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What is X Source in Generator Model ?

asked 2021-07-27 14:31:20 -0500

Awab Elwasila gravatar image

I have some doubts about the X Source in Generator Model, is it Xd' or some thing else ?

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answered 2021-07-28 01:35:22 -0500

ffl gravatar image

The Xsource in the generator power flow model is the unsaturated subtransient reactance in p.u. Please refer to PAGV1.pdf for more information about the generator model.

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Thanks for replying. Why it is in steady state generator tab ?

Awab Elwasila gravatar imageAwab Elwasila ( 2021-07-28 03:19:06 -0500 )edit

In PSS/E, the power flow model is linked with the dynamic model. The PSS/E checks for the value of Xsource in the power flow to see if it is the same as the X" in the generator dynamic model.

ffl gravatar imageffl ( 2021-07-28 05:23:49 -0500 )edit

It's also used in short circuit calculations.

likethevegetable gravatar imagelikethevegetable ( 2021-07-29 10:23:02 -0500 )edit

The unsaturated subtransient reactance cannot be used for short-circuit calculations.

ffl gravatar imageffl ( 2021-07-29 20:32:32 -0500 )edit

How else would the generator impedance be modelled for short circuit contribution?

likethevegetable gravatar imagelikethevegetable ( 2021-07-29 20:51:52 -0500 )edit

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Asked: 2021-07-27 14:31:20 -0500

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Last updated: Jul 28 '21