高电压技术2012，Vol.38Issue(4)：797-806,10.
基于Kerr电光效应的冲击电压下液体电介质空间电荷高速CCD测量
Measurements of Space Charge by the High-speed CCD in Liquid Dielectrics Under the Impulse Voltage Based on Kerr Electro-optic Effect
摘要
Abstract
The existence of space charge has an effect on the insulation breakdown properties of a liquid dielectric directly.To study the dynamic process of space charge,we proposed a high-speed charge couple device（CCD） system for space charge measurement in liquid dielectrics based on the Kerr electro-optic effect.The Kerr constant of propylene carbonate at room temperature was obtained using a high-speed photo-detector.Thus the electric field and space charge distribution between a pair of parallel-plate copper electrodes were measured with the high-speed CCD measurement system and the image processing technology.Experimental results show that space charge distributes between the parallel-plate copper electrodes as the pulsed high voltage reaches a certain value.The space charge distribution increases the electric field strength in the middle of two electrodes and decreases the electric field strength near the electrodes.Moreover,the effects of space charge distribution and transportation on the insulation characteristic of liquid dielectrics are analyzed.This study provides a basis for analyzing the generation mechanism of space charge and the influence of space charge distribution on the streamer discharge.关键词
Kerr效应/空间电荷/高速电荷耦合器件（CCD）/流注放电/冲击电压/绝缘特性Key words
Kerr effect/space charge/high-speed charge couple device(CCD)/streamer discharge/impulse voltage/insulation characteristic分类
信息技术与安全科学引用本文复制引用
杨庆,廖磊,施健,司马文霞,袁涛,黄思思..基于Kerr电光效应的冲击电压下液体电介质空间电荷高速CCD测量[J].高电压技术,2012,38(4):797-806,10.基金项目
输配电装备及系统安全与新技术国家重点实验室自主研究项目 （）
