Why can't the dynamic simulation step time be smaller than 0.03s?

asked 2021-06-01 06:45:38 -0500

breeze2021
1 ●9 ●10 ●10

I found that the dynamic simulation step time can not be smaller than 0.03s. Is that true? Please help me with that problem. Thank you very much!

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answered 2021-06-03 01:21:18 -0500

lmcqueen
66 ●32 ●35 ●37

Large time constants may result to the instability of numerical simulation. You must select a time constant that can capture stability phenomena in the range of 0.1 - 10 seconds. Please consult PSS/E PAGV2.pdf manual for more information.

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answered 2021-06-01 08:01:55 -0500

perolofl

3312 ●1 ●8 ●18

Normal time step is 0.01 s for 50 Hz systems and 0.008333 s for 60 Hz systems. You may have a problem with too short time constants in some dynamic models.