agenda for special meeting with kptcl on … for special meeting with kptcl on pending issues 1. low...
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AGENDA FOR SPECIAL MEETING WITH KPTCL ON PENDING ISSUES
1. LOW VOLTAGES
A meeting with SLDCs/system study groups to discuss the low voltage and an ATC/TTC issue was
held at SRPC on 26.04.2016 and many recommendations/action points had been finalized. The
minutes of the Meeting are available at SRPC website. The following were highlighted:
Physical Regulatory Procedure as enumerated 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.
2. UV RELAYS
In the Special Meeting held on 26.04.20116, KPTCL had informed that the UV relay scheme had not
been implemented. The following locations and logics for UVR had been finalized the meeting:
KPTCL: (@ Nelamangala, Somanahalli, Hoody and Bidadi)
Stage 1: When voltage < 380 kV for 10 minutes then the identified loads has to be
disconnected.
Stage 2: When voltage < 370 kV for 5 minutes then at least 25% of additional ICT load has
to be disconnected. In 120
th OCCM, KPTCL had informed that only for 25 MW automated scheme had been
implemented. Subsequently through manual action the voltages were being controlled.
3. SHUNT CAPACITORS REQUIREMENT
In the Special Meeting held on 26.04.2016, based on SRLDC Study the following Capacitor
requirement had been arrived as given below:
Sub-Station Capacitor – Requirement in
MVAR
Constituent wise
requirement
Nelamangala 160 Karnataka-505 MVAR
Hoody 185
Somanahalli 160
4. REACTOR STATUS
5. REACTIVE POWER PLANNING
In the 4th NPC meeting held on 10.12.2015 (MoM dated 01.01.2016), the following had been noted:
All States to carry out reactive power planning not only at transmission level but also at
distribution level and prepare schemes to maintain voltage profile as per relevant
Regulations / Standards.
NPC 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. It
was decided that RPCs would follow up the matter further with the states.
Utility Reactive power Planning Voltage
Level
Remarks
Karnataka Bengaluru Tr. Zone:708.8 MVAR
Bagalkot Tr. Zone :258.1 MVAR
Hassan Tr. Zone :136.3 MVAR
Mysore Tr. Zone :60.9 MVAR
Gulbarga Tr. Zone :98.60 MVAR
Tumkur Tr. Zone :281.3 MVAR
Total of 1544 MVAR which were
planned to be implemented new
PO is placed. Bangalore zone
had been retendered.
Entity Bus Name Status REMARKS
KPTCL
Hoody By October 2016 As identified in the 22nd
Standing Committee Meeting on Power System Planning of SR and as approved in the 4
th SRPC Meeting
held on 7thJune 2007
Nelamangala
By June 2016
Davangere
125 MVAR 39
th SC
Talguppa
125 MVAR 39
th SC
6. SCADA/COMMUNICATION
6.1. OPGW stringing works on the following KPTCL lines was pending to be completed:
Hoody - LILO point of Hoody – Nelmangala
Hoody – HSR
Hoody – HAL
NRS – Peenya- Hebbal
Hasan – Shantigram
MS, SRPC letter dated 13.06.2016 to MD, KPTCL is at Annexure.
6.2. VC facility from SLDC to SRLDC
7. AUTO RECLOSE
Chikkodi- Mudshingi/Talangde 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.
8. UFR & DF/DT RELIEF
For the period 16.05.2016 to 31.05.2016 the following was the relief available vs relief expected:
Expected Relief
as per SRPC
Monitoring Relief Max Min Avg
3539 3557 3090 1491 2454
87 % 42 % 69 %
9. OUTAGE COORDINATION
As per the outage procedure, utilities are to submit the S/D proposals for the subsequent month by
3rd
of the current month. Non-availing the OCC approved shut down was a matter of concern.
10. TRANSFER CAPABILITY DETERMINATION BY STATES
As per 4th NPC Meeting, all states were required to compute monthly ATC/TTC limits for their control
area. Monthly TTC/ATC would be uploaded by SLDCs in their respective websites and also
communicated to concerned RLDC & NLDC subsequently. A workshop was conducted on ATC/TTC
computations was held on31st March and 1
st April 2016. However, no official from KPTCL, LD had
attended. Dedicated Reliability Group (Study Group) at SLDC was very much required.
11. REASONS FOR DEMAND -SUPPLY GAP AND ITS VARIATION
This issue of furnishing the load shedding details in different heads along with the reasons by states
had been taken up in the NPC Meetings. MoP/CEA specifically needed the reasons for load shedding
like transmission constraints, distribution constraints, regulatory constraints viz the power purchase
not allowed beyond an agreed cost or quantum, natural calamities, tripping of some of major
transmission lines etc.
