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How to alter the voltage set points of conventional generators to ensure they are not at their reactive power limit?

asked 2021-02-22 09:40:06 -0500

Ulster_4 gravatar image

I've solved a case in PSSE however, a number of my conventional generators are at their Qmax.

I am aware that changing the Voltage Set Point can reduce my Qmax, however, after I alter this on one unit it knocks it off on a different unit.

How do you decide on the correct Voltage Set Point of a generator? Is there a method for doing this?

Additionally, sometimes when I change the Voltage Set Point and re-solve the case the system blows up.

Any advice would be appreciated.

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answered 2021-02-26 04:16:32 -0500

Cao Huy gravatar image

updated 2021-02-26 04:27:18 -0500

Firstly, changing Voltage set point doesn't change generator's Qmax, but Qgen. Secondly, there are many ways to control reactive power. You could try some of them:

  1. Optimal power flow
  2. Implementing of compensators (fixed shunt, SVC...)
  3. Changing parametters manually. In your case, I suggest to raise Vset of not only one generator, but all generators in the surrounding area.
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Asked: 2021-02-22 09:40:06 -0500

Seen: 89 times

Last updated: Feb 26