摘要
提出将改进形态Haar小波(IMHW)用于输电线路行波测距中。从信号的时域上提取奇异点,能够较为快速和准确地定位奇异发生的时刻,适合应用于输电线路故障测距。大量ATP仿真结果表明采用基于IMHW变换的行波测距能够准确地提取行波信号的波头位置,具有较高的测距精度。IMHW变换主要是加减和取极值运算,与经典Mallat小波算法相比,该算法具有结构简单,算法量较小,易于工程实现的特点。
Improved morphological Haar wavelet（IMHW） is proposed to locate transmission line fault by traveling wave.It extracts singular points from the time domain,which can position singular moment more quickly and accurately,and is fit for transmission line fault location.A lot of ATP simulation results show that the proposed algorithm of fault location based on IMHW is exact to extract the arrival time of traveling wave.Compared with Mallat algorithm,IMHW transform is mainly composed of addition,subtraction and taking extreme computation with the characteristics of simple structure,a small amount of algorithm,and easy to implement.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2010年第6期30-34,共5页
Power System Protection and Control
关键词
形态小波
HAAR小波
数学形态学
故障测距
小波变换
morphological wavelet
Haar
mathematical morphology
fault location
wavelet transform
