/S.

The priority of reactors required by WRLDC and discussed in 22nd WRPC Meeting

held on 26th Feb’2013 has been provided at Annexure-9.10. Also the status of shifting

the spare 125 MVAR reactor at Jabalpur to Damoh S/S as discussed in the 23rd

WRPC meeting shall be intimated.


9.11 MOCK BLACK START EXERCISE As per sec 5.8(b) of IEGC the users/STUs etc. need to conduct black start mock exercises in their respective systems once in every six month under intimation to RLDC. Also the all the black start Diesel Generator (DG) sets are [as per sec 5.8(b) of IEGC] required to be tested weekly and the test report needs to be sent to RLDC on quarterly basis. The summary of the status of mock exercises in respect of black start facilities in western region is enclosed at Annexure- 9.11.

Accordingly the black start capable stations shall forward their tentative plan for conducting black start exercises in compliance to sec 5.8(b) of IEGC.

A mock black exercise was planned on 26th September 2013 at Kawas gas based

power station of NTPC located near Hazira in Gujarat. However the same exercise

was postponed by GETCO due to heavy rains in Gujarat. The same is rescheduled on

15 Oct 2013.



9.12 EXTENSION OF START-UP POWER FOR JP-BINA TPS Also in the 451st OCC, a proposal for devising a restoration plan for JP Bina TPS with

start-up power from Rajghat / Medikheda HPS was discussed. MPPTCL shall kindly

intimate the committee on the progress in the issue.


9.13 RELIABLE OPERATION OF RGPPL GENERATING UNITS : RGPPL had vide its letter dated 23.9.13 expressed concerns about blackout at

RGPPL on 16.9.13 due to tripping of evacuating feeders on high voltage. The high

voltage problem at RGPPL is a matter of concern.

The following measures are suggested in short term for addressing the high voltage

problem at Dabhol.

A. 400 kV Dhabol is connected to 400 kV Nagothane and 400 kV New Koyna by

double circuit Morculla Quad lines. During high voltage condition it is observed

that one ckt each of 400 kV Dhabol-Nagothane (137 km) and 400 kV Dhabol-

New Koyna (48 km) are hand tripped for voltage regulation. It is suggested that

instead of keeping two lines in service only one ckt of 400 kV Dhabol-New

Koyna D/C shall be kept in service as it is shorter. If the system condition

permits both circuits of the shorter line i.e. 400 kV Dhabol-New Koyna D/C shall

be kept in service.

B. The over voltage setting of 400 kV Dhabol-Nagothane D/C and Dhabol-New

Koyna D/C lines shall be reviewed and voltage grading along with time grading

shall be introduced to prevent simultaneous tripping of both the lines on over

voltage.

C. Operating three units of Koyna-IV as synchronous condenser during night off

peak

D. Maximize absorption of reactive power at Jaigarh

E. Review the tap setting of the Station Transformer at 400 kV Dhabol and explore

the possibility of suppressing 400 kV side voltage by changing the tap position.

F. Review the status of shunt capacitor bank at LNG terminal if any.

The following suggestions may be looked into for addressing the HV problem in long term


• RGPPL may also take up with MSETCL for alternate/standby LT connection for

extending power supply to the LNG terminal in case of loss of 400 kV lines. If

LT connection is not feasible then a Diesel generator may be installed for back

up supply during loss of EHV AC interconnection.

• Extracts from para 9.16 of the Minutes of 450th OCC meeting held in 12th

August 2013 are quoted below for ready reference.

“WRLDC also stated that there were several stations like RGPPL in WR that were under shut down and were drawing auxiliary supply from long 400 kV lines. The under-utilization of such 400 kV lines was resulting in severe high voltage in the absence of shunt reactors at the generating station end. Further opening of the 400 kV lines to control high voltage would cause interruption in essential/auxiliary supply at these stations. Members advised that such stations could explore the possibility of having alternate source at LT level and examine the feasibility of shunt reactor at the station.”……


9.14 SENDING DISTURBANCE RECORDER(DR)/SEQUENTIAL EVENT LOGGER(SERS) OUTPUT TO WRLDC:

With Reference to sec 5.9.6(c) of the IEGC and section 9.5.3 the Operating Procedure

of WR-2013, the DR/SER details for all grid incidents/disturbances need to be sent by

the concerned agency to RLDC, within 24 hrs of the incident. The status of receipt of

DR/SER by WRLDC from the concerned agencies for the month of Sep 2013 is given

at Annex-9.14.


