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Proceedings Paper

An on-line transformer windings temperature measurement system based on fiber Bragg grating
Author(s): Zao Cheng; Lin Cheng; Wei Li; Jianhua Zhou; Kecheng Yang; Xiaohui Zhang
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Paper 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.

Paper Details

Date Published: 17 February 2012
PDF: 4 pages
Proc. SPIE 8332, Photonics and Optoelectronics Meetings (POEM) 2011: Optoelectronic Sensing and Imaging, 83320H (17 February 2012); doi: 10.1117/12.919019
Show Author Affiliations
Zao Cheng, Huazhong Univ. of Science and Technology (China)
Lin Cheng, Wuhan NARI Limited Liability Company of State Grid Electric Power Research Institute (China)
Huazhong Univ. of Science and Technology (China)
Wei Li, Huazhong Univ. of Science and Technology (China)
Jianhua Zhou, Wuhan NARI Limited Liability Company of State Grid Electric Power Research Institute (China)
Kecheng Yang, Huazhong Univ. of Science and Technology (China)
Xiaohui Zhang, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 8332:
Photonics and Optoelectronics Meetings (POEM) 2011: Optoelectronic Sensing and Imaging
Pierre Galarneau; Xu Liu; Pengcheng Li, Editor(s)

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