Optical-fibre monitoring of high frequency parasitic arcs in a puffer circuit breaker

Author

Chaaraoui, J.A. ; Wang, J.S. ; Spencer, J.W. ; Jones, G.R.

Author_Institution

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

Volume

142

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

469

Lastpage

476

Abstract

High-frequency (100 Hz-10 MHz), low current (a few hundred amperes) arcs are formed in SF₆ puffer circuit breakers under certain conditions when inductive loads are switched. There is evidence that such arcs, which are filamentary in nature, can cause damage to the interrupter nozzle. Information about the behaviour and location of such arcs is therefore important for elucidating the nature of the performance-threatening events associated with them. An optical-fibre-based triangulation technique is described for locating the position of these high-frequency filamentary arcs within the circuit breaker nozzle. Results obtained with this system are presented. These show some important trends in arc behaviour that provide an insight into the problem of inductive current interruption

Keywords

SF₆ insulation; circuit-breaking arcs; fibre optic sensors; gas blast circuit breakers; nozzles; position measurement; 100 Hz to 10 MHz; SF₆; SF₆ puffer circuit breakers; arc location; high frequency parasitic arcs; inductive current interruption; inductive loads switching; interrupter nozzle damage; low current arcs; optical-fibre monitoring; optical-fibre-based triangulation technique;

fLanguage

English

Journal_Title

Science, Measurement and Technology, IEE Proceedings -

Publisher

iet

ISSN

1350-2344

Type

jour

DOI

10.1049/ip-smt:19952028

Filename

487637