Power utilities prevent possible blackout in State
The State was unaffected by North grid collapse due to better efforts.
All out and coordinated efforts by AP power utilities, which have adopted four major factors such as effective fault analysis, 24×7 monitoring of grid, Automatic disturbance control mechanism and Island mode grid mechanism have fully insulated in AP which is the main part of the Southern grid (AP, Tamil Nadu, Karnataka, Kerala and Puducherry), against the Northern grid collapse that occurred on Monday and fully protected the State from a possible blackout.
What went wrong
The normal frequency at which electricity is transmitted through the Northern grid ranges from 49.5 to 50.2 Hz (cycles/second), at the time of the collapse the grid frequency was 50.46 Hz, a few notches above normal.
According to energy experts, overloading could be one of the probable reasons for the grid collapse. Power supply across nine states of north India including Delhi, Haryana, Punjab and Rajasthan has been hit. The northern grid, which caters to about 28 per cent of the country’s population, covers nine states — Punjab, Haryana, Rajasthan, Delhi, Uttar Pradesh, Uttarakhand, Himachal Pradesh, J&K and Chandigarh.
Transco stepped in
In view of the collapse/disturbances, AP Transco CMD Hiralal Samaria, who held an emergency meeting along with P Sri Rama Rao, director (Grid)/ AP Transco and senior engineers reviewed the latest power supply position and precautions to be taken for maintaining better grid stability in the State.
The grid officials informed the meeting that there has been no power blackout in the Southern grid since the September 11, 2001 and it was mainly possible due to enhanced grid discipline along with advanced planning, adequate investments in strengthening the Transmission and Distribution Network and upgrading of the sub stations.
The CMD emphasised the need to maintain the grid frequency between 49.5 Hz to 50.2 Hz, as per Indian Electricity Grid Code.
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