Switching Scheme. The switching schemes, as mentioned below, shall be adopted at various voltage levels of substation/switchyard: Extension of 765/400 kV Navinal (Mundra) (GIS) One and Half Breaker One and Half Breaker Extension of 765 kV Bhuj PS (AIS) One and Half Breaker N/A Notes: -
Switching Scheme. The switching schemes, as mentioned below, shall be adopted at various voltage levels of substation/ switchyard:
i) At 765kV & 400kV voltage level, each circuit of a double circuit transmission line shall be terminated in different diameters.
ii) Transformers of same HV rating shall be placed in different diameters.
Switching Scheme. The switching schemes, as mentioned below, shall be adopted at various voltage levels of substation/switchyard: 765 kV Sikar-II PS One & half breaker (AIS) 765 kV Aligarh PS One & half breaker (GIS)
i) At 765kV & 400kV voltage level, each circuit of a double circuit transmission line shall be terminated in different diameters.
ii) Transformers of same HV rating shall be placed in different diameters.
Switching Scheme. The switching schemes, as mentioned below, shall be adopted at various voltage levels of substation/switchyard: 765/400 kV Jamnagar (GIS) One and Half Breaker One and Half Breake Double Main Extension of 400 kV Jam Khambhaliya (GIS) N/A One and Half Breake -- Extension of 765 kV Halvad (AIS) One and half breaker -- -- Notes: -
i) For one and half breaker switching scheme, any double circuit line consisting of two numbers of feeders and originating from the same transmission or generating switchyard shall not be terminated in one diameter.
ii) Two transformers of the same HV rating shall not be connected in the same diameter and similarly two bus reactors of same HV rating shall also not be connected in the same diameter.
iii) A diameter in one and half breaker scheme is a set of 3 circuit breakers with associated isolators, earth switches, current transformers etc. for controlling of 2 numbers of feeders.
iv) In case of GIS substation where the bus scheme is One and Half breaker scheme, the diameters shall be complete with feeder/line side isolator and GIS duct of the future bay shall be brought outside the GIS hall/building with extension/interface module suitably. For STATCOM bay, a separate diameter shall be provided, and that diameter shall be complete with GIS bay module suitable for termination of future 400/220 kV ICT.
v) Connection arrangement of Switchable Line reactors shall be such that it can be used as Line reactor as well as Bus reactor with suitable NGR bypass arrangement. Further, Spare 1-phase Shunt Reactor unit shall be placed and connected in such a way that the spare unit can be utilized for all the bus and switchable line reactor banks (including future reactor banks) without its physical movement.
vi) Space provision for 765 kV and 400 kV, Present as well as Future lines shall be kept considering switchable Line reactor for the lines.
Switching Scheme. The switching schemes, as mentioned below, shall be adopted at various voltage levels ofsubstation/switchyard: 400/220 kV Fatehgarh-4 P.S One & half breaker (AIS) Double Main & Transfer (AIS) Extn. of 400kV Fatehgarh-3 S/S One & half breaker (AIS) -----
i) At 400kV voltage level, each circuit of a double circuit transmission line shall be terminated in different diameters.
ii) Two transformers of same HV rating shall not be connected in the same diameter and similarly bus reactors of same HV rating shall also not be connected in the same diameter).
iii) TSP shall also keep space provision for future 220kV Bus Coupler bay and 220kV Transfer Bus Coupler bay.
Switching Scheme. The switching schemes, as mentioned below, shall be adopted at various voltage levels of substation/switchyard: 765/400/220 kV Kurnool-III PS Extn. (AIS) One and Half breaker One and Half breaker 765 kV Chilakaluripeta S/s Extn. (AIS) One and Half breaker -NA- Notes: -
Switching Scheme. The switching schemes, as mentioned below, shall be adopted at various voltage levels of substation/switchyard: Extension of 400/220 kV Jam Khambhaliya PS (GIS) One and Half Breaker Double Main Scheme Notes: -
i) For one and half breaker switching scheme, any double circuit line consisting of two numbers of feeders and originating from the same transmission or generating switchyard shall not be terminated in one diameter.
Switching Scheme. The switching schemes, as mentioned below, shall be adopted at various voltage levels of substation/ switchyard: 400/220 kV Chhatarpur Pooling Station One & half breaker (AIS) Double Main & Transfer (AIS) Notes: -
i) At 400kV voltage level, each circuit of a double circuit transmission line emanating from same substation shall be terminated in different diameters.
ii) Two transformers of same HV rating shall not be connected in the same diameter and similarly two bus reactors of same HV rating shall also not be connected in the same diameter.
Switching Scheme. The switching schemes, as mentioned below, shall be adopted at various voltage levels of substation/ switchyard: Augmentation of 765/400 kV Fatehgarh-II PS One and half Breaker One and Half Breaker -- Augmentation of 400/220 kV Fatehgarh-IV (Section-II) PS and 400/220 xX Xxxxxx-I PS -- One and Half Breaker Double Main and Transfer
i) Transformers of same HV rating shall be placed in different diameters i.e transformers of same HV rating shall not be in the same diameter.
Switching Scheme. The switching schemes, as mentioned below, shall be adopted at various voltage levels of substation/switchyard:
