@inproceedings{5196c518600f44379a3d5f982e294cac,
title = "A hybrid fiber-optic sensor system for multi-stress monitoring of high-voltage power transformer",
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 single optical circuit and single signal processing unit.",
keywords = "Attenuator, Fiber Bragg grating, High-voltage transformer, Sagnac interferometer, Wavelength-sweeping laser",
author = "Hyunjin Kim and Park, \{Hyoung Jun\} and Minho Song",
year = "2012",
doi = "10.1117/12.975129",
language = "English",
isbn = "9780819491039",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "22nd International Conference on Optical Fiber Sensors",
note = "22nd International Conference on Optical Fiber Sensors ; Conference date: 15-10-2012 Through 19-10-2012",
}