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Proceedings Paper

Development and field trial of a FBG-based magnetic sensor for large hydrogenerators
Author(s): João P. V. Fracarolli; João B. Rosolem; Elias K. Tomiyama; Claudio Floridia; Rivael S. Penze; Rodrigo Peres; Danilo C. Dini; Claudio A. Hortencio; Paulo I. G. Dilli; Erlon V. da Silva; Marcéu C. dos Santos; Fabiano Fruett
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Paper Abstract

We propose a passive optical sensor for online magnetic field monitoring in large hydrogenerators, based on FBG (Fiber Bragg Grating) technology and a magnestostrictive material (Terfenol-D). The objective of this sensor is to detect faults in the rotor windings due to inter turn short-circuits. This device is packaged in a novel rod-shaped enclosure, allowing it to be easily installed on the ventilation ducts of the stator of the machine. This sensor was developed and tested in laboratory and it has been evaluated in a field test on a 200 MVA, 60 poles hydrogenerator.

Paper Details

Date Published: 12 May 2016
PDF: 6 pages
Proc. SPIE 9852, Fiber Optic Sensors and Applications XIII, 98520L (12 May 2016); doi: 10.1117/12.2223919
Show Author Affiliations
João P. V. Fracarolli, CPqD Foundation (Brazil)
João B. Rosolem, CPqD Foundation (Brazil)
Elias K. Tomiyama, CPqD Foundation (Brazil)
Claudio Floridia, CPqD Foundation (Brazil)
Rivael S. Penze, CPqD Foundation (Brazil)
Rodrigo Peres, CPqD Foundation (Brazil)
Danilo C. Dini, CPqD Foundation (Brazil)
Claudio A. Hortencio, CPqD Foundation (Brazil)
Paulo I. G. Dilli, Tractebel Energia S.A. (Brazil)
Erlon V. da Silva, Tractebel Energia S.A. (Brazil)
Marcéu C. dos Santos, Tractebel Energia S.A. (Brazil)
Fabiano Fruett, Univ. Estadual de Campinas (Brazil)

Published in SPIE Proceedings Vol. 9852:
Fiber Optic Sensors and Applications XIII
Eric Udd; Gary Pickrell; Henry H. Du, Editor(s)

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