PSSE trip generator simulation

sugui_
15 ●10 ●11 ●16

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.

answered May 28 '19

perolofl

3442 ●1 ●9 ●20

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

sugui_ (May 29 '19)

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

perolofl (May 29 '19)

Does the voltage collapse after generator trip?

perolofl (May 30 '19)

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

sugui_ (Jun 3 '19)

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.

sugui_ (Jun 3 '19)

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PSSE trip generator simulation

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