| 小波变换在电力设备故障诊断中的应用研究 |
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| 引用本文： | 管霖,吴国沛,黄雯莹,任震,周宏.小波变换在电力设备故障诊断中的应用研究[J].中国电机工程学报,2000,20(10):46-49,54. |
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| 作者姓名： | 管霖 吴国沛 黄雯莹 任震 周宏 |
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| 作者单位： | 1. 华南理工大学电力学院,广东省,广州市,510640
2. 华中电力集团技术中心,湖北省,武汉市,430077 |
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| 基金项目： | 广东省自然科学基金资助项目! (980 6 0 8)，华中电力集团公司资助项目 |
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| 摘 要： | 利用Ｐａｒｓｅｖａｌ恒等式分析了信号谱分析中连续小波变换结果的物理涵义，并由此导出了信号特征谱分析中小波基的选取原则和小波母函数的通用选取方法。针对定子绕组单相接地故障，讨论了小波母函数的选取方法、基于小波变换的故障识别方法及实现过程，并与离散傅氏变换进行了对比分析。通过动模实验结果充分验证了小波变换方法的可行性和优越性。
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| 关 键 词： | 小波变换 电力系统 故障诊断 谱分析 电力设备 |
STUDIES ON THE APPLICATION OF WAVELET TRANSFORM IN FAULT DIAGNOSIS OF ELECTRIC DEVICES |
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| GUAN Lin,WU Guo-pei,HUANG Wen-ying,REN Zhen,ZHOU Hong.STUDIES ON THE APPLICATION OF WAVELET TRANSFORM IN FAULT DIAGNOSIS OF ELECTRIC DEVICES[J].Proceedings of the CSEE,2000,20(10):46-49,54. |
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| Authors: | GUAN Lin WU Guo-pei HUANG Wen-ying REN Zhen ZHOU Hong |
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| Abstract: | The
physical explanation of the continuous wavelet transformation (CWT) is discussed first in
this paper based on the Parseval equation. A general method for the choice of proper
wavelet base according to the engineering requirements is presented. Application of the
CWT in the turbine generator internal fault diagnosis is studied, including the mother
function choice, the fault detection results and their comparisons with the discrete
Fourier transformation (DFT) methods. Laboratory tests prove the feasibility and priority
of the designed WT-based method. |
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| Keywords: | wavelet transformation power system fault diagnosis signal analysis |
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