上海交通大学学报

上海交通大学学报 >

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

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

新型电力系统与综合能源

基于电磁波时间反演的GIS局部放电定位研究

  • 李佳洋 ,
  • 赵九一 ,
  • 钱勇 ,
  • 李国玉 ,
  • 徐治仁 ,
  • 潘超 ,
  • 盛戈皞
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  • 1 上海交通大学 电气工程系, 上海 200240
    2 国网浙江省电力有限公司 杭州供电公司, 杭州 310016
    3 青岛地铁集团有限公司, 山东 青岛 266002
    4 复旦大学 信息科学与工程学院, 上海 200433
李佳洋(2001—),硕士生,从事GIS局部放电研究.
钱 勇,副教授;E-mail:qian_yong@sjtu.edu.cn.

收稿日期: 2024-01-29

  修回日期: 2024-05-24

  录用日期: 2024-11-28

  网络出版日期: 2024-12-13

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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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摘要

近年来,电磁波时间反演(EMTR)技术作为一种有效的定位方法在局部放电领域开始得到应用.相比传统的特高频(UHF)定位方法,EMTR技术仅需要单个传感器,具有巨大的优势和良好的应用前景,但目前常用的最大场强和最小熵准则很难精确得出复杂结构下时间反演的聚焦时刻和位置.根据信号源与非信号源处波形的不同特征,提出一种基于密度的带噪声应用空间聚类(DBSCAN)算法的EMTR定位方法,并采用CST Studio Suite仿真软件对气体绝缘封闭开关设备(GIS)中局部放电进行定位验证.为验证时间反演的现场可行性,搭建实验室模型并进行局部放电实验,结果表明EMTR方法的平均定位误差小于20 cm,能够实现GIS中局部放电源的准确定位,相较于传统方法减少了传感器数量,提高了抗干扰性能,具有一定的优越性.

关键词： 电磁波时间反演; 局部放电; 定位; 基于密度的聚类算法; 气体绝缘封闭开关设备

本文引用格式

李佳洋 , 赵九一 , 钱勇 , 李国玉 , 徐治仁 , 潘超 , 盛戈皞 . 基于电磁波时间反演的GIS局部放电定位研究[J]. 上海交通大学学报, 2025 , 59(12) : 1763 -1772 . DOI: 10.16183/j.cnki.jsjtu.2024.038

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)

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