Extrinsic and intrinsic fiber optic interferometric sensors for acoustic detection in high-voltage environments

• Type: Article in International Scientific Journal
• Date: 2009

Authors

Sanderson E U Lima (Author) Other; Orlando Frazao (Author) Other; Francisco M Araujo (Author) Other; Luis A Ferreira (Author) Other; Vladimiro Miranda (Author) FEUP; Jose Luis Santos (Author) FCUP

Journal

Title: Optical Engineering

Vol. 48 No. 2

Final page: 024401

ISSN: 0091-3286

Publisher: SPIE

Indexing

ISI Web of Knowledge - 14 Citations

ISI Web of Science

Scopus - 17 Citations

COMPENDEX

INSPEC

Scientific classification

FOS: Natural sciences > Physical sciences

CORDIS: Technological sciences > Engineering > Electrical engineering

Other information

Authenticus ID: P-003-NM9

DOI: 10.1117/1.3080752

Abstract (EN): Incipient fault diagnosis is closely related to insulation condition assessment. A great number of methods are available for condition monitoring and diagnosis of power transformer insulation systems, but only few of them can take direct measurements inside the transformer. Fiber optic sensors can be applied to incipient fault diagnosis. In particular, acoustic sensors have been developed for detection and location of partial discharges in oil-filled power transformers. We report the study of extrinsic and intrinsic fiber Fabry-Perot sensors that can be used to detect the acoustic waves that are generated by a partial discharge inside a power transformer. A comparative analysis is done to determine the best sensing head configuration and some methods to improve the parameter readout sensitivity are proposed. The sensing head behaviour when immersed in different fluids (air, water, and oil) is also investigated. (c) 2009 Society of Photo-Optical Instrumentation Engineers. [DOI: 10.1117/1.3080752]

Language: English

Type (Professor's evaluation): Scientific