electricpy.fault.distmeasz¶

electricpy.fault.distmeasz(VLNmeas, If, Ip, Ipp, CTR=1, VTR=1, k0=None, z1=None, z0=None, linelength=1)[source]¶

Distance Element Measured Impedance Function.

Function to evaluate the Relay-Measured-Impedance as calculated from the measured voltage, current, and line parameters.

Parameters:¶

VLNmeas : complex¶

Measured Line-to-Neutral voltage for the faulted phase in primary volts.

If : complex¶

Faulted phase current measured in primary amps.

Ip : complex¶

Secondary phase current measured in primary amps.

Ipp : complex¶

Terchiary phase current measured in primary amps.

CTR : float, optional¶

Current transformer ratio, default=1

VTR : float, optional¶

Voltage transformer ratio, default=1

k0 : complex, optional¶

Residual Compensation Factor

z1 : complex, optional¶

The positive-sequence impedance characteristic of the line, specified in ohms-per-unit where the total line length (of same unit) is specified in linelength argument.

z0 : complex, optional¶

The zero-sequence impedance characteristic of the line, specified in ohms-per-unit where the total line length (of same unit) is specified in linelength argument.

linelength : float, optional¶

The length (in same base unit as impedance characteristics) of the line. default=1

Returns:¶

Zmeas – The “measured” impedance as calculated by the relay.

Return type:¶

complex