| 基于小波变换模极大值的SPD故障诊断技术 |
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| 引用本文： | 李军浩,汪晓明,王晶,牟磊,郭丙涛. 基于小波变换模极大值的SPD故障诊断技术[J]. 高电压技术, 2006, 32(3): 40-41,48 |
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| 作者姓名： | 李军浩 汪晓明 王晶 牟磊 郭丙涛 |
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| 作者单位： | 1. 西安交通大学电气工程学院,西安,710049
2. 中共中央直属机关事务管理局戴河接待办公室,秦皇岛,066100 |
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| 摘 要： | 使用复合波诊断以ZnO压敏电阻为主要元件的SPD的故障中电压信号的突变点往往携带SPD运行状态的重要信息。基于小波分析的信号奇异性检测理论可通过检测信号小波变换模极大值点来确定信号奇异点,通过分析信号模的极大值及其出现位置诊断SPD的故障。籍此理论分析了不同故障类型的SPD复合波冲击下的电压信号,证明使用小波分析模极大值诊断SPD故障的方法行之有效。
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| 关 键 词： | SPD 故障诊断 突变信号 小波变换模极大值 |
| 文章编号： | 1003-6520（2006）03-0040-02 |
| 收稿时间： | 2005-04-12 |
| 修稿时间： | 2005-04-12 |
Fault Diagnosis for SPD Based on Wavelet Transform Modulus Maximum |
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| LI Junhao,WANG Xiaoming,WANG Jing,MOU Lei,GUO Bingtao. Fault Diagnosis for SPD Based on Wavelet Transform Modulus Maximum[J]. High Voltage Engineering, 2006, 32(3): 40-41,48 |
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| Authors: | LI Junhao WANG Xiaoming WANG Jing MOU Lei GUO Bingtao |
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| Affiliation: | 1.School of Electrical Engineering,Xi’an Jiaotong University,Xi’an 710049, China;2.Beidaihe Reception Office of CCP Administration Department,Qinhuangdao 066100,China) |
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| Abstract: | Singularities often carry major information in voltage signals in the combination wave detection of SPD.Theory of singularities detection based on wavelet analysis can define the singularities according to the modulus maximum of wavelet analysis of voltage signals.Through analyzing the location and degree of modulus maximum,that there is any fault or not in SPD can be shown.This paper analyzes the voltage signals of different types of faults and discusses the method that diagnoses the SPD using wavelet transform modulus maximum.The test results show that this method is fairly effective in SPD fault recognition. |
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| Keywords: | SPD fault diagnosis transient signal wavelet transform modulus maximum |
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