electricpy.fault.correctedcurrents¶

electricpy.fault.correctedcurrents(Ipri, TAP, correction='Y', CTR=1)[source]¶

Electrical Transformer Current Correction Function.

Function to evaluate the currents as corrected for microprocessor- based relay protection schemes.

Parameters:¶

Ipri : list of complex¶

Three-phase set (IA, IB, IC) of primary currents.

TAP : float¶

Relay’s TAP setting.

correction : string, optional¶

String defining correction factor, may be one of: (Y, D+, D-, Z); Y denotes Y (Y0) connection, D+ denotes Dab (D1) connection, D- denotes Dac (D11) connection, and Z (Z12) denotes zero-sequence removal. default=”Y”

CTR : float¶

Current Transformer Ratio, default=1

Returns:¶

Isec_corr – The corrected currents to perform operate/restraint calculations with.

Return type:¶

list of complex