| 基于模极大值小波域的局部放电信号重构算法 |
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| 引用本文： | 齐泽锋,李卫国,谈顺涛,周力行.基于模极大值小波域的局部放电信号重构算法[J].中国电机工程学报,2002,22(11):28-30. |
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| 作者姓名： | 齐泽锋 李卫国 谈顺涛 周力行 |
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| 作者单位： | 1. 武汉大学电气工程学院,湖北,武汉,430072
2. 长沙电力学院,湖南,长沙,410077 |
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| 基金项目： | 教育部高等学校骨干教师计划项目(20006529)。 |
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| 摘 要： | 局部放电信号是奇异信号，利用模极大值原理，可以对局部放电信号去噪，然而，对于单个的局部放电脉冲信号，如何由保留下来的少数模极大值点重构局部放电信号是一个重要课题。为此，该文提出一种基于模极大值小波域的局部放电信号重构算法，该算法先根据模极大值小波域的定义求出局部放电信号的模极大值小波域，从而得到局部放电信号的小波系数，然后逆变换得到局部放电信号，实例分析表明，该算法程序简单，易实现，速度快，能满足局部放电在线监测的需要。
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| 关 键 词： | 模极大值 小波域 局部放电 信号重构算法 |
| 文章编号： | 0258-8013(2002)11-0028-03 |
| 修稿时间： | 2002年5月9日 |
ALGORITHM OF PARTIAL DISCHARGE SIGNAL RECONSTRUCTION BASED ON MODULUS MAXIMUM WAVELET DOMAIN |
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| QI Ze-feng ,LI Wei-guo ,TAN Shun-tao ,ZHOU Li-xing.ALGORITHM OF PARTIAL DISCHARGE SIGNAL RECONSTRUCTION BASED ON MODULUS MAXIMUM WAVELET DOMAIN[J].Proceedings of the CSEE,2002,22(11):28-30. |
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| Authors: | QI Ze-feng LI Wei-guo TAN Shun-tao ZHOU Li-xing |
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| Affiliation: | QI Ze-feng 1,LI Wei-guo 2,TAN Shun-tao 1,ZHOU Li-xing 2, |
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| Abstract: | Partial Discharge(PD) is singulearity signal. Noise is removed from PD signal by modulus maximum theory.However, how to reconstruct PD signal from few modulus maximum dots is an important problem. Therefore, an algorithm of PD signal reconstruction based on modulus maximum wavelet domain is presented in this paper. The modulus maximum wavelet domain is sought out based on its definition, which is wavelet transform of PD signal. Then PD signal is reconstructed by inverse wavelet transform. The examples show that it is simple, straightforward and fast, which can satisfy the need of PD monitoring on-line. |
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| Keywords: | partial discharge wavelet transform signal reconstruction modulus maximum |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
