Southern Regional Power Committee Bengaluru Agenda notes for 116th Meeting of the Operation Coordination Committee of SRPC to be held at Bengaluru on 10th February 2016 1. Confirmation of the Minutes of the 115th Meeting of OCC held at Mysore on 8th January 2016. 2. Monthly/Annual Outage Plan 2.1 ISGS/CGS: Generating Units a) Shut Down Proposals for February/March 2016 b) Shut Down carried out during January 2016 along with reason for deviation if any. c) KGS Unit I Outage: It was noted that as per Annual Outage Plan Kaiga Unit I was scheduled to be taken out in the month of December 2015 for Annual Maintenance work. In the 114th Meeting, Kaiga representative informed that they would be taking out the unit during January 2016 to March 2016 and OCC had suggested that KGS could avail shutdown in December 2015 as programmed else shutdown would be approved only after May 2016. KGS vide their letter dated 28.01.2016(Annexure-2A) had informed that due to some process problem Unit I power would be reduced gradually @ 12 MWe/5 min from 1900 hrs of 28.1.2016 and subsequently Unit would be manually shutdown. It was also mentioned that progress of Unit shutdown and resynchronization plan would be intimated later. d) Revival of KKNPP Unit I: The unit which was out form 24.06.2015 had been revived at 07.12 hrs of 30.01.2016. 2.2 ISTS/State Sector Transmission Elements a) As per the NLDC outage procedure constituents to furnish the outage proposals for subsequent month by 3rd of present month which would be posted on SRPC website by 5th of present month. The outage proposals shall be furnished in the specified format in Excel form through E-mail to the following address. seoprnsrpc-ka@nic.in b) Constituents/utilities are requested to furnish the information about the shutdown carried out during last month against shutdown approved and also information regarding unapproved/emergency shutdown in their respective system. SRLDC is also requested to furnish the details of shut downs availed / not availed during the previous month by various utilities against the OCC approved shut downs. c) All utilities were suggested to kindly get all outages including those relating to construction approved through the OCC forum. d) In the 115th OCC Meeting, the highlights of the CERC Order dated 14th December 2015 regarding outage approvals for planned, emergency and construction works were brought to the notice of the forum. The order states that no unplanned outage can be 1 Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. approved and even construction activities can be planned. PGCIL/Utilities expressed their difficulties in this regard and after deliberations it was agreed that in order to facilitate changes in the dates of construction outages, critical overhauls etc. one more set of shutdowns would be considered through OCC Outage web group. Modification in the dates of the constructions/critical overhauls would only be considered (not AMP works) provided it is supported by reason for the change of dates. The process to be followed would be: i. ii. iii. iv. v. All the shutdown proposals (modified/new meeting the above criteria) would be submitted to SRPC/SRLDC in the requisite format by 20th of the month for the outages planned for next month. SRPC/SRLDC would jointly review the proposal and furnish the details along with observation/ATC curtailment etc. during 21st to 25th of the month. SRLDC would coordinate with NLDC /other RLDCs for the Inter – Regional / critical elements shutdown proposals. It would be posted in the OCC Outage Web Group and on SRPC website. Constituents/entities could revert back with observations during 26th to 28th of the month in the OCC Outage Web Group. The approved outages would be posted on SRPC website before end of the month. It needs to be noted that the new list of shutdown proposals would consists only the modified/additional construction/critical shutdowns. Approval would be at the discretion of SRLDC/SRPC/Constituents. e) Revised procedure for approval of LC - Planned/Unplanned (Emergency and for Bay Equipment) - Need for the request on D-3 basis (D-day of LC) and common LC request format (Item No. 5(f) of enclosed SRLDC letter dated 29.01.2016). 3. LGBR for upcoming five months a) Schedule of Hydro and Thermal Generation. b) Details of anticipated assistance from other sources including bilateral assistance. c) Anticipated Consumption. d) Shortfall/Surplus if any and how the same is proposed to be met. e) Status review of Development of State of the Art load forecasting tools as per clause 5.4.2 of IEGC. f) Loss of Generation due to fuel shortage- Action plan for meeting their demand and short fall by constituents. g) The coal shortage issue and sharing of coal availability as per the CERC order dated 23.07.2013. h) Load Generation Balance in real time. i) 2 Signing of Connection agreement by old & existing generating stations as per Order dated 19.01.2015 of the Petition No. 169/SM/2012. Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. j) Status Review of ATC/TTC calculation by SLDCs. k) Submission of LGBR in specified format and submission of network data in PSSE format (.raw files). l) Action plan/preparation for meeting the impact of poor monsoon (Item No. 11 (a), (c) (d), (e), and 12 (b) of enclosed SRLDC letter dated 29.01.2016). 4. Review of Power Supply Position /Inflows Constituents 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. 5. 5.1 c) Inflows (MU) to major reservoirs: Actual w.r.t. 10 year moving average and w.r.t. same month last year. Issues for deliberation 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 (Annexure-5A) SRPC had communicated to all concerned in this regard. The information may be furnished through e-mail & letter at edmcea@yahoo.co.in & 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 seoprnsrpc-ka@nic.in/ srpc.operation@gmail.com. All thermal power plants are kindly requested to furnish the action plan to comply with Environment (Protection) Amendment Rules, 2015. All SLDCs are requested to take up with the thermal power plants in their state. 5.2 Completion of Trial Run of 2nd Unit of 600MW of Mutiara Thermal Power Plant/ Constraints in transmitting full output from 2x600 MW Coastal Energen’s Mutiara Thermal Power Plant/SPS proposal 5.2.1 Coastal Energen Private Limited vide letter dated 14.01.2016 (Annexure-5B) had communicated to SRLDC that 2nd Unit of our 2x600MW of Mutiara Thermal Power Plant was successfully synchronized to the Grid on 26th Dec 2015 and achieved full load of 600MW on 2nd Jan 2016. Trial run of the 2nd Unit was carried out from 12:30 hrs of 10th Jan 2016 to 20:00 hrs of 13th Jan 2016. The average load of the Unit during 20:00 Hrs of 10th Jan 2016 to 20:00 hrs of 13th Jan 2016 was 607 MW. It was mentioned that they intend to declare COD of the 2nd Unit of 600MW with effect from 00:00 hrs of 14th Jan 2016. It was requested by Coastal Energen that approval for declaring COD of the 2nd Unit of 600 MW of Mutiara Thermal Power Plant may kindly be accorded with effect from 00:00 hrs of 14th Jan 2016. 3 Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. 5.2.2 Coastal Energen Private Limited vide letter dated 07.01.2016(Annexure- 5C) had informed that as per the Meeting held on 11.12.2015 at CEA New Delhi regarding Synchronization and declaration of CoD of Unit 2 of Coastal Energen , Coastal Energen can export only 450 MW as against 1100 MW with both the units of NTPL running at full load and exporting 950 MW. The total power evacuation from Coastal-NTPL Pooling Station Complex should not exceed 1350 MW. It was appraised that both the units at full capacity is necessary to supply power and also service the loans and interest to 18 banks which have funded the project. Coastal Energen had proposed the following SPS to restrict the power flow in NTPL Bus to the extent of 1350 MW and to maintain grid stability. With 2 Units of Energen running at full load and if Coastal-Pooling Station 400 kV line trips one unit of Energen will trip instantaneously. As a back up to the above Directional Over Current Relay will be provided for Coastal – NTPL 400 kV line to trip the Unit/Units at 650 A(450 MW) It was requested that Coastal Energen may kindly be permitted to incorporate the proposal for running both the units till June 2016 and they had committed that by that time both Coastal Energen and PGCIL would complete the proposed evacuation lines. The above proposal was discussed in 50th PCSC Meeting and the following was noted and the issue was flagged to 116th OCC Meeting. 