Location of Generating Station. Seeking Connectivity (MW) Raigarh, Chhattisgarh WR

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Hester Marshall
5 years ago
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5 Agenda for the 31 st Western Region constituents regarding Connectivity/LTA Applications to be held on Minutes of the 30th Western Region constituents regarding Connectivity / LTA Applications The Minutes of the 30 th Meeting of Western Region constituents regarding Long Term Access and Connectivity applications held on were issued vide letter dated No comments/observations have been received; accordingly the minutes may kindly be confirmed. 2.0 Agenda for grant of ISTS connectivity to LARA STPP Stage-II (2x800MW) of NTPC Ltd. (Application no ) 1) M/s NTPC Ltd. was granted connectivity to its Lara STPP-I generation project (2x800MW) located in Chhattisgarh vide intimation dated The above connectivity was granted through Lara STPP I Raigarh (Kotra) PS 400kV D/c line. Further, Long Term Access (LTA) for transfer of MW power from the Lara-I project to various beneficiaries in WR was granted to NTPC Ltd. vide intimation dated Lara STPP I Champa PS 400kV D/c (quad) line was identified for grant of LTA (along with other transmission elements). 2) M/s NTPC Ltd. has submitted the connectivity application no dated for grant of connectivity to its additional 2x800MW Lara STPP-II generation project. The Connectivity has been sought from The details of the application are given below: Sl.No 1 Name of the Applicant NTPC Ltd. (2x800MW Lara Stage-II Project) Location of Generating Station Raigarh, Chhattisgarh WR Seeking Connectivity (MW) Date from which Connectivity required Comm. Schedule ) System studies reveal that injection of additional 1600MW at the existing switchyard of Lara STPP-I generation project, which is connected both to Raigarh (Kotra) and Champa pooling stations, leads to the issue of high fault current at Raigarh (Kotra) PS (i.e. beyond the design rating of 50kA). It is also observed that majority of fault contribution comes from Champa PS through Champa PS Lara STPP (Stage-I & II) Raigarh (Kotra) 400kV D/c line. 4) In view of the above, it is proposed to provide connectivity to Lara STPP Stage-II project at Raigarh (Kotra) PS as per the arrangement given below: 1

6 Agenda for 31 st meeting of WR constituents for Connectivity & LTA Applications i. Shifting of Lara STPP I - Raigarh(Kotra) 400kV D/c line to Lara STPP-II bus so as to form Lara STPP II Raigarh (Kotra) 400kV D/c line along with associated bays at generation end ii. Lara STPP II - Raigarh(Kotra) 400kV (2 nd ) D/c line (new) along with associated bays at both ends 5) With the above arrangement, Lara STPP-I (2x800MW) shall remain connected to the ISTS through the existing Lara STPP I Champa PS 400kV D/c (quad) line (about 113km.) which shall be capable of evacuation of power from the Stage-I project. Further, it is proposed to keep the Lara STPP Stages I and II disconnected from each other in order to control the high short circuit level at Raigarh (Kotra) PS. 6) In view of the above, it is proposed to grant connectivity to NTPC Ltd. for its Lara STPP-II generation project with the transmission system given below (under the scope of NTPC Ltd.): i. Shifting of Lara STPP I - Raigarh(Kotra) 400kV D/c line to Lara STPP-II bus so as to form Lara STPP II Raigarh (Kotra) 400kV D/c line along with associated bays at generation end ii. Lara STPP II - Raigarh(Kotra) 400kV (2nd) D/c line (new) along with associated bays at both ends iii. Lara STPP-I & Lara STPP-II buses to be kept disconnected from each other under normal operating conditions With the above arrangement, the connectivity line of Lara STPP-I generation project of NTPC shall also stand revised as Lara STPP I Champa PS 400kV D/c (quad) line (existing). 3.0 Revocation of 1200MW connectivity granted to Pipavav Energy Pvt. Ltd. (PEPL) Pipavav Energy Pvt. Ltd. was granted connectivity and LTA for 1200MW vide intimation dated The LTA granted to M/s PEPL was revoked vide letter dated on account of non-signing of LTA Agreement. Further, it was informed to M/s PEPL vide the above letter that the grant of connectivity is also liable to be revoked unless it is submitted on affidavit (within 15 days) that sufficient progress has been achieved and the connectivity is likely to be used in a reasonable future (i.e. next 1 to 2 years). However, M/s PEPL is yet to submit the progress of its generating station. In view of the above, it is proposed to revoke the connectivity granted to M/s PEPL vide intimation dated Members may deliberate x x x x x x x x x x

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