大地水平分层电导率对架空线缆HEMP响应的影响  

Impact of Horizontal Stratified Earth Conductivity on Overhead Cable HEMP Responses

作　　者：文刚 齐世举 姜勤波[1] 蔡星会[1] 

机构地区：[1]第二炮兵工程大学,西安710025

出　　处：《电工技术学报》2016年第1期91-95,共5页Transactions of China Electrotechnical Society

基　　金：总装备部预研基金资助项目(9140A11030113JB47148)

摘　　要：为研究真实地表附近架空线缆的高空核爆电磁脉冲(HEMP)响应,建立了两层土壤的大地简化模型,基于传输线模型推导了分层大地情况下线缆终端负载感应电流的计算公式,并与CST仿真结果进行对比,验证了计算结果的正确性。根据典型地表土壤的电导率分布规律,分析了上、下层土壤电导率及上层土壤厚度对负载感应电流的影响。结果表明电导率分层大地模型与电导率单一大地模型相比更贴近实际。To study the response of the overhead cable excited by the high-altitude electromagnetic pulse（ HEMP） near real ground,a simplified earth model with two soil layers is established. The calculation formula of the terminal load induced current is deduced in the situation of the stratified earth based on transmission line model,and its validity is verified by the comparison with the computer simulation technology（ CST） simulation result. According to the conductivity distribution law of the typical surface soil,the influences of the upper and lower soil＇s electrical conductivities and the upper soil ＇s thickness on the load induced current are analyzed. The results indicate that,comparing to the single conductivity earth model,the stratified conductivity earth model is more accurate.

关 键 词：水平分层电导率 高空核爆电磁脉冲 架空线缆 传输线模型 

分 类 号：TM15[电气工程—电工理论与新技术]