5.3 SRLDC had stated that there are two scenarios to be taken into account: a) If SPS works: Generation will be reduced without load shedding. Then the demand has to be met by increasing the 765 kV Raichur-Sholapur flow which will cross its ATC limit. b) If SPS does not works: The end equipment of NTPL station will be affected as it is allowing power flow more than its limit (1350 MW). SRLDC had informed that the proposed SPS should incorporate both reduction in Generation and shedding of loads to maintain the Load-Generation Balance of that area. The SPS can be implemented if the corresponding State has to agree to identify separate loads to be shed for this Generation loss. Request to issue certificate for claiming additional as per CERC Guidelines: PGCIL SR I vide letters dated 19.01.2016 (Annexure-5D) requested that necessary certificate may kindly be issued to enable POWERGRID get additional 0.5% ROE as per the clause 24.2 III of CERC Tariff Regulation for 2014-19 block for early commissioning of the following transmission elements: Kurnool – Raichur 2nd 765KV S/C Line along with associated bays and equipments at Kurnool and Raichur Substations under ISGS Krishnapatnam : It was stated that the line has been put into commercial operation w.e.f. 21.06.2014 i.e. commissioned 1.35 months ahead of CERC completion schedule. Kurnool(New) – Raichur 765KV S/C Line along with associated bays and equipments at Kurnool and Raichur Substations under SRSS - XXII: It was stated that the line has been put into commercial operation w.e.f 15.12.2015 i.e. commissioned 13.71 months ahead of CERC completion schedule. The relevant extract of the clause is reproduced for reference: Quote: th th 4 Agenda for 116 OCC Meeting of SRPC to be held on 10 February 2016. “Additional RoE of 0.50 % may be allowed if any element of the transmission project is completed within the specified timeline and it is certified by RPC/NPC that commissioning of the particular element will benefit the system operation in the Regional/National Grid” Unquote 5.4 Line clear on 230KV MAPS – Arni, MAPS – Acharapakkam –Bus section Shutdown at MAPS Regarding TANTRANSCO vide letter dated 06.01.2016(Annexure-5E) had informed that as per MAPS approval for line clear was issued for replacement of Y phase CT in bus section Breaker. All the arrangements/precautionary measures had been taken to limit the line loadings of other 230KV feeders for proceeding line clear on 05.01.2016. The flow in 230 KV MAPS – S.P. Koil feeder was 98.5 MW in each circuit which was as expected before the line clear approved. At 12:40 hrs, MAPS Unit I went on house load and generating 17 MW. OD/MAPS requested SLDC for taking Arni line back into service. But line isolator was opened at 230 KV Arni SS for line maintenance works. The MAPS – S.P. Koil I&II lines were available for evacuation of MAPS generation. It was requested by TANTRANSCO that the reason for Unit I going on house load when Grid connectivity was available for evacuation, may be communicated for taking further course of action. It was also informed that the maintenance work was programmed in both 230KV MAPS – Arni line and 230 KV MAPS – Acharapakkam line, when both lines under shutdown (Bus B shutdown) on 08.01.2016 when CT replacement of MAPS is planned. 5.5 Shut Down of HVDC Talcher-Kolar HVDC link for replacement of polluted insulators and AMP-reg. The SD was availed from 09.01.2016 to 14.01.2016. SRLDC may appraise the forum about the lessons learnt during the shutdown. 5.6 TPCIL-NPS 400 kV Lines outage on 30.12.2015 TPCIL vide letter dated 01.01.2016 had informed that on 30.12.2015 at 06:02:20:45 hrs TPCIL Line II from Nellore PS & NCC Line I from Nellore PS were tripped together. Both TPCIL & NCC plant went for a black out. Before outage TPCIL Unit I and Unit 2 were loaded upto 625 MW & 510 MW respectively. It was found that while line II breaker was tripped both at TPCIL and NPS ends instantly through Zone-1 fault sensing in distant relays Line-1 tripped at NPS end on Zone -2. TPCIL expressed concern that any unwarranted tripping not only gives a huge commercial impact on them but also stresses the machine because of load through off and requested that SRLDC may kindly look into the matter and may instruct the concern accordingly. The issue was taken up in the 115th OCC Meeting and it was felt that the relay setting issue was a protection issue and was suggested to flag the issue to next Protection Committee to be held on 27th January 2016. It was noted that the issue has been deliberated in the 50th PCSC Meeting. The generation loss was 1270 MW and categorized under GD-1. SRLDC was requested to come back on the commercial issues since both the lines had tripped and to clarify that whether this outage period can be treated as evacuation constraint/ grid disturbance and the deviation account could be prepared as per Regulations. SRLDC to appraise. 5 Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. 5.7 Tripping of Raichur – Sholapur Line II on 02.01.2015 and delay in restoration It was noted that critical inter regional link 765 kV Raichur-Sholapur line II tripped on 02.01.2016 at 10:46 hrs due to conductor snapping and was restored on 07.01.2016. SRLDC vide letter dated 04.01.2016 had reported the issue of non-restoration of the line within two days in compliance with SOP regulations 2012 under clause 1.5 of IEGC 2010. A Special Meeting was conducted at SRPC Bengaluru on 11.01.2016 to discuss the delay in restoration of the line. It was agreed by RSTCPL that they would furnish the detailed reply on all actionable points by 10th February, 2016. 5.8 Scheduling of NTPC Ramagundam Solar Power Plant(10 MW): 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. In the 115th OCC Meeting NTPC had informed that they would furnish the timeline by 3rd week of January 2016. NTPC was requested to furnish the PPA rates etc as mentioned in the Renewable integration frame work. (Item No.5 (d) of enclosed SRLDC letter dated 29.01.2016) 5.9 PSS Tuning of generators: Data requested In the 2nd Meeting of PSS tuning held on 30.10.2015 many actionable points were noted to be carried out by Generators of SR. It was of concern that many Generators have not furnished the information in this regard as requested. SRPC vide letter 22.01.2016(Annexure-5F) had communicated that all the generators/utilities may kindly furnish the PSS details and Step Response Test Reports in the specified format at the earliest. 5.10 Sub Committee on Transmission Planning: National Electicity Plan: Data requested Preparation of National Electricity Plan (NEP) is the responsibility entrusted to CEA under Electricity Act, 2003. Under Section 3(4) of the Electricity Act, 2003, the Authority shall prepare the NEP in accordance with the NEP and notify such plan in five years after obtaining the approval of the Central Government. SRPC communications dated 12.01.2016 and 25.01.2016 to SR constituent/ states requesting information in the specified formats in this regard are at Annexure 5 G & 5H. 5.11 Synchronization of Mysore- Kozhikode 400 kV system with Kerala grid/ Commissioning of 400 kV SS, Kozhikode – Extension of status points for SPS at 220 kV SS Areakode. In the 114th OCC Meeting KSEBL had informed that the SPS scheme was implemented and test was carried out during off-peak period. In the 115th had KSEBL informed during tied operation, two PGCIL ICTs (315 MVA) at Kozhikode substation were being over loaded and 6 Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. to avoid this situation, KSEBL had to increase the generation at Kuttiadi HEP which causes depletion of water. Currently radial operation was being continued and hence the mock test at Peak load was not carried out. Provision of Additional Load Relief for SPS – Exemption sought by Puducherry ED. 5.12 PED vide letter dated 07.01.2016 had informed that they were in the process of reshuffling the load relief quantum in UFR scheme & ADMS and identification of appropriate 110 kV, 22 kV & 11 kV feeders(23 MW) for SPS operation. In the 115th OCC Meeting PGCIL had informed that the data channel was available and they would extend the signal upto Puducherry SLDC. 6 Nos of Protections couplers had been purchased and would be ready within one week. 5.13 High loading on 400 kV Nellore PS- Nellore DC line/Separate control area for Nellore PS complex. The issue of high loading of NPS-Nellore DC lines was also discussed in the special meeting on grid related issues held on 20.10.2015. Subsequently SRLDC vide letter dated 20.10.2015 and 02.11.2015 had addressed to CTU to advise SRLDC: About the maximum power that can be evacuated from Nellore complex so that curtailment of infirm power, STOA/MTOA transactions could be affected as per Regulations. If 400 kV Nellore PS- Nellore D/C line had to be opened to contain short circuit level, the appropriate time frame for opening the line considering the availability of generating units. CTU vide letter dated 03.12.2015 had replied to SRLDC in this regard. Subsequently SRLDC vide letter dated 07.12.2015 had communicated their views in this regard. In 114th OCC meeting, SRLDC pointed that more clarity from CTU was required. In the 115th OCC Meeting SRLDC had stated that they were planning a separate control area for Nellore PS complex. (Item No.5 (b) and 12(e) of enclosed SRLDC letter dated 29.01.2016) 5.14 Loadability of ICTs and revisit of the associated protection settings to prevent cascaded tripping of ICTs. 5.14.1 Insufficient action in controlling the loading of ICTs leading to N-1 criteria violation in compliance of Regulation 3.1f(8) of CEA(Grid Standards) Regulations 2010 and Regulation 3.5 a(i) of CERC Indian Electricity Grid Code Regulations 2010 : The high loading/N-1 of Arasur and Nellore, Vemagiri, Somanahalli & Ramagundam ICTs 5.14.2 APTRANSCO vide letter dated 04.01.2016(Annexure- 5I) had informed the following: rd (Item No.5 (b) of enclosed SRLDC letter dated 29.01.2016) 5.15 SPS Maintenance Protocol: 7 rd 3 ICT at Nellore were under execution and would be charged by 3 week of January 2016. rd 3 ICT at Vemagiri would be available by June-2016. Till that time, load rearrangement and aading generation at 220 kV level in Vemagiri area done to mitigate the problem. Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. SPS Maintenance Protocol had been approved in 27th TCC & 28th SRPC meetings held on 9th & 10th October 2015. In the 115th OCC Meeting, SR II, PGCIL had informed that Management approval had been taken and work would be awarded soon. Status update by PGCIL. 5.16 Implementation of URTDSM (PMU) project in Southern Region: It was noted that the schedule for completion of the project was 24 months from the date of award. SR I & SR II, PGC IL to update the status. 5.17 Video Conferencing facility at SLDCs: In the earlier OCC Meetings, the following were noted: APTRANSCO: Will provide the facility in new SLDC at Vijayawada. TSTRANSCO: Will be commissioned by 15th January 2016. KPTCL: Will be commissioned by 15th January 2016. KSEBL: It was noted that VC facility at Kerala SLDC had been tested and commissioned. TANTRANSCO: Quotations had been received for provision of VC facility. However P&C wing had recommended for retendering. PED: Due to paucity of funds in the current financial year, they were not in a position to install the VC facility at Puduchery SLDC and shall be arranged to be installed during the next financial year subject to approval from Government of Puduchery. SRLDC: Both side VC facilities should be made available by all SLDCs. PGCIL: Band Width/data Channels was ready by PGCIL but connectivity to end equipment (SDH equipment) should be done by the concerned utilities. 5.18 CERC Order dated 05.10.2015 on Petition No. 310/MP/2014 w.r.t Un-requisitioned Power of Sasan UMPP and CERC Order dated 18.12.2015 on Petition No. 16/SM/2015. 5.18.1 Hearing of CERC on Petition No. 16/SM/2015 (Difficulty encountered in implementation of the Commission`s order dated 5.10.2015 in Petition No. 310/MP/2014 regarding scheduling of unscheduled surplus power from the inter-State generating stations) was held on 05.01.2016. In the RoP, The Commission directed that in modification of the direction in para 5 of the order dated 5.10.2015 and pending final decision on the issue, the following procedure shall be followed: “Where both the generating station and its beneficiaries (surrendering and requesting beneficiaries) give their standing consents in writing to RLDC that the decision of the concerned RLDC will be binding on them with regard to scheduling and dispatch of URS power, the concerned RLDC shall schedule such URS power to the requesting beneficiaries in relative proportion to the quantum requested by them. In other cases, RLDCs shall schedule URS power on the basis of the consents submitted by the generating stations in terms of the order dated 5.10.2015.” The Commission directed the respondents to file their replies by 22.1.2016, if already not filed. The Commission directed that due date for filing the replies should be strictly complied with. No extension shall be granted on that account.The petition shall be listed for hearing on 23.02.2016. 8 Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. (Item No.5 (c) of enclosed SRLDC letter dated 29.01.2016) 5.19 Action plan/preparation for meeting the impact of poor monsoon In the 114th OCC Meeting SRLDC had informed that in most of the major reservoirs the levels were observed to be very low. It was requested that all the constituents may kindly be ready with action plan regarding their plan for Load Generation balance in view of poor monsoon. (Item No.5 (c) of enclosed SRLDC letter dated 29.01.2016) 5.20 Urgent actions required with reference to the System Protection Schemes(SPS) of Raichur-Sholapur D/C line NLDC vide letter dated 5th January 2016 expressed concern on the following issues regarding the SPS scheme for Raichur-Sholapur D/C lines which required urgent attention in terms of root cause analysis and taking the necessary actions. I. Non – Operation of SPS on 2nd January 2016 II. Revision in SPS settings subsequent to the increased TTC/ATC and operationalized LTA/MTOA SRPC vide letter dated 07.01.2016 had requested Powergrid SRTS I & SRTS II that the reason for non operation of SPS may be kindly examined and needful corrective action be taken to ensure the healthiness of SPS at all times. In the 115th OCC Meeting SR I, Powergrid had informed that though SPS signal was generated at both Raichur and Sholapur the signal was not received at Kolar and the issue was under examination. The final report was still awaited. 5.21 Revision of SPS subsequent to commissioning of 765 kV Kolhapur-Kudgi(PG) D/C(initially charged at 400 kV) It was noted that NLDC vide letter dated 23.12.2015 had furnished revision in SPS settings subsequent to the commissioning of 765 kV Kolhapur-Kudgi D/C line of Powergrid. KSEBL vide letter dated 07.01.2016 had raised certain observations on SPS settings. SRPC vide letter dated 07.01.2016 had brought attention of NLDC on the views of Kerala. 5.22 PoC data Validation: In the 115th OCC Meeting SRPC had informed that in the last PoC Validation Committee Meeting it was decided that whatever data submitted to Validation Committee from NLDC should be verified at RPC level which involves many steps. Data is required once in three months. It was suggested that at present we can start with LGBR data validation. Data can be submitted in next OCC and in subsequent OCC it can be validated and afterwards can be submitted to Validation Committee. 5.23 CEA vide letter dated 01.01.2016 had circulated Minutes of 4th NPC Meeting held at CEA, New Delhi on 10th December 2015. (Annexure- 5J ) The following issues were discussed and the decisions/actionable points are listed below: Reactive Power Planning 9 Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. 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. Ensuring proper functioning of Under Frequency Relay (UFRs) and df/dt relays NPC opined that under-frequency relays based automatic load shedding scheme was meant to ensure grid security, and therefore, it would not be appropriate to do away with the requirement of inspection of a targeted number of relays by the RPCs in a year. Keeping in view the manpower constraints in RPC secretariats, it was suggested that instead of inspection of one-third number of total relays in a region, at least 20% of the under frequency relays installed in the respective regions should be physically inspected by respective RPCs in each year besides self-certification by the STUs. Regarding self-certification by the STUs regarding healthiness of the UFRs as per checklist proposed by NRPC, Other RPCs were requested to forward their comments / suggestions to NPC for evolving a uniform procedure across the states at the next meeting. Automatic Under Frequency Load Shedding (AUFLS) scheme: NPC expressed satisfaction that barring a few states, the revised AUFLS scheme had been implemented by the states in the country. It was decided that the RPCs would take up the matter of implementation of the scheme with the states which had not so far implemented the same and inform the progress at the next meeting. Membership of POSOCO in NPC: All the RPCs informed that the proposal of Membership of NLDC in the NPC is agreeable to them. Accordingly, The Committee requested Member Secretary (NPC) to take up with MoP the necessary amendment in the resolution of constitution of NPC. Treatment of Bilateral short term and collective transaction in case of grid disturbances The Committee felt that the matter be first deliberated threadbare among the officers at the level of SE/EE of the RPCs, who deal with the work of regional energy accounting, and a report / recommendations thereon could be put up by them during next meeting for deliberations by the NPC. Committee constituted a Working Group with following composition: Director level representative from GM Division, CEA SE/EE (Commercial) level representative from each RPC AGM level representative from NLDC Director (NPC) -Member Secretary/Convener The Working Group would examine & discuss possible options for Treatment of