9.15 FREQUENT TRIPPING OF 220 KV AURAIYA MALANPUR AND AURAIYA MEHGAON:

220 kV Auraiya-Malanpur and Auraiya Mehgaon circuits are frequently tripping on

circuit is frequently tripping Single phase to earth fault. The detail of tripping of these

lines is given below:

Date Time Circuit Reason

8-Sept-13 02:38 Auraiya Mehgaon R PH TO E/F

12-Sept-13 05:02 Auraiya-Malanpur R PH TO E/F


14-Sept-13 11:40 Auraiya Mehgaon B PH TO E/F

14-Sept-13 13:17 Auraiya Mehgaon B PH TO E/F

18-Sept-13 01:18 Auraiya Mehgaon R PH TO E/F




28-Sept-13 04:48 Auraiya-Mehgaon R PH TO E/F

29-Sept-13 05:57 Auraiya-Mehgaon Y PH TO E/F


9.16 TRIPPING OF LINES ON OVER-VOLTAGE

A. Akola and Nearby Area on Over-voltage : Date/Time No. of elements that

tripped simultaneously

Elements tripped

22/09/13 06:04 Hrs

4 400 kV Akola-Wardha I 400 kV Akola-Indiabulls 400 kV Indiabulls-Koradi II 400 kV Koradi II-Koradi

B. Frequent Tripping of Lines from Solapur, Karad and Nearby Area on Over-Voltage Date/Time No. of elements that

tripped simultaneously

Elements tripped

10/09/13 20:02 Hrs 2

400 kV Solapur (PG) -Karad 400 kV Solapur(PG)-Solapur

17/09/13 02:58 Hrs 2

400 kV Solapur(PG) –Kolhapur I 400 kV Solapur(PG) –Parli (PG) I

18/09/13 17:01 Hrs 3

400 kV Solapur (PG) -Karad 400 kV Solapur(PG) –Kolhapur II 400 kV Solapur(PG) –Parli (PG) II

28/09/13 03:26 Hrs 2

400 kV Solapur(PG) –Kolhapur I 400 Solapur (PG) -Karad


C. Frequent Tripping of 132 kV RP Sagar-Gandhisagar circuits :

Circuit Time Date Reason

132 kV Rpsagar-Gsagar-II 03:35 03-Sept-13 DPR operated

132 kV Rpsagar-Gsagar-II 22:55 22-Sept-13 B Phase to earth fault

D. Frequent Tripping of feeders emanating from Karad on over voltage: In the month of Sep 2013 there were several incidents of tripping of feeders

emanating from Karad on over voltage mainly during night off peak hrs as given

under. MSETCL may take appropriate measures to avoid such untoward tripping in

view of grid security.

Sl. No

Name of the feeder

Agency KV From To Reason

1 KARAD-SOLAPUR S/C MAHARASHTRA 400 20:02 10-Sep-13 08:06 11-Sep-13 TRIPPED ON O/V

2 KARAD-SHOLAPUR s/c PGCIL 400 02:58 17-Sep-13 08:41 17-Sep-13 TRIPPED ON O/V

3 KARAD-SOLAPUR-S/C MAHARASHTRA 400 23:52 19-Sep-13 08:44 20-Sep-13 TRIPPED ON O/V

4 KARAD-KOLHAPUR-II MAHARASHTRA 400 22:56 20-Sep-13 09:11 21-Sep-13 TRIPPED ON O/V


6 KARAD-KOLHAPUR II MAHARASHTRA 400 00:02 25-Sep-13 10:20 25-Sep-13 TRIPPED ON O/V

7 KARAD-KOLHAPUR - I MAHARASHTRA 400 19:38 26-Sep-13 07:48 27-Sep-13 TRIPPED ON O/V

8 KARAD-SHOLAPUR PGCIL 400 02:43 26-Sep-13 06:45 26-Sep-13 TRIPPED ON H/V

9 KARAD-KOLHAPUR-I MAHARASHTRA 400 23:23 27-Sep-13 23:34 27-Sep-13 TRIPPED ON O/V






Sl. No

Name of the feeder

Agency KV From To Reason



9.17 RGMO RESPONSE OF GENERATORS IN WR GRID: In the 451st OCC of WRPC it was agreed that the generating stations would plot the

response of their generating units (MW vs frequency) to the following two events that

occurred in the grid and enclose the same to corroborate their self-certification

regarding compliance to FGMO/RGMO provision of Grid Code. It was recorded in the

MoM of the 451st OCC that the generators would submit data in following format:

Station Name

Unit # ……

Event-1

19.08.2013 at 22:44 hrs

Event-2

31.08.2013 at 11:45 hrs

Initial frequency

At time T0 = 22:44 hrs

50.16 Hz 49.88 Hz

Final frequency 49.89 Hz 50.36 Hz

Delta frequency -0.27 Hz + 0.48 Hz

Generation by Unit at T0 = 22:44:00

Generation by Unit at T0 + 10 seconds




ITEM NO. 10: DATE AND VENUE OF NEXT OCC MEETING The 453RD OCC Meeting will be held on 15.11.2013 in Mumbai.

*****************

Sl.No. Organisation, Name & Designation E-mail Mobile No.

I WRPC

1 Shri S.D. Taksande, M.S. [email protected] 9820878384

2 Shri M.M. Dhakate, S.E. [email protected] 8108787778

3 Shri L.K.S. Rathore, DD [email protected] 9833371844

4 Shri P.D. Lone, DD [email protected] 9167831551

II MSETCL / MSEDCL/MahaGenco

5 Shri D.K. Rokade, S.E. [email protected] 9167831551

6 Shri A.V. Pachori, E.E. [email protected] 9619461420

7 Shri K.D. Daware, Dy.E.E. [email protected] 9619892035

8 Shri A.D. Karale, Dy.E.E. [email protected] 9820255082

9 Shri S.R. Bhat, Dy.E.E. [email protected] 8097231674

10 Ms. S.P. Mahajan, A.E. [email protected] 9619892041

III MPPTCL / MPPGCL

11 Shri P.K. Saxena, S.E. [email protected] 9425805267

12 Shri Jayant Agasty, E.E [email protected] 9425806822

IV CSPTCL / CSPGCL

13 Shri H.S. Rajput, S.E. [email protected] 9425543156

V GETCO / GVCL

14 Shri B.B. Mehta, C.E. [email protected] 9879200736

15 Shri K.G. Patel, Dy.E. [email protected] 9925210977

16 Shri B.M. Shah, Dy. E. [email protected] 9925212836

17 Shri C.S. Mehta, Dy.E. [email protected] 9925212833

VI WRLDC / POWERGRID

18 Shri P. Pentayya, G.M. [email protected] 9869072437

19 Shri S.K. Dambhare, A.G.M. [email protected] 9422811689

LIST OF PARTICIPANTS OF 452nd OCC MEETING OF WRPC HELD ON 17.10.2013 ANNEXURE-I

20 Shri V K Shrivastava, A.G. M [email protected] 9861452271

21 Shri S.S. Velayutham, D.G.M. [email protected] 9869008223

22 Smt. Sachala Mishra, C.M. [email protected] 9869450223

23 Shri Vivek Pandey, C.M. [email protected] 9869404673

24 Shri Anand Dubey, C.M. [email protected] 9428504065

25 Shri Aditya P. Das, Dy.M. [email protected] 9869404569

26 Shri Ravi A. Wadyalkar, Mgr. [email protected] 9423762547

VIII NTPC

27 Shri K.M.K. Prusty, A.G.M. [email protected] 9004497014

28 Shri S.K. Shrivastava, A.G.M. [email protected] 9004497150

29 Shri S.K. Haldar, A.G.M. [email protected] 7588184164

30 Shri Dilip Kumar Pramal, A.G.M. [email protected] 9426677158

31 Shri Swapan Paul, A.G.M. [email protected] 9004497138

32 Shri A.K. Chandeliya, D.G.M. akchandeliya@ntpc,co.in 9004497151

33 Shri Amitabh Kumar [email protected] 9425178122

34 Mrinal Chakravorty [email protected] 9425222267

