非均匀土壤中埋地电缆 HEMP 响应研究

摘要

为进一步研究埋地电缆在高空核爆电磁脉冲（ HEMP）辐照下的电磁瞬态响应，采用了电特性更接近实际情况的双层大地土壤模型，基于传输线方程计算了在HEMP平面波垂直入射下，分层大地土壤中埋地电缆的端接负载响应。分析了电导率分层结构、上层土壤厚度及埋地深度等因素对电缆端接负载感应电流的影响。该研究结果可供EMC设计时参考。%For the further study of buried cables′electromagnetic transient response excited by the high -alti-tude electromagnetic pulse (HEMP), the earth is divided into two levels with different electromagnetic proper-ties.The terminal load response of the buried cables in stratified earth irradiated by HEMP plane wave vertical -ly is calculated based on the transmission line equations , and some factors influencing the terminal load induced current , such as the stratified conductivity , the thickness of the upper soil , and the buried depth were ana-lyzed .The results can be a guideline for the empirical EMC design .