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PSSE trip generator simulation

asked 2019-05-27 21:16:50 -0500

Kevin Chuang gravatar image

I am doing a big system simulation, and I am interest in the system frequency response while a generator is tripped. My problem is that once I diconnect the machine, the system is not converged. This is my system's gen/load distribution, and the total disconncet MW is 1271MW at area North.

Area  North  Middle  South

Load 15099.7 11600.7 12566.5 MW

Gen 10812.8 13498.9 14583.9 MW

I think it may be because the power generation in the north is too small, or the governor response is not enough to support the generation loss. Can anyone gives me a possible answer that I can solve this problem? Thanks.

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answered 2019-05-28 14:48:01 -0500

perolofl gravatar image

How come that the total load is 371.3 MW larger than the total generation?

Try to trip a smaller generator in North.

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It is because that we use some fixed shunt. My goal is to simulate the N-1 situation, so the amount of loss cannot be changed. I want to figure out can it work if I on/off different generator, but try to keep the ratio of power generation in each Area

Kevin Chuang gravatar imageKevin Chuang ( 2019-05-28 22:14:13 -0500 )edit

What do you mean? Do you have fixed shunts with large amount of negative G?

perolofl gravatar imageperolofl ( 2019-05-29 00:54:45 -0500 )edit

Does the voltage collapse after generator trip?

perolofl gravatar imageperolofl ( 2019-05-30 00:55:59 -0500 )edit

Yes, there's about 30 fixed shunts with negative G. Most of them are under 100MW output.

Kevin Chuang gravatar imageKevin Chuang ( 2019-06-03 02:18:54 -0500 )edit

I don't know if that situation is voltage collapse or not. As I trip generator, it says that network not converged and then some value(Power, voltage, frequency, etc.) become NaN. I can only watch Iterm and it becomes 0 in sinulation.

Kevin Chuang gravatar imageKevin Chuang ( 2019-06-03 03:01:17 -0500 )edit

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Asked: 2019-05-27 21:16:50 -0500

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Last updated: May 28