IX TATA Power

35 Shri Ravikant Sankhe, GM-Opn. [email protected] 9099006541

36 Shri Gadave Prakash R, A.G.M. [email protected] 9223553341

X APL

37 Shri C.S. Bobade, G.M. [email protected] 8980802255

38 Shri Karikalan, Sr. Mgr. [email protected] 9099981340

XI RGPPL

39 Shri P.K. Gupta A.G.M. [email protected] 9423877469

XII RINFRA

40 Shri V.K. Reddy, President(Opn.) 9320660988

41 Shri G. Yella Reddy, V.President 9346781865

42 Shri Uday Karandikar, V.President [email protected] 9323551696

43 Shri M.K. Kore, DGM [email protected] 9325119427

XIII RAILWAY

44 Shri S. Bandyopadhyay, Dy.C.E.E. [email protected] 9987640312

45 Shri Milind A. Pakhare, S.E. [email protected] 9220834557

XIV NHDC

46 Shri Vinod Kumar Singh, Mgr. [email protected] 9425952513

XV NPCIL

47 Shri R.K. Gupta, O.S. [email protected] 9423081697

48 Shri S. Maskey, O.S. [email protected] 9423982768

49 Shri P.A. Rathod, S.O. [email protected] 9428821943

XVI Elec.Dept.Goa

50 Shri Sudan Kuncolienkar, A.E. [email protected] 8380015062

XVII KSK Mahanadi Power Co.Ltd.

51 Shri S.N.P. Singh, G.M. [email protected] 9685045741

52 Shri S.K. Prasad, Sr. D G.M. [email protected] 9630020203

XVIII ESSAR

53 Shri Kamlesh Garg [email protected] 9879102845

54 Shri O.J. Saxena [email protected] 9879101268

XIX TORRENT POWER LTD.

55 Shri T.A. Desai, A.G.M. [email protected] 922723306

XX JINDAL POWER LTD.

56 Shri A.P. Trivedi, Sr. D.G.M. [email protected] 7898905060

Anaulagnak 2.1

maah isatmbar 2013

1. INTEGRATED OVER AN-HOURek GaMTo maoM samaakilat

1.1 MAXIMUM FREQUENCY 50.32 Hz. BETWEEN 2000 Hrs & 2100 Hrs Hrs. ON 15.09.2013AiQaktma AavaRi%t

1.2 MINIMUM FREQUENCY 49.61 Hz. BETWEEN 1900 Hrs & 2000 Hrs Hrs. ON 07.09.2013nyaUnatma AavaRi%t

1.3 AVERAGE FREQUENCY 50.02 Hz.AaOsat AavaRi%t

2. INSTANTANEOUS ta%kailak

2.1 MAXIMUM FREQUENCY 50.62 Hz. AT 13:04:00 Hrs. ON 21.09.2013AiQaktma AavaRi%t

2.2 MINIMUM FREQUENCY 49.21 Hz. AT 19:19:00 Hrs. ON 04.09.2013nyaUnatma AavaRi%t

3. %AGE OF TIME WHEN FREQUENCY WAS SEPTEMBER 2013 AUGUST 2013 JULY 2013

AavaRi%t ka samaya p`itSat maoM

3.1 BELOW 48.5 Hz. 0.00 0.00 0.00 48.5 hT\ja ko naIcao3.2 BETWEEN 48.5 Hz. AND 48.8 Hz. 0.00 0.00 0.00 48.5 hT\ja AaOr 48.8 hT\ja ko baIca3.3 BETWEEN 48.8 Hz. AND 49.2 Hz. 0.00 0.00 0.01 48.8 hT\ja AaOr 49.2 hT\ja ko baIca3.4 BETWEEN 49.2 Hz. AND 49.5 Hz. 0.16 0.12 0.03

49.2 hT\ja AaOr 49.5 hT\ja ko baIca3.5 BETWEEN 49.5 Hz. AND 49.7 Hz. 1.35 0.60 0.46 49.5 hT\ja AaOr 49.7 hT\ja ko baIca3.6 BETWEEN 49.7 Hz. AND 50.2 Hz. 89.24 75.17 84.74 49.7 hT\ja AaOr 50.2 hT\ja ko baIca3.7 BETWEEN 50.2 Hz. AND 51 Hz. 9.25 24.11 14.76

