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Hello, I'm working on a dyr simulation (IEEE39 sav, IEEE39 dyr file). First of all i did power flow and opened dyr file, convert load, gen / ORDR, FACT ,TYSL what we need to do before simulating dyr. After initialize, I tried to change load data P (Pbefore+3MW) and simulated to 1 second. But at 0.4 seconds? at progress window it shows nan data, which i think it is converged. Could you tell me the reason why data converged? I can't figure it out myself thanks.