Fiber laser sensor based on a phase-shifted chirped grating for acoustic sensing of partial discharges

dc.contributor.author Lima,SEU en
dc.contributor.author Farias,RG en
dc.contributor.author Araujo,FM en
dc.contributor.author Ferreira,LA en
dc.contributor.author José Luís Santos en
dc.contributor.author Vladimiro Miranda en
dc.contributor.author Orlando Frazão en
dc.date.accessioned 2018-01-23T13:31:01Z
dc.date.available 2018-01-23T13:31:01Z
dc.date.issued 2013 en
dc.description.abstract Acoustic emission monitoring is often used in the diagnosis of electrical and mechanical incipient faults in the high voltage apparatus. Partial discharges are a major source of insulation failure in electric power transformers, and the differentiation from other sources of acoustic emission is of the utmost importance. This paper reports the development of a new sensor concept - a fiber laser sensor based on a phase-shifted chirped fiber grating - for the acoustic emission detection of incipient faults in oil-filled power transformers. These sensors can be placed in the inner surface of the transformer tank wall, not affecting the insulation integrity of the structure and improving fault detection and location. The performance of the sensing head is characterized and compared for different surrounding media: air, water, and oil. The results obtained indicate the feasibility of this sensing approach for the industrial development of practical solutions. © 2012 The Author(s). en
dc.identifier.uri http://repositorio.inesctec.pt/handle/123456789/7284
dc.identifier.uri http://dx.doi.org/10.1007/s13320-012-0089-9 en
dc.language eng en
dc.relation 208 en
dc.relation 347 en
dc.relation 4061 en
dc.rights info:eu-repo/semantics/openAccess en
dc.title Fiber laser sensor based on a phase-shifted chirped grating for acoustic sensing of partial discharges en
dc.type article en
dc.type Publication en
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