Why I cannot initialize and run the dynamic simulation

asked 2024-10-10 12:45:58 -0500

Ewis
11 ●5 ●5 ●7

updated 2024-10-11 09:52:04 -0500

jconto
2701 ●10 ●30 ●41

I run a load flow for a case , it converges normally. When I try STRT and initializing the dynamic simulation , it does not converge .

I got this msg INITIAL CONDITION LOAD FLOW USED 1 ITERATIONS

Then: Network not converged at TIME = -0.002

INITIAL CONDITIONS SUSPECT:

I DSTATE(I) STATE(I) MODEL STATE BUS# X-- NAME --X BASKV ID 
2 0.92452E-02 0.53758 GENROU K+1 94000 P.CRUZ 400.00 1 
3 0.35834E-01 0.81847 GENROU K+2 94000 P.CRUZ 400.00 1 
4 0.16281 0.66431 GENROU K+3 94000 P.CRUZ 400.00 1 
8 0.92452E-02 0.53758 GENROU K+1 94000 P.CRUZ 400.00 2 
9 0.35834E-01 0.81847 GENROU K+2 94000 P.CRUZ 400.00 2 
10 0.16281 0.66431 GENROU K+3 94000 P.CRUZ 400.00 2 
14 0.90782E-02 0.52339 GENROU K+1 94000 P.CRUZ 400.00 3

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What do you mean with not converge? Please specify the problem. Initial conditions suspect?

perolofl ( 2024-10-11 02:16:05 -0500 )edit

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answered 2024-10-11 10:15:32 -0500

jconto
2701 ●10 ●30 ●41

did the dynamic data set initialized well before? what has changed? are the model somehow validated?

When machine models (GENROU, etc.) appear in the initial condition suspect table, check their models parameter values. Check that all generators in the basecase are within its limits (Pmin < Pgen < Pmax and also Qmin < Qgen < Qmax), including the swing generator. Also check if governor models are in this table, since they affect the Pgen value, and adjust their parameters (mainly Pmax) to resolve the suspect condition. The DSTATE shall be as close to zero as possible, so work first on those machines with the largest DSTATE value (like I=4, I=10)

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answered 2024-10-11 09:41:12 -0500

Ewis
11 ●5 ●5 ●7

I got this msg INITIAL CONDITION LOAD FLOW USED 1 ITERATIONS

Then: Network not converged at TIME = -0.002

INITIAL CONDITIONS SUSPECT: I DSTATE(I) STATE(I) MODEL STATE BUS# X-- NAME --X BASKV ID 2 0.92452E-02 0.53758 GENROU K+1 94000 P.CRUZ 400.00 1 3 0.35834E-01 0.81847 GENROU K+2 94000 P.CRUZ 400.00 1 4 0.16281 0.66431 GENROU K+3 94000 P.CRUZ 400.00 1 8 0.92452E-02 0.53758 GENROU K+1 94000 P.CRUZ 400.00 2 9 0.35834E-01 0.81847 GENROU K+2 94000 P.CRUZ 400.00 2 10 0.16281 0.66431 GENROU K+3 94000 P.CRUZ 400.00 2 14 0.90782E-02 0.52339 GENROU K+1 94000 P.CRUZ 400.00 3

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Why I cannot initialize and run the dynamic simulation

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