Bilateral short term and collective transactions in case of grid disturbances and submit 10 Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. its recommendations within two months for consideration of NPC at its next meeting. NPC requested CEA, RPCs and NLDC to nominate their representative for the above Working Group. Power swing blocking (PSB) setting in Distance relays: NPC while agreeing to NRPC's opinion to have a uniform PSB setting across all regions, decided to maintain status quo in different regions and wait for the report of the Consultant appointed for implementation of the recommendations of the 'Task Force for Power System Analysis under contingencies' before further deliberations in the matter. Review settings of df/dt relays and UFR based automatic load shedding schemes Review of df/dt relays NPC opined that in the event of a sudden loss of generation or any grid disturbance, the rate of fall of frequency would vary from one location to another, and it would also vary from one point of time to another at a particular location depending upon the distance from the location of the fault. Therefore, there could be no uniform setting of df/dt relays in different regions. In view of this, NPC decided that settings would be determined by each RPC separately after detailed study of load and generation balance in different areas of the region and communicate the same to the Committee for ratification. Review of Automatic Under-Frequency relay based Load-shedding Scheme (AUFLS) NPC decided to maintain status quo in respect of AUFLS. It was also agreed by the RPCs to initiate the process of mapping of feeders covered under AUFLS scheme like SRPC with a view to ensuring proper implementation of the scheme and also have a real time assessment of load-relief likely to be available under the scheme if it operated. Transfer capability determination by the states It was decided after detailed discussion that to begin with, power system study for assessment of operational limits / power transfer capability for each state will be done by the concerned RLDC in association with concerned SLDC. Monthly TTC/ATC will be uploaded by the SLDCs at their respective websites and also communicated to concerned RLDC & NLDC subsequently. Reasons for demand -supply gap and its variation: The reason for demand-supply gap needed to be clearly mentioned to reflect true picture of power supply position in different states and also to invite attention of various agencies including policy makers to the specific problem areas in the power sector for suitable solution. It was requested to RPCs to advise the states in their respective regions to intimate broad break-up of demand-supply gap due to various reasons, or at least, the main reason(s) for demand-supply gap in each month. It was suggested that this matter could be discussed in the OCC forum of RPCs on regular 11 Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. basis and the reasons for demand-supply gap ascertained from the States therein and communicated to CEA. RPCs agreed to take action accordingly and furnish the above information to CEA along with the power supply position related data every month. Coordinated outage planning of transmission elements: NLDC stated that they were experiencing difficulty in coordinating planned shutdown of inter-regional lines with the concerned RPCs as some RPCs were approving shutdowns early in the month, while other RPCs were doing so somewhat later in the month. Keeping in view the specific issue raised by NLDC, it was agreed that all RPCs would conduct OCC meetings in a distributed manner by 15th of every month for finalising the planned shutdown of different transmission lines including inter-regional ones for the following month, and 10 days time would be allowed to NLDC to finalize TTC/ATC etc. of various inter-regional corridors taking approved shutdowns into consideration. Fund Requirement for NPC It was agreed that for the time being, expenditure towards hosting the various meetings of NPC meetings would be met by RPCs on rotational basis. Common Commercial Input data formats for all RPCs (Agenda from WRPC): It was decided that the committee formed for finalization of methodology for treatment of collective transactions may also look into this issue and formulate a uniform accounting philosophy in Regional Energy Accounts being prepared by the RPCs. PSS tuning: The Enquiry Committee constituted by GOI to enquire into grid disturbances of July 2012 had recommended proper tuning of electronic devices and PSS of generators. Accordingly, NRPC submitted their recommended procedure to NPC for comments I adoption by other RPCs so as to bring uniformity across all the regions. It was agreed that other RPCs would examine the proposal of NRPC and will revert back in the next NPC meeting. 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 6.2 Low Frequency a) 12 Summary statement of different violation messages issued by SRLDC to each constituent as per new IEGC Amendment. Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. b) 7. 7.1 Summary statement of Deviation & Zero-Crossing Violation messages issued by SRLDC to each regional entity as per new IEGC Amendment (Item No. 1(a) of enclosed SRLDC letter dated 29.01.2016) Voltage Profile Low Voltage a) Low voltage at Bengaluru, Trichur, Palakkad, Udumalpet, Cochin & Trivandrum b) Action to avert low voltage profile. Messages and letters issued by SRLDC. c) Details of Capacitors installed in January 2016. Details of the healthy/faulty capacitors to be furnished. d) Status Review of Implementation of UV Relays at identified locations. Udumalpet Area in Tamil Nadu Automatic Operation of UV Relay scheme in 220 kV stations of Karnataka. Details of UV Relay operation when Bangalore voltage went below 380 kV on 12th January 2016. (Item No. 2 (a), (b) & (c) of enclosed SRLDC letter dated 29.01.2016) In last OCC meeting, the following were noted: KPTCL: UV relay implementation under review. KSEBL: Revised set points had been implemented. TANTRANSCO: May take around 6 months to complete the implementation of UV relays in their control area because of issues in purchasing relays. PGCIL: Have extended the signal to Myvadi substation as desired by TN. 7.2 Both KPTCL and TN were asked to implement the UV relays within 15 days or approach appropriate forum for time extension. High Voltage a) High voltage at Vijayawada, Hyderabad, Nagarjuna sagar, Gooty, Kurnool, Khammam, Malkaram, Hassan, Mysore etc. b) Messages and Graphs. c) Status review of implementation of generator GT tap changes as per Special MVAR Meetings and previous OCC Meetings. Tap changes for the following units were pending: Station Unit Present tap and corresponding voltage(in kV) Recommended Remarks Tap and Corresponding Voltage(in kV) ISTS connected Generators: Kaiga I 1&2 6 & 229.125 7 & 223.25 Kaiga II 3&4 3 & 409.5 4 & 399 The issue of tap change was under consideration of Higher management. APGENCO/APSLDC 13 Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. Upper Sileru IPPs of AP 1 7 & 226.6 4&220 2 8 & 228.8 4&220 To be changed to position 4 during next opportunity. Tap position is locked at position 8 since 2010. It is recommended that all IPPS under APSLDC could be advised to change their Tap position corresponding to voltage level of 220 kV. TSGENCO/TSSLDC KTS 2, 3 &4 11 & 225 220 5, 6, 7&8 13 & 228 220 1 9 & 222 10 & 220 would be changed within 2,3,4,5,6,7 & 8 7 & 222 8 & 220 10 days Nagarjunsagar Observed rotor core problems due to more absorption for GT tap of 220 kV UAT voltages are going down which are without Taps for the recommended voltage level. KPCL/KAR SLDC Kadra PH 7 & 225.5 8 & 222.75 Kodasalli 7 & 225.5 8 & 222.75 9 2 & 231 4 & 220 1&2 4 & 409.5 5 & 400 1,2, 3 & 4 10 & 412 11 & 400 JSWEL change. All units 2 & 231 1 & 236.5 Mock test on 18.11.2015. KSEBL to study and revert back 1 4 & 220 3 & 225.5 Sharavati UPCL JSWEL KPCL informed that tap could not be changed due to technical problems. Observed rotor teeth temperature issues and OEM was called. OEM expected during June/July 2016. Need for reactor taken up with CEA. agreed for tap KER SLDC Idukki HEP Lower HEP 14 Periyar Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. Sabarigiri HEP 1,2 & 5 220 225.5 GT taps cannot be changed with Present GTs. Replacement of GTs was being carried out. After replacement KSEB would go for tap change. GT part replacement was over. TANGEDCO/TN SLDC Tuticorin TPS 1,2,3,4 & 5 8 & 243 230 Mettur TPS 1,2, 3 & 4 7 & 235.5 7 & 235.5 MTPS St.III 1 6& 409.7 7 & 399 TANGEDCO/TNSLDC confirmed they would change during the next opportunity The issue of high voltages & additional reactor at KGS was discussed in the special meeting held on 20.10.2015 and it was decided that NPCIL would expedite the commissioning of 125 MVAR Bus Reactors. 