Title :
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
fDate :
11/1/1995 12:00:00 AM
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;
Journal_Title :
Science, Measurement and Technology, IEE Proceedings -
DOI :
10.1049/ip-smt:19952028
