CAJ | 학술논문

为得到雷电电磁脉冲对双绞线的耦合规律，基于软件CST仿真研究了双绞线长度、电场极化方向、终端负载对线缆终端响应电压的影响。结果表明，随着线缆长度的增加，双绞线受测端负载感应电压波形脉宽会增大，但感应电压幅值变化规律受辐射场波形频谱分布的影响；线缆受测端负载感应电压幅值随着线缆与电场方向的夹角的增大而变小，当电场与线缆垂直时，感应电压为0；随着终端负载阻值的增加，双绞线受测端负载感应电压也逐步增大，且增大趋势减缓。
위득도뇌전전자맥충대쌍교선적우합규률，기우연건CST방진연구료쌍교선장도、전장겁화방향、종단부재대선람종단향응전압적영향。결과표명，수착선람장도적증가，쌍교선수측단부재감응전압파형맥관회증대，단감응전압폭치변화규률수복사장파형빈보분포적영향；선람수측단부재감응전압폭치수착선람여전장방향적협각적증대이변소，당전장여선람수직시，감응전압위0；수착종단부재조치적증가，쌍교선수측단부재감응전압야축보증대，차증대추세감완。
In order to investigate the induced voltage of the load terminated between unshielded twisted pair (UTP) cou‐pled with lightning electromagnetic pulse(LEMP) ,we set up simulation modal by using electromagnetic software CST with different length ,angle of electric field to cable and terminal load .The results show that ,pulse width of UTP’s ter‐minal load induced voltage increases with cable length becomes large ,but the amplitude of induced voltage is mainly im‐pacted by frequency spectrum of radiation waveform ;with the angle between cable and electric field direction increasing , induced voltage decreases ,when it comes to verticality ,induced voltage almost become 0 ;with the termination increas‐ing ,induced voltage is gradually increased ,but trend to slowly .