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Proceedings Paper

Fibre laser sensor based on a phase-shifted chirped grating for acoustic sensing of partial discharges in power transformers
Author(s): S. E. U. Lima; O. Frazão; R. G. Farias; F. M. Araújo; L. A. Ferreira; V. Miranda; J. L. Santos
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Paper Abstract

Partial discharges are a major source of insulation failure in electric power transformers. Their detection can be achieved through the associated acoustic emissions, and this work reports on the investigation of a fibre laser sensor based on a phase-shifted chirped fibre grating for acoustic emission detection in the power transformer environment. The performance of the sensing head is characterized and compared for different surrounding media: air, water and oil.

Paper Details

Date Published: 9 September 2010
PDF: 4 pages
Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 765335 (9 September 2010); doi: 10.1117/12.865733
Show Author Affiliations
S. E. U. Lima, INESC Porto (Portugal)
Univ. do Porto (Portugal)
O. Frazão, INESC Porto (Portugal)
R. G. Farias, Univ. Federal do Pará (Brazil)
F. M. Araújo, INESC Porto (Portugal)
L. A. Ferreira, INESC Porto (Portugal)
V. Miranda, INESC Porto (Portugal)
Univ. do Porto (Portugal)
J. L. Santos, INESC Porto (Portugal)
Univ. do Porto (Portugal)


Published in SPIE Proceedings Vol. 7653:
Fourth European Workshop on Optical Fibre Sensors
José Luís Santos; Brian Culshaw; José Miguel López-Higuera; William N. MacPherson, Editor(s)

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