Switching Scheme Clause Samples

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: 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 of substation/switchyard: Extn. of 765kV Angul Substation One & half breaker -- -- i) At 765kV & 400kV voltage level, any double circuit line consisting of two numbers feeders and originating from the same transmission or generating switchyard shall not be terminated in one diameter. ii) Transformers and bus reactors of same HV rating shall be placed in different diameters (i.

Switching Scheme. The switching schemes, as mentioned below, shall be adopted at various voltage levels of substation/switchyard: Substation 765 kV side (Future) 400 kV side 220 kV side (Future) 400 kV Bornagar (ISTS) S/s One and Half breaker One and Half breaker Double Main and Transfer i) At 400 kV voltage level, any double circuit line consisting of two numbers of feeders and originating from a transmission or generating switchyard shall not be terminated in one diameter. ii) Two bus reactors of the 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 2 (two) numbers of feeders. iv) TSP shall plan distribution of line and transformer feeders to bus bar in such a way that all power can be evacuated successfully without crossing the thermal limit at any point of bus bar. 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.

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: 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 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:

Switching Scheme. The switching schemes, as mentioned below, shall be adopted at various voltage levels of substation/switchyard: 400/220 kV Saswad One and Half breaker Double Main and Transfer i) For one and half breaker switching scheme, any double circuit line consisting of two numbers feeders and originating from the same transmission or generating switchyard shall not be terminated in one diameter. 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. 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 feeders. iv) 400 kV line bays shall be constructed such that space provision is kept for future switchable line reactors as per the site requirement. v) TSP shall plan connectivity of lines and transformers to bus bar in such a way that all power can be evacuated successfully without crossing the thermal limit at any point. vi) 400 kV line bays shall be such that provision is kept for future switchable line reactors as per the site requirement. vii) 400/220 kV AIS Saswad S/s: a) ICT- Tie- Line 2 (Two) b) Bus Reactor –Tie- Line 1 (One) c) Space Provision Future ICT* - Tie- Line 1 (One) a) 220 kV ICT Bay 1 (One) b) 220 kV line bays 4 (Four )