电测与仪表Issue(18)：5-9,5.
去极化电流法对10 kV 电缆绝缘老化诊断的研究
Diagnosis of 10 kV XLPE cables insulation aging condition based on the depolarization current method
摘要
Abstract
In order to assess the 10kV power cable insulation condition simply and rapidly , this paper proposed a di-agnosis method based on the depolarization current .Insulation conditions of water tree aged XLPE cable were assessed using this method , and the diagnosis parameters of the method were discussed .Firstly, a water-needle method was employed to obtain water tree aged cables samples .Using the virtual instrument ( Labview ) , Keithely picoammeters and high-voltage vacuum switch system , a current test platform was constructed to collect the depolarization current . Samples of different length were subjected to perform depolarization current measurements , and diagnosis method based on depolarization discharge quantity was put forward by integrating the depolarization current measurement curve .The results show that depolarization discharge quantity of long cable is greater than that of short one , and the depolarization current values of samples tend to increase with aging time .The experiment indicates that depolarization current measurements can effectively assess the insulation condition of power cable .关键词
10 kV电缆/老化/去极化/放电量Key words
10kV cable/aging/depolarization/discharge quantity分类
信息技术与安全科学引用本文复制引用
杨伟,甘文风,刘勇,雷勇,周凯,蒋世超..去极化电流法对10 kV 电缆绝缘老化诊断的研究[J].电测与仪表,2015,(18):5-9,5.基金项目
国家自然科学基金资助项目 （）
