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Critical Clearing time calculation

asked 2020-09-09 07:31:09 -0500

Vikas07 gravatar image

For computing, critical clearing time for generating station in a grid network. I am applying bolted fault at generator bus in an iterative manner until the angle of the generator fails to reach its pre-fault value i.e. loses synchronism. The generator speed also reflects the same in the simulation. Any other factor to be considered for evaluation ? How does critical clearing angle comes into picture in this process ? It was also observed that even if generation in the nearest generators is varied in load flow. The ciritical clearing time still remains the same , Any observations in this regard ? Thanks in advance

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Your question is not a PSS/E specific question, and you can find answers in any good textbook that covers power system dynamic stability, such as Kundur's "Power System Stability and Control".

jfconroy gravatar imagejfconroy ( 2020-09-09 08:40:19 -0500 )edit

The query is , whether the above methology is correct to find critical clearing time in PSSE. How the critical clearing time is computed in PSSE ?

Vikas07 gravatar imageVikas07 ( 2020-09-09 09:05:49 -0500 )edit

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answered 2020-09-09 09:14:11 -0500

perolofl gravatar image

Just supervise the rotor angle and check if the generator goes out of step, i.e., as you mentioned above.

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Asked: 2020-09-09 07:31:09 -0500

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Last updated: Sep 09