摘要
为了研究屏蔽电缆受外界电磁脉冲作用可能产生的非线性效应,提出了屏蔽电缆表面转移阻抗的大电流注入测试方法.建立了大电流注入测试系统,通过注入测试方法获得了不同电流等级下电缆转移阻抗曲线,对比了两类屏蔽多芯电缆的芯线电磁脉冲耦合情况.实验表明:加入一层铁磁性屏蔽层的多芯电缆在注入电流峰值超过2kA时,芯线耦合电压会呈现非线性效应.并分析了该现象产生的原因.
In order to study the nonlinear effect of shielded cables caused by radiation coupling of electromagnetic pulse(EMP),a measurement method for the surface transfer impedance under bulk current injection is proposed.The measurement system is built,then the transfer impedance is measured by injecting currents of different amplitudes,and the internal wire responses of two kinds of shielded cables are observed.The experiment shows that when the injected peak current value exceeds 2kA,the coupling voltage nonlinear effect occurs in the multi-conductor cable which contains a ferromagnetic shield layer.The explanation of this phenomenon is also analyzed.
出处
《电波科学学报》
EI
CSCD
北大核心
2014年第3期515-520,共6页
Chinese Journal of Radio Science
基金
国家自然科学基金(No.51077133)
