Dielectric breakdown in nonuniform field air gaps

Author

Allen, N.L. ; Boutlendj, M. ; Lightfoot, H.A.

Author_Institution

Dept. of Electron. & Electr. Eng., Leeds Univ., UK

Volume

28

Issue

2

fYear

1993

fDate

4/1/1993 12:00:00 AM

Firstpage

183

Lastpage

191

Abstract

The sparkover characteristics of rod-rod and rod-plane gaps in air under DC voltages are reviewed. The linear characteristics of both configurations are associated with the prominence of streamer discharges during the prebreakdown phase. The limits of linearity are shown to be a function of humidity, gap spacing and electrode profile, all of which determine the predischarge mode. It is shown that the rod-plane gap offers a wider range of linearity than the rod-rod gap and that it can have a valid role as a DC voltage measurement tool

Keywords

discharges (electric); electric breakdown of gases; flashover; gaseous insulation; spark gaps; voltage measurement; DC voltage measurement tool; DC voltages; dielectric breakdown; electrode profile; gap spacing; humidity; linear characteristics; nonuniform field air gaps; prebreakdown phase; predischarge mode; rod-plane gap; rod-plane gaps; rod-rod gap; sparkover characteristics; streamer discharges; Air gaps; Atmospheric measurements; Breakdown voltage; Dielectric breakdown; Electric breakdown; Electrodes; Helium; Humidity; Linearity; Voltage measurement;

fLanguage

English

Journal_Title

Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

0018-9367

Type

jour

DOI

10.1109/14.212243

Filename

212243