Abstract:In order to improve the traditional methods for solving field-line coupling problem of shielded cables, a hybrid method is studied, which combines the FDTD method for electromagnetic field and the transmission line theory. The coupling module is divided into two systems: inner system and outer system, respectively solved by field method and circuit method. The lossy soil and grounding methods of the shield are considered when solving the outer system. For the inner system, the FDTD method is used to obtain the time-domain solution of transmission line equation. By this method, current induced by EMP in near ground coaxial cable is analyzed. Compared with experimental data, the simulation results demonstrate the method to be correct.
张刚, 王立欣, 刘超. 一种求解屏蔽电缆场线耦合问题的混合方法[J]. 电工技术学报, 2010, 25(5): 9-13.
Zhang Gang, Wang Lixin, Liu Chao. A Hybrid Method for Solving Field-Line Coupling Problem of Shielded Cables. Transactions of China Electrotechnical Society, 2010, 25(5): 9-13.
[1] Paul C R. Analysis of multiconductor transmission lines. New York: John willy & Sons, 1994. [2] Paul C R. A brief history of work in transmission lines for EMC applications[J]. IEEE Trans. on EMC, 2007, 49(2): 237-252. [3] Holland R, Simpson L. Finite-difference analysis of EMP coupling to thin struts and wires[J]. IEEE Trans. on EMC, 1981, 23(2): 88-97. [4] Berenger J P. A multiwire formalism for the FDTD method[J]. IEEE Trans. on EMC, 2000, 42(3): 257-264. [5] Chen B, Chen H L, Gao C, et al. Study on the HEMP induced current in the two-wire line with the metal shielded bushing[M]. The Third Asia-Pacific Conference on Environmental Electromagnetics Proceedings, Hangzhou, 2003, 255-259. [6] Feliziani M, Maradei F. Full-wave analysis of shielded cable configurations by the FDTD method[J]. IEEE Trans. On Magn., 2002, 38(2): 761-764. [7] Gedney S D. An anisotropic perfectly matched layer absorbing media for the truncation of FDTD lattices[J]. IEEE Trans. on Antennas and Propagation, 1996, 44 (12): 1630 -1639. [8] 周启明, 罗学金. 架空线和地面电缆的HEMP耦合模拟试验[C]. 全国电磁兼容专题学术研讨会论文集, 2000: 60-67. [9] Vance E F. Coupling to shielded cables[M]. New York: John Wiley & Sons Press, 1978. [10] Michel A, Mircea I, Lin C C. Transient electro- magnetic field coupling to long shielded cables[J]. IEEE Trans. on Electromagnetic Compatibility, 1980, 22(4): 276-282. [11] 葛德彪, 阎玉波. 电磁波时域有限差分方法[M]. 西安:西安电子科技大学出版社, 2002.