Major assumptions/observations for declaration of TTC/ATC for Apr’18 to Jan’19 issued on 05.01.2018
1. Revised commissioning schedules of major inter-regional lines considered for
calculation of TTC/ATC values are as given below:
Sl. No. Month Commissioning of Major Transmission Corridor
A Feb 2018
Jabalpur – Orai 765kV D/c line
LILO of Satna – Gwalior 765kV S/c line at Orai
Orai – Orai (UP) 400kV D/c line
Orai – Aligarh 765kV D/c line
LILO of Kanpur – Jhatikara 765kV S/c line at Aligarh
B Mar 2018 Removal of 400kV bay constraints at Vemagiri
LILO of Agra – Meerut 765kV S/c line at Aligarh
C Jun 2018 Upgradation of ±800KV HVDC Bipole between
Champa Pooling Station - Kurukshetra line to 6000MW (Pole-III: 1500MW)
D Dec 2018 Upgradation of ±800KV HVDC Bipole between
Champa Pooling Station - Kurukshetra line to 6000MW (Pole-IV: 1500MW)
2. The TTC values have been calculated based on presently envisaged
schedules of various transmission lines / generation projects. TTC on various
inter-regional corridors is subject to change with change in commissioning
schedule of various transmission elements.
3. The limit of various 765kV Inter-regional corridors between WR & NR has
been considered as 3000MW under n-1 condition after commissioning of
Jabalpur – Orai – Aligarh 765kV D/c corridor between WR & NR. Limit of
Aurangabad – Solapur – Raichur 765kV corridor has been considered as
2750MW per circuit under N-1 contingency. Limit of all other 765kV lines has
been considered as 2500MW under N-1 contingency. The loading limits of all
the 400kV lines are the thermal limits.