Equivalent Circuit Model of Electromagnetic Interference on Shielding Enclosures for Secondary Equipments in Substation

ZHENG Chun-xu; LI Yong-ming; YANG Na; WANG Quan-di; HUANG Hong-pei

doi:10.13296/j.1001-1609.hva.2011.11.006

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Equivalent Circuit Model of Electromagnetic Interference on Shielding Enclosures for Secondary Equipments in Substation

更新时间：2025-04-26

- Equivalent Circuit Model of Electromagnetic Interference on Shielding Enclosures for Secondary Equipments in Substation
- High VoltageApparatus Vol. 47, Issue 11, Pages: 56-60(2011)
- 作者机构：
  
  重庆大学输配电装备及系统安全与新技术国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2011.11.006
  CLC： TM13;TM63
- Published：2011
- 稿件说明：
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[1]郑春旭,李永明,杨娜,汪泉弟,黄宏佩.变电站二次设备电磁干扰的等效电路模型分析[J].高压电器,2011,47(11):56-60.

ZHENG Chun-xu, LI Yong-ming, YANG Na, et al. Equivalent Circuit Model of Electromagnetic Interference on Shielding Enclosures for Secondary Equipments in Substation[J]. High voltageapparatus, 2011, 47(11): 56-60.
[1]郑春旭,李永明,杨娜,汪泉弟,黄宏佩.变电站二次设备电磁干扰的等效电路模型分析[J].高压电器,2011,47(11):56-60. DOI： 10.13296/j.1001-1609.hva.2011.11.006.

ZHENG Chun-xu, LI Yong-ming, YANG Na, et al. Equivalent Circuit Model of Electromagnetic Interference on Shielding Enclosures for Secondary Equipments in Substation[J]. High voltageapparatus, 2011, 47(11): 56-60. DOI： 10.13296/j.1001-1609.hva.2011.11.006.

摘要

基于传输线理论

介绍了一种电磁耦合等效电路模型

可用来分析外界电磁场照射下

有导线贯通的金属机箱其内部电路上的耦合干扰电压。分析了不同长度的贯通导线和不同强度的干扰电场对受害导线的影响。结果表明:穿出屏蔽机箱的导线越长

机箱内受害导线的干扰电压越大

并且在谐振频率处干扰电压产生峰值;受害导线的干扰电压随着干扰电磁场频率和强度的增大而增大。

Abstract

Based on the transmission line theory

the equivalent circuit model for electromagnetic coupling was used to simulate an electromagnetic induced voltage on the victim wire segment inside a shielding box penetrated by a wire with an aperture.The results show that the longer the wire outside shielding box

the greater the interference voltage on the victim wire and the peak interference voltage generated on the resonant frequency;Interference voltage on the victim wire rises with the electric field increases.

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