Fibre laser sensor based on a phase-shifted chirped grating for acoustic sensing of partial discharges in power transformers

S. E. U. Lima; O. Frazão; R. G. Farias; F. M. Araújo; L. A. Ferreira; V. Miranda; J. L. Santos

doi:10.1117/12.865733

8 September 2010 Fibre laser sensor based on a phase-shifted chirped grating for acoustic sensing of partial discharges in power transformers

S. E. U. Lima, O. Frazão, R. G. Farias, F. M. Araújo, L. A. Ferreira, V. Miranda, J. L. Santos

Author Affiliations +

Proceedings Volume 7653, Fourth European Workshop on Optical Fibre Sensors; 765335 (2010) https://doi.org/10.1117/12.865733
Event: (EWOFS'10) Fourth European Workshop on Optical Fibre Sensors, 2010, Porto, Portugal

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.

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S. E. U. Lima, O. Frazão, R. G. Farias, F. M. Araújo, L. A. Ferreira, V. Miranda, and J. L. Santos "Fibre laser sensor based on a phase-shifted chirped grating for acoustic sensing of partial discharges in power transformers", Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 765335 (8 September 2010); https://doi.org/10.1117/12.865733

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