1 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
Southern Regional Power Committee Bengaluru
Agenda notes for 123rd
Meeting of the Operation Coordination Committee of SRPC to be held at Kodaikanal on 9
th September 2016
1. Confirmation of the Minutes of the 122
nd Meeting of OCC held at Hyderabad on 08
th August 2016.
2. Monthly/Annual Outage Plan 2.1 ISGS/CGS: Generating Units
a) Shut Down Proposals for September/October 2016
b) Shut Down carried out during August 2016 along with reason for deviation, if any.
c) Rescheduling of TPCIL (2 x 660) MW Unit–I Annual Shut Down Annual Shutdown for TPCIL Unit I was planned in the month of July 2016. In the 121
st OCC
Meeting it was noted that shutdown may be approved from 22.08.2016 to 08.09.2016 subject to concurrence from AP and Telangana. TPCIL vide letter dated 21.08.2016(Annexure-2A) informed that TPCIL had sought approval from AP and TS SLDCs. TSSLDC had requested TPCIL to defer the shut down in view of increased power demand in the coming months on account of irrigation load for kharif crop. It is proposed to avail the Annual Shut Down of TPCIL Unit –I in the month of December 2016. All the works requiring TPCIL power transmission line outage will also be completed during the same time.
2.2 ISTS/State Sector Transmission Elements
a) As per the NLDC outage procedure constituents to furnish the outage proposals for subsequent month by 3
rd of current month which would be posted on SRPC website by 5
th of
current month. The outage proposals shall be furnished in the specified format in Excel format through E-mail to the following address.
b) Non-availing the OCC approved shut downs In earlier OCC Meetings SRPC/SRLDC had stated that in spite of huge efforts being put into finalizing the shutdown approvals, non-availing of the same (greater than 50%) was a matter of grim concern. Power purchase by the states was also being planned based on these approved outages and any changes affect their LGB and in some cases ATC/TTC was also getting affected. It was agreed that SRLDC would post the approved outages availed and non-availed by 3
rd of every month. Subsequently constituents should revert
back with the reasons for non-availing the shut down by 6th of every month.
SRLDC to post the approved outages availed and non-availed States/Utilities to revert back with the reasons for non-availing.
c) SR I, PGCIL had furnished consolidated list of OCC approved shut down Availed VS Non availed status during March 2016 to July 2016 which is at Annexure-2B
In 120
th OCCM, SRLDC had demonstrated the web based outage coordination system for
requisitioning the OCC approved outages on D-3 basis which is available at SRLDC website http://scheduling.srldc.org:8080/OCS/Account/Login.aspx. It was noted that the web based system is meant only OCC approved outages.
All Utilities are requested to use the same
SLDCs and RTAMC to kindly monitor the D-3/5 outages and ensure that
outages are taken as per approved schedule.
d) SRPC/SRLDC pointed out that the few constituents/utilities were not furnishing outage requests as per specified time schedule and current month proposals for AMP works were also being furnished. All the utilities were requested to follow the procedure and the time lines.
e) All the utilities to furnish the details/deviations with respect to the Annual Outage plan schedule Vs maintenance carried out on a monthly basis as this information is required for the Annual Outage Plan Deviation Report being submitted to CERC.
2 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
3. LGBR for upcoming five months 3.1 The following details to be furnished for discussion
Schedule of Hydro, Thermal Generation, RES, Purchases, anticipated consumption etc. Shortfall/Surplus, if any and how the same is proposed to be met. Arrangements to meet the Demand and Energy shortage for Sep’ 2016 to Jan’2017 Status review of Development of State of the Art load forecasting tools as per clause 5.4.2 of
IEGC. Loss of Generation due to fuel shortage- Action plan for meeting their demand and short fall
by constituents. The coal shortage issue and sharing of coal availability as per the CERC order dated
23.07.2013. Load Generation Balance in real time. Status Review of ATC/TTC calculation by SLDCs.
3.2 LGBR for upcoming five months-TTC/ATC computations: All states were requested to furnish PSSE base case for January 2017.
In the Special Meeting held on 26.04.2016, the following were deliberated: All SLDCs were requested to submit converged PSSE base case to SRLDC. As per the NPC decision/Congestion Procedure all the states were requested to publish
TCC/ATC in their respective websites.
All the SLDCs need to have a dedicated Study Group. Manpower issues need to be
addressed suitably by the Management.
Nominations from AP & TS for dedicated Study Group were awaited long back, though both
AP & TS had assured of nominations.
The following details to be updated:
5 months LGB
Converged PSSE Base case
ATC/TTC Computation furnished to SRLDC
ATC/TTC Computation posted on SLDC website
Nodal Officer Status
ATC/TTC Work shop
AP NO NO NO Date for work shop to be conducted is yet to be finalized.
TS NO NO NO 26th and 27
th July
2016
KAR NO NO NO 31st March 2016/1
st
April 2016
TN YES NO NO 12th/13
th May 2016
KER YES NO NO 12th/13
th May 2016
Pudu NO NO NO
APTRANSCO is requested to come up with a suitable date for ATC/TTC workshop at the
earliest. SRPC/SRLDC requested the states to take necessary action in this regard.
(Item No. 3 of enclosed SRLDC letter dated 29.08.2016).
4 Review of Power Supply Position /Inflows
Constituents/ Generators to furnish the reasons for deviation:
a) Actual with respect to anticipated (MW & MU) for availability and requirement. b) Generation variation category wise with respect to MoP targets/LGBR figures.
3 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
c) Inflows (MU) to major reservoirs: Actual w.r.t. 10 year moving average and w.r.t. same month last year.
d) Reasons for demand -supply gap and its variation The load shedding details in different heads along with the reasons needed to be furnished.
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.
5 Issues for deliberation 5.1 Presentations by States on Operational Issues
In the 122nd
OCC Meeting SRLDC had stated that they were preparing a template on OCC issues for enabling the focused deliberations. The template would be circulated within 15 days and all the entities individually would need to present the actions taken/being taken, progress on the issues etc from the next OCC meetings. SRLDC had forwarded the Template to all the concerned copy of which is at Annexure-5A
Constituents to come up with the presentation.
5.2 Charging of LILO section of 230 kV MAPS-Arni line at Echur S/s by TANTRANSCO- without prior concurrence from SRLDC
SRLDC vide letter dated 25.08.2016(Annexure-5B) had informed that 230 kV MAPS – Arni line was LILOed at Echur Substation by TANTRANSCO and new section had been charged on 08.08.2016 without prior concurrence from SRLDC or real time code from SRLDC Control Room. MAPS being an ISG Station prior intimation is required to be given to SRLDC about the network re-configuration and permission to charge the new section should have been obtained. The following are requested to be furnished by TANTRANSCO: The minutes of the Standing Committee Meeting approving the above Re-configuration. Extend the SCADA data provide necessary inputs for effect change in the respective
modules as above along with soft copy of the Single Line Diagram. Transmit the SEM data on a weekly basis to the following E-mail IDs
[email protected] [email protected]
SRLDC requested TANTRANSCO to kindly complete all the pre-requisite formalities as per the time lines specified in the Operating Procedures before charging the new element.
(Item No. 11 (e) of SRLDC agenda dated 29.08.2016) 5.3 Scheduling of infirm injection of KKNPP Unit 2
SRLDC vide letter dated 30.08.2016 (Annexure-5C) had submitted the following agenda for discussion in the 123
rd OCC Meeting.
KKNPP Unit -2 successfully synchronized on 29.08.2016 at 11:16 hours. For achieving full load and stabilization it may take three to four months. Discussion for scheduling infirm power prior to COD.
5.4 Inclusion of drawal of power for Mahe Region of Union Territory of Puducherry under REA In response to Puducheery’s request to include drawal of power for Mahe Region of Union Territory of Puducherry in REA, SRPC vide letter dated 08.07.2016 (Annexure-5D) had sought certain information/clarification from Puducherry. Puducheerry vide letter dated 23.08.2016(Annexure-5E) has replied for SRPC’s queries and requested SRPC to kindly arrange to review the details and obtain similar information from KSEB system so as to bring the drawal of power at Mahe Region under REA at the earliest.
5.5 Handling issues of low demand and facilitation of renewable generation absorption The issue of low demand and facilitation of renewable integration came up for discussion in the 30
th SRPC meetings held on 27.08.2016. Accordingly SRPC vide letter dated
29.08.2016(Annexure-5F) had invited attention of CEA in this regard and had requested CEA that with the objective of maximizing renewable energy absorption, the matter may kindly be arranged to be examined and necessary directions issued in this regard.
