真空绝缘子脉冲表面电场在线测量系统的实现  

On-line measurement system on pulsed surface electric field of insulators in vacuum

作　　者：刘微粒[1] 邹晓兵[1] 付洋洋[1] 王鹏[1] 王新新[1] 

机构地区：[1]清华大学电机系,北京100084

出　　处：《强激光与粒子束》2014年第4期85-90,共6页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(51107064);教育部博士点基金项目(20100002120007)

摘　　要：基于Kerr电光效应,建立了用以对纳秒脉冲高电压作用下的真空绝缘子表面电场进行在线测量的实验系统。该测量系统由快脉冲高电压源、YAG激光器、同步控制系统、被测中空薄壁绝缘子及Kerr效应单元、光学相位差检测系统等部分构成。利用YAG激光器输出的激光脉冲,触发导通快脉冲高压源中的高压气体开关,使其给被测绝缘子试品上施加一个脉宽100ns的高压脉冲方波。利用同步控制,使得探测激光在试品上的脉冲方波达到幅值后,入射到Kerr腔体中对Kerr效应进行探测。从而实现了对绝缘子表面电场的在线测量,并给出了初步的测量结果。An on-line measurement system based on Kerr effect is established to investigate the surface electric field of insulators stressed by nanosecond high-voltage(HV)pulse in vacuum.A 180kV Marx generator with the high-voltage cable as the pulse forming line are utilized to output a square nanosecond HV pulse stressing on insulator specimen in Kerr cell,once a gas switch is conducted by a laser pulse emitted from a YAG laser.And a synchronous controlling apparatus is developed to make sure that the measurement on surface electric field is performed during the HV pulse being stressing on the insulator.Accordingly,a preliminary experimental observation on surface electric field is performed.

关 键 词：真空绝缘子 表面电场 高压脉冲 KERR效应 电光测量 

分 类 号：TM216[一般工业技术—材料科学与工程] TM930[电气工程—电工理论与新技术]