Temperature monitoring of power transformer using fiber-optic sensor

A fiber-optic transformer winding temperature sensor based on High Birefringence Fiber Loop Mirror (Hi-Bi FLM) for online temperature monitoring in power transformer is proposed. The proposed sensor works on the principle of interference between two counter propagating light waves having a phase dif...

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Bibliographic Details
Published in2015 1st Conference on Power, Dielectric and Energy Management at NERIST (ICPDEN) pp. 1 - 5
Main Authors Haque, Nasirul, Ittiarah, Jijo V., Gangopadhyay, Tarun Kumar, Chakravorti, Sivaji
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.01.2015
Subjects
Electro-optic Kerr effect
High Birefringent Fiber Loop Mirror (Hi-Bi FLM)
Oil insulation
Optical fiber polarization
Optical fiber sensors
Power transformer insulation
Temperature
Temperature measurement
Temperature sensors
Transformer
Vibration
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Summary:A fiber-optic transformer winding temperature sensor based on High Birefringence Fiber Loop Mirror (Hi-Bi FLM) for online temperature monitoring in power transformer is proposed. The proposed sensor works on the principle of interference between two counter propagating light waves having a phase difference. A detailed theoretical and practical investigation proved this sensor to be suitable for online transformer monitoring applications, showing insensitivity to high electric field as well as transformer vibrations. Experimental results confirmed theoretical predictions, depicting a wavelength sensitivity of 0.58 nm/°C with high accuracy and reversibility, and the minimum detectable temperature variation is 0.173°C.
ISBN:1479964581
9781479964581
DOI:10.1109/ICPDEN.2015.7084488