5.6 Forecast Vs Actual Demand of SR constituent
4 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
SRLDC vide letter dated 04.07.2016 had enclosed a copy of letter dated 28.06.2016 received
from NLDC/POSOCO highlighting that load forecasting in different time horizons
(daily/weekly/monthly/yearly basis) is an important input and a mandatory requirement for the
entire scheduling process and reliable operation of the power system. As per Section 5.3 of IEGC
demand estimation responsibility of SLDC/RLDC/NLDC is clearly identified. Details of action
required to be taken by SLDCs/RLDCs/NLDC were given.
The mean absolute error % (Forecasted VS Actual Demand) for the month of August 2016(till
24th) is at Annexure-5G
(Item No. 5(c) of SRLDC agenda dated 29.08.2016)
5.7 Frequent tripping of Vallur-NCTPS lines In the 122
nd OCC Meeting the following were noted:
It was noted that no trippings had been observed during July month. Insulator replacement for complete stretch of Vallur-NCTPs line had not been taken up by
TANTRANSCO. TANTRANSCO informed that they were planning for replacement of some insulators from Oct’2016 in coordination with PGCIL. TANTRANSCO was suggested to go for complete replacement.
For Gantry tower, SR-I, PGCIL had clarified that NTECL had to take up replacement. NTECL was suggested to take necessary steps.
TANTRANSCO/NTECL to update the status
Item No.14 (d) of enclosed SRLDC letter dated 29.08.2016)
5.8 Replacement of protection couplers at 220 kV substations In the 120
th OCC Meeting KSEBL had informed that the existing BPL make PLCC protection
couplers at 220 kV sub stations Edappon, Edamon, Kundara and Kayamkulam are very old and mal-operates frequently due to stray signals (generated from the panels) and to be replaced immediatelyand it was suggested that procurement can be done either by KSEBL or by NTPC/PGCIL. KSEBL had requested NTPC, Kayamkulam to intimate their willingness for procurement of Digital Protection Couplers at Edamon and Kayamkulam by KSEBL with the cost reimbursed by M/s.NTPC/PGCIL. PGCIL had informed to take up the matter in the joint meetings held at Regional level. KSEBL had requested NTPC/PGCIL to revert back. KSEBL had requested that one agency may take up the entire work.
PGCIL and NTPC are requested to look into it and revert back at the earliest.
5.9 Revival of Units at Sharavathi Generating Station: A major fire incident had occurred at Sharavathi Generating Station on 18.02.2016 at 16:43 hrs. It was noted that all the 10 units had come on bars. SGS- Shimoga 1, SGS- Talaguppa 1 & 3 and SGS- Balligave line were yet to be charged.
5.10 Maintenance of RTUs installed under ULDC Projects for Central Sector Generating Stations
5.10.1 PGCIL vide letter dated 25.07.2016 had requested all the concerned generating companies, utilities to take necessary action for maintenance/replacement of the existing RTUs installed in their respective Power Plants/Generating stations after the completion of useful life 15 years from DOCO to ensure continuous reporting of data to respective RLDCs.
5.10.2 In the 122nd
OCC Meeting after deliberations SRLDC had opined that it would be better if one single agency, PGCIL take up the maintenance of RTUs and requested all the SLDCs/CGS/ISGS to apprise their Managements in this regard. SRPC stated that all the SLDCs/entities could apprise their Higher Management and the issue would be put up to TCC. The issue could not be discussed in the TCC due to paucity of time
5.11 Progress of NLC TS II – TS I Expansion re-conductoring works- end span work SRLDC/SRPC had clarified that until unless the end portion is reconductored, the enhancement of capacity of the line would not be considered for any of the operational purposes and the very purpose of reconductoring as per CERC directions was not achieved. In the 122
nd OCC Meeting, PGCIL, SR-II agreed to carryout the works during November
/December 2016.
5 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
(Item No.14 (f) of enclosed SRLDC letter dated 29.08.2016)
5.12 Scheduling of NTPC Ramagundam Solar Power Plant(10 MW) 5.12.1 To facilitate scheduling by SRLDC the following prerequisite criteria was to be met by NTPC:
Forecasting of generation. MW-MVAR data of the station. Voltage at inter connecting point. Inverter status SEM as per CEA, Metering Regulations, 2006 Data compatibility with SRLDC format etc.
5.12.2 In the 122nd
OCC Meeting the following was noted: NTPC had informed that the actions were delayed since NTPC Management was
planning to approach TSTRANSCO and APTRANSCO for allocating full quota of 10 MW power to TSTRANSCO. However the data was sent to SRLDC with existing energy meters. They had approached M/s Kalki Technologies for provision of Protocol 101/104.
SRPC had pointed out that unallocated quota was linked with NTPC Ramagundam Solar and MoP would be required to be appraised if full quantum is taken by TS.
SRPC/SRLDC requested NTPC to complete the works and not link the two issues.
(Item No.11 (b) of enclosed SRLDC letter dated 29.08.2016)
5.13 Implementation of URTDSM (PMU) project in Southern Region It was noted that the revised schedule for completion of the project was Janury 2017. In the 122
nd OCC Meeting it was suggested that a separate Meeting may be conducted to
deliberate the issues regarding URTDSM in depth with the participation of M/s Alstom. Subsequently, a Meeting was conducted at SR II, Yelahaka, Bangalore on 23.08.2016. The minutes of the Meeting is available at SRPC web site.
In the meeting PGCIL had confirmed that training would be provided to all constituents & SRLDC on PMUs & Control Centre HW / SW training on SAT procedure before commencement of SAT. It was also agreed that in addition to providing exhaustive SAT procedure, training etc., PGCIL (LD & C) representative would also witness the complete SAT in any one location (say at SRLDC) wherein all constituents of the region could participate and get trained. Subsequently, individual constituent can take-up SAT independently in their locations.
5.14 Video Conferencing facility at SLDCs Status as furnished in 122
nd OCC Meeting:
AP KAR TN PUDU
Will provide the facility in new SLDC at Vijayawada by December 2016.Installation of SCADA at Vijayawada was under progress.
The needful for VC facility had been completed and VC would be in place within two days.
Technical bid had been opened on 3
rd
August 2016. Price bid is expected to be opened within one week.
Puducherry had informed that Budget for 2016-17 had not been approved yet. GM, SRLDC assured that he would take up with Puducherry Higher Management.
(Item No. 4(a) of enclosed SRLDC letter dated 29.08.2016)
5.15 Patrolling / Maintenance of critical lines and substations 5.15.1 In recent times insulator tracking has been observed in the Transmission lines and
Substations located in the coastal and polluted areas. The format for furnishing the details of schedule / Patrolling and Maintenance carried out of the critical Transmission lines and Substations had been circulated. It was requested to furnish the necessary details in the specified format by 18.5.2016 positively.
5.15.2 It was noted that MEPL, SEPL, NTPC Simhadri (not in format), APTRANSCO & KSEBL had furnished the details. KPTCL was requested to do the patrolling on an urgent basis and was requested to furnish the requisite information.
6 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
5.15.3 Subsequently KPTCL had furnished the details which are at Annexure-5H. It was noted that details of only Kadakola-Kaniyampet line furnished.
Other entities are requested to furnish the details regularly/urgently.
5.16 Non reporting of various 110 kV SS data of Puducherry ED to Pondy SCC/SRLDC 5.17 ED, Puducherry vide letter dated 26.08.2016(Annexure-5I) informed regarding the non reporting
of various 110 kV SS data of Puducherry ED to Pondy SCC/SRLDC. Mentioning the reasons for failure of communication and action to be taken to reestablish the data communication, PED requested that necessary instructions may be issued to the concerned to make the communication links with the SCC Pondy in order to establish the data communication and to ensure the grid compliance and load relief mechanism.
5.18 Neyveli TS I Expansion- ABT deviations in Ramp up/down NLC TS I expansion vide letter dated 24.08.2016(Annexure 5J) had requested to revise the Ramp up/down values on 24.08.2016 for some of the blocks.
5.19 RRAS-Ramp up/Ramp down rate discrepancy in FORM AS3 furnished figures and values declared on daily basis in web scheduling Program
5.19.1 SRLDC vide E-mail dated 24.08.2016 (Annexure 5K) had informed regarding the mismatch observed wrt Ramp Up and Ramp Down rates of NLC TS-I, NLC TS-II, NTECL & VTPL in FORM AS3 furnished figures and values declared on daily basis in web scheduling Program. It is requested to take necessary actions as below:
All stations mentioned in the E-mail to submit the correct ramp up/down in scheduling programme & ancillary services AS3 matching with each other
NTPL ramp rate of 15MW/ Block/unit appears to be too low & may be revised in line with OEM norms & other ISGS
6 Grid Frequency:
6.1 High frequency
a) High frequency at Load Change Over. b) Status review of implementation of staggered load change over within the constituents as per
the decision of 23rd
SRPC meeting, moderating own generation, surrendering of ISGS power in advance and other actions by Regional Entities to avert high frequency excursion.
c) Pump Mode Operation of Nagarjunasagar/Srisailam LB / Kadamparai HEP units. It is observed that Kadamparai units are being operated in pump mode.
d) Procedure for operation of N’Sagar in pump mode. (Item No.5 (d) of enclosed SRLDC letter dated 29.08.2016).
