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提出了行波到达时间由合适的小波变换提取的行波特征点位置确定 ,行波传播速度由输电线路的结构参数及相应小波变换的分析尺度确定的双端行波测距新方法 ,并介绍了2种可行的利用小波变换的行波测距方案。大量仿真测距结果及现场验证试验的 31组测距结果 ,证实所提小波变换测距法精度高、结果准确 ,且受到影响因素少 ,能满足精确故障定位的要求。
A new method for determining the location of the traveling wave feature points extracted by the appropriate wavelet transform and the traveling wave traveling distance determined by the structural parameters of the transmission line and the analysis scale of the corresponding wavelet transform is proposed and introduced Two kinds of feasible traveling wave based on wavelet transform are proposed. A large number of simulation results of distance measurement and field verification test of 31 sets of ranging results show that the proposed wavelet transform ranging method with high accuracy, accurate results, and less affected by factors that can meet the precise fault location requirements.