Computation of Transient Electromagnetic Field Emission from Enclosure During GIS Disconnector Switching Operations

GAN Zheyuan; ZHAO Jun; ZHANG Jiangong; XIE Pengkang; CHEN Henglin

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Computation of Transient Electromagnetic Field Emission from Enclosure During GIS Disconnector Switching Operations

更新时间：2025-12-08

- Computation of Transient Electromagnetic Field Emission from Enclosure During GIS Disconnector Switching Operations
- Vol. 42, Issue 3, Pages: 980-986(2016)
- 作者机构：
  
  1. 中国电力科学研究院武汉分院电网环境保护国家重点实验室
  2. 浙江大学电气工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：31 March 2016，
  
  Published：2016
- 稿件说明：
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GAN Zheyuan, ZHAO Jun, ZHANG Jiangong, et al. Computation of Transient Electromagnetic Field Emission from Enclosure During GIS Disconnector Switching Operations[J]. 2016, 42(3): 980-986.
DOI：

GAN Zheyuan, ZHAO Jun, ZHANG Jiangong, et al. Computation of Transient Electromagnetic Field Emission from Enclosure During GIS Disconnector Switching Operations[J]. 2016, 42(3): 980-986. DOI：

摘要

随着电力系统的不断发展

越来越多的电子设备引入到变电站中

而气体绝缘开关设备（gas insulated switchgear

GIS）中的隔离开关操作往往作会造成空间暂态电磁辐射

分析隔离开关操作过程中GIS管壳周围空间电磁场分布对安装在管壳周围的电子设备的电磁兼容设计有着非常重要的参考意义。建立了GIS管壳的电路和电磁辐射模型

计算得到了GIS隔离开关操作过程中管壳接地电流引起的空间暂态电磁场。结果表明:管壳周围电磁场时域波形跟随管壳电流变化;管壳附近的空间电磁场随着与管壳之间距离增加而剧烈衰减

在离管壳较远的位置

电场呈线性衰减

磁场呈指数衰减;随着接地点个数增加

暂态对地过电压的幅值显著降低

且离套管位置较远处电磁场幅值有所减小。对GIS管壳附近的空间电磁场进行了测量

计算结果与现场实测数据基本相符。

Abstract

With the fast development of power system

intelligent equipment is increasingly applied in substations. Disconnector operation in gas insulated switchgear（GIS） always produces electromagnetic field emissions. Therefore

it has very important reference significance to analyze the electromagnetic field distribution for the electromagnetic compatibility design of the electronic equipment installed around the GIS enclosures. We established the circuit models of grounding enclosure and electromagnetic emission

and calculated the electromagnetic field caused by the enclosure current during switching operation. The results show that the electromagnetic field waveform follows the enclosure current waveform. Near the enclosure

the electromagnetic field decays fast

far from the enclosure

electric field decays linearly while magnetic field decays exponentially. With the number increasing of grounding points

the amplitude of TEV decreases obviously

and the electromagnetic field are smaller far from the bushing. The electromagnetic field near grounding enclosure is measured

and the measured results basically coincide with the calculation results.

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