6.2 Low Frequency
a) Summary statement of different violation messages issued by SRLDC to each constituent as per new IEGC Amendment.
b) Summary statement of Deviation & Zero-Crossing Violation messages issued by SRLDC to each regional entity as per new IEGC Amendment.
(Item No. 5(a) of enclosed SRLDC letter dated 29.08.2016)
7 Voltage Profile
7.1 Low Voltage 7.1.1 Low voltage at Somanahalli, Nelamangala, Bidadi, Hosur, etc.
7.1.2 Action to avert low voltage profile. Messages and letters issued by SRLDC. Details of Capacitors installed in August 2016. Details of the healthy/faulty capacitors to be furnished.
7.1.3 KPTCL to furnish the updated status of the following:
Issues with BESCOM
Retrofitting/Commissioning of 30 MVAR Capacitor banks at Hoody/Somanahalli.
Any other action taken to improve the voltage profile in and around Bangalore.
7 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
7.1.4 It was noted in the special Meeting held on 26.04.2016, that SRLDC had conducted a Study to ascertain requirement of capacitive compensation in low voltage areas of SR viz. Bengaluru area, Udumalpet-Arasur-Hosur-Salem area and Trichur-Palakkad area. From the studies, Capacitor requirement had been arrived as below:
7.1.5 UV Relay:
KSEBL: To be implemented at Trichur, Palakkad & Kochi
KSEBL vide letter dated 25.08.2016 (Annexure-7A) had furnished the details of implemented logic with feeders name and informed that mock testing has been conducted through SCADA for all the identified feeders on 09.08.2016. All the corresponding tripping relays for the configured feeders were found operational except for Mylatty substation, where the control card of the RTU
is found faulty. The replacement is under progress.
KPTCL: To be implemented at Nelamangala, Somanahalli, Hoody and Bidadi In the 122
nd OCC Meeting KPTCL had informed that Stage-I UVR scheme at Somanahalli was
made ready and would be implemented upon receipt of BESCOM’s approval. The feeders had been identified for implementation of UVR at Somanahalli (for Stage-II 100 MW), Hoody & Nelamangala as recommended and BESCOM Management approval was awaited. UVR at these places would be implemented by August 2016.
TANTRANSCO: To be implemented at Udumalpet, Salem & Hosur In the 122
nd OCC Meeting, UVR St-I had been implemented at Udumalpet. It was noted that UVR
St-I at Udumalpet is set at 5 minutes and to be changed to 10 minutes as recommended.TANTRANSCO had informed that feeders have been identified for UV Relay implementation at Hosur & Salem and were furnished to P & C wing of TANTRANSCO.
(Item No. 6 (a), (b) and (c) of enclosed SRLDC letter dated 29.08.2016)
7.2 High Voltage a) High voltage at Vijayawada, VTPS, Hyderabad, Nagarjuna Sagar, Gooty, Kurnool,
Malkaram, Hassan, Srisailam, Sattenapalli, Narendra, Almatty, Raichur, Mahaboobnagar, and 765 kV stations namely NPS, Thiruvalam and Kurnool stations.
b) Messages and Graphs. c) Status review of implementation of generator GT tap changes as per Special MVAR
Meetings and previous OCC Meetings. d) MVAR Capabilty testing of N’Sagar- date finalization.
(Item No.7 (a) & (c) of enclosed SRLDC letter dated 29.08.2016).
7.2.1 Condenser mode of operation of Nagarjuna Sagar and Srisalam LB
In the 122nd
OCC Meeting, the following were noted:
Sub-Station
Capacitor –
Requirement
in MVAR
Constituent
wise
requirement
Timeline Remarks/Action Taken
Nelamangala 160 Karnataka-
505 MVAR
By
Dec’2016
It was noted that 708.8 MVAR capacitors
were planned in Bengaluru Transmission
Zone. Hoody 185
Somanahalli 160
Mywadi 275 Tamil Nadu-
1025 MVAR
Status?
Arasur 330
Salem 210
Hosur 210
Palakkad 12 Kerala – 102
MVAR
KSEBL informed that they had studied
and finalized the Capacitor Requirement
as 360 MVAR. Trichur 90
8 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
TSTRANSCO/TSGENCO had agreed to put all the units of Srisailam LB in condenser mode during 2200 Hrs to 0500 Hrs( next day). It would take one and half hour to take all 6 units in condenser mode since units can be added with a gap of 15 minutes. SRLDC suggested that the voltage changes prior and after condenser mode of operation can be analyzed.
TSGENCO had informed that in case of Nagarjuna Sagar, 5 units out of 8 units can be run in condenser mode and all the 5 units can be run simultaneously.
TSTRANSCO was suggested to run the units proactively whenever the high voltages were prevailing without waiting for the SRLDC instructions.
7.2.2 Tap changes for the following units were pending:
Statio
n
Unit Present tap
and
corresponding
voltage(in kV)
Recommende
d Tap and
Correspondin
g Voltage(in
kV)
Remarks
ISTS connected Generators:
Kaiga
I
1 & 2 6 & 229.125 7 & 223.25 In the Special Meeting held on 19.05.2016 it was decided that NPCIL would expedite the procurement of 2x125 MVAR Bus Reactors simultaneously. Further suitable measures would be taken by Kaiga (U1 & U2) and Kaiga (U3 & U4) to ensure that no VAR injection takes place (from LV side) at voltages greater than 220 kV and 400 kV respectively. It was assured by Kaiga U3 & U4 for absorption upto 60 MVAR each from their Units. Kaiga Unit 1 & 2 also assured that absorption form their units would be as per the corresponding capability curve.
Kaiga
II
3 & 4 3 & 409.5 4 & 399
APGENCO/APSLDC
HNPCL 1 6 & 409.5 7 & 400 HNPCL vide letter dated 12.08.2016 had informed that Unit-1 would be changed to 7 (400 kV) during next opportunity.
IPPs of
AP
It is recommended that all IPPS under APSLDC could be advised to change their Tap
position corresponding to voltage level of 400 kV / 220 kV.
KPCL/KAR SLDC
Kadra All units 7 & 225.5 8 & 222.75
Kodasall
i
All units 7 & 225.5 8 & 222.75
Sharava
ti
9 2 & 231 4 & 220 KPCL had informed that tap could not be
changed due to technical problems.
UPCL 1 & 2 4 & 409.5 5 & 400 Observed rotor teeth temperature issues and
OEM was called. OEM expected during
June/July 2016.
2 x 125 MVAR reactors agreed in 39th
9 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
SCPSPSR
TANGEDCO/TN SLDC
Tuticorin
TPS
1,2,3,4 & 5 8 & 243 230 TN had informed that as per their study for
2016-17, it was suggested that all the generator taps of TTPS will be changed from the present position of tap no 8 to tap no 10 (15.75/237 kV).
SRPC/SRLDC had stated that the Tap positions had been would be reviewed as per the MVAR/voltage conditions.
MTPS
St.III
1 6 & 409.5 7 & 399 GT is provided with off load tap changer. Tap
will be changed to 7 after provision of bus
reactor at MTPS II in order to cope up with
voltage rise. The commissioning works of
reactor is under progress.
7.2.3 Tap optimization of ICTs in SR
SRLDC vide letter dated 19.05.2016 had taken up ICT Tap optimizations studies to suggest tap change action at 765/400 kV and 400/230-220 kV SS. However the optimization is effective only if it is done upto sub transmission level. To expand optimization study to this level SRLDC had requested 230/110 kV, 220/110 kV, 220/66 kV, 210/130 kV transformer technical data and voltage data from SCADA for peak and off peak scenario. In the 121
st OCC Meeting it was noted all other states except APTRANSCO. APTRANSCO had
informed that they had taken up the issue with all the DISCOMs and the information received
(except Kadapa zone) had been furnished to SRPC/SRLDC.
7.2.4 Status review of Bus/Line Reactors, Line Reactors and STATCOM As approved by Standing Committee meeting. Status of commissioning of Bus Reactors
(Item No.7 (b) of enclosed SRLDC letter dated 29.08.2016).