50.2 hT\ja AaOr 50.3 hT\ja ko baIca0.00 0.00 0.00 0.00

50.3 hT\ja AaOr 51.0 hT\ja ko baIca3.8 BETWEEN 51.0 Hz. AND 51.5 Hz. 0.00 0.00 0.00

51.0 hT\ja AaOr 51.5 hT\ja ko baIca3.9 ABOVE 51.5 Hz. 0.00 0.00 0.00

51.5 hT\ja ko }pr

4.1 NO. OF TIMES FREQUENCY 0 0 0 TOUCHED 48.80 Hz. AavaRi%t 48.80 hT\ja kao CUhI



maoM AavaRi%t ko AaMkD,aoM ka ivavarNa

FREQUENCY PARTICULARS DURING SEPTEMBER 2013

(AS PER FREQUENCY REPORT OF WRLDC)

(piScama xao~ Baar p`oYaNa kond` kI AavaRi%t irpaoT- ko AaQaar pr )

Voltage Profile during the month of Sep. 2013

Date

Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv

1 424 414 426 411 437 411 431 406 419 410 417 407 428 420 417 395

2 421 409 423 409 436 410 430 394 416 400 414 403 425 414 415 394

3 422 408 427 410 435 398 432 393 416 403 416 404 426 416 417 398

4 423 411 426 414 435 407 431 398 416 403 417 406 426 418 415 398

5 424 413 426 414 436 409 434 405 417 407 418 408 424 413 415 398

6 423 411 425 411 436 428 430 401 417 403 418 404 423 411 415 397

7 421 409 423 410 433 426 434 402 418 404 417 405 423 412 414 395

8 420 409 420 410 433 426 433 400 417 407 418 411 422 411 417 395

9 420 407 422 407 433 417 430 403 418 404 418 408 423 412 411 391

10 421 407 423 409 433 417 433 404 416 402 417 405 424 415 413 384

11 420 406 419 395 439 427 432 405 417 402 419 404 425 414 418 390

12 420 408 419 406 439 417 433 401 417 411 420 412 424 412 419 398

13 422 409 421 406 440 415 431 405 418 409 420 413 421 409 419 403

14 422 410 419 406 440 415 433 406 416 404 414 403 421 410 418 402

15 423 411 423 410 440 417 434 411 416 407 415 408 421 409 420 405

16 423 404 419 402 440 421 439 410 417 403 414 401 423 410 417 403

17 424 410 421 407 440 419 440 415 418 407 417 408 425 414 419 405

18 422 408 419 405 440 420 434 408 420 406 418 405 423 414 418 403

19 418 397 416 396 440 413 434 402 417 397 419 401 422 410 416 400

20 423 400 422 407 439 400 434 400 421 408 425 411 423 400 420 400

21 426 410 424 410 440 416 435 409 418 409 420 407 428 418 419 402

22 424 414 424 413 439 419 433 411 420 409 418 410 431 420 421 405

23 424 413 424 410 440 418 436 408 420 406 418 405 431 418 422 405

24 426 414 424 413 439 416 434 411 421 407 418 406 429 419 423 406

25 427 416 425 413 440 417 438 411 423 410 419 409 428 418 424 407

26 426 409 425 407 440 416 437 408 421 398 420 401 428 414 424 404

27 426 409 424 407 439 416 435 407 418 398 416 402 427 416 423 404

28 425 409 423 406 439 411 435 406 418 403 424 406 427 416 426 402

29 427 413 423 411 440 416 435 406 419 403 423 403 427 419 421 399

30 424 409 423 411 440 420 434 408 416 401 416 401 427 420 419 401

427 397 427 395 440 398 440 393 423 397 425 401 431 400 426 384

ANNEXURE - 2.3

Indore Itarsi Karad Dhule Asoj Kasor Bhilai Jetpur

Date

Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv

1 424 401 418 405 423 413 429 414 762 751 792 778 797 773 793 770

2 422 406 418 399 421 406 430 402 758 744 787 771 795 761 792 755

3 424 406 411 399 421 406 429 410 758 744 790 765 786 759 795 755

4 421 408 411 400 423 409 428 410 757 745 786 764 784 762 788 758

