| 利用小波变换的双端行波测距新方法 |
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| 引用本文： | 覃剑,陈祥训,郑健超,吴成琦.利用小波变换的双端行波测距新方法[J].中国电机工程学报,2000,20(8):6-10. |
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| 作者姓名： | 覃剑 陈祥训 郑健超 吴成琦 |
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| 作者单位： | 1. 中国电力科学研究院,北京,100085
2. 中国东北电力集团公司,辽宁省,沈阳市,110006 |
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| 摘 要： | 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。
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| 关 键 词： | 小波变换 行波 故障测距 连续小波变换 输电线路 |
A NEW DOUBLE TERMINAL METHOD OF TRAVELLING WAVE FAULT LOCATION USING WAVELET TRANSFORM |
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| QIN Jian,CHEN Xiang-xun,ZHENG Jian-chao,WU Cheng-qi.A NEW DOUBLE TERMINAL METHOD OF TRAVELLING WAVE FAULT LOCATION USING WAVELET TRANSFORM[J].Proceedings of the CSEE,2000,20(8):6-10. |
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| Authors: | QIN Jian CHEN Xiang-xun ZHENG Jian-chao WU Cheng-qi |
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| Abstract: | This paper presents a new double terminal method of travelling wave fault location, here the arrival time of travelling wave is defined by an optimal characteristic point of travelling wave extracted by a suitable CWT, and the propagation velocity is related to the physical configuration and parameters of the line and the dilation parameter. Based on the method two feasible travelling wave fault location schemes are introduced. A large amount of simulation results and field short circuit test results show that the new method is accurate and reliable, and it can meet the accurate fault location requirement. |
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| Keywords: | wavelet transform travelling wave fault location continuous wavelet transform |
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