Entity Bus Name Status REMARKS
KPTCL
Hoody Reactor erected on
platform. September 2016
Nelamangala Reactor and bay
equipment installed.
Contractual issues with
BHEL wrt Reactor panel.
December 2016
Entity Bus Name
Capacit
y in
MVAR
Approved in Type Remarks
PGCIL
Vijayawada 2x125 20
th SRPC/ 34
th
SC Bus One bus reactor at
Vijayawada has been
commissioned. Other
reactors Nagarjuna
Sagar 125
21st SRPC/ 34
th
SC Bus
10 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
Narendra 125 21
st SRPC/ 34
th
SC Bus
Would be Commissioned
progressively from Sep 2016
to Dec 2016. Bays were
ready for all the reactors.
PGCIL SRII informed that as per the revised scheme, it was proposed only one 63 MVAR Reactor at Yelahanka against the 2 x 63 MVAR as approved in SCPSPSR. Pre-commissioning checks had been completed for one reactor. PGCIL SR-II was suggested to ratify the change in the Standing Committee.
Hyderabad 125 21st SRPC
Gooty 125 22
nd SRPC / 36
th
SC Bus
Hassan 125
36th SC
Bus
Khammam 125 Bus
Kudgi PG 125 Bus
Trivandrum 125 Bus
Nellore
(Existing) 125 Bus
Yelahanka 2x63 Bus
Nellore PS
on NPS-
Gooty Line
2 x 63
(37th
SC)
Line
Kudgi PG–
Tumkur
D/C at
each end
4 x 63 Line
Cuddapah 50 to
125 39
th SC
Thiruvalam
765 kV 2 x 240 39
th SC
SRLDC had requested
PGCIL to commission the
765 kV BRs on priority basis.
APTRANSCO
Vemagiri 125
36th SC
Bus
PO has been placed in the
month of June 2016 with a
delivery schedule of 18
months.
Kurnool 125 Bus
Kalpakka 125 Bus
Chittoor 125 39th SC
Vijayawada 125 39th SC
APTRANSCO/
APGENCO
VTPS
Stage IV 125 39
th SC
KPTCL Davangere 125 39th SC
KPTCL informed that action
11 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
7.2.5 The following was noted in the 122nd
OCC Meeting:
Talguppa 125 39th SC
would be initiated within a
week.
TANTRANSC
O
Almathy 125 39th SC
Kaythar 125 39th SC
TANTRANSC
O/
TANGEDCO
Mettur 125 39th SC
TN had informed that Mettur-
Tiruvalam line would be
LILOed at Palvadi in
Nov’2016 and opined that
BRs at Mettur may not be
required being short lines.
Palvadi SS was approved in
37th SCPSPSR and
subsequently in 39th
SCPSPSR, 125 MVAR BR
was approved. Hence TN to
take up accordingly.
TSTRANSCO
Mamidipalli 125
36th SC
Bus
LOI was ready and awaiting
PSDF funding. SRLDC had
assured that they would take
up with NLDC.
Gajwel 125 Bus
Sankarapal
li 125 Bus
Mehboob
Nagar 125 Bus
Malkaram 125 Bus
TSTRANSCO/
TSGENCO
Srisailam
LB 125
39th SC
TS informed that Technical
feasibility from CEA was
awaited. SRPC stated that
the reactor was approved in
39th SCPSPSR and TS
would take up accordingly.
NPCIL Kaiga 2 x 125
Bus
In the Meeting, Kaiga GS
informed that technical
specifications for both the
reactors had been prepared
and submitted to HQ.
Approval is expected by end
of Aug-2016.
UPCL Udupi 2 x 125
39th SC
Awaiting CERC clearance
for capitalization. UPCL was
suggested to file IA with
Hon’ble CERC.
12 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
Kudgi, NTPC Bus Reactor: NTPC had informed that commissioning works were under progress for the bus reactor and was expected to commission by end of August 2016.
All the constituents were requested to update the status of implementation of reactors on a monthly basis with OCC data.(State wise/ location wise / status of implementation like tender called, PO placed)
7.2.6 In the special meeting with NPCIL/BHAVINI held on 19.05.2016, the following were deliberated with respect to KKNPP reactors:
NPCIL had assured that they would take up the matter with CTU regarding finalization of reactive requirements, keeping in view no absorption by the Stage- II units. Limitation of 100-150 MVAR absorption for limited period but not on sustained basis would also be communicated.
In the 122
nd OCC Meeting, KKNPP informed that they would revert back on updated status.
7.2.7 NGR bypass of Reactors SR I and SR II were requested to submit the consolidated list of Reactors with the status of NGR
Bypass.
7.2.8 Reactive Power Planning: Utilities to furnish schemes relating to Reactive Power Planning including at distribution level. The time schedules for implementation would also be indicated.
Utility Reactive Power Planning Voltage
level
Remarks
APTRANSCO
32 x 7.2 MVAR 4 x 14.4 MVAR
On 33 kV
side
4 x 7.2 MVAR Capacitors installed
APEPDCL Srikakulam : 5 x 2 MVAR Vizianagaram : 2 x 2 MVAR Visakhapatnam: 5 x 2 MVAR Rajahmundry :10 x 2 MVAR Eluru : 4 x 2 MVAR
33/11 kV
Level
Updated status to be furnished
APSPDCL April 2015 : 11 x 2 MVAR
May 2015 : 16 x 2 MVAR
July 2015 : 1 x 2 MVAR
Aug 2015 : 2 x 2 MVAR
Sep 2015 : 2 x 2 MVAR
11 kV level Updated status to be furnished
TSNPDCL 123 x 2 MVAR 118 x 1 MVAR
72 x 2 MVAR and 57 x 1 MVAR capacitors had been installed.
TSSPDCL 221 x 2 MVAR 11 kV level 209 x 2 MVAR commissioned.
KPTCL Bengaluru Tr. Zone:708.8
MVAR
12.1 kV Retendered on 19.05.2016. Bids will be opened on 10.08.2016
Bagalkot Tr. Zone :258.1
MVAR
12.1 kV 39 Capacitor Bank supplied- to be erected. 35 nos/ 15 nos inspection raised/ to be raised.11 KV switchgear placed on M/s MEI – delivery from last week of July 2016
Hassan Tr. Zone :136.3
MVAR
12.1 kV 13 Capacitor Bank supplied- to be erected. 16 nos partially supplied. Balance 11 Nos to be supplied. 7 nos Capacitor cell installed. Foundation completed 22 nos.
13 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
Mysore Tr. Zone :60.9 MVAR
12.1 kV All 21 nos (2.9 MVAR) Capacitor Bank supplied. 11 KV switchgear placed on M/s MEI on 28.01.2016 18 Nos Capacitor Banks & 18 Nos DP Structure started
Gulbarga Tr. Zone :98.60
MVAR
12.1 kV 17 Nos (2.9 MVAR) Capacitor Bank supplied. 17 Nos to be supplied.
Tumkur Tr. Zone :281.3
MVAR
12.1 kV
KSEBL 15 MVAR 66 kV Have done reactive compensation study.360 MVAR is planned.
360 MVAR 11kV New proposal to be firmed up
TANGEDCO 34 x 2.4 MVAR 11 kV Materials received
36 x 2.4 MVAR 11 kV Additional – Administrative approval accorded
16 x 2.4 MVAR 22 kV 6 x 2.4 MVAR would be installed at Salem/Coimbatore by July 2016
51 x 2.4 MVAR 22 kV Additional – Administrative approval accorded
7 x 24 MAVR 110 kV Retendering.
931 MVAR of capacitors at distribution level had been commissioned out of 1,005 MVAR capacitors planned.
In the 4
th NPC meeting held on 10.12.2016, the following were the decisions/actionable points w.r.t.
Reactive Power Planning:
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.
8 Network Protection/Security issues: 8.1 AUFR, df/dt 8.1.1 Implementation of SRPC recommended quantum
In accordance with clause 9 (2) of CEA (Grid Standards) Regulations, 2010, all constituents shall submit a detailed report of operation of AUFR at different frequencies to SRLDC and SRPC on daily basis. It was noted that only KSEBL and PED were submitting the daily report regarding operation of relays.
8.1.2 SCADA mapping of feeders of AUFR & df/dt schemes:
The status is as follows:
State SCADA mapped %
Status
AP 42 Purchase Order has been placed for procurement of 25 RTUs on 31.07.2016. With the commissioning of these RTUs 70 % SCADA mapping would be achieved. For balance quantum, Higher Management was apprised.
14 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
TS 64 TSTRANSCO informed that 24 RTUs were to be procured for 100% SCADA mapping. Proposal has been put up for Management approval which is expected by August end.
