摘要
介绍了国内外农村配电网单相接地的故障定位方法,提出了一种基于小波变换对信息进行处理的反射行波分析法。利用农村配电网架空线路带有分支的特点,对各个分支点的反射波进行信号分析,根据小波变换后的模极值和矩阵特征值来确定故障位置。结果表明反射行波分析法能准确地确定故障位置。
This paper introduces methods for the singlephase-to-earth fault location in the rural distribution networks both at home and abroad,and presents a new fault-location method based on the traveling-wave scheme.Given that the overhead transmission line in the rural distribution network has the branching-out node,signal analysis is done for the reflected wave from each of such nods,and then the fault point is located according the modeled exterma and matrix eigenvalue.The result proves that the method can prec...
出处
《电网与清洁能源》
2010年第4期16-20,共5页
Power System and Clean Energy
基金
国家自然科学基金资助项目(50177007)
关键词
农村电网
故障定位
行波
小波包
rural power networks
fault location
traveling wave
wavelet packets