12. PATROLLING / MAINTENANCE OF CRITICAL LINES AND SUBSTATIONS
In recent times insulator tracking has been observed in the Transmission lines and Substations
located in the coastal and polluted areas. It is pertinent that the Patrolling and Maintenance needs to
be carried out for the critical lines as per the Patrolling Guidelines. It is also imperative that the
switchyards of the generators located in coastal areas need to be maintained stringently. SRPC vide
letter dated 05.05.2016 had communicated to the concerned in this regard. The following lines
require special attention and patrolling and maintenance schedule/carried out needs to be furnished
regularly:
400 kV Kaiga-Guttur D/C
400 kV Guttur-JSWEL S/C
400 KV Guttur-HiriyurS/C
400 kV Hiriyur- Nelmanagala
400 kV BTPS- JSWEL S/C
400 kV RTPS-BTPS S/C
400 kV UPClL-Hassan D/C
220 kV Nagjhari- Kodasalli D/C
220 kV Nagjhari- Ambewadi D/C
220 kV Nagjhari- Hubli D/C
220 kV Nagjhari- Bidna/Hublil D/C
220 kV Kadakola-Kanianmpetta S/C
13. RESTRICTED GOVERNOR MODE OF OPERATION (RGMO)/FGMO OF GENERATING UNITS
13.1 RGMO response was being analyzed in the OCC meetings and inadequate response was an
area of concern and there was no noticeable improvement. 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).
13.2 RLDCs/SLDCs have inherent powers to restrict the schedule corresponding to 100% if installed
capacity without vide valve open condition even at part loads ensuring primary governor response
at all stages. It was reiterated that unit should not be scheduled beyond 100% of MCR rating. In
view of CERC Order w.r.t Petition No.302/MP/2013, SLDCs need to restrict the state generators
schedule suitably.
14. LOW VOLTAGE RIDE THROUGH (LVRT)/PROVISIONS OF CEA REGULATIONS IN RESPECT OF
RENEWABLES
The 3rd
meeting was scheduled for 5th July 2016 in Chennai. Nodal officer nomination was
pending from SLDC. The information sought as per Format A & B has not been furnished.
There was on reported update on the other issues also.
15. DEMAND ESTIMATION FOR OPERATIONAL PURPOSE (CLAUSE 5.3 OF IEGC)
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. It was required for
Ancillary Services, RSD/TM schedules etc also.
16. SPS LOADS FOR KKNPP UNIT II
174 MW of loads to be identified and implemented.
17. INSTANTANEOUS SCHEME FOR SUDDEN WITHDRAWAL OF WIND
Like Tamil Nadu, KPTCL also needs to firm up a scheme for sudden withdrawal of Wind generation.
18. PHASE-I & PHASE-II ACTIVITIES IDENTIFIED IN PROTECTION AUDIT
Phase- I& Phase-II activities identified in Protection Audit need to be completed in a time bound
manner. As per Order dated 18.08.2015 on Petition No. 374/MP/2014 extension upto 15.01.2016
had been allowed. 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.
19. UPDATE ON ACTIONABLE POINTS IN RESPECT OF BMRCL
To expedite on the actionable points of KPTCL/BMRCL which were finalized in the special meeting.
Report of BMRCL on 17th & 21
st December 2015 incidents
Relays and settings at BMRCL needed to be reviewed, tested and verified Welcast SS connectivity to Yelhanka SS Mock Blackstart Exercise at BMRCL and through KPTCL -quarterly
20. OVERLOADING OF THE TRANSMISSION ELEMENTS
Line loading on 400 kV Gooty – Nelamangala, Gooty –Somanahalli & Hiriyur-Nelamangala lines
had gone very high failing to satisfy N-1 criteria
N-1 violation of Mysore ICTs
Rectification of Hoody ICT and maintenance of healthy spares.
21. ISSUES TO BE TAKEN UP WITH SERC
21.1. Roadmap to Operationalise Reserves in the Country
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 31st
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.
21.2. Framework on Scheduling and Imbalance Handling for Variable Renewable Energy Sources (Wind and Solar)
21.3. Compliance of the Central Electricity Authority (Technical Standards for Grid Connectivity) (Amendment) Regulations, 2013 by new generating units being commissioned and getting connected to the grid.
Para 63 of Order in Petition No. 420/MP/2014 66
63. As the Central Electricity Authority (Technical Standards for Grid Connectivity) (Amendment) Regulations, 2013 is applicable for wind generating stations and generating stations using inverters and are connecting at voltage level 66 kV and above to the grid after 15.4.2014. Therefore, all the wind generating stations are directed to comply with the provisions of CEA Technical Standards for Connectivity Regulations. We further direct 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.
22. UPCOMING TRANSMISSION SYSTEM
Sl.
No
Name of
Transmission
Element
Exe.
Agency Sch. CoD Expected
date
Remarks
1 400 kV Tumkur-
Yelahanka D/C line
PGCIL June 2014 Severe RoW problem.
