基于小波理论的超高压输电线路故障定位与选相方法

APPROACH OF FAULT LOCATION AND FAULT PHASE SELECTION IN UHV POWER TRANSMISSION LINE BASED ON THE WAVELET THEORY

基于小波理论对超高压输电线路行波保护的故障判据、定位和选相进行了研究 ,提出了故障诊断的小波检测算法 ,并进行了计算机仿真。所提出的方法对建立超高压输电线路高速继电保护具有重要意义。

This paper studies fault criterion, fault location and fault phase selection of UHV transmission line according to the wavelet theory. The detection algorithm based on wavelets is provided and the digital simulation result is given. The approach given in the paper has practical value in the relay protection of UHV transmission line.