I have to do transient stability analysis and my .dyr file is exceeding the STATE variables limit as I have the limited version so can I do my simulation by removing exciter governor or stabilizer models or they all are necessary.
For transient stability simulations (i.e. short circuits) you could reduce the dynamic model in the following order:
1 Remove governor models
2 Remove stabiliser models
3 Remove exciter models
Remove until the number of STATEs are within the limit. Start removing for small machines, e.g. remove exciter for small machines until the number of STATEs are ok. But, as @jconto wrote, keep exciters for generators close to the disturbance (short circuit).
Exciters provide an insight on how the generator respond to voltage disturbances, governors do the same for frequency events. To remove them is to lose those dynamic behavior responses.
For a limited size PSSe version, remove models from generators (or GNET them) 'far away' from the study area where the fault/test is applied. Consider switching to a small-size network to perform your tests.
Asked: 2024-10-20 15:27:05 -0500
Seen: 168 times
Last updated: Oct 25
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Based on your purpose actually, if you don't need to observe the performance of SG, then in my opinion, you could remove these three type of model.