Title :
Online Measurement of Pulsed Electric Field of Insulator Surface in Vacuum Based on Kerr Effect
Author :
Weili Liu ; Yangyang Fu ; Xiaobing Zou ; Peng Wang ; Xinxin Wang
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
An online measurement system based on Kerr electro-optical effect is developed to investigate the surface electric field of insulator stressed by high-voltage (HV) pulse in vacuum. A basic principle of Kerr effect is narrated. According to this principle, a circular optical polarization configuration is arranged to detect the phase difference caused by Kerr effect. An 180-kV Marx generator and an HV cable serving as pulseforming line are utilized to output an HV pulse stressing on insulator specimen in Kerr cell. In addition, a synchronous controlling apparatus is developed to make sure that an online measurement on surface electric field is performed during the HV pulse being stressed on the insulator. As a result, distortion of surface electric field of insulator is observed in experiments preliminarily.
Keywords :
electric fields; insulators; measurement systems; optical Kerr effect; polarisation; pulse generators; pulsed power supplies; HV cable; Kerr effect; Marx generator; circular optical polarization configuration; high-voltage pulse; insulator surface; online measurement system; phase difference; pulsed electric field; surface electric field; synchronous controlling apparatus; vacuum; voltage 180 kV; Electric variables measurement; Electrodes; Gas lasers; Insulators; Measurement by laser beam; Pulse measurements; Surface charging; Electric field measurement; Kerr effect; flashover; vacuum insulator; vacuum insulator.;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2014.2316149