TN 92 Additional RTUs needed to be procured for 100% SCADA mapping. TN was requested to initiate action to reach 100 % availability and revert back regarding the action taken within 7 days.
SR States to complete 100 % SCADA mapping of AUFR & df/dt relays by 31
st December 2015
as per CERC Order dated 27.11.2015 on Petition No. 60/MP/2014. A monthly report on the action taken to reach 100 % availability may be furnished to SRPC/SRLDC by States.
(Item No.8 (a) of enclosed SRLDC letter dated 29.08.2016).
8.2 Special Protection Schemes(SPS) 8.2.1 Implementation of additional loads for KKNPP SPS
It is noted that mock test was not conducted on 19th August 2016 as scheduled due to problems
at Somanahalli. It is decided that date for mock test would be finalized in the forthcoming PCSC Meeting scheduled to be conducted on 02.09.2016 at Hyderabad.
Status of loads identification/wiring and Mock exercise.
(Item No.8 (e) of enclosed SRLDC letter dated 29.08.2016).
8.2.2 SPS operations
SRLDC to furnish SPS operation details along-with relief obtained in each OCC for previous month.
Spurious action of Raichur-Sholapur SPS on 13th and 20
th August 2016. Measures to be
taken to avoid such operations. E-Mail dated 29th August 2016 from SRLDC to PGCIL is
at Annexure-8A SR II, PGCIL response on this issue communicated vide E-mail dated 30
th August 2016
enclosing letter dated 29.06.2016 is at Annexure-8B KSEBL vide letter dated 12.08.2016(Annexure-8C) has reported about the non receipt of
RSTS SPS signal at Kerala on 09.08.2016. It was informed by SRLDC that due to overloading of 765 kV Raichur-Sholapur feeders the RSTS signal transmitted from Kolar on 09.08.2016 at 07:07 hours. KSEBL informed that major alarms are persisting in the DTPCs installed at Madkkathara and Edappon and MUX problem at Pallom. It is requested by KSEBL that necessary direction may kindly be given to concern for rectifying the problem before commissioning of SPS for KKNPP Unit – 2. The signal transmission from Kolar to Madkkathara and Kolar to Kanhirode has to be tested in connection with the SPS for KKNPP Unit-2.
(Item No.8 (e) & (f) of enclosed SRLDC letter dated 29.08.2016).
8.2.3 Extension of SPS status points to SRLDC
In the 119th OCC Meeting, SRLDC had informed that SPS status points also needed to be
mapped /extended to SRLDC SCADA. The intent was to monitor from SRLDC SCADA that which
SPS operated, which feeders tripped etc.
In the 121st OCC Meeting the following were noted
PGCIL had intimated that technical analysis is required along with agency that had implemented or programmed the logic. Coordination with WR is also required.
SRPC had suggested that analyzing NLDC logic by Protection Group/System Studies Group of SRLDC may help in resolving the issues/finding the solution.
Status update by PGCIL.
8.2.4 SPS Maintenance Protocol
15 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
SPS Maintenance Protocol had been approved in 27th TCC & 28
th SRPC meetings held on 9
th&
10th October 2015. SR-II had informed that the proposal from M/s ABB had been received and
proposal from M/s ALSTOM was yet to be received. Status update by PGCIL.
8.2.5 Discussion on System Protection Using Optimization Technique(SPUOT) In the 122
nd meeting, SRLDC had proposed to make a group of feeders which would be
dedicated for tripping of various SPS operations in rotational manner in order to avoid repeated tripping of the same feeders connected under one SPS in the present scheme of arrangement. These dedicated feeders with designated quantum of loads would be tripped rotationally as per the required quantum of loads to be tripped set for different SPSs. Requirement of SPS loads could be reduced / optimized. OCC had felt that SRLDC could come up with draft scheme in the next OCC and the same would be deliberated in detail.
Item No.8 (g) of enclosed SRLDC letter dated 29.08.2016)
8.3 Status Review of Automatic Demand Management System
8.3.1 All constituents had confirmed about the implementation and enabling of ADMS in their
respective system. Changing the set points to 49.9 Hz. would be taken up in 29th TCC Meeting.
Record of the instances satisfying the logic for ADMS operation in the Region can be maintained
and put up to next TCC. It was observed that the number of instances had come down over past
few months.
8.3.2 It is noted that the issue was deliberated in the TCC Meeting of SRPC held on 26.08.2016 at
Chennai. The minutes of the Meeting are awaited.
(Item No.5 (b) of enclosed SRLDC letter dated 29.08.2016)
8.4 LVRT/Provisions of CEA Regulations for Renewable
8.4.1 Hon’ble CERC has passed Order in respect of Petition No. 420/MP/2014 on 05.01.2016. The
Order directs a number of actionable points by various utilities for compliance of LVRT, CEA &
CERC Regulations etc. Three Special Meeting were conducted at SRPC Bangalore on
05.02.2016, 18.04.2016 & 05.07.2016 (Meeting minutes are available at SRPC website).
8.4.2 This issue was further discussed in the Special Meeting held on 02.08.2016. (MoM are available
at SRPC website).
State AP TS KAR KER TN
Submissio
n of the
data
In 29th TCC,
agreed to
furnish the
data by
10.09.2016
Furnished in
the format
In 29th TCC,
agreed to furnish
the data by
10.09.2016
In 29th TCC,
agreed to
furnish the data
by 10.09.2016
Furnished the
data. Data is
at Annexure-
8D
Nominatio
n of Nodal
Officers
Received Received Received Received Received
Meeting
with RE
Developer
s
Follow up
Meeting
Scheduled
for
07.09.2016.
Meeting
conducted
Meeting
conducted on
17.08.2016.
Minutes of the
Meeting at
Annexure-8E
TN would hold
the meeting
with WTGs by
Aug’2016.
KSEBL
SLDC was
suggested to
call for
meeting with
RE
Developers
before SRPC
meeting.
16 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
Complianc
e of CEA’s
Connectivi
ty
Regulation
s
Planning
Wing was
taking care
to ensure
compliance
Suitable clause had been included in the bidding document of RE to
ensure strict compliance of CEA’s Connectivity Regulations for all
WTGs commissioned after 15.04.2014 and to ensure strict compliance
of LVRT feature for all Solar Generators connected above 11 kV
(whose NIT was not issued by 05.01.2016).
Had prepared a
Standard
Procedure for
Solar from
inception to
commissioning
which covers all
the requirements
for integration into
TS Control Area.
The procedure
would be uploaded
in TSTRANSCO
website. They
would put up the
issue for
Management
Approval
TSTRANSCO was
suggested to share
the details with the
other
utilities/SRLDC/SR
PC
Requirement
for WTGs
was being
ensured for
the Turbines
being
commissione
d.
Forecasting
and schedule
were already
covered in
their RE
framework of
KERC. Other
requirements
of
CERC/CEA
regulations
have been
referred for
compliance in
the
framework.
Further
deliberated in
the Meeting
held on
17.08.2016
Taking care of
the
requirements
for the WTGs.
Taking care
of the
requirements
for the
WTGs.
Preparatio
n of
quarterly
reports by
SLDCs
In 29th TCC meeting held on 26
th Aug’ 2016 , it was agreed that Quarterly reports for two
quarters (Jan-March 2016 & April-June 2016) would be furnished by 15.09.2016.
Report to
CEA with
respect to
N-1
contingen
cy line
loadings
In 29th
TCC meeting held on 26th Aug’ Report on N-1 compliance of their systems and
submit the reports to CEA within 3 months.
Data
Acquisitio
n System/
Real Time
Data
Availabilit
Out of 1100 MW renewable generators, about 900 MW (>80%) is integrated
98.7 MW of wind
capacity was
integrated to
SCADA. 350 MW of
solar capacity (EHT
level) out of 693 MW
KSEBL was
requested
to ensure
the SCADA
availability
of RE at the
Regarding 840
meters which
would be
connected on
the dedicated
renewable
17 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
y of
SCADA
system as
envisaged
in the
IEGC
to SLDC. The balance quantum was not compatible for SCADA mapping as they were commissioned before 2012. New generators are being directed to commission the feature for mapping.
of solar installed
capacity had been
integrated to
SCADA. Balance
343 MW of solar
capacity which is
connected at 33 kV
level and below was
yet to be integrated
to SCADA and it was
being pursued with
the RE developers.
SLDC. feeders at 22
kV and 11 kV
(through
MPLS), the
meters had
been installed
but modems
were yet to be
commissioned
and the
scheme would
be completed
by December
2016. It was
also informed
that tendering
was under
progress for
AMR energy
meter scheme
for around
11,000 meters
(3,000 meters
already
existing) and
the scheme
would be in
place before
next wind
season.
