Journal of Shanghai Jiao Tong University

Journal of Shanghai Jiaotong University >

2025 , Vol. 59 >Issue 12: 1763 - 1772

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2024.038

New Type Power System and the Integrated Energy

Location of Partial Discharge in GIS Based on Electromagnetic Wave Time Reversal

  • LI Jiayang ,
  • ZHAO Jiuyi ,
  • QIAN Yong ,
  • LI Guoyu ,
  • XU Zhiren ,
  • PAN Chao ,
  • SHENG Gehao
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  • 1 Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
    2 Hangzhou Power Supply Company, State Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310016, China
    3 Qingdao Metro Group Co., Ltd., Qingdao 266002, Shandong, China
    4 School of Information Science and Technology, Fudan University, Shanghai 200433, China

Received date: 2024-01-29

  Revised date: 2024-05-24

  Accepted date: 2024-11-28

  Online published: 2024-12-13

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Abstract

In recent years, as an effective positioning method, electromagnetic wave time reversal (EMTR) technology has begun to be applied in the field of partial discharge. Compared with traditional ultra high frequency (UHF) positioning methods, EMTR technology requires only a single sensor, offering significant advantages and promising application prospects. However, the commonly used maximum field strength and minimum entropy criteria struggle to accurately determine the focusing time and position of time reversal in complex structures. To address these problems, this paper proposes an EMTR location method based on the density-based spatial clustering of applications with noise (DBSCAN) algorithm leveraging the distinct characteristics of waveforms at signal and non-signal sources, and verify the location of partial discharges in gas-insulated switchgear (GIS) using CST Studio Suite simulation software. To verify the field feasibility of EMTR, it develops a laboratory model to conduct partial discharge experiments. The results show that the average positioning error of the EMTR method is less than 20 cm, which can realize accurate positioning of partial discharge sources in GIS. Compared with traditional methods, the EMTR method reduces the number of sensors and improves the anti-interference performance, which has certain advantages.

Key words： electromagnetic wave time reversal (EMTR); partial discharge (PD); location; density-based spatial clustering of applications with noise (DBSCAN) algorithm; gas insulated switchgear (GIS)

Cite this article

LI Jiayang , ZHAO Jiuyi , QIAN Yong , LI Guoyu , XU Zhiren , PAN Chao , SHENG Gehao . Location of Partial Discharge in GIS Based on Electromagnetic Wave Time Reversal[J]. Journal of Shanghai Jiaotong University, 2025 , 59(12) : 1763 -1772 . DOI: 10.16183/j.cnki.jsjtu.2024.038

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