Power System Operation Corporation Ltd (POSOCO), a wholly-owned subsidiary of state-run transmission utility Power Grid, oversees operations of electricity grids.

The high-level enquiry committee that looked into the grid disturbances last year had called for dynamic security assessment capability to assess the "system security in real time" as well as vulnerability condition of system. It had also suggested carrying out periodic dynamic security assessment at the control centres.
"As per information from POSOCO, present system does not have dynamic security assessment capability. New systems are being developed/planned for the future," said the Central Electricity Authority (CEA).

The observation is part of the latest update on the status of action taken on implementation of recommendations of Grid Disturbance Enquiry Committee. CEA is the apex planning body for the power sector.

In one of the worst collapses, the Northern grid had tripped on July 30 last year resulting in massive outages. The very next day, Northern, Eastern and North Eastern grids had failed.
Following the failures, the Power Ministry along with other stakeholders has implemented various measures to ensure safety and smooth functioning of electricity grids.
Meanwhile, a real time security desk has been set up at the National Load Despatch Centre (NLDC) -- which has the mandate to keep a tab on electricity loads on different grids across the country.
Presently, there are five regional grids in the country: Northern, Eastern, Western, North Eastern and Southern. Work is also progressing to synchronize the Southern grid with the other four grids.
Overdrawal of electricity by some of the Northern Region utilities and multiple outages of transmission lines were cited as among the reasons for collapse of grids last year.


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