断路器断口均压电容器10kV下介损偏高原因分析  

Analysis of Cause of High Dielectric Loss Under 10 kV Stress of Grading Capacitor Across Open Contacts of Circuit Breaker

作　　者：孙利朋 刘赟 黎刚 卢杰 SUN Lipeng;LIU Yun;LI Gang;LU Jie(State Grid Hunan Electric Power Corporation Research Institute,Changsha 410007,China;State Grid Yueyang Power Supply Company,Hunan Yueyang 414000,China)

机构地区：[1]国网湖南省电力有限公司电力科学研究院,长沙410007 [2]国网湖南省电力有限公司岳阳供电分公司,湖南岳阳414000

出　　处：《电力电容器与无功补偿》2021年第4期165-169,共5页Power Capacitor & Reactive Power Compensation

摘　　要：本文针对国内某工程交接试验中大量10 kV下介损超标的断路器断口均压电容器,开展了高压介损、局部放电、密封性试验、油色谱分析等试验,发现电容量与试验电压、介损值的减小值和电容量的减小值、金属颗粒含量与10 kV下介损值有一定的关系,对其原因进行了综合分析,可为后续的相关研究提供参考。In view of grading capacitor with a large number of excessive 10 kV dielectric loss in a certain handover test in China in this paper,the test such as high-voltage dielectric loss,partial discharge,tightness and oil chromatogram analysis are performed.If is found that capacitance and the test voltage,reduction of dielectric loss and capacitance,contents of metal particle have a definite relationship with 10 kV dielectric loss value.The causes are comprehensively analyzed,which can provide reference for the subsequent related study.

关 键 词：电容器 介质损耗 断路器 GARTON效应 

分 类 号：TM561[电气工程—电器]