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 as per the corresponding capability curve. d) Tap optimization of ICTs in SR SRLDC had taken up the task of Tap optimization of all ICTs in SR. As of now SRLDC had done the tap optimization of 765/400kV, 400/200kV ICTs. To optimize tap position of all 220/132kV and 230/110kV transformers, tap information (number of taps, nominal tap position and present tap position) of all 220/132kV and 230/110kV transformers is required. It was requested by SRLDC that tap information of all 220/110kV and 230/110kV transformers in the respective control areas may kindly be provided as early as possible. (Item No. 3 (b) of enclosed SRLDC letter dated 29.01.2016) e) Submitting MVAR performance & Nodal officer details of LANCO ST 3- reg. In the 115th OCC Meeting it was pointed out that the information for analyzing the MVAR performance was not being submitted by LANCO KPPL and the Nodal officer details to communicate the MVAR webgroup details also were not available. SRLDC vide letter dated 28.01.2016 (Annexure-7A)had communicated to LANCO in this regard and had requested that the needed information for MVAR analysis(by 5th of every month) along with Nodal Officer contact details may kindly be communicated at the earliest. It was also requested to ensure that GT TAP positions of LANCO St 3 Units are changed to 400 kV Voltage level during next shutdown period. . f) Status review of Bus/Line Reactors, Line Reactors and STATCOM As approved by 36th Standing Committee meeting. Status of commissioning of Bus Reactors: As per 114th OCC meeting: KPTCL: Hoody and Nelamangala reactors were expected to be commissioned by December 2015. g) Possibility of Reactor at Srisailam: 15 Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. h) 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. Reactive power Planning Voltage level Remarks Utility APTRANSCO 32x7.5 4x14.4 33 kV side of 132/33 kV Capacitors installed: 220 kV Ananthapur S/S : 7.2 MVAR 133 kV Kadri S/s : 7.2 MVAR 220 kV Nandyal S/s : 7.2 MVAR 132 kV YG Palem S/s: 7.2 MVAR APEPDCL APSPDCL TSNPDCL TSSPDCL Karnataka Srikakulam : 5 x 2 MVAR 33/11 kV Vizianagaram : 2 x 2 MVAR level Visakhapatnam : 5 x 2 MVAR Rajahmundry : 10 x 2 MVAR Eluru : 4 x 2 MVAR April 2015 : 11x2MVAR 11 kV level May 2015 : 16 x2 MVAR July 2015 : 1 x2 MVAR Aug 2015 : 2 x2 MVAR Sep 2015 : 2 x2 MVAR Oct 2015 :0 Nov 2015 : 0 248 x 2 MVAR 249 x2 MVAR 11 kV level 179 x5 MVAR 33 kV level 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 Kerala 15 MVAR 66 kV TANGEDCO 34 x 2.4 MVAR 11 kV level 16 x 2.4 MVAR 22 kV level 7 x 24 MAVR 110 kV level 16 APEPDCL Vide letter dated 04.11.2015 had furnished the details. 81 x 1 MVAR and 80 x 2 MVAR capacitor banks commissioned at 11 kV level. Orders had been placed for 248 x 2 MVAR capacitor banks and planned to be commissioned by Mar 2016. LoA issued on 29.04.2015 for 221 x 2 MVAR capacitors at 11 kV level with supply schedule of 4 month. 28 MVAR installed upto December 2015. Tendering under way Total of 1544 MVAR which were planned to be implemented .new PO is placed. Bangalore Zone had been retendered PO Under Progress Materials received by December 2015(All voltage levels) Installation works would start by January 2016 and may be commissioned by March 2016 Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. 780 MVAR of capacitors at distribution level had been commissioned out of 1,005 MVAR capacitors planned. 2.4 MVAR capacitors at Somalapauram had been commissioned on 30.06.2015. All the states were requested to finalize the schemes at distribution level and submit to CEA/SRPC. i) Status Review of Implementation of MVAR Capability testing recommendations. j) In the Special Meeting on RGMO/FGMO/MVAR it was decided that MVAR data of previous month should be posted by 5th of next month. (Item No.3 a),(b),(c) & (d) & item 4(c) of enclosed SRLDC letter dated 29.01.2016). 8. 8.1 8.1.1 Network Protection / Security issues: AUFR, df/dt Implementation of SRPC recommended quantum It was noted that all the States had implemented AUFR and df/dt schemes fully. All the Constituents were requested to furnish all the feeders implemented in AUFR & df/dt schemes along with the status of SCADA mapping as per the specified Formats. Load availability in the implemented AUFR & df/dt feeders The issues of raising of UFR settings to 49.4 Hz was deliberated in the NPC Meeting held on 10th December 2015. NPC had decided to maintain status quo in respect of AUFLS. It was also agreed by the RPCs to initiate the process of mapping of feeders covered under AUFLS scheme like SRPC with a view to ensuring proper implementation of the scheme and also have a real time assessment of load-relief likely to be available under the scheme if it operated. 8.1.2 SCADA mapping of feeders of AUFR &df/dt schemes: SRPC vide letter dated 29.01.2015 had submitted the status report duly certified by SRLDC and SRPC w.r.t implementation of SCADA mapping of all the constituents to Hon’ble CERC. SCADA mapping conformation report of KSEBL had also been submitted to Hon’ble CERC. 8.1.3 As per clause 9 (2) of CEA (Grid Standards) Regulations, 2010, all constituents shall submit a detailed report of operation of UFR/ Operation at different frequencies to SRLDC and SRPC on daily basis. (Item No.6 (a) of enclosed SRLDC letter dated 29.01.2016). 8.2 8.2.1 8.2.2 Special Protection Schemes(SPS) Implementation of additional loads for SPSs Based on the additional requirement of 1500 MW as per NLDC, SRPC vide letter dated 15.09.2015 had furnished the details of additional relief requirement and sharing. KKNPP U2 SPS loads could be identified by Jan 2016 & implemented by March 2016. States, SR-I & SR-II needed to take immediate action in this regard. 8.2.3 The following were deliberated in the earlier Meetings: 17 Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. Mock Testing of signal extension w.r.t TANTRANSCO, KSEBL & KPTCL had been carried out on 13.10.2015 for additional requirement of SPS loads of 1500 MW as per NLDC and was found successful. TSTRANSCO had identified the loads of 875 MW under to Veltoor, 400/220 kV Gajwel S/S, 220 kV Budidampadu S/S and 220 kV RSS S/S. All DTPCs had been installed in TSTRANSCO identified substations. The wiring related works had been completed and signal testing had to be carried out. Field people were on the job to complete the works All DTPCs had been installed in the respective TSTRANSCO identified substations including at Kolar. The link configuration from Kolar to Kurnool 400 kV S/s of APTRANSCO had already been done. Part linking from Kurnool 400 kV S/s to respective TSTRANSCO stations had been coordinated. Connectivity wiring between DTPCs and relays at respective Telangana stations had to be carried out by TSTRANSCO. PGCIL needed to extend signal from Kolar to TS DTPCs. Once the logic from NLDC is received, wiring and further necessitated actions could be completed. Also Kudankulam Unit II was expected by April 2016 and all constituents should identify the feeders for the quantum envisaged. 8.2.4 Modification in SPS of Talcher-Kolar: NLDC vide letter dated 07.09.2015 had communicated that there were no changes in Talcher-Kolar SPS. Subsequently SRPC vide letter dated 10.09.2015 had requested NLDC reconsider the Talcher-Kolar SPS modifications. 8.2.5 Udumalpet-Palakkad SPS In the Meeting 115th OCC Meeting the following was noted: SRLDC informed that two SPSs are required one for n-1 condition for a load of above 874 MW (300 MW Load relief required) and the other when both the Udumalpet-Palakkad goes in which case ICTs get overloaded and Mysore/Kozhikode line may trip. SRPC suggested that SRLDC/KSEBL would establish the requirement based on studies and subsequently commissioning activity could be taken up. Subsequently a Joint study Meeting has been scheduled to be conducted 03.01.2016 at SRLDC Bengaluru. KSEB vide E-mail dated 29.01.2016 had requested that the meeting proposed may be held using video conferencing facility and it was mutually agreed. 8.2.6 SPS operations In 110th OCC meeting, it was noted that SRLDC would furnish SPS operation details along-with relief obtained in each OCC for previous month. 8.3 Status Review of Automatic Demand Management System 8.3.1 Automatic Demand Management Scheme in line with clause 5.4.2 (d) of the IEGC was to be provided by all the constituents by 01.01.2011. It was noted that Hon’ble CERC had issued show cause notice under Section 142 to many constituents (all the SLDCs of SR) in its ROP in Suomotu Petition No. 005/SM/2014. 18 Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. 