Calculation of Transient Electromagnetic Fields from Overhead Lines Due to Switching in GIS

LIU Zhenhuan; LI Dongyun; ZHANG Jiangong; ZHAO Jun; XIE Pengkang; CHEN Henglin

doi:10.13296/j.1001-1609.hva.2016.06.015

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Calculation of Transient Electromagnetic Fields from Overhead Lines Due to Switching in GIS

更新时间：2025-04-26

- Calculation of Transient Electromagnetic Fields from Overhead Lines Due to Switching in GIS
- High VoltageApparatus Vol. 52, Issue 6, Pages: 91-97(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. 国网福建省电力有限公司电力科学研究院
  3. 浙江大学电气工程学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2016.06.015
  CLC： TM63
- Published：2016
- 稿件说明：
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[1]刘震寰,李冬云,张建功,赵军,谢鹏康,陈恒林.GIS变电站开关操作过程中架空线产生的暂态电磁场计算[J].高压电器,2016,52(06):91-97.

LIU Zhenhuan, LI Dongyun, ZHANG Jiangong, et al. Calculation of Transient Electromagnetic Fields from Overhead Lines Due to Switching in GIS[J]. High voltageapparatus, 2016, 52(6): 91-97.
[1]刘震寰,李冬云,张建功,赵军,谢鹏康,陈恒林.GIS变电站开关操作过程中架空线产生的暂态电磁场计算[J].高压电器,2016,52(06):91-97. DOI： 10.13296/j.1001-1609.hva.2016.06.015.

LIU Zhenhuan, LI Dongyun, ZHANG Jiangong, et al. Calculation of Transient Electromagnetic Fields from Overhead Lines Due to Switching in GIS[J]. High voltageapparatus, 2016, 52(6): 91-97. DOI： 10.13296/j.1001-1609.hva.2016.06.015.

摘要

随着电力系统的快速发展

气体绝缘变电站（GIS）广泛应用于高压电力系统中。GIS变电站中的开关操作会产生强烈的瞬态空间电磁场

进而威胁到变电站中电子设备的电磁兼容性（EMC）。文中计算了GIS变电站中架空线路在开关过程中产生的空间电磁场。利用数值拟合法得到了开关操作过程中的快速暂态过电流

采用时域有限差分法（FDTD）计算了架空线路产生的暂态空间电磁场

未对接地管壳和绝缘套管等电力设备建模;分析了空间暂态电磁场随距离、时间、频率变化的情况

计算结果可为GIS变电站的电磁兼容设计提供参考。

Abstract

Nowadays

with the fast development of power system

gas-insulated substation（GIS） has been widely used in high voltage power grids. Switching operations of disconnect switches radiate transient electromagnetic fields within GIS. As a result

the electromagnetic compatibility（EMC） problems of electronic equipments in GIS substations have to be considered. The electromagnetic（EM） fields generated by the transient currents through the overhead lines in a GIS are computed in this paper. The equation of the very fast transient currents（VFTC） generated during switching operation is obtained by numerical fitting

and a numerical model using a finite-difference time-domain（FDTD） technique is developed to compute the transient field emission considering the shielding effect of the grounded enclosure. The effects of EM field variations in different distances and frequencies are studied. The simulation results would give help to the EMC design of the electronic equipments in GIS.

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