Development of Kerr electro-optic 3-d electric field measuring technique and its experimental verification

Author

Shimizu, R. ; Matsuoka, M. ; Kato, K. ; Hayakawa, N. ; Hikita, M. ; Okubo, H.

Author_Institution

Dept. of Electr. Eng., Nagoya Univ., Japan

Volume

3

Issue

2

fYear

1996

fDate

4/1/1996 12:00:00 AM

Firstpage

191

Lastpage

196

Abstract

We have developed a method to measure 3-dimensional electric field distributions in liquid dielectrics using the Kerr electro-optic effect combined with ac field modulation and circularly polarized light. We derived theoretical relations between an arbitrary electric field vector and a transmitted light intensity. The derived equations were verified by comparing the theoretical electric field profile with the experimental one in transformer oil with an axisymmetric electrode configuration, i.e. measured electric field vectors proved to agree well with theoretical ones. The light intensities experimentally obtained were transformed into axisymmetric electrode configuration by Abel transformation to calculate the electric field distribution

Keywords

Kerr electro-optical effect; dielectric measurement; electric field measurement; insulation testing; power transformer insulation; power transformer testing; transformer oil; AC field modulation; Abel transformation; Kerr electro-optic measurement; axisymmetric electrode; circularly polarized light; liquid dielectrics; three-dimensional electric field distribution; transformer oil; Dielectric liquids; Dielectric measurements; Electric fields; Electric variables measurement; Electrodes; Electrooptic modulators; Equations; Oil insulation; Optical modulation; Optical polarization;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.486769

Filename

486769