STU/SLDC
s would
communica
te to the
Wind
Developers
for setting
the
characterist
ics of LVRT
feature and
other
provisions
of CEA
Regulation
s within
end of July
2016.
They would
take up the
issue with
Wind
Developers
in the
meeting
schedule for
17.08.2016.
They had
communicate
d to the Wind
Developers
However,
there was no
response
from the
Wind
Developers.
STUs/SLD
Cs to
approach
SERCs on
18 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
various
issues
STU/SLDCs had been suggested to approach respective SERC’s for the following:
To make suitable provisions in their relevant regulations or through orders to provide for
mandatory installation of LVRT in WTGs which fall within their jurisdiction.
To make suitable provisions in their regulations and through orders to ensure that solar/wind
generators provide real time data to SLDCs as per the provisions of Grid Code. SLDCs to
ensure availability of data in respect of real time data from their Data Acquisition Systems of
solar/wind generators in SCADA systems to respective RLDCs as per the provisions of the
Grid Code.
To issue appropriate regulations/orders to align with the provisions of the Grid Code in
respect of forecasting and scheduling for intra-State solar/wind generators and demand
estimation by SLDCs.
CTU and STUs to make provisions in this regard in their Connection Agreements to ensure
that wind energy generators comply with the provisions of CEA Technical Standards for
Connectivity Regulations for grid connectivity before granting connectivity to the grid.
STUs had agreed to take up the issue with SERC for the above requirements.
Wind Developers had been requested to take up with SERCs to consider allowing the cost of
retrofitting WTGs with LVRT under the provision of 'Change in Law' in the respective PPAs.
STUs were requested to coordinate with wind developers and ensure the issue is appraised
to SERC.
All the constituents to ensure provision and enabling of LVRT feature in all the upcoming wind/solar generators before declaring COD. SLDCs were requested to approve connectivity to new generators only on confirmation of availability of LVRT feature and other CEA/CERC requirements. Monthly report of compliance needs to be furnished for new wind/solar generators added to the grid.
(Item No. 8(c) of enclosed SRLDC letter dated 29.08.2016).
8.5 Status review of action for grouping of loads (IEGC clause 5.4.2 (e) 8.6 Status Review of tripping details/reports
Non-furnishing of tripping analysis, DR & EL printouts with in 24 hrs as per IEGC by the SR
Regional Entities.
All tripping related information would be uploaded in SRLDC web based program. FIR would be furnished within 10 to 20 minutes of the incident. Non furnishing of tripping analysis, EL and DR printouts within 24 hours in line with IEGC/CEA regulations by the SR regional entities. CERC Order on Petition No. 146/MP/2013.
(Item No.8 (d) of enclosed SRLDC letter dated 29.08.2016).
8.7 Submission of Declaration on availability & healthiness of control, monitoring and Protection equipments / defense mechanism Schemes in SR on monthly basis by all the Regional Entities.
8.8 Status Update on Emergency Restoration System (ERS)
As per ERS requirement outlined in MoP letter dated 05.12.2014 status update on ERS is given below:
Transmission Utility
Requirement as per MoP
Existing Status/Remarks
APTRANSCO 3 Nos. ERS I – Placed at Nellore. ERS II – Received on 25.04.2016 and would be kept at Vizag. ERS III- Under consideration
TSTRANSCO 1 No. Tendering under process.
KPTCL 2 No. 2 Nos. ERS
KSEB 1 No. Appeared not to be feasible as per the assessment. KSEBL agreed to reconsider.
19 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
9 SCADA & Communication Issues a) Review of SCADA Computation Philosophy of drawal by state utilities.
b) A Special Meeting was held on 23.08.2016 to deliberate on pending SCADA/Communication
issues. Minutes of the Meeting is uploaded on SRPC website. Pending Items as on date and action plan finalized in the Special Meeting are as follows:
Issue Action Plan
1 Establishing E1 Link between Backup SRLDC to Backup NLDC
PGCIL vide E-mail dated 25.08.2016 informed that the E1 ICCP link between backup SRLDC (at NRLDC) & backup NLDC (at ERLDC) has been established and the port numbers are as given below: NRLDC end: E1-1-110-2 (Contact person: Mr. Narendra Kr Meena, Sr. Engr/NR-ULDC, 9810082410) ERLDC end: Slot-25 / Port-14 (Contact person: Mr. Shamik Nandi, Engr, ER-ULDC, 9830078558)
2 ICCP link between KPTCL Main & Backup SRLDC
It was agreed to call for a meeting between KPTCL, ABB, SRLDC & ALSTOM within a week with joint co-ordination of SRLDC & KPTCL.
3 Reporting of Status point of Gazuwaka (Isolators not reporting)
SRLDC had acknowledged the receipt of the same and they would revert back on verification / validation at SRLDC end.
4 Data discrepancies between site & SCADA values
All faulty data points involved in computation of real time grid drawl of constituents need to be attended immediately and resolved within a week by effective co-ordination of SR – I, SR – II and SRLDC by taking this assignment with exclusive focus. Other points of discrepancies will be resolved in subsequent weeks but within a month.
5 Updation of Scheduled share/Difference in deviation
SRLDC to look into the matter on updation of scheduled share. On difference in deviation, SRLDC informed that scheme of SCADA w.r.t. SEM point connectivity has already started for AP and the same would be taken up for all the constituents. They are ready for a joint verification on interchange values with standard Power Quality Analysers.
6 Replacement of Faulty status card at Vijaywada S/S
PGCIL had informed that the faulty Status card will be replaced in 2 weeks’ time in coordination with OEM
7 Replacement of Transducer at NTPC Ramagundam
NTPC had confirmed that that the procurement action for programmable transducer procurement is under process and the material receipt expected in a month. Accordingly the RTU replacement work will be completed within 2 months.
8 Providing additional RTU at NTPC Talcher
RTU procurement is under progress by NTPC and the same will be completed in 2 months.
9 Establishing Standby data channel from NPCIL Kaiga
PGCIL had confirmed that the link will be provided by end of August 2016
10 Frequent interruption of communication link between KSEBL back-up SLDC &
PGCIL had agreed to look in to the matter and resolve on priority
TANTRANSCO 2 Nos Approval received
PED Nil
PGCIL 4 Nos. ( 2 Nos additional)
2 Nos (SR I & SR II was having 1 No. each)
Order had been placed. Would be kept at Vizag and Chennai. Expected by June 2016 TSTRANSCO suggested that one ERS could be kept at Hyderabad. 765 kV ERS (one each for SR-I & SR-II) under process.
20 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
SRLDC back-up control centre
11 Non-availability/ Continuous interruption of DCPC communication:Madurai/Puducherry/Salem
PGCIL to analyse the reasons for link outages on the given dates and will furnish the details within a week.
12 Training on RTU
maintenance
A training module on RTU maintenance is being organised at Hosur S/S on 15
th September and all CGS of SR and
Regional Entities will be invited to attend the same.
13 RLDC Certification for filing
CERC tariff petition for
ULDC assets (OPGW
communication links)
PGCIL to present a procedure for certification of communication links and related assets in forthcoming OCC, where it will be deliberated and approved
14 OPGW stringing on balance
portion of KPTCL lines
SRPC that the issue is marked for discussion in forthcoming SRPC meeting. The issue has been deliberated in the SRPC Meeting and as agreed by Powergrid the nodal officers names from Powergrid for coordinating this issue was furnished by Powergrid vide their letter dated 30.08.2016(Annexure-9A) It was requested by Powergrid that Nodal Officer may be nominated from KPTCL for close coordination and smooth and early completion of the project.
c) SRLDC had invited attention of the forum that CERC had brought out Order on Suo moto Petition
007/SM/2014 dated 29.01.2016 regarding SCADA. It was directed by Hon’ble CERC that NLDC and respective RLDC are directed to update the status of telemetry every month at their website and persistent non availability of data from the generating stations/substations be taken up in RPC meeting for appropriate direction and action. Also NLDC is directed to submit user wise latest telemetry by 31.08.2016. SRLDC informed that they have started posting this information from February 2016 on their website.
d) Compiled Telemetry status – Utility wise- as directed by Hon’ble Commission The issue was being heard in CERC’s Suo-moto Petition No. 56/SM/2013.
