Title :
An optical fibre-based acoustic sensor for detecting electrical discharges in SF6 puffer circuit breakers
Author :
Cosgrave, J.A. ; Spencer, J.W. ; Jones, G.R. ; Lewis, K.G. ; Hall, W.B.
Author_Institution :
Liverpool Univ., UK
Abstract :
The optical fibre sensor employed to monitor the acoustic emissions utilizes laser speckle produced by multi-mode optical fibres, a technique known as fibredyne interferometry. This contribution will describe the optical sensing system and the experiments undertaken on a 145 kV SF6 puffer circuit breaker test bed, and will provide some preliminary analysis of these results
Keywords :
gas blast circuit breakers; 145 kV; SF6; acoustic emission; electrical discharge; fibredyne interferometry; laser speckle; multimode optical fibre; optical fibre sensor; puffer circuit breaker;
Conference_Titel :
Dielectric Materials, Measurements and Applications, Seventh International Conference on (Conf. Publ. No. 430)
Conference_Location :
Bath
Print_ISBN :
0-85296-670-9
DOI :
10.1049/cp:19961047
