电晕均压多间隙串联气体开关特性实验  

Breakdown characteristics of a multi-gap gas switch with corona discharge for voltage balance

作　　者：姜晓峰[1] 丛培天[1] 孙凤举[1] 孙铁平[1] 梁天学[1] 魏浩[1] 王志国[1] 

机构地区：[1]西北核技术研究所,强脉冲辐射环境模拟与效应国家重点实验室,西安710024

出　　处：《强激光与粒子束》2016年第7期154-158,共5页High Power Laser and Particle Beams

基　　金：强脉冲辐射环境模拟与效应国家重点实验室基础研究课题(SKLIPR1303)

摘　　要：研制了一种电晕放电均压的小型多间隙串联气体开关,分析了电晕放电在开关工作过程中的作用,开展了开关自击穿特性、电晕放电伏安特性、针尖烧蚀以及开关寿命测试等特性实验。结果表明:老练后开关自击穿电压标准偏差小于3.5%,电晕均压效果明显;随着放电次数增加,电晕针尖逐渐钝化,触发性能变化不大;开关电晕放电电流随耐受电压升高增大,增长趋势逐渐变快;开关充400kPa干燥空气,±100kV工作电压下开关放电50 000次以上,触发性能稳定,触发击穿时延抖动约4.3ns,自放电概率低于1×10^(-4)。A multi-gap gas switch with corona discharge for voltage balance is developed.The self-breakdown characteristics of the switch at different gas pressures,the voltage-current characteristics of corona discharge,the needle erosion and the switch life time are studied respectively.The experiment results show that after conditioning the switch self-breakdown voltage relative standard deviation is less than 3.5%,the voltage balance has good effect.The voltage-current characteristics line of multi-gap corona discharge is similar to a parabola form.When the switch is pumped 400 kPa dry air and the work voltage is±100kV,the switch lifetime can reach more 50 000 times,the jitter of the switch breakdown delay time is about 4.3ns,the per fire probability of the switch can be lower than 1×10^(-4).

关 键 词：快脉冲直线变压器驱动源 多间隙串联气体开关 自击穿 伏安特性 电晕放电 烧蚀 

分 类 号：TM836[电气工程—高电压与绝缘技术]