POWER

Explained: Why is there concern that the 9 pm lights-out could impact India’s electricity grid?

In his address to the nation on Friday, Prime Minister Narendra Modi asked people across the country to turn off the lights in their homes for 9 minutes on April 5, starting at 9 pm.

In response to this appeal, grid managers across states such as Punjab, Uttar Pradesh, Gujarat and Tamil Nadu, though their respective state load despatch centres (SLDCs), are learnt to have flagged the risks and are preparing for the worst case scenario as a contingency measure, with the assumption being that all lighting load in the country could simultaneously go off for 9 minutes on Sunday evening and then come back on.

India is one of the largest synchronous interconnected grids in the world, with an installed capacity of about 370 gigawatts (3,70,000 mega watts), and a normal baseload power demand of roughly 150 gigawatts.

Power System Operation Corporation Ltd (POSOCO), the national electricity grid operator, projects daily demand of power and regulates supply from power generators based on these projections to maintain frequency (demand-supply balance) round the clock to prevent the grid from tripping.

Frequency reflects the load generation balance in the grid at a particular instant and is one of the most important parameters for assessment of the security of the country’s power system.

Source
Indian Express
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