Power frequency AC sparkover voltage measurements of small air gaps

Author

Barsch, Jeffrey A. ; Sebo, Stephen A. ; Kolcio, Nestor

Author_Institution

Ohio State Univ., Columbus, OH, USA

Volume

14

Issue

3

fYear

1999

fDate

7/1/1999 12:00:00 AM

Firstpage

1096

Lastpage

1101

Abstract

This paper present results of tests conducted in the High Voltage Laboratory of the Ohio State University and deals with power frequency AC sparkover voltage measurement of small air gaps. Emphasis was placed on obtaining breakdown characteristics of electrodes and air gap separations that are representative of power lines 69 kV and below. Besides the customary rod-rod, rod-plane, and sphere-plane arrangements, other electrode configurations included various conductor sizes with conductor-rod, -plane, and -sphere arrangements and conductor-hot stick configurations with hook, puller, and wire brush accessories. It was found that the conductor size has a significant effect on the sparkover voltage. In addition, for the more practical electrode arrangement involving conductors, the sparkover voltages were greater than the rod-rod results in all but a few instances

Keywords

air gaps; conductors (electric); electrodes; flashover; voltage measurement; High Voltage Laboratory; Ohio State University; air gap separations; conductor size; conductor sizes; conductor-hot stick configuration; conductor-plane gaps; conductor-rod gaps; conductor-sphere gaps; electrode breakdown characteristics; electrode configurations; power frequency AC sparkover voltage measurements; rod-plane gaps; rod-rod gaps; small air gaps; sphere-plane gaps; wire brush accessories; Air gaps; Brushes; Conductors; Electric breakdown; Electrodes; Frequency; Laboratories; Testing; Voltage measurement; Wire;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.772359

Filename

772359