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Southern Grid Integration with National Grid Advanced to Jan 2014


The Union Power Ministry has decided to integrate the southern grid with the national grid in January 2014, Minister for Power and Corporate Affairs M. Veerappa Moily said.

He said it was scheduled earlier for December 2014, and the Ministry had now decided to advance it.

There are indeed significant advantages of integrating the southern grid with the national grid. The grid is more robust and less vulnerable to spikes in power supply or excess demand. I was in fact told by a senior executive in TNEB while I was doing a small assignment for them that the grid frequency in the southern grid increases by 1 Hz if there is an increase of 1000 MW, while for the National Grid, the supply capacity has to increase by an order of magnitude higher (if I remember correctly, he mentioned 10,000 MW), for it to increase by 1 Hz. Naturally, integrating the grids also means that while higher supplies can be routed to the national grid while still fetching reasonable tariffs, higher demands in the state can be met too.

However, one concern that arises owing to the recent failure of the northern and north eastern grids is whether such an integration could cause blackouts to the southern grid too in the future if states such as UP, whose overdrawals allegedly was one of the reasons for the grid collapse, continue doing so in the future.

 


Categories: Electricity Generation and Transmission

Author - Narasimhan Santhanam


Thank you for reading this post – hope it was helpful. You can connect with me at narsi@eai.in. My detailed profile here and my LinkedIn profile here

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2 Comments

  1. C.S.BALAJI August 21, 2012

    When GOI is serios about grid discipline and expects the same from even all the industrial consumers such an attitude(over withdrawal) by state governments needs to be discouraged by all means.

    (reply)
  2. Gadepalli Subrahmanyam June 17, 2013

    Whether to go Mega or be with Mini, have always been matters for debate. Each has its own plus points. In our scenario, it is necessary to integrate, for the majority to get
    the benefits. If there is lack of discipline, say by over drawal
    it has to be addressed separately, and safe guards incorporated.

    Yes. We need to have a national grid

    (reply)

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