8.3.2 ADMS logic to be implemented as agreed in the 28th SRPC Meeting held on 10.10.2015 at GOA: overdrawal >250 MW or 20% of schedule whichever is minimum & sustained for >15 minutes when frequency is <49.8 Hz. 8.3.3 In 115th OCC Meeting it was noted that as suggested by SRLDC in the 114th OCC Meeting a mock test for ADMS demonstration was conducted for Karnataka & Kerala on 18th December 2015, for Puducherry on 21.12.2015 and for AP& TS on 5th January 2016 to check the Logic extension and all had communicated in this regard. It was noted from the letter of KSEBL & KPTCL that the current settings were not as per the settings agreed in the SRPC meeting. All the constituents were requested to furnish the actual implemented logic with block diagram so as to verify that the implementation is as per recommendation. SRLDC vode E-mail dated 20.01.2016 had taken up this with KSEB and KPTCL. 8.3.4 8.3.5 8.4 TANTRANSCO had informed that ADMS would be implemented within 6 months time. SRPC had stated that TANTRANSCO should implement ADMS scheme within 15 days or may approach CERC for extension. It was noted that the timelines given for implementation had exceeded and the present status needed to be reported to Hon’ble CERC. It was expressed that SRLDC/SRPC may have to report the non-compliance otherwise. (Item No.1 (b) of enclosed SRLDC letter dated 29.01.2016). LVRT/Provisions of CEA Regulations for Renewable 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. In the 115th OCC Meeting it was suggested that a Special Meeting may be convened to deliberate/chart out the way forward for implementation of directions of Hon’ble Commission and facilitate secured Grid Operation. Accordingly a Meeting is scheduled to be conducted at SRPC Bangalore on 05.01.2016 at 11:00 hrs. (Agenda and Meeting notice is available at SRPC website) . SLDCs are requested to inform the concerned officials handling the issues and also requested to attend the Meeting. (Item No. 6(d) of enclosed SRLDC letter dated 29.01.2016). 8.5 8.6 Status review of action for grouping of loads (IEGC clause 5.4.2 (e) 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.6 (e) of enclosed SRLDC letter dated 29.01.2016). 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 (Item No.7 (h) of enclosed SRLDC letter dated 29.01.2016). 8.8 Status Update on Emergency Restoration System (ERS) th th 19 Agenda for 116 OCC Meeting of SRPC to be held on 10 February 2016. As per ERS requirement outlined in MoP letter dated 05.12.2014 status update on ERS is given below: 8.9 Transmission Utility Requirement as per MoP APTRANSCO 3 Nos. TSTRANSCO 1 No. KPTCL KSEB 2 No. 1 No. TANTRANSCO 2 Nos PED PGCIL Nil 4 Nos. ( 2 Nos additional) Existing Status/Remarks ERS I – Inspection completed by 18.08.2015 was expected by December 2015 which would be kept at Nellore. ERS II – Inspection completed by 22.11.2015 and expected by February 2015 which would be kept at Vizag. ERS For 3rd ERS, tendering process had been initiated. Procuring 1 No. of ERS and it would take 10-12 months. 2 Nos. 1 No. was being taken up by their transmission wing and was put up for Budgetary approval. Demo had been given by Vendor. Estimate to be prepared and would be submitted to Board. 2 Nos (SR I & SR II was having 1 No. each) SR I & II, PGCIL informed that work has been awarded to procure ERS at 400 kV level. SR II informed that it was planned to locate at Somanahalli location may be reviewed according to requirements. SR I informed that one ERS was planned to locate at Vijayawada Status review of Implementation of Protection Audit/PCC recommendations as mentioned in various CERC orders. Phase-I & Phase-II activities identified in Protection Audit needed to be completed as per the time limits given by Hon’ble CERC through its various orders as below. Progress of the implementation needs to be submitted to SRPC/SRLDC in a time bound manner. Constituent CERC Petition No. / Date of Order APTRANSCO 95/MP/2015 Date of Order : 27.4.2015 83/MP/2015 Date of Order : 14.5.2015 86/MP/2014 Date of Order : 18.8.2015 TSTRANSCO KSEBL 20 Date for Date for completion completion of Phase-II activities Phase-I activities 31.12.2015 31.12.2015 31.10.2015 31.08.2016 31.12.2015 31.3.2016 for R&M works at Idduki HEP Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. TANTRANSCO 374/MP/2014, 86/MP/2014 NLC KPTCL KPCL 30.6.2016 30.11.2016 Date of Order : 18.8.2015 86/MP/2014 Extracts of Order: Date of Order : 18.8.2015 “It is noted that the completion dates for Phase-I and Phase-II of protection audit remarks as requested by NLC are already over. Therefore, no direction is required in this regard. However, we direct NLC to file a confirmation report regarding completion of protection audit works for Phase-I and Phase-II.” 86/MP/2014 15.1.2016 15.1.2016 Date of Order : 18.8.2015 86/MP/2014 31.10.2015 31.12.2015 Date of Order : 18.8.2015 The following stations are scheduled to be audited shortly: Sl.No Name of the Station 1 NLC TPS-II Station Period of Audit 8 – 10th February, 2016 2 Nelamangala SS of KPTCL 8th – 10th February, 2016 3 Gooty SS of PGCIL (SR-I) 12th,13th and 15th February, 2016 4 Kurnool SS of APTRANSCO 16th – 18th February, 2016 5 Ramagundam Station of NTPC 18th - 20th February, 2016 th (Item No.6 (i) of enclosed SRLDC letter dated 29.01.2016). 9. SCADA & Communication Issues: a) Pending SCADA field inputs under ULDC scheme. b) Talcher St-II SCADA data: c) 400 kV SR I & SR II stations –Redundant data channels. d) Reliable/dedicated internet communication for SR constituents. e) Status Review of New SCADA implementation, DCPC communication etc. f) AP, TS, KER & TN to validate the status points of 220 kV & 400 kV stations in Alstom SCADA (new) on urgent basis. g) Ensure Real time data of renewable generation by all constituents to SRLDC h) SRLDC vide letter dated 16.10.2015 had reported to SRPC as per the provisions under clause 1.5 if IEGC 2015 for ensuring availability of SCADA data in compliance of Regulation 4.6.2 of IEGC. (Item No. 8 of enclosed SRLDC letter dated 29.01.2016.2015) 21 Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. i) In the meeting, SRLDC presented the action taken report on the recommendations of the special meeting (19.11.2015) and the update is as below: Action to be taken Progress with Remarks Point no. in Conclusio n 11 Schedule for checking links between RTU- SR I confirmed dates from 21st DCPC and DCPC-Control Centre to be Dec, some links checked given by Powergrid (Raichur, Kurnool). SR II yet to respond. Matter was taken up at 115th OCC meeting in Dec 2015, followed by IOM from AGM (SCADA) SRLDC to POWERGRID SR –I & SR –II. Further action is awaited from SR–I & SR–II. 2 ICCP Standby link healthiness to be AP ICCP standby link provided checked and made available by Powergrid and healthy. KSEB and for AP, KSEB and Puducherry by 23rd Nov Puducherry standby link to be 2015 made through. 3 Personnel to be deputed by SRTS-II and Not completed. SR-II has taken SRTS-I to give schedule by 23rd Nov 2015 details and will revert back. SRto attend Data discrepancy issues in I has provided schedule and SRLDC. States to respond regarding the testing started from 21st same. Dec.2015 Raichur & Kurnool S/s testing done. Matter was taken up at 115th OCC meeting in Dec 2015, Followed by IOM from AGM (SCADA) SRLDC to POWERGRID SR –I & SR –II. Further action is awaited from SR–I & SR–II. SR-I SR-II. 4 All pending communication links for Nagarjusagar presently Ramagundam, Simhadri Stg II, Warangal, reporting on dual channels. Nagarjunsagar to be made available by Other links still not provided. 30th Nov 2015. 5 Communication Network Diagram for RTU- Yet to provide. DCPC and DCPC-Control Centre to be provided by Powergrid by 30th November 2015. 6 SRTS-I to come up with means for Yet to come out with details. establishing backup link for Bhadrawati RTU to SRLDC by 30th November 2015. 7 8 22 Communication channels for VC facility from SRLDC to NRLDC and NLDC to be provided by Powergrid. KPTCL to make facilities regarding converter PGCIL will initiate action to establish Backup SLDC to Backup SRLDC links. No intimation regarding the same. No intimation regarding the same. Presently Main Puducherry is connected to Back up SRLDC(link is tested, Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. ICCP configuration to be done) 9 Talcher NTPC data to be made through to SRLDC after installation of RTU in Talcher by NTPC. SRLDC to take action in replacing copper cable with optical fibre between SLDC, KPTCL and SRLDC. 