An on-line transformer windings temperature measurement system based on fiber Bragg grating

Zao Cheng; Lin Cheng; Wei Li; Jianhua Zhou; Kecheng Yang; Xiaohui Zhang

doi:10.1117/12.919019

17 February 2012 An on-line transformer windings temperature measurement system based on fiber Bragg grating

Zao Cheng, Lin Cheng, Wei Li, Jianhua Zhou, Kecheng Yang, Xiaohui Zhang

Proceedings Volume 8332, Photonics and Optoelectronics Meetings (POEM) 2011: Optoelectronic Sensing and Imaging; 83320H (2012) https://doi.org/10.1117/12.919019
Event: Photonics and Optoelectronics Meetings 2011, 2011, Wuhan, China

Abstract

Actual temperature distribution inside the transformer is unknown currently, since it is difficult to measure temperature of transformer winding by traditional transformer condition monitoring methods. To solve this problem, this paper proposes an on-line temperature measurement system based on fiber Bragg grating (FBG) which can obtain the actual temperature of winding during transformer operation. The measurement system is consist of FBG temperature sensors that are embedded in specially designed magnet wire, and FBG demodulator. Performance of those sensors was tested in the laboratory, the sensitivity and linearity of those sensors was analyzed. Finally, a prototype of transformer coil with FBG temperature sensors was built and simulation experiment was processed. Temperature variation was monitored during the experiment and temperature distribution in transformer coils was achieved. The experiment results prove the reliability and feasibility of the proposed transformer temperature measurement system.

Citation Download Citation

Zao Cheng, Lin Cheng, Wei Li, Jianhua Zhou, Kecheng Yang, and Xiaohui Zhang "An on-line transformer windings temperature measurement system based on fiber Bragg grating", Proc. SPIE 8332, Photonics and Optoelectronics Meetings (POEM) 2011: Optoelectronic Sensing and Imaging, 83320H (17 February 2012); https://doi.org/10.1117/12.919019

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