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How Mbase(MVA) is calculated in .raw file

Hi all,

I am adding new machine and I don't know how to choose Mbase (MVA) in the .raw file (under the tab "Machine").

I was given this .raw file that I am working with and the existing Mbase (MVA) for other machines there are different, some are 120MVA, 25MVA, 10MVA etc.

So my question is how this Mbase (MVA) value is calculated/obtained?

The system base in 100MVA

Best regards, A beginner in PSSE

dennis_1234's avatar
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dennis_1234
asked 2020-05-27 07:41:34 -0500
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Mbase is the rated MVA power for the machine. It is one of the most basic data for a generator, so the information should be available for existing generators.

It is only used for short circuit calculations and dynamic simulations. You can ignore Mbase if you are just doing load flow calculations.

perolofl's avatar
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perolofl
answered 2020-05-27 09:33:32 -0500
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Thanks alot! I got a little confused by the word "base" before but now I understand it after reading your answer.

dennis_1234's avatar dennis_1234 (2020-05-27 14:52:34 -0500) edit
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