Determining distance of single-pole earth connection on stub line involves measuring phase voltages, conductor currents, computing symmetrical components for different null impedances

摘要

The method involves measuring the phase voltages and the 3 conductor currents at a measurement point, computing the symmetrical components of the 3 phase voltages and currents for a first time point, changing the null impedance, re-measuring the voltages and currents at the measurement point, computing the symmetrical components for a second time point and determining the fault distance and transfer resistance by solving given equations.