5 424 412 413 401 424 413 428 414 763 745 789 774 788 764 784 764

6 420 409 416 401 423 410 428 410 758 744 784 765 792 764 782 763

7 418 406 411 400 421 409 429 407 753 741 779 761 783 760 773 754

8 412 405 408 398 420 409 427 411 755 740 777 760 779 759 769 756

9 415 406 409 399 422 406 428 410 755 740 780 764 781 759 769 755

10 417 405 413 400 422 406 430 411 756 745 787 766 788 763 765 755

11 418 407 412 401 420 406 427 410 755 739 784 760 786 768 797 767

12 413 406 413 400 421 407 427 405 756 744 785 766 789 763 780 765

13 412 403 410 400 423 410 430 411 757 740 782 765 781 763 779 764

14 412 403 412 395 424 411 428 411 757 741 783 759 783 757 778 757

15 418 405 417 402 426 413 432 416 761 739 791 768 801 768 793 759

16 418 405 417 402 424 403 429 407 759 741 791 768 801 768 793 759

17 417 405 417 403 424 410 432 414 758 743 787 764 795 769 789 765

18 416 403 412 387 423 407 426 407 755 741 780 763 794 758 786 763

19 414 399 411 397 420 399 423 398 755 739 778 749 784 758 786 756

20 421 405 417 402 424 400 431 400 765 745 789 767 796 767 801 768

21 426 407 418 407 424 409 431 410 762 751 792 772 799 776 797 771

22 418 401 421 399 424 414 428 417 766 749 799 775 800 760 795 759

23 418 405 414 399 424 412 430 410 764 752 794 770 789 759 791 754

24 418 410 415 403 426 412 423 411 763 755 791 781 791 770 793 774

25 417 406 413 401 428 416 427 414 763 755 796 778 791 765 794 764

26 418 403 419 404 426 408 427 409 767 749 798 774 799 770 794 768

27 420 406 416 400 425 408 428 410 768 751 799 755 796 961 795 769

28 415 400 418 399 424 408 427 407 764 751 792 770 798 762 793 759

29 421 408 417 407 425 412 430 409 765 756 798 778 794 778 802 771

30 419 407 418 399 425 411 429 417 768 755 798 779 796 767 794 771

426 399 421 387 428 399 432 398 768 739 799 749 801 757 802 754

seoni Gwalior BinaBina Gwalior Nagda Khandwa Sipat

प म े ऽय भार ूेषण कि, मु बई ूणाली ूचालन-ISO-I

संल नकAnnex-2.6 पावर िसःटम ऑपरेशन कारपोरेशन िलिमटेड

(पावरिमड क एक पूण ःवािम व वाली कंपनी)

प म े ऽय भार ूेषण के ि,मु बई Power System Operation Corporation Ltd. (A wholly owned subsidiary company of POWERGRID)

Western Regional Load DespatchCentre,Mumbai

अिनवाय युिनट आऊटेज का िसत बर2013का वःता रत यौरा Details of forced unit outages during the month ofSep.2013

अन ुबमांक Sl.No

यिुनट Unit

सघंटक Constituent/IPP

मता मेगावॉटCap.MW

स o From

समय दनांक

स o From

समय दनांक

कारण Reason

Time Date Time Date

1. यूट पीएस UTPS-4

गुजरात Gujarat 210 15:48 28-Aug-13 10:21 6-Sep-13 BTL

2. एपीएलAPL-6 गुजरात Gujarat 660 7:52 4-Sep-13 15:36 7-Sep-13 SPS operated

3. एपीएल APL-2

गुजरात Gujarat 330 1:22 9-Sep-13 7:54 25-Sep-13 Hydrogen leakage

4. सुजन Sugen 1

गुजरात Gujarat 382.5 1:01 10-Sep-13 अनपुल ध Still out

अनपुल ध Still out

Low demand

5. एपीएल APL-6

गुजरात Gujarat 660 21:47 11-Sep-13 19:38 18-Sep-13 Condenser tube leakage 6. उकई

Ukai-6 गुजरात Gujarat 500 2:00 13-Sep-13 14:35 16-Sep-13 BTL

7. एसएलपीपी SLPP-4

गुजरात Gujarat 125 12:00 23-Sep-13 08:00 hrs 28.09.13 BTL

8. डब यटू पीएस WTPS-1

गुजरात Gujarat 210 23:03 30-Sep-13 15:13 3-Oct-13 Condenser tube leakage 9. आरजीपीपीएल

