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Proceedings Paper

Distributed acoustic sensing: towards partial discharge monitoring
Author(s): Philipp Rohwetter; René Eisermann; Katerina Krebber
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Paper Abstract

We report on the successful application of distributed acoustic sensing (DAS) to the detection of partial discharge (PD). A detection limit of about 1 nC discharge magnitude was achieved for PD in a real-scale model of a high voltage termination. Dedicated ultrasonic fibre-optic transducers were interrogated using coherent optical time-domain Rayleigh backscatter reflectometry (C-OTDR). Random quadrature demodulation was employed for retrieving relevant acoustic information from the raw C-OTDR backscatter traces. To our knowledge, our results are a first-time demonstration that quasi-distributed fibre-optic acoustic sensing is a candidate technology for the acoustic partial discharge monitoring of power cable joints and terminations.

Paper Details

Date Published: 28 September 2015
PDF: 4 pages
Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96341C (28 September 2015); doi: 10.1117/12.2194850
Show Author Affiliations
Philipp Rohwetter, BAM Federal Institute for Materials Research and Testing (Germany)
René Eisermann, BAM Federal Institute for Materials Research and Testing (Germany)
Katerina Krebber, BAM Federal Institute for Materials Research and Testing (Germany)


Published in SPIE Proceedings Vol. 9634:
24th International Conference on Optical Fibre Sensors
Hypolito José Kalinowski; José Luís Fabris; Wojtek J. Bock, Editor(s)

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