The Study on Power Cable Fault Location Based on Wavelet Transform

Abstract

With the aggravation of power demands, applications of power cables are more extensive. Researchers also start studying power cable fault location to find out a fault point rapidly and accurately, reduce losses effectively, and provide sufficient and continuous power supply. In the paper, by introducing relevant principles of Wavelet Transform, the simulation experiment is conducted. Wavelet decomposition and reconstitution are applied to realize signal filtering. A multi-scale edge detection theory is utilized to realize calculation of cable fault location. The experiment finds that Wavelet Transform is used to calculate power cable fault location with high accurate results. The error is smaller than one sampling distance. Such a method has a larger applied value.

Three Pulse Cable Fault Detection Method Based on Wavelet Threshold Denoising

“…Therefore, transient analysis is necessary. Considering the current and voltage wave traveling time (wave in the cable transmission speed is 160~190m/us) set the simulation time as 5 4 10 − × s. For the wave process of simulation of cable, the paper uses the Bederon model in the distributed parameters [11].…”