强电磁脉冲环境下屏蔽接地方法研究  

Research on Shield Grounding Method in Strong Electromagnetic Pulse Environment

作　　者：唐荣 TANG Rong(Chengdu Siex Technology Co.,Ltd.,Chengdu 611731,China)

机构地区：[1]成都西艾克斯科技有限公司,四川成都611731

出　　处：《现代信息科技》2022年第24期46-49,共4页Modern Information Technology

摘　　要：针对复杂电磁环境下强电磁脉冲的毁伤效应,以高空核电磁脉冲(HEMP)为例,通过对电磁辐射屏蔽理论的介绍,分析HEMP的波形特征和频谱特性,研究HEMP效应下的屏蔽接地特性,得到了HEMP辐射环境下的屏蔽接地设计原则与方法。给出典型电磁屏蔽结构下的接地导体类型,分析传统搭接与接地方案在HEMP作用中的效应,提出能有效增加屏蔽效能和降低电磁损伤的搭接、接地改进方法,为电子电气设备抗强电磁脉冲防护加固提供了有效支撑。Aiming at the damage effect of strong electromagnetic pulse in complex electromagnetic environment, taking the highaltitude nuclear electromagnetic pulse(HEMP) as an example, through the introduction of electromagnetic radiation shielding theory,the waveform characteristics and spectrum characteristics of HEMP are analyzed, the shielded grounding characteristics under HEMP effect are studied, and the shielded grounding design principles and methods under HEMP radiation environment are obtained. The types of grounding conductors under typical electromagnetic shielding structures are given, the effects of traditional bonding and grounding schemes on HEMP are analyzed, and an improved bonding and grounding method that can effectively increase shielding effectiveness and reduce electromagnetic damage is proposed, which provides effective support for strengthening the protection of electronic and electrical equipment against strong electromagnetic pulse.

关 键 词：HEMP 屏蔽接地 辐射 感应电流 

分 类 号：TL76[核科学技术—辐射防护及环境保护]