摘要
高空核爆电磁脉冲(HEMP)会引发埋地电缆的耦合作用,从而产生瞬态响应。针对HEMP下埋地电缆瞬态响应问题,首先分析了高空核爆电磁脉冲的时频特性;然后给出了电磁场与电缆耦合公式,明确了两者之间的耦合关系;最后基于电磁仿真软件Gprmax模拟了不同土壤成份、电缆埋深和辐射状态下的埋地电缆瞬态响应。仿真结果表明:利用Gprmax对高空核爆电磁脉冲下的埋地电缆瞬态响应进行分析是一种有效的方法,对高空核爆电磁脉冲的防护以及其他高功率电磁脉冲的电磁兼容问题分析具有参考意义。
High altitude nuclear electromagnetic pulse(HEMP)can be coupled with buried cables,resulting in transient response.Aiming at the transient response of buried cables under HEMP,the time-frequency characteristics of HEMP are analyzed.Then the coupling formula between the electromagnetic field and cable is given,and the coupling relationship between them is clarified.Finally,the transient response of buried cable under different soil composition,cable burial depth and radiation state is simulated based on the electromagnetic simulation software Gprmax.The results show that Gprmax is an effective method to analyze the transient response of buried cables under HEMP,and has reference significance for the protection of HEMP and the analysis of electromagnetic compatibility question of other high-power electromagnetic pulse.
作者
郭兴
张玉强
GUO Xing;ZHANG Yuqiang(School of Physics and Electronic Information,Yan’an University,Yan’an 716000,China)
出处
《延安大学学报（自然科学版）》
2024年第2期110-115,共6页
Journal of Yan'an University：Natural Science Edition
基金
国家自然科学基金项目(61961041)
陕西省自然科学基础研究计划项目(2019JM-363)。
关键词
高空核爆电磁脉冲
埋地电缆
耦合
Gprmax
瞬态响应
highaltitude nuclear electromagnetic pulse
buried cable
coupling
Gprmax
transient response
