SCMVA values don't match between PSSE GUI and Python API function

asked 2020-02-29 22:14:44 -0500

annuko gravatar image

updated 2020-03-02 08:28:59 -0500

I calculated SCMVA capacity at a bus in PSSE using a python "ascc_currents" function with the bus voltage option 1 (all buses at specified value):

Here is how the function was used:

rlst = pssarrays.ascccurrents(sid=sidin, all=all, flt3ph=1, voltop=1,genxop=0)

The calculated SCMVA using above function does not match with the value from GUI of PSSE with "all buses at specified voltage" is selected.

Surprisingly, the value from python function (using option 1) matches with the value from GUI when the voltage option is set to faulted bus at specified voltage in GUI.

Can anyone tell me what could be the reason for this difference?

Thanks

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