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A π-Phase-Shifted Fiber Bragg Grating Partial Discharge Sensor toward Power Transformers

Author

Listed:
  • Tian Tian

    (State Grid Ningxia Electric Power Co., Ltd., Electric Power Research Institute, Yinchuan 750011, China)

  • Xiu Zhou

    (State Grid Ningxia Electric Power Co., Ltd., Electric Power Research Institute, Yinchuan 750011, China)

  • Sihan Wang

    (State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China)

  • Yan Luo

    (State Grid Ningxia Electric Power Co., Ltd., Electric Power Research Institute, Yinchuan 750011, China)

  • Xiuguang Li

    (State Grid Ningxia Electric Power Co., Ltd., Electric Power Research Institute, Yinchuan 750011, China)

  • Ninghui He

    (State Grid Ningxia Electric Power Co., Ltd., Electric Power Research Institute, Yinchuan 750011, China)

  • Yunlong Ma

    (State Grid Ningxia Electric Power Co., Ltd., Electric Power Research Institute, Yinchuan 750011, China)

  • Weifeng Liu

    (State Grid Ningxia Electric Power Co., Ltd., Electric Power Research Institute, Yinchuan 750011, China)

  • Rongbin Shi

    (State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China)

  • Guoming Ma

    (State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China)

Abstract

Partial discharge (PD) ultrasonic detection is an early sign of the insolation defects of power transformers. The early diagnosis of PD requires the high sensitivity and reliability of ultrasonic sensing systems. For this purpose, a reformative PD ultrasonic sensing system based on phase-shifted FBG (PS-FBG) was demonstrated. By using PS-FBG as the ultrasonic sensing unit, the ultrasonic sensing system improved the response to the ultrasonic signal and overcame the electromagnetic noise. To compensate for the influence of temperature change on the ultrasonic sensing system, an automatic wavelength scanning demodulating method was carried out. The wavelength spanning strategy was optimized based on the principle of cross-correlation, in order to quicken the spanning. A PD detection test in the transformer oil was conducted, and the result shows that PS-FBG was 17.5 times more sensitive than PZT. Because of the better ultrasonic response, the proposed system was able to achieve the early diagnosis of insolation faults in a power transformer.

Suggested Citation

  • Tian Tian & Xiu Zhou & Sihan Wang & Yan Luo & Xiuguang Li & Ninghui He & Yunlong Ma & Weifeng Liu & Rongbin Shi & Guoming Ma, 2022. "A π-Phase-Shifted Fiber Bragg Grating Partial Discharge Sensor toward Power Transformers," Energies, MDPI, vol. 15(16), pages 1-9, August.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:16:p:5849-:d:886220
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    References listed on IDEAS

    as
    1. Janvier Sylvestre N’cho & Issouf Fofana, 2020. "Review of Fiber Optic Diagnostic Techniques for Power Transformers," Energies, MDPI, vol. 13(7), pages 1-24, April.
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