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2020-05-27 13:29:00 -0500 asked a question iec transformer impedance correction factor in thevenin impedance calculation

Please, can someone help me understand what the impedance correction iec factor the psse uses to calculate the zero sequence thevenin impedance.

using a theoretical system of only one generator (with impedance equal to zero) and a delta-wye grounded transformer, a short circuit In high side (wye side) in the ascc method the zero sequence thevenin impedance is equal to zero sequence impedance of transformer on the wye side

but in the iec method, thevenin impedance is different.

I tried using the formula kt = 0.95.cmax / 1 + 0.6xt but the result does not match.

thank you

2020-05-22 02:28:52 -0500 commented answer In line fault

Thank you very much

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2020-05-12 16:07:15 -0500 answered a question In line fault

Thank you

People like me who like show results In diagram Im thinking of create a Python script to insert a dummy bus automatically Is possible?

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2020-05-09 15:44:48 -0500 commented question Suggestions on PSS/E topics

congratulations for the initiative very good we are waiting for new tutorials and we will spread it to more people

2020-05-09 13:41:04 -0500 asked a question In line fault

Hello

Does ASCC not do in line fault? only does scmu do in line fault? how to show the scmu results in the diagram? how can I represent an in line fault in the diagram?