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Short circuit equivalent generator

asked May 28 '0

Vikas07 gravatar image

A couple of questions on modelling short and equivalent generator for short circuit analysis. 1) How to derive the max short circuit MVA at a bus. 2) The Zth is available , but how to get X0/X1 ratio for representing zero and positive seq reactance in SC paramter of generator. Thanks in Advance

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answered Jun 1 '0

GaryB gravatar image

You should know at a minimum the system contribution to three-phase faults (magnitude and angle) and line-to-ground faults. With these, you can use what's in a power system analysis book to derive what you need. You also should consider transient and sub-transient responses and some way to optimize other model parameters to reflect that of the system you're modelling.

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Asked: May 28 '0

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Last updated: Jun 01 '20