输电线路绝缘子泄漏电流特征量提取综述  

Summary of the Transmission Line Insulator Leakage Current Characteristics Extraction

作　　者：苗鹏超 徐志钮[1] 

机构地区：[1]河北省输变电设备安全防御重点实验室(华北电力大学),河北保定071003

出　　处：《高压电器》2014年第8期127-138,共12页High Voltage Apparatus

基　　金：国家高技术研究发展计划(863计划)资助项目(2011AA05A121);中央高校基本科研业务费专项资金资助项目(13ZD14)资助~~

摘　　要：基于绝缘子泄漏电流可以有效预测绝缘子的污秽度,污闪、冰闪发生的可能性以及绝缘材料的老化状况,绝缘子泄漏电流特征量的提取和选择对其外绝缘状况以及材料老化状况预测的准确性具有重要影响。针对绝缘子泄漏电流特征量提取及应用方面的研究开展得已经非常广泛,非常有必要进行系统地综述。笔者对泄漏电流应用于绝缘子污秽度、污闪及冰闪电压预测、绝缘材料老化状况监测几个方面进行了系统地综述,将泄漏电流特征量分为幅值类特征量、波形及谐波类特征量和其它常见特征量3大类,系统介绍了各个特征量的研究进展,最后对绝缘子泄漏电流特征量提取方面进行了初步的展望。文章对进一步开展绝缘子泄漏电流研究具有较好的参考价值。Insulator leakage current can effectively predict the degree of its contamination, the possibility of the occurrence of pollution flashover, icing flashover and the level of aging of insulation materials. The extraction and selection of leakage current characteristic has a prominent influence on the accuracy of the monitoring of the external insulation condition and material aging level. The leakage eurrent eharaeteristics extractions have been conducted extensively and a systematic summarization is in urgent necessary. In this paper, the applications of leakage current characteristics are reviewed in a systematic way, including the forecasting of the insulators contamination degree, the pollution and icing flashover and the monitoring of insulations aging level. The leakage current characteristics are elassified into 3 categories： the amplitude characteristics, the waveform and harmonie characteristics and the other eharaeteristies. Finally, the research progressing of each individual characteristic is systematically introduced and analyzed, and a preliminary forecast in this field is given. This paper can be taken as a good reference for the further study of insulator leakage current.

关 键 词：绝缘子 泄漏电流 特征量 污闪 冰闪 老化 

分 类 号：TM216[一般工业技术—材料科学与工程]