23 April 2017 A fiber optic multi-stress monitoring system for power transformer
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Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103238J (2017); doi: 10.1117/12.2265676
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of
Abstract
A fiber-optic multi-stress monitoring system which uses 4 FBG sensors and a fiber-optic mandrel acoustic emission sensor is proposed. FBG sensors and a mandrel sensor measure different types of stresses occurring in electrical power transformer, such as temperature and acoustic signals. The sensor system uses single broadband light source to address the outputs of both sensors using single fiber-optic circuitry. An athermal-packaged FBG is used to supply quasi-coherent light for the Sagnac interferometer demodulation which processes the mandrel sensor output. The proposed sensor system could simplify the optical circuit for the multi-stress measurements and enhance the cost-effectiveness of the sensor system.
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Dae-gil Kim, Umesh Sampath, Hyunjin Kim, Minho Song, "A fiber optic multi-stress monitoring system for power transformer", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103238J (23 April 2017); doi: 10.1117/12.2265676; http://dx.doi.org/10.1117/12.2265676
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KEYWORDS
Sensors

Fiber Bragg gratings

Fiber optics sensors

Fiber optics

Transformers

Acoustics

Temperature metrology

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