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ACCC_solution not giving same line flows as load flow

asked 2024-03-24 21:57:03 -0500

Ned P gravatar image

Hi, I have had this problem on two projects now. When getting line flows using result = pssarrays.accc_solution() and then result.mvaflows This gives a different value then if I go into psse and manually turn a line off then check the line flows.

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answered 2024-03-25 17:35:34 -0500

jconto gravatar image

Manual runs of PSSe use an AC load flow solution method, taking into account the reactive power effect on the MVA flow reported, while activity ACCC uses linear factors (like PTDF or OTDF) calculated by activity DFAX, to evaluate the effect of a contingency on the MVA flow monitored (kind of DC load flow). Both values will differ the most when the contingency creates large delta in P & Q flows.

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Thanks for the explanation

Ned P gravatar imageNed P ( 2024-03-25 21:29:08 -0500 )edit

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Asked: 2024-03-24 21:57:03 -0500

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Last updated: Mar 25