(Item No. 4(a) & (b) of enclosed SRLDC letter dated 29.08.2016)
10 Physical and Cyber Security/Crisis Management Plan/Black Start Procedure
10.1 Status update on Crisis Management Plan(C&DMP) of Power Sector is to be furnished every quarter. The information regarding Cyber Security was to be furnished to Chief Engineer, DPD, CEA, Sewa Bhavan, and New Delhi-110066. Report on Physical Security, other Mock Drills for CMP, Mock Drill for Black Start Restoration was to be furnished Chief Engineer, DMLF, CEA, Sewa Bhavan, New Delhi-110066. A copy of the reports was to be sent to SRPC Secretariat ([email protected] & [email protected]). APTRANSCO, TANTRANSCO, TANGEDCO, KSEB, NPCIL, KPCL, NTECL, NLC, SRLDC, KPTCL, TSTRANSCO & TGGENCO had submitted the CISO Nominations. Others are requested to furnish the same.
Status to be submitted for the following:
State BSRP reports for Jan-June 2016
BSRP schedule for Jul – Dec 2016
Point to point mock exercise report being furnished
Updated list of Nodal Officer
Workshop Schedule
AP
TS
KAR
KER
TN
Pudu
21 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
10.2 Islanding Scheme: Priority for Railways in the matter of Restoration of Supply.
KPTCL: to expedite on the actionable points of KPTCL/BMRCL which were finalized in the special meeting. KPTCL had informed that hotline to SLDC was pending.
KSEBL: KSEBL vide letter dated 06.06.2016 had furnished the Operating Procedure for extending supply of power to Kochi-METRO.
TANTRANSCO/Southern Railway: The follow up of actionable points finalized in the special meeting in respect of Chennai Metro may be expedited by like redundancy at 220 KV level and commissioning of one more substation etc.
TSTRANSCO: was requested to take proactive action in respect of Hyderabad.
10.3 The following is the tentative dates for BSRP/MVAR capability testing:
STATE ISGS STATION DATE
Karnataka UPCL Sep’16
AP & Telangana Simhadri NTPC Oct’16
Kerala Kayamkulam, NTPC End of Sep’16
Tamil Nadu and Puducherry
NLC/NTECL Nov’16
Feedback on the above proposed dates for BSRP workshops 2016 from Utilities. (Item No.9 of enclosed SRLDC letter dated 29.08.2016)
10.4 Planning of Black Start Mock drill of Nuclear Power Plants
In the special meeting held on 19.05.2016, it was agreed that the Black Start Restoration Procedure Mock Exercise for Nuclear Power Plants would be co-ordinate on the days of Bus Shutdown / maintenance program. The station will take care of necessary resources required for such Mock Exercise and co-ordinate effectively. In this regard, it was agreed to have a plant level meeting with SRLDC and develop an internal procedure for detailing sequence of operations required at plant level in a similar manner as done for NTPC, Ramagundam etc.
10.5 Emergency Preparedness for restoration of Remotely Controlled Sub Stations In the earlier OCC Meetings the following was noted:
SRLDC had suggested that the exercise can be carried out during night period and requested that coordinators information should be furnished in advance. It was suggested that RTAMC being a coordinating agency for PGCIL substations can be called during the mock exercises at any time.
11 RGMO/FGMO: 11.1 Status Review of RGMO / FGMO implementation and performance in SR.
In earlier OCC Meetings, the following had been noted:
In case RGMO is taken out of service for any reason, generating station must intimate
SRLDC with the reasons.
SRLDC/SRPC had pointed out that all SLDCs were to ensure that all the new units have
RGMO, communication links, Main & Standby data channel and SCADA facility in place
before declaration of COD.
SRLDC had expressed concern regarding the RGMO response of the generators in the
region which was in the range of only about 20-40 % of the expected relief of the capacity on
bars.
SLDCs were requested to analyze the RGMO instances posted by SRLDC for the
generators in their control area and take up action as per 84/MP/2015. Inadequate
Response to be taken up with SERC (Petition No.302/MP/2013). Action on
22 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
recommendations finalized in the Special Meetings needed to be taken by
generators/states. All generators were kindly requested to take all steps to ensure intended
RGMO/FGMO response.
As per the order in RGMO Petition No. 302/MP/2013, the units (including state embedded)
shall not be scheduled beyond their ex-bus generation corresponding to 100% of their
installed capacity.
11.2 RGMO implementation/ Extension of RGMO status point to SLDC
The following had been noted in earlier meetings w.r.t status point extension-pending:
APTRANSCO: Upper Sileru (Cable problems) & Machkund (RTU problem) stations were yet
to extend.
TSTRANSCO: Status point of Hydro units were yet to extend.
TANTRANSCO: MTPS- I and Hydro stations to be extended.
KPCL: KPCL informed that the RGMO status points would be extended for all Raichur TPS
units by September 2016. Almathy, Kadra & Gerusoppa HEP status points were made
available but yet to be configured to SLDC.KPTCL had informed that RTPS status points
were not visible. KPTCL and KPCL were requested to ensure in this regard.
UPCL: Cable had been laid upto switch yard and the status points would be extended within
a week.
JSWEL: Yet to be extended to Kar SLDC
11.3 Implementation of RGMO by TPCIL & CEPL as per IEGC provisions. 11.4 UPCL vide their E-mail dated 30.08.2016 had informed that the status signal has been extended
to SLDC Karnataka and same has been verified for the values being shown at SLDC. 11.5 It was requested by SRLDC that the RGMO Status of State Generating Stations (consolidated
table) may be made available to SRLDC through ICCP. JSW & UPCL pending. SDSTPS data is not updating.
(Item No.10 of enclosed SRLDC letter dated 29.08.2016) 12 Transmission Network Issues and System Operation Issues:
12.1 High loading on 400 kV Nellore PS- Nellore DC line/Separate control area for Nellore PS
complex. 12.1.1 The issue had been deliberated in the 28
th TCC/29
th SRPC Meeting held on 4
th and 5
th March
2016 and previous OCC Meetings. NLDC had observed that a number of operational issues could be resolved by declaring separate bid area and it was an easily implementable solution. With separate bid area, NLDC/SRLDC could optimize the evacuation with the available network. They would inform Hon’ble CERC regarding formation of separate bid area. Power Exchange would also be apprised accordingly. CTU was suggested to examine other options like reconfiguration of some lines, shifting of one or two lines etc. for enabling higher evacuation from the complex. It was noted that NCC Unit I was scheduled to be commissioned by May 2016 and hence process of formation of separate bid area needed to be completed at the earliest.
12.1.2 In the 123rd
OCC meeting it was noted that no further action in this regard had been informed.
(Item No.14 (e) of enclosed SRLDC letter dated 29.08.2016)
12.2 Load ability of ICTs and revisit of the associated protection settings to prevent cascaded tripping of ICTs./high loading of transmission lines
12.2.1 Insufficient action in controlling the loading of ICTs leads to N-1 criteria violation in compliance of Regulation 3.1 f(8) of CEA(Grid Standards) Regulations 2010 and Regulation 3.5 a(i) of CERC Indian Electricity Grid Code Regulations 2010 had been reported by SRLDC and had requested for urgent action to alleviate the loading of 400/220 kV ICTs. It was also requested that a long term solution of augmentation/load shifting may also be considered in view of grid security.
12.2.2 Load ability of ICTS and revisit of the associated protection settings to prevent cascade tripping of ICTs. N-1 violation of Arasur, Vemagiri, Somanahalli, Madurai, Trichy and Ramagundam ICTs.
(Item No.8 (b) of enclosed SRLDC letter dated 29.08.2016)
23 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
12.3 PSS Tuning of generators:
12.3.1 3rd
meeting to review the status of PSS tuning of the generators was convened on 28th June 2016
(Tuesday) at SRPC, Bengaluru. PSS study committee had analyzed the SRT reports furnished by the generators. Minutes of the Meeting are available at SRPC website.
All the generators to follow the action plan finalized in the 3rd
PSS meeting. PSS study group had analyzed the SRT reports furnished and recommendations had been finalized.
12.4 Prolonged Outage
Status review of prolonged outage of grid elements in SR. Furnishing Realistic Action plan for revival of the prolonged outage is awaited from some of the constituents. Monthly reports are required to be submitted to Hon’ble CERC in this regard. (CERC Order on petition no 146/MP/2013). The following is noted in the 122
nd OCC Meeting:
Ramagundam STPS ICT- II: Commissioning will take another one month. Bus bar
protection panel is not available and it is planned to shift it from Gajwel.
N’sagar – Cuddaupah FSC I at Cuddapah: Revived on 27.07.2016
Chittor ICT1: Survey report is submitted by field officer and the same was put up to
higher level.
Hoody ICT: ICT is under transit and will reach the site after 35 days. Commissioning will
take another 2 months.
