10 kV配电网电磁式电压互感器谐振特性及识别方法的研究

李志彪; 宋建成; 程胤璋; 郑俊琪

doi:10.13296/j.1001-1609.hva.2026.06.016

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10 kV配电网电磁式电压互感器谐振特性及识别方法的研究

研究与分析 | 更新时间：2026-06-10

- 10 kV配电网电磁式电压互感器谐振特性及识别方法的研究
- Research on Resonance Characteristics and Identification Method of Electromagnetic Potential Transformer in 10 kV Distribution Network
- 高压电器 2026年62卷第6期页码：130-137
- 作者机构：
  
  太原理工大学矿用智能电器技术国家地方联合工程实验室，太原 030024
  太原理工大学煤矿电气设备与智能控制山西省重点实验室，太原 030024
  国网山西省电力公司电力科学研究院，太原 030001
  国网山西省电力公司，太原 030021
- 作者简介：
  
  李志彪（1997—），男，硕士，主要研究方向为电力系统自动化（通信作者）（E-mail：lizhibiao@nwepdi.com）。
  宋建成（1957—），男，教授，主要研究方向为高压绝缘、电气传动等（E-mail：sjc6018@163.com）。
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.06.016
  中图分类号：
- 收稿：2025-10-09，
  
  修回：2025-12-27，
  
  纸质出版：2026-06-16
- 稿件说明：
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李志彪, 宋建成, 程胤璋, 等. 10 kV配电网电磁式电压互感器谐振特性及识别方法的研究[J]. 高压电器, 2026,62(6):130-137.

LI Zhibiao, SONG Jiancheng, CHENG Yinzhang, et al. Research on Resonance Characteristics and Identification Method of Electromagnetic Potential Transformer in 10 kV Distribution Network[J]. High Voltage Apparatus, 2026, 62(6): 130-137.
李志彪, 宋建成, 程胤璋, 等. 10 kV配电网电磁式电压互感器谐振特性及识别方法的研究[J]. 高压电器, 2026,62(6):130-137. DOI： 10.13296/j.1001-1609.hva.2026.06.016.

LI Zhibiao, SONG Jiancheng, CHENG Yinzhang, et al. Research on Resonance Characteristics and Identification Method of Electromagnetic Potential Transformer in 10 kV Distribution Network[J]. High Voltage Apparatus, 2026, 62(6): 130-137. DOI： 10.13296/j.1001-1609.hva.2026.06.016.

摘要

在小电流接地系统中，当发生不正常运行状态时，配电线路的分布电容会与电压互感器（potential transformer，PT）一次侧的绕组电感发生谐振，从而产生谐振过电压，严重时会烧毁PT，甚至发生爆炸，严重威胁人身和设备安全。文中以山西某110 kV变电站10 kV配电网为研究对象，在PSCAD/EMTDC中建立了仿真模型，分析了线路分布电容（线路长度）、PT容量对谐振特性的影响规律，对于不同类型的谐振提出了VMD-HHT-WOA-SVM识别算法。研究发现，线路长度及PT容量的大小对配电网铁磁谐振均有影响，在实际工况中，由于线路参数与PT励磁特性的影响，高频谐振基本不会发生；基于VMD-HHT-WOA-SVM的PT谐振类别识别方法准确率可达95%，能有效地识别谐振类型与谐振发生时刻。

Abstract

In small current grounding system

in case of abnormal operating status

the resonance can be occurred between the distributed capacitance of the distribution line and the winding inductance on the primary side of the potential transformer (PT)

resulting in resonant overvoltage and

in case of serious cases

burning of PT

explosion and seriously threatening the safety of personal and equipment. In this paper the 10 kV distribution network of a 110 kV substation in Shanxi Province is taken as the research object

the simulation model is set up in PSCAD/EMTDC

and the influence of line distribution capacitance (line length) and PT capacity on the resonance characteristics is analyzed

and aVMD-HHT-WOA-SVMidentification algorithm is proposed for different types of resonance. It is found by the research that both the length of the line and the maginitude of PT capacity have an impact on the ferromagnetic resonance of the distribution network. In actual operating conditions

due to the influence of line parameters and PT excitation charcateristics

high-frequency resonance rarely occurs.The accuracy rate of the PT resonance recognition method based onVMD-HHT-WOA-SVMcan be up to 95%

enabling effective identification of both the resonance type and the moment of its occurrence.

关键词

Keywords

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