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Application of Acoustic Emission and Thermal Imaging to Test Oil Power Transformers

Author

Listed:
  • Franciszek Witos

    (Department of Optoelectronics, Faculty of Electrical Engineering, Silesian University of Technology, 44-100 Gliwice, Poland)

  • Aneta Olszewska

    (Department of Optoelectronics, Faculty of Electrical Engineering, Silesian University of Technology, 44-100 Gliwice, Poland)

  • Zbigniew Opilski

    (Department of Optoelectronics, Faculty of Electrical Engineering, Silesian University of Technology, 44-100 Gliwice, Poland)

  • Agnieszka Lisowska-Lis

    (Department of Electronics and Telecommunications, University of Applied Sciences in Tarnow, 33-100 Tarnow, Poland)

  • Grzegorz Szerszeń

    (Department of Electronics and Telecommunications, University of Applied Sciences in Tarnow, 33-100 Tarnow, Poland)

Abstract

In this paper, the research methodology and the results of the analysis carried out using the acoustic emission (AE) and thermal imaging for a selected oil power transformer are presented. The basis for the research, by means of the AE method, was the author’s patented research method. The AE descriptor maps on the side walls of the tested transformer along with the location of areas with increased AE activity and an analysis of the properties of AE signals recorded at the measurement points located in these areas have been performed. The results showed no partial discharges that could threaten further operation of the tested transformer as well as three areas where increased magnetoacoustic emission occurred. Thermal imaging studies were carried out in the 7.5 μm < λ < 13 μm band. Three areas were located on the calculated thermograms: the entire upper surface of the transformer tank and two areas on the side walls of the tested transformer in which increased IR radiation occurred. The results of the analysis of the research results for the two methods correspond with each other, having a common part, and complement each other giving a broader description of studied phenomena.

Suggested Citation

  • Franciszek Witos & Aneta Olszewska & Zbigniew Opilski & Agnieszka Lisowska-Lis & Grzegorz Szerszeń, 2020. "Application of Acoustic Emission and Thermal Imaging to Test Oil Power Transformers," Energies, MDPI, vol. 13(22), pages 1-20, November.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:22:p:5955-:d:445242
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    References listed on IDEAS

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    1. Wojciech Sikorski & Krzysztof Walczak & Wieslaw Gil & Cyprian Szymczak, 2020. "On-Line Partial Discharge Monitoring System for Power Transformers Based on the Simultaneous Detection of High Frequency, Ultra-High Frequency, and Acoustic Emission Signals," Energies, MDPI, vol. 13(12), pages 1-37, June.
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    Cited by:

    1. Wenrong Si & Weiqiang Yao & Hong Guan & Chenzhao Fu & Yiting Yu & Shiwei Su & Jian Yang, 2021. "Numerical Study of Vibration Characteristics for Sensor Membrane in Transformer Oil," Energies, MDPI, vol. 14(6), pages 1-18, March.
    2. Marco Bindi & Maria Cristina Piccirilli & Antonio Luchetta & Francesco Grasso, 2023. "A Comprehensive Review of Fault Diagnosis and Prognosis Techniques in High Voltage and Medium Voltage Electrical Power Lines," Energies, MDPI, vol. 16(21), pages 1-37, October.
    3. Franciszek Witos & Aneta Olszewska, 2023. "Investigation of Partial Discharges within Power Oil Transformers by Acoustic Emission," Energies, MDPI, vol. 16(9), pages 1-20, April.

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