SPEEDY CALCULATION OF FREQUECNY-DEPENDENT IMPEDANCES OF UNDERGROUND POWER CABLES
作者单位：Electrical Engineering DepartmentTsinghua University
会议名称：《2002 3rd International Symposium on Electromagnetic Compatibility》
主办单位：Chinese Institute of Electronics (CIE);CIE Committee for URSI;IEE Beijing Center;IEEE Beijing Section;URSI Commission E
会议日期：2002年
学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 080802[工学-电力系统及其自动化] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0701[理学-数学]
关 键 词：Electromagnetic compatibility
摘 要：正This paper describes a speedy method for calculation of frequency-dependent series impedances of the underground power cable in a *** impedances are needed for the analysis of electromagnetic transients and EMC in power systems. A technique based on the fictitious medium concept is used to calculate the magnetic vector potential exactly at several single frequencies in the tunnel,which reduces the solution region inside the poorly conducting *** frequency characteristic of power cable is obtained by a very powerful extrapolating approach,*** *** extrapolating results are compared with those from the frequency point-by-point matching *** method is very time saving because only the low rank frequency derivative information of the power cable impedance is required.