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Transient Behavior of a System Composed of Conductive Thin Wire Structures Excited by Harmonic and Lightning Type Signals

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The transient response of a system of independent electrodes buried in a semi-infinite conducting medium is studied. Using a simple and versatile numerical scheme written by the authors and based on the Electric Field Integral Equation (EFIE), the effect caused by harmonic signals ranging on frequency from Hz to hundred of MHz, and also by lightning type driving signal striking at a remote point far from the conductors, is extensively studied. The value of the scalar potential appearing on the electrodes as a function of the frequency of the applied signal is one of the variables investigated. Other features such as the input impedance at the injection point of the signal and the Ground Potential Rise (GPR) over the electrode system are also discussed.
Cite this paper
Faleiro, E. , Asensio, G. , García, D. , Denche, G. and Moreno, J. (2014) Transient Behavior of a System Composed of Conductive Thin Wire Structures Excited by Harmonic and Lightning Type Signals. Journal of Electromagnetic Analysis and Applications, 6, 342-357. doi: 10.4236/jemaa.2014.611035. 
 

[1] Grcev, L. and Dawalibi, F. (1990) An Electromagnetic Model for Transients in Grounding Systems. IEEE Transactions on Power Delivery, 5, 1773-1781.
http://dx.doi.org/10.1109/61.103673
[2] Grcev, L. (1996) Computer Analysis of Transient Voltages in Large Grounding Systems. IEEE Transactions on Power Delivery, 11, 815-823.
http://dx.doi.org/10.1109/61.489339
[3] Grcev, L. (1992) Computation of Transient Voltages Near Complex Grounding Systems Caused by Lightning Currents. Symposium Record of the IEEE 1992 International Symposium on Electromagnetic Compatibility, 92CH3169-0, 393-400.
[4] Vuckovic, D.D. et al. (2012) Study on a Standard for Grounding Systems Realization. Serbian Journal of Electrical Engineering, 9, 393-401.
http://dx.doi.org/10.2298/SJEE1203393V
[5] Colominas, I., et al. (2012) Advanced Computer Methods for Grounding Analysis. Proceedings of the World Congress on Engineering and Computer Science 2012 (WCECS 2012), Vol. II, San Francisco, 24-26 October 2012.
[6] Cristina, S. and Orlandi, A. (1992) Calculation of the Induced Effects Due to a Lightning Stroke. Proc. Inst. Elect. Eng. B, 139, 374-380.
[7] Charlton, T., Davies, M. and Baudin, D. (2007) Tranfer Potentials from MV to LV Installations during an Earth Fault. CIRED, 19th International Conference on Electricity Distribution, Vienna, 21-24 May 2007, Paper No. 0805.
[8] Poljak, D., et al. (2011) Electromagnetic Field Coupling to Multiple Buried Thin Wires. Proceedings of the 10th Symposium on Electromagnetic Compatibility, (EMC, Europe 2011), York, 26-30 September 2011, 272-277.
[9] Ala, G. and Di Silvestre, M.L. (2002) A Simulation Model for Electromagnetic Transients in Lightning Protection Systems. IEEE Transactions on Electromagnetic Compatibility, 44, 539-554.
http://dx.doi.org/10.1109/TEMC.2002.804773
[10] Harrington, R.F. (1993) Field Computation by Moment Methods. IEEE Press, New York.
http://dx.doi.org/10.1109/9780470544631
[11] Gibson, W.C. (2008) The Method of Moments in Electromagnetics. Chapman & Hall/CRC, Boca Raton.
[12] Wang, J.H. (1991) Generalized Moment Methods in Electromagnetics. Wiley Interscience, New York.
[13] Berberovic, S., Haznadar, Z. and Stih, Z. (2003) Method of Moments in Analysis of Grounding Systems. Engineering Analysis with Boundary Elements, 27, 351-360.
http://dx.doi.org/10.1016/S0955-7997(02)00123-6
[14] Ala, G., Buccheri, P., Francomano, E. and Tortorici, A. (1994) An Advanced Algorithm for Transient Analysis of Grounding Systems by Moments Method. 2nd International Conference on Computation in Electromagnetics, London, 12-14 April 1994, 363-366.
[15] Liu, Y., Theethayi, N. and Thottappillil, R. (2005) An Engineering Model for Transient Analysis of Grounding System under Lightning Strikes: Nonuniform Transmission-Line Approach. IEEE Transactions on Power Delivery, 20, 722-730.
http://dx.doi.org/10.1109/TPWRD.2004.843437
[16] Geri, A. (1999) Behavior of Grounding Systems Excited by High Impulse Currents: The Model and Its Validation. IEEE Transactions on Power Delivery, 14, 1008-1017.
http://dx.doi.org/10.1109/61.772347                    eww141006lx
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