Study on Simulation of Electromagnetic Interference of Flexible DC Converter Valve by Closing Operation of Switch

ZHAO Yuan; JI Yirun; LIU Yuan; PANG Lei; HU Yinghong; ZHANG Jinglan; ZHANG Qiaogen

doi:10.13296/j.1001-1609.hva.2022.01.017

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Study on Simulation of Electromagnetic Interference of Flexible DC Converter Valve by Closing Operation of Switch

更新时间：2025-04-26

- Study on Simulation of Electromagnetic Interference of Flexible DC Converter Valve by Closing Operation of Switch
- High VoltageApparatus Vol. 58, Issue 1, Pages: 130-137(2022)
- 作者机构：
  
  1. 国网冀北电力有限公司电力科学研究院
  2. 西安交通大学电气工程学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2022.01.017
  CLC： TM721.1
- Published：2022
- 稿件说明：
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ZHAO Yuan, JI Yirun, LIU Yuan, et al. Study on Simulation of Electromagnetic Interference of Flexible DC Converter Valve by Closing Operation of Switch[J]. High voltageapparatus, 2022, 58(1): 130-137.
DOI：

ZHAO Yuan, JI Yirun, LIU Yuan, et al. Study on Simulation of Electromagnetic Interference of Flexible DC Converter Valve by Closing Operation of Switch[J]. High voltageapparatus, 2022, 58(1): 130-137. DOI： 10.13296/j.1001-1609.hva.2022.01.017.

摘要

为探究刀闸拉合对柔性直流换流阀的电磁干扰特性

针对刀闸拉合对柔直换流阀辐射电磁干扰试验

通过分析电磁干扰原理

在CST仿真软件中建立了仿真模型。基于TLM场路耦合计算方法开展了仿真计算

得出了电磁干扰试验中阀塔内各位置的辐射电磁干扰水平

探究了阀塔内不同高度位置的电磁干扰强度和屏蔽罩对电磁干扰水平的影响。结果表明:阀塔内各位置辐射电磁干扰频谱的峰值基本出现在0.7 MHz附近;一般情况下

高度对低频电磁干扰水平有一定影响

对高频电磁干扰水平影响很小

不同位置处随着高度的增大电场强度幅值变化情况不一致;在阀塔内靠近屏蔽罩的位置

屏蔽罩的电磁干扰屏蔽作用明显

在阀塔内离屏蔽罩较远的位置

屏蔽罩的电磁干扰屏蔽作用有限。

Abstract

For exploring the electromagnetic interference characteristic of closing operation of switch to the flexible DC converter valve and as for radiation electromagnetic interference test of closing operation of switch to the flexible DC converter valve

the simulation model is set up in CST simulation software by analyzing the electromagnetic interference principle. The simulation calculation is carried out based on TLM field circuit coupling calculation method.The radiated EMI level of each position in the valve tower in the EMI test is obtained and the influence of electromagnetic interference intensity at different height the shield in valve tower to EMI level is explored. The results show that the peak of radiated EMI spectrum in each position of valve tower basically appears around 0.7 MHz;In general

the height has certain influence on the level of low-frequency EMI

but has little influence on the level of high-frequency EMI. With the increase of height

the variation of electric field intensity amplitude at different positions is inconsistent. The electromagnetic interference of shield is obvious in the positions close to the shield in the valve tower

but is limited at the positions far away from the shield in the valve tower.

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