electricpy.rxrecompose

electricpy.rxrecompose(x_pu, XoR, S3phs=None, VLL=None, VLN=None)[source]

Resistance/Reactance from Per-Unit System Evaluator.

Function to reverse per-unit conversion and return the ohmic value of an impedance given its per-unit parameters of X.

Parameters:

  • x_pu (float) – The per-unit, complex value corresponding to the impedance

  • XoR (float) – The X/R ratio (reactance over impedance).

  • S3phs (float, optional) – The total three-phase power rating of the system. If left as None, the per-unit values will be set to 1, resulting in an unscaled impedance

  • VLL (float, optional) – The Line-to-Line Voltage; default=None

  • VLN (float, optional) – The Line-to-Neutral Voltage; default=None

Returns:

z – The ohmic impedance evaluated from the per-unit base.

Return type:

complex