Analysis on Influence of Parameters of Electromagnetic Potential Transformer on Ferromagnetic Resonance

CHEN Xi; CHEN Li’an

doi:10.13296/j.1001-1609.hva.2025.08.017

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Analysis on Influence of Parameters of Electromagnetic Potential Transformer on Ferromagnetic Resonance

Research & Analysis | 更新时间：2025-08-08

- Analysis on Influence of Parameters of Electromagnetic Potential Transformer on Ferromagnetic Resonance
- High Voltage Apparatus Vol. 61, Issue 8, Pages: 128-138(2025)
- 作者机构：
  
  1.厦门理工学院电气工程与自动化学院，福建　厦门　361024
  2.厦门市高端电力装备及智能控制重点实验室，福建　厦门　361024
- 作者简介：
- 基金信息：
  
  Natural Science Foundation of Fujian Province(2023J011443)
- DOI：10.13296/j.1001-1609.hva.2025.08.017
  CLC：
- Received：02 January 2025，
  
  Revised：06 April 2025，
  
  Published：16 August 2025
- 稿件说明：
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CHEN Xi, CHEN Li’an. Analysis on Influence of Parameters of Electromagnetic Potential Transformer on Ferromagnetic Resonance[J]. High voltage apparatus, 2025, 61(8): 128-138.
DOI：

CHEN Xi, CHEN Li’an. Analysis on Influence of Parameters of Electromagnetic Potential Transformer on Ferromagnetic Resonance[J]. High voltage apparatus, 2025, 61(8): 128-138. DOI： 10.13296/j.1001-1609.hva.2025.08.017.

摘要

电力系统中因电磁式电压互感器（potential transformer，PT）饱和引起的铁磁谐振故障频繁发生。为了准确表征电磁式PT本体参数对铁磁谐振的作用情况，亟需对PT各因素的影响程度进行量化分析。文中首先介绍了电磁式PT铁磁谐振的产生机理和主要影响因素，并对PT等效模型和参数进行分析；其次，在ATP-EMTP中构建铁磁谐振仿真模型，并借助真型试验验证模型的可行性；最后分别对各参数的作用情况进行仿真，并通过试验设计法（design of experiment，DOE）量化分析电磁式PT本体参数对铁磁谐振过电压的影响程度，确定关键影响因素。结果表明，在分频和基频谐振情况下，PT励磁特性和绕组漏感对谐振过电压的影响程度最大，而当系统发生高频谐振时，杂散电容占据主要影响作用。该分析结果将为预防和治理配电网铁磁谐振提供重要的参考依据。

Abstract

The ferromagnetic resonance due to saturation of electromagnetic potential transformer (PT) occurs frequently in power systems. For accurately characterizing the effect of the parameters of electromagnetic PT on the ferromagnetic resonance

it is urgent to quantitatively analyze the influence degree of each parameter of the PT. In this paper

the generation mechanism and main influencing factors of ferromagnetic resonance of the electromagnetic PT were introduced firstly

and the equivalent model and parameters of the PT were analyzed. Then

the ferromagnetic resonance simulation model was constructed in ATP-EMTP and the feasibility of the model was verified by full-scale test. Finally

the effects of each parameter were simulated respectivel

and the influece extent of electromagnetic PT noumenal parameters on ferromagnetic resonance overvoltage was quantitatively analyzed through the design of experiment (DOE) so to determine the key influencing factors. The result shows that the PT excitation characteristics and winding leakage inductance have the greatest influence on the resonance overvoltage in the case of frequency division and fundamental frequency resonance. While

in the case of high frequency resonance in the system

the stray capacitance plays dominant role in exerting its influence. The analysis results will provide an important reference for the prevention and treatment of ferromagnetic resonance in distribution network

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