TANTRANSCO vide letter dated 26.08.2016 has furnished the reasons for prolonged outages
for ETPS Unit-V& TTPS Unit III and action plan for revival of Unit II and III of TTPS and Unit IV
of MTPS Unit-1 of TANGEDCO stations. (Annexure-12A)
(Item No. 11(a) of enclosed SRLDC letter dated 29.08.2016)
12.5 Review of operation of Inter Regional & Intra Regional Line/Non commissioning of Auto enclosure
SI No Element Status
1 Ambewadi – Ponda A/R had been commissioned but was to be put in service
2 Ambewadi-Xeldam To be commissioned
3 Kaiga - Guttur, KPTCL was ready to enable the A/R at Guttur end and once Kaiga agrees, they would enable the A/R.
4 Nagjheri lines KPTCL would enable the A/R once KPCL is ready. KPCL informed that retrofitting works were going on
5 KKNPP-Madurai lines
Dropped
6 MAPS lines In 121st CC Meeting, MAPS representative had
informed that A/R would be implemented by July 2016 for MAPS evacuation lines 3 & 4. The A/R on other two lines would be completed after receiving CTs from TANTRANSCO.
7 BHAVINI Lines In the Special Meeting held on 19.05.2016,
BHAVINI had agreed to consider and implement
the A/R scheme (could be time differentiated A/R).
Necessary approval would be taken from their
engineering/corporate. BHAVINI was suggested to
implement the A/R scheme by June 2016.
(Item No. 11(c) & (d) of enclosed SRLDC letter dated 29.08.2016)
24 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
12.6 Status update of commissioning of 400/220 kV ICT at Kudgi, NTPC In the 122
nd OCC Meeting NTPC had informed that ICT at Kudgi SS, NTPC would be
commissioned by August 2016.
12.7 Status of ICTs at Hoody It is informed that ICT II B-phase failed on 18.04.2016 has reached site and erection works are going on. For ICT II R-phase failed on 02.06.2016 tenders are quoted.
12.8 Reconciliation of Schedule within the same shift by Regional Entity. (Item No.14 (c) of enclosed SRLDC letter dated 29.08.2016.)
12.9 SEM discrepancies observed during August 2016 (Item No.14 (g) of enclosed SRLDC letter dated 29.08.2016.)
12.10 Status review of actions taken by SEPL/MEPL in respect of Hon’ble Commission Order in I.A. Nos. 34/2015 and 5/2016 in Petiton No. 205/MP/2011
(Item No.14 (b) of enclosed SRLDC letter dated 29.08.2016.) 12.11 Alternate Auxiliary Supply arrangement for Bhadravathi back to back HVDC station in view of
shifting of 315 MVA ICT. . (Item No.14 (a) of enclosed SRLDC letter dated 29.08.2016.)
12.12 Upcoming Generating Stations:
Central Sector:
Station Unit IC in MW Schedule Remarks
NTPC
Kudgi TPS Stage-I I,I, III 3x800= 2400
Unit-I :Syn. by Oct.’16 & CoD by Mar’2017 Unit-II : Syn. by Mar’17 & CoD by Sep’17 Unit-III : Syn. by Jun’17 & CoD by Dec’17
NPCIL
KKNPP Stage-I II 1000 Unit-II: Synchronization by July’16 . FL by October 2016
BHAVINI
Kalpakkam (PFBR) I 500 Synchronization by March-2017
State Sector/IPPs
Station Location Owner IC in MW SCH/Remarks
Rayalaseema TPS ST-IV
AP State 600 COD by Dec 2016
Meenakshi PH-II AP IPP 700 2016-17 Untied : 640 MW
East Coast Energy
AP IPP 1320 2015-16 AP : 300 MW
Thermal Powertech Unit-III
AP AP
IPP IPP
1320 660
Unit-III : 2016-17
SGPL, Krishnapattnam
AP IPP 1320 Unit I: COD by 2016-17 Unit II: Synchronization 2016-17 AP: 500 MW (Firmed up PPA to be signed)
LANCO Kondappalli(Stage I& II)
AP MPP 2x317 Unit 3A: Achieved full load on 07.08.2015 Unit 3B: Achieved full load on 05.09.2015
GMR Rajahmundry Energy Limited Stage II (GREL)
AP IPP 2x384 U1: Achieved Full Load on 12.09.2015
Hinduja NPCL, Vizag
AP IPP 1040 COD of Unit 1: 11.01.2016. Unit II : 1
st Synchronized on 31.03.2016
25 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
12.13 ATS for Yeramarus TPS, BTPS Unit III, Hinduja and CEPL Unit II
(Item No.13 (c) of enclosed SRLDC letter dated 29.08.2016) 13 Constituents/Generators are also requested to furnish the following Data/Information:
a. Minimum/Maximum Demand Ratio of Constituent States. Information and measures adopted may please be shared.
b. Forced/Planned outages of thermal units. c. Status of Srisailam/Kadamparai pumps mode operation. d. Installed Capacity in MW as on 31.08.2016 and additions to Installed Capacity in August
2016. e. Submission of details of new elements to be provided on monthly basis in the agreed format
by all the Regional Entities. (Item No. 12 of enclosed SRLDC letter dated 29.08.2016).
f. Load Shedding in MW & MU carried out during August 2016 on daily/hourly basis. g. Capacity in MW of Wind Mills/Renewable (Category wise) added in August 2016 by State
Sector and Private Sector - to be furnished separately. h. Generation in MU of Wind Mills/Renewable (Category wise) August 2016 by State Sector and
Private Sector - to be furnished separately. i. PLF & PAF of Thermal & Nuclear Power Stations. j. Details of Energy Exchanges by the states (including embedded IPPs/CPPs) through Power
Exchanges. k. Constituents may apprise the OCC of surplus power available, if any. l. Progress of works of generating units to be commissioned in 2016-17 and also coming up in
future. m. Details of Power Cuts on Industries, Load Shedding and Power supply to Agriculture Sector
may please be furnished in the Proforma prescribed by CEA vide their letter No. 1/AI/COR/GM-2004/3405 dated 23.11.2004.
n. Coal Stock Position to be submitted on monthly basis by Generators (States/ISGS). o. Uploading of hourly Load Shedding details (both scheduled and unscheduled) effected in
previous day by all the constituents in SR.
p. Loss of generation due to coal shortage/technical problem needs to be furnished for onward transmission to NLDC by 1000 hrs on daily basis.
q. Collection of data regarding Power Supply to Rural Areas
In the Meeting held at MoP on 09.04.2014 it had been decided to collect the data invariably from DISCOMs. It is requested that the data in this regard in the required format may please be arranged to be communicated to SRPC Secretariat at the following E-mail addresses:
[email protected] [email protected] Data to be communicated by first week of the month for previous month.
: COD from 00:00 hours of 03.07.2016 Letter in this regard from AP is at Annexure- 12B
Bellary TPS U-3 KAR State 700 Achieved full load on 01.03.2016. COD by June 2016
Yeramarus TPS KAR State 1600 Unit-I: FL achieved on 29.03.2016. Unit II: COD by June 2016.
IL & FS Unit-II TN IPP 600 First Synchronized on 13.04.2016. COD from 30.04.2016
Kakatiya TPP
St-II
TS State 600 COD on 24.03.2016. Confirmation was yet
to be received from Commercial wing.
Singareni TS IPP 1200 Unit I: CoD by June 2016.
Unit II: CoD by August 2016.
26 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.
r. Reporting the Status of implementation of the recommendations of the Enquiry Committee
Status as on last day of the month to be forwarded by 3rd
day of the following month, and
that as on 15th of the month to be forwarded by 17
th of the month All the constituents were
requested to furnish timely status updates
s. Energy Generation data Management from Renewable Energy Sources Monthly generation data in respect of Renewable Energy Sources was to be submitted to
CEA with a copy to SRPC.
t. Preparation for meeting the revised environment norms as per Environment (Protection) Amendment Rules,2015 CEA vide letter dated 18.01.2016 had requested to furnish the details of preparedness and action plan in order to comply the revised water consumption and emission norms by the existing and new thermal units (to be installed from 01.012017 onwards) as per Environment (Protection) Amendment Rules, 2015 notified by Ministry of Environment, Forest & Climate Change (MOEF & CC) (Gazette Notification dated 07.12.2015). Vide letter dated 20.01.2016 SRPC had communicated to all concerned in this regard. The information may be furnished through e-mail & letter at [email protected]& Chief Engineer (TPE & CC), CEA, Room No.902 (S), Sewa Bhawan, R.R.Puram, New Delhi – 110066 and a copy of the same may also be forwarded to [email protected]/ [email protected].
14 Any other point with the permission of the Chair.
15 Date and Venue of the next Meeting.
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