electricpy.fault.highzvpickup¶

electricpy.fault.highzvpickup(I, RL, Rct, CTR=1, threephase=False, Ks=1.5, Vstd=400, Kd=0.5)[source]¶

High Impedance Pickup Setting Function.

Evaluates the voltage pickup setting for a high impedance bus protection system.

Parameters:¶

I : float¶

Fault current on primary side (in amps)

RL : float¶

One-way line resistance in ohms

Rct : float¶

Current Transformer Resistance in ohms

CTR : float, optional¶

Current Transformer Ratio, default=1

threephase : bool, optional¶

Control argument to set the function to evaluate the result for a three-phase fault or unbalanced fault. default=False

Ks : float, optional¶

Security Factor for secure voltage pickup setting, default=1.5

Vstd : float, optional¶

C-Class Voltage rating (i.e. C-400), default=400

Kd : float, optional¶

The dependability factor for dependable voltage pickup setting, default=0.5

Returns:¶

• Vsens (float) – The calculated sensetive voltage-pickup.

• Vdep (float) – The calculated dependable voltage-pickup.