RGPPL-3B महारा

Maharashtra 320 21:58 28-May-13 Ready Ready No requisition

10. आरजीपीपीएल RGPPL-2A

महारा Maharashtra

350 9:10 6-Jun-13 Ready Ready No requisition




12. आरजीपीपीएल RGPPL-1B






14. टाटा TATA-6


500 23:52 19-Jul-13 अनपुल ध Still out


For Economy S/D

15. आरजीपीपीएल RGPPL-2B


230 15:03 8-Aug-13 Ready Ready No requisition

16. एपीएमएल APML - 3


660 23:07 28-Aug-13 NA 10-Sep-13 Turbine vibration high


17. चंिपरु Chandrapur-3


210 09:38 31-Aug-13 12:58 04-Sep-13 BTL

18. खापरखेड़ा K'kheda-2


210 21:01 3-Sep-13 17:21 12-Sep-13 Coal bunkering

19. भुसावल Bhusawal-2


210 10:06 5-Sep-13 20:46 8-Sep-13 ID fan problem

20. कोराड Koradi-5



21. जयगड Jaigad-2


300 0:01 7-Sep-13 20:51 02.10.13 No schedule



660 7:30 10-Sep-13 9:37 1-Oct-13 BTL



210 13:25 13-Sep-13 15:45 16-Sep-13 BTL

24. भुसावल Bhusawal-2



25. नािसक Nasik-3


210 7:30 18-Sep-13 20:15 23-Sep-13 Bus section CT failure

26. खापरखेड़ा K'kheda-2


210 6:38 19-Sep-13 12:13 23-Sep-13 Flame failure



200 12:08 22-Sep-13 22:23 26-Sep-13 Furnace pressure high



200 1:27 29-Sep-13 23:21 13.10.13 ID fan problem



210 1:40 30-Sep-13 11:07 2-Oct-13 BTL



660 7:39 30-Sep-13 14:52 7-Oct-13 BTL

31. सातपुरा Satpura-10

म य ूदेश MadhyaPradesh

500 23:25 21-Aug-13 1:38 20-Sep-13 BTL

32. एसजीट पीएस SGPT-4

म य ूदेश MadhyaPradesh

210 9:59 21-Sep-13 1200 26.09.13 BTL

33. कोरबापूव Korba(E) Extn-1

छतीसगढ Chhattisgarh

250 23:05 10-Feb-13 20:25 7-Oct-13 Turbine problem

34. कोरबा प म Korba (W)-5

छ ीसगड Chhattisgarh

500 15:25 7-Sep-13 15:52 12-Sep-13 DC failure

35. एसीबीआईएल ACBIL-1

एसीबीआईएल ACBIL

135 0:30 4-Sep-13 NA 8-Sep-13 Main steam temp low

36. एसीबीआईएल ACBIL-2

एसीबीआईएल ACBIL

135 10:42 21-Sep-13 21:01 24-Sep-13 BTL

37. लॅ को Lanco-2

लॅ को Lanco

300 12:20 21-Aug-13 अनपुल ध Still out


Coal shortage

38. टॅ स TAPS-4

एनपीसी NPC

540 1:17 7-Sep-13 5:27 2-Oct-13 Maintenance

39. एःसार

महानEssar Mahan-I

एःसारEssar 600 16:53 10-Sep-13 22:12 13-Sep-13 Loss of flame


40. एःसार

महानEssar Mahan-I

एःसारEssar 600 0:01 26-Sep-13 23:13 7-Oct-13 Less requisition

41. ससान Sasan-3

ससानSasan 660 10:18 12-sep-13 14:45 19-sep-13 Convertor belt problem 42. ससान

Sasan ससानSasan 660 10:30 21-Sep-13 1:25 24-Sep-13 Flame failure

43. सीजीपीएल CGPL-50

सीजीपीएल CGPL

830 8:21 16-Sep-13 14:48 23-Sep-13 BTL

44. केएसके महानद KSK Mahanadi-3

केएसकेKSK 660 16:56 13-sep-13 19:37 23-Sep-13 Drum level low

45. वंदना Vandana-1

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