电容型设备相对比较法的带电测试  

Application of Capacitive Equipments On-line Detection by Relative Comparison Method

作　　者：刘胜军[1] 刘超[1] 乔红军[1] 王慷[1] 

机构地区：[1]保定供电公司,河北保定071000

出　　处：《绝缘材料》2007年第3期55-57,共3页Insulating Materials

摘　　要：电容型设备带电测试比传统预防性试验更易受外部环境、运行状况、测量方式等因素影响,导致测量结果分散性大,难以准确反映设备绝缘状况。为此,本文介绍了一种测量两组电容型设备介损差值与电容量比值的相对比较法带电测试方法,通过参考设备和被试设备之间的对比测量,消除了外部环境、运行情况发生变化而导致的测量结果波动。正常设备与缺陷设备的现场测量结果表明该法的长期测量结果稳定,易消除外部因素对测量结果的影响。Capacitive equipments on-line detection is more easily influenced by external environment, operational status, measuring mode and so on than conventional preventive test. It results in test result too dispersive to accurately reflect status of equipment insulation. So this paper introduced a test method 0n-line Detection to test dielectric loss angle tangent difference and electric capacity ratio of two Capacitive Equipments. It removes test result fluctuation owing to change of external environment and operational status through contrast test between reference equipment and tested equipment. Field test results of regular equipments and defective equipments indicate that long-term test results through the test method are steady and the test method easily removes influence of external environment factor to test result.

关 键 词：相对比较法 绝缘带电测试 电容型设备 

分 类 号：TM934.32[电气工程—电力电子与电力传动] TM934.2