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8 September 2010 Fibre laser sensor based on a phase-shifted chirped grating for acoustic sensing of partial discharges in power transformers
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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.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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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