THE MINISTER OF STATE (INDEPENDENT CHARGE) OF THE MINISTRY OF POWER
( SHRI JYOTIRADITYA M. SCINDIA )
(a) : Measures such as frequency based automatic load shedding
schemes, system protection schemes, primary response from generators
through Free Governor / Restricted Governor mode of operation are, at present,
in place to prevent grid outages and power swings. Further, RLDCs and SLDCs
also keep a watch on the overloading of grid elements even under normal
frequency band of operation and advise the concerned utility to check the
overloading which may lead to grid outages/power swings.
(b) to (d) : No specific rules/guidelines regarding overdrawal of power by
States have been issued by CERC after the grid disturbance incident during the
month of July, 2012.
(e) : To prevent the recurrence of the grid disturbances which took
place on 30th and 31st July 2012, the Enquiry Committee, constituted by Ministry
of Power, had recommended several measures for increasing the protection
system of power grids including Third Party Protection Audit (TPA) of the sub-
stations throughout the country. TPA has been completed in all regions of the
country. Other measures that have been initiated include preparation of
comprehensive defense plan covering under-frequency, rate of change of
frequency under voltage, system protection schemes to cover large generation
and transmission line outages, advise to utilities to prepare outage plans for
generating units and transmission lines in consultation with Regional Power
Committees.
