接地线缆HEMP电流响应规律研究  

Study on Current Response of Grounding Cable in HEMP Environment

作　　者：柴焱杰[1] 张春光[2] 许凯[2] 赵煜[2] 

机构地区：[1]中国人民解放军96275部队 [2]中国电子科技集团公司第五十四研究所

出　　处：《无线电工程》2014年第10期52-54,58,共4页Radio Engineering

基　　金：国家部委基金资助项目

摘　　要：连接电子系统的线缆能够将电磁脉冲能量耦合至系统的内部电路,造成系统性能降级、损伤甚至烧毁,带来极大的危害,因此开展线缆的电磁脉冲效应研究工作是采取针对性电磁防护措施的必要前提。以高空核爆电磁脉冲(HEMP)为入射源,基于时域有限差分(FDTD)方法和Noda细线模型建立仿真空间和计算模型,分析计算了不同状态下接地线缆的HEMP电流响应。结果表明,接地线缆的响应电流在振荡过程中迅速衰减,且在较高位置处峰值较大;波源入射方向的改变会产生不同的响应结果,线缆响应电流主要来自与其布设方向一致的电场分量的激励。所得结论能够为线缆的电磁防护提供有益指导。The cable connecting the information systems may be coupled by the electromagnetic pulse energy to the internal cir-cuit,resulting in system performance degradation,damage and even burned,and bringing great harm. Therefore,the work to research cables’ effects under electromagnetic pulse is the precondition to take electromagnetic protective measures. The finite-difference time-domain （ FDTD） method and Noda thin models are used to establish the space and computational model with high-altitude nuclear elec-tromagnetic pulse （HEMP） as the incident source,the grounding cable HEMP current response in the different states is analyzed and calculated. The results show that the response current of grounding cable attenuates rapidly in the oscillation process with a large peak at a position higher;the incident direction changes of the wave source can produce different results in response,and the response current mainly appears from the cable laid in the same direction with the electric field excitation component. The conclusions can provide useful guidance for the cable electromagnetic protection.

关 键 词：接地线缆 高空核爆电磁脉冲 时域有限差分方法 电流响应 

分 类 号：TJ91[兵器科学与技术—武器系统与运用工程]