electricpy.fault.synmach_Iasym

electricpy.fault.synmach_Iasym(t, Eq, Xdpp, Xqpp, Ta)[source]

Synch. Machine Asymmetrical Fault Current Calc.

Determines the asymmetrical fault current of a synchronous machine given the machine parameters, the internal voltage, and the time for which to calculate.

Iasym=2|Eq|12(1X"d+1X"q)etTa
Parameters:
t : float

Time at which to calculate the fault current

Eq : float

The internal machine voltage in per-unit-volts

Xdpp : float

The X”d (d-axis subtransient) reactance in per-unit-ohms

Xqpp : float

The X”q (q-axis subtransient) reactance in per-unit-ohms

Ta : float

Armature short-circuit (DC) time constant in seconds

Returns:

Iasym – Peak asymmetrical fault current in per-unit-amps

Return type:

float