electricpy.fault.phs3mvasc

electricpy.fault.phs3mvasc(Vth, Zseq, Rf=0, Sbase=1)[source]

Three-Phase MVA Short-Circuit Calculator.

Calculator to evaluate the Short-Circuit MVA of a three-phase fault given the system parameters of Vth, Zseq, and an optional Rf. Uses the formula as follows:

\[MVA_{sc} = \frac{\left|V_{th}^2\right|}{|Z_1|} * Sbase\]
Parameters:

  • Vth (complex) – The Thevenin-Equivalent-Voltage

  • Zseq (list of complex) – Tupple of sequence reactances as (Z0, Z1, Z2)

  • Rf (complex, optional) – The fault resistance, default=0

  • Sbase (real, optional) – The per-unit base for power. default=1

Returns:

MVA – Three-Phase Short-Circuit MVA.

Return type:

real