投切电容器组专用真空断路器性能研究  

Study on the Performance of Special Vacuum Breaker for Switching Capacitor Banks

作　　者：张华赢 杨兰均[2] 李良书[3] 张伟政[4] 梁驹[5] 全永利 

机构地区：[1]南方电网科学研究院,广东广州510080 [2]西安交通大学电力设备电气绝缘国家重点实验室,陕西西安710049 [3]陕西电力科学研究院,陕西西安710054 [4]郑州电业局,河南郑州450006 [5]北京航天飞控中心,北京100094 [6]内蒙古巴彦淖尔市电业局,内蒙古巴彦淖尔016000

出　　处：《电力电容器与无功补偿》2011年第3期38-44,共7页Power Capacitor & Reactive Power Compensation

摘　　要：真空断路器切除并联电容器组时,如果发生重燃可引起较高的操作过电压,对电容器组等设备危害严重。降低真空断路器的重燃率是限制切除电容器组过电压的根本措施。笔者在分析研究真空断路器重燃机理的基础上,提出采用带串联电阻真空断路器的方法,通过限制合闸涌流和断口恢复电压的幅值,达到降低真空断路器切电容器组重燃率的目的。Restrike caused by cutting shunt capacitor banks with vacuum breaker may lead to sever switching over voltage,which causes great damage to power apparatus.Reducing vacuum breaker＇ restrike rate is the ultimate solution to limit over voltage incited by cutting shunt capacitor banks.In this work,a new method of limiting the vacuum breaker＇ restrike rate is proposed based on the analysis of restrike mechanism.This method applies a resistor to the vacuum breaker,which can limit switch-on inrush current and the recovery voltage of break,and further reduce the restrike rate of vacuum switches when cutting shunt capacitor banks.

关 键 词：真空断路器 并联电容器组 涌流 恢复电压 重燃 

分 类 号：TM561.2[电气工程—电器]