Electromagnetic Field Interaction with Transmission Lines

Farhad Rachidi is the head of the Electromagnetic Compatibility (EMC) Group of of the Swiss Federal Institute of Technology (EPFL). He received the M.S. degree in electrical engineering and the Ph.D. degree from the Swiss Federal Institute of Technology, Lausanne, in 1986 and 1991 respectively. He worked at the Power Systems Laboratory of the same institute until 1996. In 1997, he joined the Lightning Research Laboratory of the University of Toronto in Canada and from April 1998 until September 1999, he was with Montena EMC in Switzerland. He is currently 'Maitre d'Enseignement et de Recherche' and head of the EMC Group at the Swiss Federal Institute of Technology, Lausanne, Switzerland. His research interests concern electromagnetic compatibility, lightning electromagnetics and electromagnetic field interactions with transmission lines. He is the convener of the joint CIGRE-CIRED Working Group "Protection of MV and LV Networks against Lightning", the Chairman of the subcommittee Lightning of the Technical Committee TC5 of IEEE EMC Society, and a member of various IEEE, CIGRE and CIRED working groups dealing with lightning. He is member of the Executive Board of the International Conference on Lightning Protection and member of the Scientific Committees of various International Symposia in the field of Electromagnetic Compatibility. Farhad Rachidi is a Senior Member of IEEE, Vice-Chair of the European COST Action P18 'The Physics of Lightning Flash and its Effects', Associate Editor of the IEEE Transactions on Electromagnetic Compatibility, member of the Editorial Board of the Journal of Lightning Research, member of the Editorial Board of Book Series on Advances in Electrical and Electronic Engineering, Wessex Institute of Technology (WIT) Press, member of the Editorial Board of Book Series on Lightning and its Effects, Elsevier Press, and member of the Electromagnetics Academy. He has served as Keynote speaker, session chairman/moderator/organizer at various international conferences in the field of Electromagnetic Compatibility and Lightning. He served also as a guest co-editor for the Journal of Electroctatics (2004 and 2006) and special reporter for CIGRE (2004). In 2005, he was the recipient of the IEEE Technical Achievement Award for outstanding contributions to the understanding of lightning discharge and its electromagnetic effects. He was also awarded with the 2005 Technical Committee Award of the CIGRE (International Council on Large Electric Systems). In July 2006, he was elected to the grade of EMP Fellow for his contributions to the coupling of electromagnetic fields radiated by lightning. Farhad Rachidi was awarded the 2006 Blondel Medal from the French Association of Electrical Engineering, Electronics, Information Technology and Communication (SEE). Farhad Rachidi is listed in Who's Who in Science and Engineering. He is the author or coauthor of over 200 scientific papers published in reviewed journals and presented at international conferences. Sergei Tkachenko is with the Institute for Fundamental Electrical Engineering and Electromagnetic Compatibility, at Otto-von-Guericke University, Magdeburg, Germany.

Chapter 1: Derivation of telegrapher's equations and field-to-transmission line interaction Transmission line approximation; Single-wire line above a perfectly conducting ground; Contribution of the different electromagnetic field components; Inclusion of losses; Case of multiconductor lines; Time-domain representation of the coupling equations; Frequency-domain solutions; Time-domain solutions; Conclusions Chapter 2: Surge propagation and crosstalk in multiconductor transmission lines above ground Introduction; Telegrapher's or transmission line equations for MTL systems; Time domain numerical solutions for transmission line equations; Crosstalk in MTL systems; Concluding remarks Chapter 3: Surge propagation in multiconductor transmission lines below ground Introduction; Telegrapher's or transmission line equations for the buried wires; Possible limits of transmission line approximation for buried wires; Coupling to cable core through cable shields; Some additional cases of ground impedance based on wire geometry; Some examples; Concluding remarks PART II: ENHANCED TRANSMISSION LINE THEORY Chapter 4: High-frequency electromagnetic coupling to transmission lines: electrodynamics correction to the TL approximation Introduction; High-frequency electromagnetic field coupling with a straight wire above a perfectly conducting ground; Propagation of high-frequency current waves through a line bend; Conclusion Chapter 5: High-frequency electromagnetic field coupling to long loaded non-uniform lines: an asymptotic approach Introduction; High-frequency electromagnetic field coupling to a long loaded line; Asymptotic approach for a non-uniform transmission line; Conclusion Chapter 6: Transmission line models for high-speed conventional interconnects and metallic carbon nanotube interconnects Introduction and historical background; General integral formulation and derivation of transmission line models; Transmission line model for conventional conductors; Transmission line model for CNT interconnects; Examples and applications; Conclusions Chapter 7: The electromagnetic field coupling to buried wires: frequency and time domain analysis Introduction; The frequency domain approach; Time domain approach