电气线路互联系统线缆抗高空核电磁脉冲耦合效应

Coupling effect of high altitude nuclear electromagnetic pulse of electrical wiring interconnection system cable

高空核电磁脉冲(HEMP)对电子设备的耦合途径主要有两方面:一方面是通过装备(产品)上的天线耦合通道进入到电子系统内的"前门耦合"方式;另一方面则是"后门耦合",即通过装备(产品)上的壳体、电源线、电缆、机箱的缝隙、孔洞等途径进行耦合。主要研究电气线路互联系统(EWIS)线缆抗高空核电磁脉冲耦合效应,通过研究HEMP干扰的特征、能量分布,搭建HEMP数学模型,采用控制变量法,改变EWIS线缆类型、离地高度等要素,通过在CST上建立仿真模型以及开展试验,分析HEMP对电子设备造成的影响程度,得到HEMP耦合效应的一般性结论与规律。

There are two main ways to couple high altitude nuclear electromagnetic pulse(HEMP)impact on electronic equipment.On the one hand,it is the“front door coupling”mode that the electromagnetic interference enters the electronic system through the antenna coupling channel on the equipment(product);and on the other hand,it is the“back door coupling”,that is,the coupling is carried out through the gaps and holes of the shell,power cord,cable and chassis on the equipment(product).In this paper,the coupling effect of electrical wiring interconnection system(EWIS)harnessing assembly against high altitude nuclear electromagnetic impact is mainly studied.By studying the characteristics and energy distribution of HEMP interference,the mathematical model of HEMP is established,the coupling effect is simulated by CST software,and tests is carried out at the same time,then the general conclusions and laws of HEMP coupling effect are obtained by synthesizing the simulation results.