Analysis and Design of Anti-electromagnetic Interference Property for Integrated Merging Unit and Intelligent Terminal in Smart Substation

XU Liqing; CHEN Xinzhi; YU Huawu; XIE Kun; XU Feiyu

doi:10.13296/j.1001-1609.hva.2014.11.010

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Analysis and Design of Anti-electromagnetic Interference Property for Integrated Merging Unit and Intelligent Terminal in Smart Substation

更新时间：2025-04-26

- Analysis and Design of Anti-electromagnetic Interference Property for Integrated Merging Unit and Intelligent Terminal in Smart Substation
- High VoltageApparatus Vol. 50, Issue 11, Pages: 57-62(2014)
- 作者机构：
  
  南京国电南自电网自动化有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2014.11.010
  CLC： TM63;TM76
- Published：2014
- 稿件说明：
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[1]徐丽青,陈新之,余华武,谢坤,许飞宇.智能变电站合智一体装置的抗电磁干扰分析及设计[J].高压电器,2014,50(11):57-62.

XU Liqing, CHEN Xinzhi, YU Huawu, et al. Analysis and Design of Anti-electromagnetic Interference Property for Integrated Merging Unit and Intelligent Terminal in Smart Substation[J]. High voltageapparatus, 2014, 50(11): 57-62.
[1]徐丽青,陈新之,余华武,谢坤,许飞宇.智能变电站合智一体装置的抗电磁干扰分析及设计[J].高压电器,2014,50(11):57-62. DOI： 10.13296/j.1001-1609.hva.2014.11.010.

XU Liqing, CHEN Xinzhi, YU Huawu, et al. Analysis and Design of Anti-electromagnetic Interference Property for Integrated Merging Unit and Intelligent Terminal in Smart Substation[J]. High voltageapparatus, 2014, 50(11): 57-62. DOI： 10.13296/j.1001-1609.hva.2014.11.010.

摘要

针对合智一体装置在电磁兼容试验中出现的若干问题

重点分析了电快速瞬变脉冲群、浪涌、静电放电等瞬态脉冲的特点。提出一种用于合智一体装置的抗电磁干扰措施

采用电容、磁珠、瞬态抑制二极管改进交流滤波回路、开关量输出回路、LED滤波回路

对干扰信号进行抑制。通过优化PCB布局布线

加强接地措施

减少各回路间相互耦合。试验结果证明

笔者总结出的合智一体装置硬件系统设计中采取的抑制电磁干扰的措施能有效地提高装置的抗电磁干扰能力。

Abstract

To solve the problems in EMC（electromagnetic compatibility）test of IMUIT（integrated merging unit and intelligent terminal）equipment

the authors analyze the characteristics of the fast transient impulses

such as electrical fast transient/burst（EFT/B）

surge

and electro-static discharge（ESD）

and propose the following antiinterference methods to enhance EMC for IMUIT equipment. The AC filter circuit

digital output filter circuit

and LED filter circuit are modified with capacitors

magnetic bead or transient voltage suppressor（TVS）to enhance the interference suppression. The inter-coupling among different circuits can be reduced by optimizing the wiring and layout of PCB and keeping reliable grounding. Test results show that the proposed methods for suppressing electromagnetic interference in the hardware system design of IMUIT equipment are effective.

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