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Proceedings Paper

Sound detection monitoring in the transformer oil using fiber optic sensor
Author(s): Jongkil Lee
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Paper Abstract

In this paper it is shown that a fundamental technology of hybrid system combining Sagnac interferometer and FBG. Fiber optic sensor array, i.e. two sensors in the Sagnac loop was suggested. Fiber optic sensor array was fabricated in the transformer oil and external sound applied to the sensor directly using by piezoelectric. Tunable laser source was used as a light source. Applied sound frequency range is from 5kHz to 90kHz. From this experiment it is confirmed that fiber optic sensor using Sagnac interferometer in the transformer oil can detect applied sound frequency. In real electric transformer system suggested fiber optic sensor array can be applied to monitoring physical quantities such as internal temperature, sound pressure and vibration due to partial discharge.

Paper Details

Date Published: 11 May 2012
PDF: 6 pages
Proc. SPIE 8370, Fiber Optic Sensors and Applications IX, 83700W (11 May 2012); doi: 10.1117/12.919441
Show Author Affiliations
Jongkil Lee, Andong National Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 8370:
Fiber Optic Sensors and Applications IX
Henry H. Du; Gary Pickrell; Eric Udd, Editor(s)

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