400 kV Yelahanka S/S is
ready.
2 LILO of 400 kV
Nelamangala –
Hoody at Yelahanka
PGCIL Severe RoW problem.
400 kV Yelahanka S/S is
ready.
3 400 kV Somanahalli –
Dharmapuri D/C
PGCIL 2 months
once ROW
issues are
resolved
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.
Hon’ble Power Minister of
Karnataka was scheduled
to make a site visit shortly
to look into compensation
issues etc
3 220 kV Yelahanka
PG- Yelahanka Cable
KPTCL Max Jan
2017
6/7 months’ time (5 kM)
once the award was in
place (max 10 Months)
4 400/220 kV Yelahanka S/S – 220 kV BIAL S/S D/C
KPTCL
5 220 kV Tumkur –
Antharasana Halli
D/C
KPTCL July 2016 Tenders had been placed
on 18.03.2015 and it
would take 18 months for
completion
6 400 kV Tumkur S/S –
220 kV Tumkur S/S
D/C
KPTCL October
2016
Tenders had been
placed on 18.03.2015 and
it would take 18 months
for completion
23. Transmission system of KPTCL for evacuation of power from Yermarus TPS (2x800 MW)
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)
Gulbarga 400/220 kV substation
KPTCL 2x500 New Scheme in place of old one is approved in 56
th
TCCM meeting held on30.11.2013. Land is in possession of KPTCL. Preliminary survey work of 400 kV line is completed. Estimate to be prepared
Yermarus TPS - Gulbarga 400 kV D/C line (QM)
KPTCL Estimate to be 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
Land Acquisition is under process. In 39
th SCPSPSR a
step down SS with 2 x 500 MVA, 400/220 kV ICTs was agreed.
LILO of both the circuits of Nelamangala – Talaguppa 400 kV lines to the proposed pooling station near CN Halli.
KPTCL CN Halli land identified near the intersection point of all the proposed lines.
Termination of 400 kV D/C line feeding 400/220 KV station at Hassan from Nelamangala – Talaguppa 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 awarded in October 2015.
24. TRANSMISSION SYSTEM ASSOCIATED FOR TUMKUR ULTRA MEGA SOLAR PARK(2000 MW)
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
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 (Kelagina Kanavi): (43.018 Kms)
KPTCL Under Execution by KECIL
By Kalpataru
PTL
380 22-Dec-16 29
th SRPC
March 2017 24-Apr-17 29
th SRPC
March 2017
Out of 498 locations, 421 excavations over, 418 stubs concreted, 368 towers erected & 100 km stringing completed Out of 125 locations, 82 excavations over & 75 stubs concreted
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.
De-link 400 kV S/C line running between RTPS-BTPS-JSW-Guttur with JSW Bus
KPTCL
Agreed in 39th SCPSPSR
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.
Additional JSW TPS – Bellary Pooling Station 400 kV D/C line with quad moose conductor
Agreed in 39th SCPSPSR
400 kV BTPS-Guttur D/C line (QM)
Agreed in 39th SCPSPSR
Transmission Elements Line Length
(ckm)/ MVA
Capacity
Impleme
nting
Agency
Sch COD Ant COD/
Act COD
Constraints/ Remarks
Phase-I : Transmission system for Tumkur Ultra Mega Solar Park (1000 MW) April 2017
400/220 KV Tumkur PS
Bus Reactor
3 x 500 MVA
1 x 125 MVAR
LILO of 400kV Gooty –
Tumkur (Vasantnarsapur)
D/C at Tumkur
(Pavagada) PS
5
400 kV Tumkur P S -
Hiriyur D/C
110 For 400kV Tumkur –
Mysore line section
routed via Hiryur S/s
LILO of 400kV Bellary
Pool – Tumkur
(Vasantnarsapur) D/C
(Quad)(both
circuits)[KPTCL line] at
Tumkur (Pavagada)
Pooling station*
*KPTCL would complete
Bellary pooling station –
Tumkur (Vasantnarsapur)
line D/c (Quad) by
December- 2016
Phase-II : Transmission system for Tumkur Ultra Mega Solar Park (1000 MW) Sep 2017
Augmentation of
400/220KV Tumkur PS
2nd
Bus Reactor
2 x 500 MVA
1 x 125 MVAR
Hiriyur–Mysore 400 kV
D/C line
Switchable Line Reactor
at Mysore
190
1 x 80 MVAR
Tumkur PS – Mysore –
De LILOed at Hiriyur
400 kV Tumkur PS-
Devanhally (KPTCL) D/C
(Quad)
125 KPTCL would complete
establishment of 400/220
kV substation at
Devanahally including
inter-linking 400 kV and
220 kV lines before
Phase-II at Ultra Mega
Solar Power Park.
Third 400/220 kVMVA
transformer at Tumkur
(Vasantnarsapur)
1 x 500 MVA
****************************