沿面闪络真空开关触发特性的实验研究  

Experimental Research on Triggering Characteristics of Surface Flashover Triggered Vacuum Switch

作　　者：姚学玲[1] 陈景亮[1] 孙伟[2] 

机构地区：[1]西安交通大学电力设备电气绝缘国家重点实验室,西安710049 [2]西安建筑科技大学机电系,西安710055

出　　处：《高电压技术》2010年第2期340-344,共5页High Voltage Engineering

基　　金：教育部新世纪人才支持计划(NCET-08-0438)~~

摘　　要：触发真空开关(triggered vacuumswitch,TVS)是脉冲功率技术的核心器件,为满足对TVS放电时延及其分散性、工作电压范围、通流容量等的要求,设计了高介电系数的电介质材料制作的沿面闪络真空开关,研究了触发脉冲、主间隙两端的电压对TVS放电时延及其分散性的影响规律。实验研究表明:采用高介电常数电介质材料制作的沿面闪络真空开关,在自击穿电压为120 kV的条件下,TVS的最小工作电压为1.3 kV,工作电压范围为1.08%～99%;最大的放电时延<400 ns,最小的放电时延为130 ns,最小的时延分散性为±10 ns;TVS的通过的电流峰值>150 kA。该TVS不仅满足一般放电开关的性能要求,用于高电压、大电流脉冲功率技术中,而且可以用于对放电开关有特殊要求的Crowbar回路中。The triggering characteristics of TVS（triggered vacuum switch） were focused,and these characteristics include discharging delay time,delay jitter,operating voltage and charge per pulse etc..The structure of TVS was designed and the experimental circuit of TVS was set up,the experiments were carried out to study the influential factors including triggering voltage and the voltage across the main electrodes.The experimental results indicate that the triggered vacuum switch with high dielectric permittivity ceramic material triggering device has excellent triggering characteristics.When the hold-off voltage reach to 120 kV,and the minimum operation voltage is 1300V,the operating voltage range can be ensured over a very large charging voltage between 1.08% and 99% of its self-breakdown voltage.The maximum discharging delay time is less than 400 ns,and the minimum discharging delay time and jitter are 130 ns and ±10 ns,respectively.The peak current is up to 150 kA.The triggered vacuum switch can most sufficiently satisfy the main demands of a high voltage and current,and it can be also used inmany crowbar circuit application circumstances.

关 键 词：沿面闪络 电介质材料 触发型真空开关 放电时延 时延分散性 工作电压范围 

分 类 号：TM564[电气工程—电器]