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7 November 2012 A hybrid fiber-optic sensor system for multi-stress monitoring of high-voltage power transformer
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Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 8421BF (2012) https://doi.org/10.1117/12.975129
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China
Abstract
For condition monitoring of high-voltage power transformers, a fiber-optic multi-stress sensing system is suggested by combining fiber grating sensors and mandrel sensors embedded in a fiber-optic Sagnac interferometer. The gratings and the mandrel sensors measure the temperature and the vibrations at multi-locations in a power transformer. To separate and demodulate the sensor outputs, we used a wavelength-sweeping laser source and placed a fiber-optic attenuator in the Sagnac loop, which enabled to separate the Bragg wavelengths from the transmission spectrum. The temperature and vibrations of multi-locations could be measured at the same time by using optical circuit and single signal processing unit.
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Hyunjin Kim, Hyoung-jun Park, and Minho Song "A hybrid fiber-optic sensor system for multi-stress monitoring of high-voltage power transformer", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 8421BF (7 November 2012); https://doi.org/10.1117/12.975129
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