Evaluation of Contamination Levels of Outdoor Insulators Based on the Principal Components Analysis of Leakage Current Pulses
Mao Yingke1, 2, Guan Zhicheng1, Wang Liming1, Ma Yi3, Wen Hua3, Li Ruihai3
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
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 by using principal components analysis (PCA). The results of the cluster analysis and comprehensive principal components analysis show that the principal components of the leakage current pulses are tightly relative to the contamination levels. They provide a good approach to evaluate the contamination levels.
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): 39-45.
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. Transactions of China Electrotechnical Society, 2009, 24(8): 39-45.
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2009, Vol. 24 
