A systematic approach for evaluating the accuracy of overhead line fault location using the traveling wave method

Abstract

In the power system, the high-voltage transmission lines are responsible for transmitting large amounts of energy from one location to another. However, this feature is not always possible because of different defects that may occur on these lines. Therefore, power suppliers must provide exact defective locations where maintenance lines can accelerate, system reliability improved, and unnecessary operating expenses eliminated. In this paper, the traveling wave technique based on wavelet transform proposes to find the exact location assist with voltages and currents signal at the single and multi-end of the transmission line. The techniques simulated using PSCAD / EMTDC software based on a single-phase to ground fault and tested on the sample system. A compendium of the results has shown that the multi-end technique is more accurate than the single-end technique.