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On the Feasibility of Gap Detection of Power Transformer Partial Discharge UHF Signals: Gap Propagation Characteristics of Electromagnetic Waves

Author

Listed:
  • Xiaoxing Zhang

    (School of Electrical Engineering, Wuhan University, Wuhan 430072, China)

  • Guozhi Zhang

    (School of Electrical Engineering, Wuhan University, Wuhan 430072, China)

  • Yalong Li

    (School of Electrical Engineering, Wuhan University, Wuhan 430072, China)

  • Jian Zhang

    (School of Electrical Engineering, Wuhan University, Wuhan 430072, China)

  • Rui Huang

    (Shandong Electric Power Research Institute, State Grid Shandong Electric Power Company, Jinan 250002, China)

Abstract

This study analyzed the transformer electromagnetic gap propagation characteristics. The influence of gap size is also analyzed, and the results experimentally verified. The obtained results indicated that the gap propagation characteristics of electromagnetic wave signals radiated by the partial discharge (PD) source in different directions are substantially different. The intensity of the electromagnetic wave in the gap reaches a maximum at a gap height of 1 cm; and inside the gap, the intensity of the electromagnetic wave depicted an increasing trend at the tail area of the gap. Finally, from the obtained results, some suggestions on where to install sensors in practical systems for ultra high frequency (UHF) PD signal detection in the transformer gap are provided. The obtained results confirmed the feasibility of using this approach. These results can be seen as a benchmark and a challenge for further research in this field.

Suggested Citation

  • Xiaoxing Zhang & Guozhi Zhang & Yalong Li & Jian Zhang & Rui Huang, 2017. "On the Feasibility of Gap Detection of Power Transformer Partial Discharge UHF Signals: Gap Propagation Characteristics of Electromagnetic Waves," Energies, MDPI, vol. 10(10), pages 1-16, October.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:10:p:1531-:d:113975
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    Citations

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    Cited by:

    1. Chunguang Suo & Jingjing Zhao & Lifeng Wang & Zhipeng Xu & Ruikang Luo & Mingxing He & Wenbin Zhang, 2023. "Research on Near-Field Propagation Characteristics of Partial Discharge Electromagnetic Wave Signal in Switchgear," Energies, MDPI, vol. 16(8), pages 1-19, April.
    2. 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.
    3. Marek Florkowski, 2018. "Observations of Partial Discharge Echo in Dielectric Void by Applying a Voltage Chopped Sequence," Energies, MDPI, vol. 11(10), pages 1-15, September.
    4. Jun Jiang & Mingxin Zhao & Chaohai Zhang & Min Chen & Haojun Liu & Ricardo Albarracín, 2018. "Partial Discharge Analysis in High-Frequency Transformer Based on High-Frequency Current Transducer," Energies, MDPI, vol. 11(8), pages 1-13, August.

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