Ground Fault Location on a Transmission Line Using High-Frequency Transient Voltages

This letter presents a fault-location method using high-frequency transient voltages generated by ground faults on a transmission line. The method is based on the measurement from one end of the line. The fault location is determined solely from the arrival time of initial waves of modal voltages at the measuring bus. The method does not need to use the reflected waves. The method is tested using the Electromagnetic Transient Program and the statistical results are presented.