CAJ | 학술논문

屏蔽电缆广泛应用于电力系统，而其极易遭受雷电电磁脉冲（Lightning Electromagnetic Pulse, LEMP）的干扰。其雷电电磁脉冲耦合是工程电磁防护的一个重要研究内容。采用三同轴时域测量方法实际测量了某型同轴电缆芯线的电磁脉冲响应，计算了屏蔽层转移阻抗；利用FDTD、Agrawal耦合模型和转移阻抗一阶近似模型分析了雷电通道近区架空屏蔽电缆芯线上的感应电压。根据分析结果讨论了雷电电磁脉冲分析中转移阻抗的近似描述方法。
병폐전람엄범응용우전력계통，이기겁역조수뇌전전자맥충（Lightning Electromagnetic Pulse, LEMP）적간우。기뇌전전자맥충우합시공정전자방호적일개중요연구내용。채용삼동축시역측량방법실제측량료모형동축전람심선적전자맥충향응，계산료병폐층전이조항；이용FDTD、Agrawal우합모형화전이조항일계근사모형분석료뇌전통도근구가공병폐전람심선상적감응전압。근거분석결과토론료뇌전전자맥충분석중전이조항적근사묘술방법。
Shielded cables are widely used in power systems, which make them easily be disturbed by lightning electromagnetic pulse (LEMP). The coupling of the lightning electromagnetic pulse with shielded cables is very important. In this paper, a triaxial time-domain method is employed to measure the EMP response of a coaxial cable core wire, and the transfer impedance is calculated. 2D-FDTD, Agrawal coupling model and the first approximation model are combined together to analyze the induced voltage of the aerial shielded cable core in the lightning channel near area. Based on the results, approximate description method of the transfer impedance in the analysis of the lightning electromagnetic pulse is discussed.