10 NA SRLDC and KPTCL SCADA are interacting on F. O LAN. In the 115th OCC Meeting it was agreed that Shri Harish Nair, Chief Manager, SR II would be available at SRLDC on 18th January 2016 to address all the SCADA related issues. j) PMU installed at Back to Back HVDC locations: In the 113th OCC Meeting SRLDC had informed that bus voltage had been extended to East Bus. Presently communication channel was faulty at Gazuwaka which was to be rectified by PGCIL. SRLDC official had visited Gajuwaka SS on 8th October 2015 in this regard. k) 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. UPCL, MAPS, & KKNPP had been requested to furnish the compliance status of pending SCADA inputs within 15 days. UPCL had informed that LV side data is extended to SLDC and KPTCL stated that they would revert back on visibility in their LDC. KKNPP had informed that out of 13 pending points only 2 points are pending w.r.t GT tap position. Retendering is going on and it will take 5 more months to be completed. Following clarification was furnished regarding pending KGS-1 to 4 pending telemetry points: KGS-1, 2, 3& 4 Start up transformers (SUT-1, 2, 3 & 4) have on load tap changers and they are working on for extending the tap position indication of SUT-1, 2, 3, SUT-4, ICT-1 & ICT-2 to SRLDC by using dual output transducers units. During KGS-4 annual shutdown in Oct 2015, dual output transducer is installed in SUT-4. Subsequent to completion of wiring up to RTU panel in Kaiga switchyard, SR-II, PGCIL has been informed for carrying out necessary SCADA point configuration. Job on other transformers will be completed in next planned shutdown of these equipments. KGS-3&4 Generating transformers GT 3 to 4 have off-load tap changers and do not have provisions for extending tap position signals. The proposed scheme at KKNPP was also reviewed and found it is not feasible to extend GT-3 & GT-4 tap position signals. Status update 10. Physical and Cyber Security/Crisis Management Plan/Black Start Procedure 23 Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. 10.1 10.2 10.3 10.4 10.5 10.6 10.7 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, 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 (mssrpc-ka@nic.in & seoprnsrpc-ka@nic.in). APTRANSCO, TANTRANSCO, TANGEDCO, KSEB, NPCIL, KPCL, NTECL, NLC, SRLDC, KPTCL, TSTRANSCO & TGGENCO had submitted the CISO Nominations. Others are requested to furnish the same. Updated list of Nodal Officers for Disaster Management. Constituents to update the list (if any change). Development of Mock exercise procedure for individual Stations/Systems. Status Review of BSRP for individual states including Railway /Metro. Meeting to discuss disruption of power supply affecting Metro Services. KAR SLDC to update on actionable points of the meeting held on 31.12.2016 Constituents to submit proposed Black Start mock drill schedule for first half of the year 2016. Islanding Scheme: Priority for Railways in the matter of Restoration of Supply. KPTCL had informed that hotline to SLDC was pending. KSEBL had informed that CMP procedures for Kochi Metro would be developed. 10.8 10.9 TSTRANSCO had informed that they were planning to have meeting with Hyderabad Metro after Assembly session. Point to point mock exercise to be conducted for black start by all constituents Point to Point mock drill to be conducted for Nellore Generation hub. (Item No.8 (a), (b), (c), (d), (e) ,(f) & (g) of enclosed SRLDC letter dated 29.12.2015) 10.10 Emergency Preparedness for restoration of Remotely Controlled Sub Stations: SRLDC had requested that emergency preparedness procedure for restoration of unmanned substations may be submitted by PGCIL which was being insisted by SRLDC since when first unmanned station was commissioned. In the 114th OCC Meeting SRPC had requested SR-I & SR-II to escalate the issue to their Higher Management/Corporate and if required the issue would be taken up with the Higher Management of PGCIL. In the 115th OCC Meeting, SR II, PGCIL informed that the issue had been appraised to their Corporate. (Item No.8 (a), (b), (c), (d), (e) ,(f) & (g) of enclosed SRLDC letter dated 29.12.2015) 11. RGMO / FGMO: 11.1 Status Review of RGMO / FGMO implementation and performance in SR. Status of RGMO to be updated for the following units: Mettur TPS St-III Unit Hinduja Unit – I Bellary TPS Unit – III Kakatiya TPP Stage II Unit I Coastal Energen Unit II 24 Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. Status review of effecting changes in RGMO settings as per IEGC amendment by all the generating stations. RGMO response had been deliberated in the Meetings held on 29.06.2013, 25.07.2013, 21.08.2013(Special TCC), 30.09.2013, 29.01.2014, 23.06.2014, 27.08.2014 & 30.09.2015. Issue had been further highlighted in the 27th TCC/ 28th SRPC Meetings held on 10th/11th October 2015 at Goa. Inadequate response was an area of serious concern and there was no noticeable improvement. Implementation of direction for RGMO of CERC as per Order in Petition No. 302/MP/2013 dared 23.10.2015 11.2 RGMO status point to SRLDC/SLDC: APTRANSCO: Upper Sileru (Cable problems) & Machkund (RTU problem) stations.It was noted that Hinduja Unit -1 (520 MW), which was synchronized to grid during 25thDec 2015 was yet to confirm implementation of RGMO. Hinduja was required to confirm availability of RGMO complying IEGC Regulations. APTRANSCO would follow up with HNPCL for IEGC compliance. TSTRANSCO: Status points were done for Thermal units. Status on Hydro units. KTPP St 2 Unit had come with RGMO and it was enabled. TANTRANSCO: MTPS- I & II, MTPS St-III & Hydro stations. It was noted that a separate Meeting may be called with MTPS St3 officials to discuss the RGMO implementation and other operational issues since there was no representation of MTPS Stage -3 in OCC/RGMO & MVAR meetings. KPCL: Taking up with the Management and they would extend the status point of all thermal units except Unit 4 of RTPS as it was under Japanese OEM. Status points of all hydro units like Almathy, Kadra & Gerusoppa HEPs to SLDC had been made available but yet to be configured to SLDC. RGMO was implemented in BTPS U-3 and has been enabled. The RGMO Status of State Generating Stations(consolidated table) may be made available to SRLDC through ICCP. (Item No.4 (a), (b), (c) & (d) of enclosed SRLDC letter dated 29.01.2016) 12. Transmission Network Issues and System Operation Issues 12.1 Instantaneous scheme for Wind generation withdrawal in Tamil Nadu system A Special Meeting was held at Chennai on 20th July 2015 to discuss Wind Withdrawal and other pending issues pertaining to Tamil Nadu grid. Minutes of the Meeting are available at SRPC website. In 110th OCC meeting, TANTRANSCO had informed that 500 MW of loads have been identified for instantaneous tripping. The tripping signal would be initiated through RTU during dead bus condition at Udumalpet & Kayathar SS. They were planning to extend this scheme to other wind substations also which would be implemented in due course of time. TANTRANSCO was requested to furnish schematic details of the scheme. In the 113th OCC Meeting TANTRANSCO had assured that the scheme would be implemented by December 2015. In the 115th OCC meeting TANTRANSCO informed that the implementation of scheme would take 6 months time. Subsequently Hon’ble CERC in its Order dated 05.01.2016 on Petition No. 420/MP/2014 had stated “In our view TANTRANSCO has failed to comply with the 25 Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. Commission's direction given in order dated 22.2.2014 in Petition No. 120/MP/2011. Accordingly, we direct SLDC, Tamil Nadu to explain the reasons, on affidavit, by 29.1.2016 as to why action under Section 142 of the Act should not be initiated against it for non-compliance with the provisions of the Grid Code and order of the Commission.” (Item No. 6(c) of enclosed SRLDC letter dated 29.01.2016) 12.2 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). In the 115th OCC Meeting the criteria for putting the generating units/Transmission elements in prolonged outage criteria was discussed. The following was approved: In case of Annual Maintenance: i. Generating units - Revival beyond five days of scheduled period. ii. Transmission elements - Revival beyond two days of scheduled period In case of forced outages: i) Generating units - Revival beyond five days of tripping. ii) Transmission elements - Revival beyond two days of tripping. 12.3 Non operation of Auto reclosure 12.3.1 400 kV Ramagundam-Chandrapur line In the Meeting, SR I, PGCIL appraised that the scheme of both the lines at Bhadrawati have been checked for its correctness and functionality. Fault was created and the A/R was found to be healthy. However implementation of the same shall be taken up after obtaining required codes from SRLDC. Bhadrawati group is requested to coordinate and take up the issue for implementing the Auto reclose scheme after obtaining required codes from RLDCs. It was noted that SR I PGCIL had requested HVDC Bhadravathi to confirm on the action plan for implementation of the A/R scheme on Ramagundam Chandrapur-D/C lines at Bhadrawati end. It was noted that they had already confirmed that the scheme was ready. 12.3.2 230 kV Neyveli –Villianur & 230 kV Neyveli – Bahoor NLC and PED confirmed healthiness of A/R feature for both the lines. PLCC communication was an issue. SR-II, PGCIL had informed they were agreeable for PLCC up gradation at their own cost and proposal had already been initiated and it would take 5-6 months from completion. In the 114th Meeting PGCIL informed that PLCC panels were ready and procurement of protection couplers was going on. One spare protection coupler at Sriperumbudur could be used and the works would be completed by end of January’2016. PGCIL, SR II was requested to coordinate with NLC and Puducherry for extended ZoneI protection. 