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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

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