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Mandrel-Based Fiber-Optic Sensors for Acoustic Detection of Partial Discharges - a Proof of Concept

Title
Mandrel-Based Fiber-Optic Sensors for Acoustic Detection of Partial Discharges - a Proof of Concept
Type
Article in International Scientific Journal
Year
2010
Authors
Sanderson E U Lima
(Author)
Other
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Orlando Frazao
(Author)
FCUP
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Rubem G Farias
(Author)
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Francisco M Araujo
(Author)
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Luis A Ferreira
(Author)
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Jose L Santos
(Author)
FCUP
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Vladimiro Miranda
(Author)
FEUP
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Journal
Vol. 25 No. 4
Pages: 2526-2534
ISSN: 0885-8977
Publisher: IEEE
Indexing
Scientific classification
FOS: Engineering and technology > Electrical engineering, Electronic engineering, Information engineering
Other information
Authenticus ID: P-003-2E0
Abstract (EN): Acoustic emission monitoring is often used in the diagnosis of electrical and mechanical incipient faults in high-voltage apparatus. Partial discharges are a source of failure in power transformers, and the differentiation from other sources of acoustic emissions is of the utmost importance. This paper reports the development of a new sensor concept-mandrel-based fiber-optic sensor-for the detection of incipient faults in oil-filled power transformers, taking direct measurements inside a transformer. 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 applicability of these acoustic sensors in air, water, and oil is investigated and the paper presents the promising results obtained, which will enable the industrial development of practical solutions.
Language: English
Type (Professor's evaluation): Scientific
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