Research on Fault Area Location Method of UHV Transmission Line Based on Transient Recording Technology

Abstract

In order to solve the problem of low accuracy of current uhv transmission line fault location method, a fault area location method based on transient recording technology is proposed. According to the principle of transient wave recording, fault collector of transmission line is designed to collect fault data. The fault signal collected by wavelet scale decomposition is used to determine the time when the fault traveling wave head reaches the detection point. Calculate the traveling wave velocity of the fault, and calculate the distance between the fault point and the detection point based on the arrival time of the wave head, so as to locate the fault area of uhv transmission line. Through the comparison with the current line fault location method, it is proved that the proposed fault area location method for uhv transmission line based on transient recording technology can effectively improve the fault location accuracy of the line by nearly twice, and is worth popularizing.