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Dynamic simulation

asked 2023-12-05 08:46:25 -0500

rahmed gravatar image

How to use PSS/E to run a dynamic simulation of a single-phase short-circuit which, after a certain time, becomes a two-phase short-circuit on the same bus?

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answered 2023-12-05 11:47:11 -0500

perolofl gravatar image

Unbalanced faults can be simulated if sequence data (zero and negative sequence) are present in the saved case.

  • Initialise simulation

  • Run to time t1

  • Apply unbalanced bus fault and select "Line-to-ground" fault

  • Run to time t2

  • Clear fault

  • Apply unbalanced bus fault and select "Line-to-line or
    Line-to-line-to-ground" fault

  • Clear fault

  • Run to t4

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Thank you for your answer. But, how can we fix the impedances R L-L and X L-L or R L-G and X L-G of the faults?

rahmed gravatar imagerahmed ( 2023-12-08 06:30:16 -0500 )edit

For solid fault, use R L-L and X L-L = 0. For LLG fault set R L-G and X L-G = 0. For LL fault set X L-G = 9999.

perolofl gravatar imageperolofl ( 2023-12-11 03:51:07 -0500 )edit

Thank you for your answer

rahmed gravatar imagerahmed ( 2023-12-14 05:18:17 -0500 )edit

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Asked: 2023-12-05 08:46:25 -0500

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Last updated: Dec 05 '23