Electrical field distribution in transformer oil

Author

Gäfvert, Uno ; Jaksts, Albert ; Törnkvist, Christer ; Walfridsson, Lars

Author_Institution

ABB Corp. Res., Vasteras, Sweden

Volume

27

Issue

3

fYear

1992

fDate

6/1/1992 12:00:00 AM

Firstpage

647

Lastpage

660

Abstract

Developments in Kerr electro-optic measurement technology at the laboratory have made possible high resolution electric field measurements in nonpolar liquids. The electric field distribution in transformer oil has been studied at service stress levels in both the transient and steady state. The field distributions observed are well described by a one-dimensional quantitative model (with measurable parameters) based on charge carrier generation through dissociation of a species of ion pairs in the liquid bulk. As two-dimensional measurements are also possible, an engineering tool now exists which can be used, for example, in the study of geometries relevant for converter transformer design

Keywords

Kerr electro-optical effect; electric fields; high-voltage engineering; insulating oils; insulation testing; transformer insulation; HVDC; Kerr electro-optic measurement; charge carrier generation; converter transformer design; dissociation; electric field distribution; ion pairs; nonpolar liquids; one-dimensional quantitative model; service stress levels; steady state; transformer oil; transient state; Charge carriers; Charge measurement; Current measurement; Design engineering; Electric variables measurement; Laboratories; Liquids; Oil insulation; Steady-state; Stress;

fLanguage

English

Journal_Title

Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

0018-9367

Type

jour

DOI

10.1109/14.142730

Filename

142730