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Proceedings Paper

Experimental study of different approaches to the measurement of mechanical vibrations in transformers with fiber-optic interferometric intrinsic sensors
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Paper Abstract

Interferometric sensing with an optical fiber as an intrinsic transducer is presented for core vibrations and windings vibrations inside two power transformers. Different approaches to in-field measurements are compared experimentally. The design of the fiber-optic probes is of enhanced sensitivity, with compensation of external influences and is shown to withstand the harsh transformer conditions. The sensors are based on detecting dynamic deformations in-contact with the magnetic laminates of the core, or dynamic displacement between two elements of a block inside the transformer. In all cases a differential scheme is used for detecting the elongation on one or more sections of a fiber, but several configurations are considered in the detection of the optical phase. Our results show direct measurements of the vibrations of the transformers at significant regions for its predictive diagnosis.

Paper Details

Date Published: 23 May 2005
PDF: 4 pages
Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.623282
Show Author Affiliations
J. A. Garcia-Souto, Univ. Carlos III de Madrid (Spain)
H. Lamela, Univ. Carlos III de Madrid (Spain)

Published in SPIE Proceedings Vol. 5855:
17th International Conference on Optical Fibre Sensors
Marc Voet; Reinhardt Willsch; Wolfgang Ecke; Julian Jones; Brian Culshaw, Editor(s)

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