| 基于小波变换的行波故障选相 |
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| 引用本文： | 胡丹,王建华,姜书鹏,王雅婷,许青松.基于小波变换的行波故障选相[J].电气开关,2013(6):43-45. |
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| 作者姓名： | 胡丹 王建华 姜书鹏 王雅婷 许青松 |
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| 作者单位： | [1]三峡大学电气与新能源学院,湖北宜昌443000 [2]吉林省和龙市农电有限公司,吉林和龙133500 [3]国网吉林省电力有限公司吉林供电公司,吉林吉林132001 |
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| 摘 要： | 输电线路发生短路故障时，产生的故障暂态行波是一种非线性非平稳信号。初始行波信号到达检测点，测量信号将出现突变，小波变换能够检测出该突变并用模极大值进行刻画。MATLAB仿真结果表明，该方法能准确实现故障选相。
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| 关 键 词： | 行波 小波变换 故障选相 |
Travelling-Wave Fault Phase-Section Based on Wavelet Method |
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| HU Dan,WANG Jian-hua,JIANG Shu-peng,WANG Ya-ting,XU Qing-song.Travelling-Wave Fault Phase-Section Based on Wavelet Method[J].Electric Switchgear,2013(6):43-45. |
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| Authors: | HU Dan WANG Jian-hua JIANG Shu-peng WANG Ya-ting XU Qing-song |
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| Affiliation: | 1. College of Electrical and New Energy Source, Sanxia University, Yichang 443000, China; 2. Helong City Rural Power Co. , Ltd. , Helong 133500, China;3. Jilin Power Supply Compeuny, Jilin Power tomp Co. , Ltd. , Jilin 12001, China) |
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| Abstract: | When a short circuit fault of transmission lines happens, it will produce transient state wave, which is a non- linear and non-stationary signal. When initial travelling signal reaches the detection, the measurement signals will produce mutation, which can be detected by wavelet and use its modulus maxima to describe. The results of simulation by MATLAB show that this method can accurately realize fault-selection and fault location. |
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| Keywords: | travelling wave wavelet method fault-selection |
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