| 大型电机PD信号的数字滤波研究 |
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| 引用本文： | 谢自美,黄利,陈建聪.大型电机PD信号的数字滤波研究[J].华中科技大学学报(自然科学版),1996(2). |
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| 作者姓名： | 谢自美 黄利 陈建聪 |
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| 作者单位： | 华中理工大学电子与信息工程系 |
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| 基金项目： | 高等学校博士学科点专项科研基金 |
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| 摘 要： | 以大型电机ＰＤ信号的数字滤波为背景，介绍了一种基于窗函数法的ＦＩＲ数字滤波器设计方法．对大型电机离线和在线检测的ＰＤ信号的实验研究表明，应用该方法设计的ＰＤ信号数字带通滤波器，其通频带越宽，阶数越高，滤波效果越好，适用于在工频噪声干扰环境下提取较弱的ＰＤ信号．
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| 关 键 词： | 大型电机，局部放电，数字滤波器 |
On the Digital Filtering of PD Signals in Large Electrical Machines |
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| Xie Zimei,Huang Li, Chen Jiancong.On the Digital Filtering of PD Signals in Large Electrical Machines[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1996(2). |
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| Authors: | Xie Zimei Huang Li Chen Jiancong |
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| Abstract: | With the filtering of PD signals in large electrical machines as an example, a method for designing the band-pass FIR digital filter based on the window function is described. The FIR digital filtering of PD signals in large electrical machines has been successfully realized. Through off--line andon-line detection, it is proved that such a kind of FIR digital filter is competent in extracting the weakPD signals from an environment with strong noise and interference of 50 Hi and, the wider and thehigher the pass band and order are, the better the results will be. Experimental results are in good agreement with those by theoretical analysis. |
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| Keywords: | large electrical machines partial discharge (PD) digital filter |
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