| 油纸绝缘的局部放电特征量分析及危险等级评估方法研究 |
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| 引用本文： | 杨丽君,廖瑞金,孙才新,汪可.油纸绝缘的局部放电特征量分析及危险等级评估方法研究[J].中国电机工程学报,2011(1). |
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| 作者姓名： | 杨丽君 廖瑞金 孙才新 汪可 |
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| 作者单位： | 输配电装备及系统安全与新技术国家重点实验室(重庆大学); |
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| 基金项目： | 国家重点基础研究发展计划项目(973项目)(2009CB724505-1); 教育部科技创新工程重大项目培育资金项目资助(707049)~~ |
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| 摘 要： | 以局部放电为特征量,研究油纸绝缘扁平气隙缺陷发展规律及状态评估的方法。首先引入等效时频分析结合模糊聚类方法实现混合放电源的分离,并采用因子分析方法对传统的放电特征量指纹进行降维,提取出新的放电指纹;然后以不同放电阶段的新特征指纹为依据,采用ID3决策树实现了放电发展阶段和风险的评估;最后提出一套以局部放电作为特征参量对绝缘缺陷发展程度和风险进行评估的方案。该方法重点解决了2个问题:一是混合放电源的分离和识别,二是可用于评估油纸绝缘老化程度的放电指纹特征提取和诊断方法。
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| 关 键 词： | 局部放电 油纸绝缘 老化 特征提取 决策树 故障诊断 |
Partial Discharge Characteristics and Risk Assessment Method for Oil-paper |
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| YANG Lijun,LIAO Ruijin,SUN Caixin,WANG Ke,Shapingba District,Chongqing ,China.Partial Discharge Characteristics and Risk Assessment Method for Oil-paper[J].Proceedings of the CSEE,2011(1). |
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| Authors: | YANG Lijun LIAO Ruijin SUN Caixin WANG Ke Shapingba District Chongqing China |
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| Affiliation: | YANG Lijun,LIAO Ruijin,SUN Caixin,WANG Ke(State Key Laboratory of Power Transmission Equipment & System Security and New Technology(Chongqing University),Shapingba District,Chongqing 400044,China) |
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| Abstract: | Partial discharge(PD) characteristics are focused to study the flat cavity defect development rule and risk assessment method for oil-paper.Firstly,the equivalent time-frequency(TF) analysis method,combined with fuzzy clustering method(FCM),was introduced to perform signal separation from mixed PD sources.Secondly,dimension reduction of PD conventional statistical characteristics and new PD features extraction were performed by using the factor analysis method.According to the new PD features at different a... |
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| Keywords: | partial discharge(PD) oil-paper aging feature extraction decision tree fault diagnosis |
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