| 基于Hilbert—Huang变换的变压器局部放电信号特征提取 |
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| 引用本文： | 宋峰,陈军. 基于Hilbert—Huang变换的变压器局部放电信号特征提取[J]. 西北电力技术, 2012, 0(5): 48-50,84 |
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| 作者姓名： | 宋峰 陈军 |
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| 作者单位： | [1]西安供电局,陕西西安710032 [2]陕西华电蒲城发电有限责任公司,陕西蒲城715501 |
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| 摘 要： | 针对现场检测的变压器局部放电信号中含有大量的噪声，提出了1种基于Hilbert-Huang变换法的局放信号的恢复方法，并进行了模拟降噪试验；通过对加噪信号进行EMD分解，再选取合适的IMF分量进行叠加，可以巧妙地消除外界噪声，并且保留了局部放电信号本身的大部分特征，失真较小，试验证明该方法是高效可行的。
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| 关 键 词： | Hilbert—Huang 经验模态分解 局部放电 白噪声 固有模态分量 |
Partial Discharge Detection Methods and Inquiry Partial Discharge Signal Feature Extraction based on Hilbert-Huang Transform |
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| SONG Feng,CHEN Jun. Partial Discharge Detection Methods and Inquiry Partial Discharge Signal Feature Extraction based on Hilbert-Huang Transform[J]. Northwest China Electric Power, 2012, 0(5): 48-50,84 |
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| Authors: | SONG Feng CHEN Jun |
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| Affiliation: | 1. Xi＇ an Power Supply Bureau, Xi＇ an 710032, China; 2. Shaanxi Huadian Pueheng Power Generation Corp. Ltd., Pueheng 715501, China) |
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| Abstract: | For on-site partial discharge detection signal contains a lot of noise, a PD signal recovery method is proposed based on Hilbert-Huang transform, and diagnosing experiment is simulated. Through the EMD decomposition of signal with noise, and selecting the appropriate component of the superposition of IMF, outside noise can be eliminated skillfully and most characteristics of partial discharge signal with little distortion can be retained. Experiments show that this method is efficient and feasible. |
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| Keywords: | Hilbert-Huang EMD partial discharge white noise IMF |
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