An optical fibre-based acoustic sensor for detecting electrical discharges in SF6 puffer circuit breakers

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An optical fibre-based acoustic sensor for detecting electrical discharges in SF6 puffer circuit breakers

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Seventh International Conference on Dielectric Materials, Measurements and Applications — Recommend this title to your library

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  • DOI:  10.1049/cp:19961047
  • ISBN: 0 85296 670 9
  • Location: Bath, UK
  • Conference date: 23-26 Sept. 1996
  • Format: PDF
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.

Inspec keywords: SF6 insulation; gas blast circuit breakers; light interferometry; speckle; partial discharges; fibre optic sensors; acoustic emission testing

Subjects: Sonic and ultrasonic applications; Switchgear; Fibre optic sensors; Gaseous insulation, breakdown and discharges

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