| 基于泄漏电流脉冲主成分分析的外绝缘污秽状态评估方法 |
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| 引用本文： | 毛颖科,关志成,王黎明,马仪,文华,李锐海.基于泄漏电流脉冲主成分分析的外绝缘污秽状态评估方法[J].电工技术学报,2009,24(8). |
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| 作者姓名： | 毛颖科 关志成 王黎明 马仪 文华 李锐海 |
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| 作者单位： | 清华大学深圳研究生院;清华大学电机系;云南电力试验研究院（集团）有限公司; |
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| 基金项目： | 国家自然科学基金资助项目(50377020) |
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| 摘 要： | 为了防止污闪事故的发生,需要对外绝缘污秽状态进行评估。本文提出一种基于泄漏电流脉冲主成分的外绝缘污秽状态评估方法。首先对一种常用悬式绝缘子进行人工污秽试验,利用泄漏电流测量系统记录不同等值附盐密度(ESDD)和不同相对湿度(RH)下的电流波形,根据脉冲阈值的不同,将泄漏电流脉冲分成80档。利用主成分分析,从中提取一组泄漏电流脉冲主成分向量,用于概括原80档脉冲包含的信息。聚类分析和综合主成分分析的结果表明,绝缘子泄漏电流脉冲主成分向量与污秽度之间存在密切的关系,可以为外绝缘污秽状态评估提供重要参考。
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| 关 键 词： | 绝缘子 泄漏电流 主成分分析 聚类分析 等值附盐密度 |
Evaluation of Contamination Levels of Outdoor Insulators Based on the Principal Components Analysis of Leakage Current Pulses |
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| Mao Yingke, Guan Zhicheng Wang Liming Ma Yi Wen Hua Li Ruihai.Evaluation of Contamination Levels of Outdoor Insulators Based on the Principal Components Analysis of Leakage Current Pulses[J].Transactions of China Electrotechnical Society,2009,24(8). |
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| Authors: | Mao Yingke Guan Zhicheng Wang Liming Ma Yi Wen Hua Li Ruihai |
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| Affiliation: | 1. Tsinghua University Shenzhen 518055 China 2. Tsinghua University Beijing 100084 China 3. Yunnan Electric Power Test & Research Institute Group Co.;Ltd. Kunming 650051 China |
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| Abstract: | Evaluation of contamination levels of outdoor insulators is very necessary to prevent the pollution flashover accidents. Artificial pollution tests were carried out on a kind of widely used glass insulator. Leakage current waveform in different equivalent salt deposit density (ESDD) and different relative humidity (RH) were recorded by a leakage current monitoring system. 80 levels of leakage current pulses were picked out from it. Principle components including most information of the pulses were extracted... |
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| Keywords: | Insulator leakage current principal components analysis cluster analysis equivalent salt deposit density (ESDD) |
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