12.4 400 kV Kaiga - Guttur 26 Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. SRLDC/SRPC pointed out that Kaiga GS had already agreed in the earlier TCC Meeting that they would enable the auto-reclose in all the lines at Kaiga and it needed to be commissioned at the earliest without linking it to other activities. KGS had informed that A/R scheme was enabled for Kaiga-Narendra I & II line and they would implement A/R feature for Kaiga-Guttur lines after stabilization of lines. 12.5 BHAVINI – Siruseri SRLDC vide letter dated 11.09.2015 had taken up with BHAVINI to ensure enabling the A/R feature on immediate basis and the reply was awaited from BHAVINI. TANTRANSCO had confirmed that A/R feature was available at Siruseri end. It was noted that in the Meeting held at MAPS, Kalppakkam on 16th December 2015 it was informed by BHAVINI that they will revert back in this regard. 12.6 Status of A/R for MAPS connected schemes. 12.1.1 A/R feature for 220 kV inter regional lines Chikkodi-Mudshingi/Talangde & AmbewadiPonda lines. Regarding Chikkodi- Mudshingi/Talangde lines KPTCL had confirmed that at load end (Chikkodi) A/R was not in service because of some relay replacement issues which would be completed by month end. As soon as the relays were replaced A/R would be energized at Chikkodi end by January 2016. It was noted that at Mudshing A/R was in service. Regarding Ambewadi-Ponda KPTCL had informed that the R&M works were going out for this line and the A/R would be covered in R&M works. 12.2 Review of operation of Inter Regional & Intra Regional Line. 220 kV Upper Sileru- Balimela line. 220 kV Raichur- Jurala-Veltoor in grid mode 220 kV Ambewadi-Ponda (Item No. 5(a), 5(d), 5(e) & 5(g) of enclosed SRLDC letter dated 29.01.2016) 12.3 Status update of commissioning of 400/220 kV ICT at Kudgi, NTPC. 13. Reconciliation of Schedule within the same shift by Regional Entity. (Item No.12 (a) of enclosed SRLDC letter dated 29.01.2016.) 14. Violation of CEA Grid Standards (Item No. 13 (a) of enclosed SRLDC letter dated 29.12.2015). 15. Upcoming Generating Stations: CGS/ISGS Station 27 Unit IC in Schedule Remarks Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. M W NTPC Kudgi Stage-I TPS I,I, III 3x800= 2400 NPCIL Kudankulam II Nuclear Power Project (KKNPP) Stage-I Unit-I :Syn. by Mar’16 & CoD by Sep’16 Unit-II : Syn. by Oct’16 & by Mar’17 Unit-III : Syn. by Mar’17 & CoD by Jul’17 1000 Unit-II Synchronization April’16 500 CoD by Sep’16 : by BHAVINI Kalpakkam (PFBR) I State Sector/IPPs Station Location Owner IC in MW SCH/Remarks Rayalaseema TPS ST-IV Meenakshi PH-II AP State 600 COD by Dec 2016 AP IPP 700 East Coast Energy Thermal Powertech AP IPP 1320 AP IPP 1320 NCC, Krishnapattnam AP IPP 1320 MPP 2x317 2016-17 Untied : 640 MW 2015-16 AP : 300 MW Unit-I: COD declared on 02.03.2015 Unit-II : COD declared on 15.09.2015 Unit-III : 2016-17 AP: 230.55 (25 years) TS: 269.45 (25 years) TS: 200 MW(1 year) Untied: 540 MW Unit I: COD by 2015-16 Unit II: Synchronization by Sep. 2016 AP: 500 MW (Firmed up. PPA to be signed) Unit 3A: Achieved full load on 07.08.2015 Unit 3B: Achieved full load on 05.09.2015 IPP 2x384 LANCO AP APAP Kondappalli(Stage III) (CE GMR Rajahmundry Energy Limited Stage II (GREL) 28 AP U1: Achieved 12.09.2015 Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. Full Load on Hinduja NPCL, Vizag Bellary TPS U-3 AP IPP 1040 Synchronized on 06.12.2015 KAR State 700 Yeramarus TPS KAR State 1600 Costal Energen TN IPP 1200 IL & FS TN IPP 1200 Kakatiya TPP St-II TS State 600 Singareni TS IPP 1200 First synchronization to Grid on 25.12.2015. CoD expected by February 2016. Unit-I: First synchronization by January 2016.COD by Feb’2016. Unit II: COD by May’ 2016. Unit I: 558 MW tied up with TN(15 years) Unit II: First synchronization on 28.12.2015. Unit-I: COD declared on 29.09.15. 540 MW tied up with TN up to 2028. Light up with oil started on 07.12.2015 and first synchronization on 15.12.2015. CoD expected by January end. FL had been achieved on 31.12.2015(CEA vide letter dated 31.12.2015 is at Annexure-15A. TSGENCO vide letter dated 31.12.15 (Annexure-15B) communicated the details required prior declarion of CoD. Unit I: CoD by April 2016 Unit II: CoD by June 2016 16. (Item No.11 (a) & (b) of enclosed SRLDC letter dated 29.01.2016) KKNPP Related Issues : SCADA Inputs to be ensured from KKNPP KKNPP representative informed that out of 13 pending SCADA points, 11 points were extended upto RTU. Need for additional Reactors. The issue was deliberated in the special meeting held on 20.10.2015 and it was decided that KKNPP would take suitable measures to ensure that no VAR injection takes place (from LV side) at voltages greater than 400 kV. SRLDC pointed that KKNPP was not neither absorbing MVAR ( upto agreed 150 MVAR) nor installing Reactors and high voltages were prevailing at Kudankulam area. SRPC/SRLDC reiterated that even though reactor was not envisaged in the planning condition, as per IEGC Regulations reviewing the present conditions subsequently also reactor needed to be installed if found necessary. It was emphasized that reactor could be put at Madurai end or Thirunelveli end instead of putting at Kudankulam end to bring the voltage at permissible limit. Auto reclosure for KKNPP-Madurai line SRLDC pointed out that auto-reclose for KKNPP-Madurai line was also to be taken up. 29 Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. 17. After deliberations in the special meeting held on 20.10.2015 it was decided that KKNPP would come up with a suitable action plan to provide A/R on 400 kV KKNPP – Madurai line. In the 115th OCC Meeting KKNPP had informed that the response from Corporate was awaited. (Item No.12 (e) of enclosed SRLDC letter dated 29.01.2016). Constituents/Generators are also requested to furnish the following Data/Information: a. A Minimum/Maximum Demand Ratio of Constituent States. Information and measures adopted may please be shared. b. Forced outages of thermal units. c. Status of Srisailam/Kadamparai pumps mode operation. d. Installed Capacity in MW as on 31.01.2016. e. Submission of details of new elements to be provided on monthly basis in the agreed format by all the Regional Entities. (Item No. 10 of enclosed SRLDC letter dated 29.12.2015) f. Load Shedding in MW & MU carried out during January 2016 on daily/hourly basis. g. Capacity in MW of Wind Mills/Renewable (Category wise) added in January 2016 by State Sector and Private Sector - to be furnished separately. h. Generation in MU of Wind Mills/Renewable (Category wise) January 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 2015-16 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. Variable cost of ISGS: Previous month data could be furnished by Generators in the monthly OCC meetings. It is required to furnish the entire digits of energy charges as billed by the Generating Station. o. Coal Stock Position to be submitted on monthly basis by Generators (States/ISGS). p. Uploading of hourly Load Shedding details (both scheduled and unscheduled) effected in previous day by all the constituents in SR. (Item No. 13(b) of enclosed SRLDC letter dated 01.02.2016) q. Loss of generation due to coal shortage/technical problem needs to be furnished for onward transmission to NLDC by 1000 hrs on daily basis. r. 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 30 Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. format may please be arranged to be communicated to SRPC Secretariat at the following E-mail addresses: msssrpc-kar@nic.in seoprnsrpc@kar.nic.in Data to be communicated by first week of the month for previous month. s. 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 17th of the month All the constituents were requested to furnish timely status updates t. Energy Generation data Management from Renewable Energy Sources Energy Generation from RES connected to Grid is being collected by CEA from SLDCs. In the Special Meeting held on 20.07.2015 the following was noted : TANGEDCO had informed that a comprehensive scheme from the Energy Meters along with AMR was under implementation. The scheme covered 4,500 existing Energy Meters along with 8,500 new Energy Meters. On a query it was confirmed that Real Time Data (2-4 seconds) would also be available at SLDCs. The scheme was being planned through GPRS and a number of service providers were covered. This would improve the visibility of wind generation significantly and assist in judicious decision making by the operators at SLDC. It would take another 4 months to complete the scheme. SRLDC stated that the scheme needed to be integrated to New SCADA. 18. Any other point with the permission of the Chair. 19. Date 31 and Venue of the next Agenda for 116th OCC Meeting of SRPC to be held on 10th February 2016. Meeting. 10