ANNUAL REPORT 2011-12 - State Load Despatch Centre (SLDC)

Annual Report 2011-12
17. FOCUS AREAS
A. Renewable Energy Integration
High generation from RE (wind) sources:
1. Over loading of 220 / 66 KV Shivlakha ICTs with power flow from 66 KV to 220 KV
side.
2. The loading of 220 KV D/C Tappar – Shivlakha line is almost near to the thermal
loading capacity of the line.
Less generation from RE (wind) sources:
The loading on 400/220 KV ICTs at Jetpur, Hadala and Amreli is to the extent of 65 to
70 % and it becomes difficult to avail outages on any of these ICTs.
B. Continuous over loading of 220 KV Hadala – Nyara D/C line
These lines are carrying power flow of around 220-230 MW on each circuit and
despite keeping 220 KV S/C Tappar – Hadala and 220 KV S/C Rajkot – Jetpur lines OFF,
they carry around 190 MW on each circuit.
C. Continuous over loading of 220 KV Kawas – Ichhapore S/C line
The loading on this line varies in the range of 200 to 300 MW due to continuous
variable load of M/s. Essar Steel Ltd (ESTL). Despite keeping one or both circuits of 220
KV D/C Haldarva – Kawas line OFF (as the flow is from Haldarva to Kawas), the loading
on this line is quite excessive due to sale of power to M/s. ESTL on STOA, less
requisition of DISCOM from EPOL (To adhere to merit order despatch).
The issue has been discussed twice at Kawas NTPC in presence of WRPC, NTPC, M/s.
Essar Power Ltd. and GETCO representatives and also, in OCC Meetings. Various
options have been discussed and it is finalized to resolve the issue at the earliest.
State Load Despatch Centre
Gujarat Energy Transmission Corporation Limited
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