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

Volume

42

Issue

10

fYear

2014

fDate

Oct. 2014

Firstpage

2986

Lastpage

2990

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.;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2014.2316149

Filename

6824777