±800kV特高压直流避雷器的均流特性试验  

Current Sharing Performance Tests of Arresters Used in ±800kV DC Transmission System

作　　者：陈立栋[1] 葛栋[1] 康鹏[1] 黎小林 李岩 吕雪斌[1] 

机构地区：[1]中国电力科学研究院,北京市海淀区100192 [2]南方电网技术研究中心,广东省广州市510620

出　　处：《电网技术》2011年第2期13-16,共4页Power System Technology

基　　金："十一五"国家科技支撑计划重大项目(2006BAA2A23)~~

摘　　要：对4柱并联阀片进行了试验,分析了影响±800 kV特高压直流避雷器电流分布不均的因素。结果表明,为达到均流目的,直流1 mA参考电压UDC1mA不均匀偏差值应尽量小,且不均匀系数仍由操作冲击均流特性试验或雷电冲击均流特性试验确定;随着冲击电流的增大,不均匀系数逐渐减小。Through the tests of 4-column parallel arrestor assembly, the impacting factors on the uneven current distribution in arrestors used in ±800kV DC power transmission system are analyzed. Test results show that to achieve the aim of current sharing the deviation of voltage reference UDClmA for DC 1 mA should be as small as possible and the non-uniform coefficient should be determined by switching impulse current sharing test or lightning impulse current sharing test. Along with th increasing of impulse current, the non-uniform coefficient decreases gradually.

关 键 词：±800kV特高压直流 不均匀系数 均流特性试验 

分 类 号：TM76[电气工程—电力系统及自动化]