Abstract: At the moment of UHV transmission line fault, the fault electromagnetic wave will propagate from the fault point to the lines on both sides. By capturing the initial arrival time of the traveling wave heads on both sides of the line, the fault location can be obtained. This paper describes the principle of traveling wave fault location method based on wavelet analysis, and builds a two terminal transmission line model based on EMTP simulation software, it uses wavelet analysis tool to identify fault traveling wave, and carries out simulation analysis on different fault distance and transition resistance value. The results show that the traveling wave fault location method based on wavelet analysis has high fault location accuracy and good stability, and is basically not affected by factors such as fault type and fault distance change, and is extremely robust.

    Key words: traveling wave; wavelet analysis; EMTP simulation software; robustness