输电线路故障定位中小波变换的应用

高压输电线路故障定位对电力系统安全稳定运行有着重要意义.故障稳态、暂态信号的处理、分析对高压输电线路故障定位的准确性、可靠性有着重要影响.小波变换为信号分析处理提供了强有力的数学工具.分析了国内外小波变换在输电线路故障定位中的应用研究内容及现状,指出了一些存在的问题探讨了进一步研究的方向.;High-voltage transmission line is very important to the entire power system, but it is vulnerable to faults.It is important to repair transmission line and to ensure the safety, reliability in locating the faults quickly and accurately.This paper describes the research contents and the status quo of the use of wavelet transform for analyzing power system both in China and abroad.Wavelet transform provides a useful maths taol for analyzing and processing signals.Traveling wave theory is utilized in capturing the travel time of the transients along the monitored lines between the fault point and the relay