Transient Analyses of Grounding Systems Subjected by Lightning Surge Currents through Fuzzy-Based Models of Input Impedance in the Frequency Domain
Keywords:
Grounding system, Fuzzy inference, input impedance.Abstract
In this paper, fuzzy-based models which is special for electromagnetic problems are applied to model the input impedance of the grounding systems such as vertical and horizontal electrodes. In each model, the behavior of the electrode is first extracted by if-then rules, and then the effects of different parameters for instance soil resistivity and electrode radius are separately extracted as simple curves. Then using spatial membership functions, these effects are combined so as to create simultaneous effects of all parameters on the input impedance. As a result, the input impedance is efficiently predicted for arbitrary resistivity of soil, radius, and normalized length of electrodes. Finally through fast Fourier transform (FFT) and inverse fast Fourier transform (IFFT), the transient voltage for each electrode is efficiently computed.
References
Leonid Grcev, Modeling of Grounding Electrodes under Lightning Currents, IEEE Trans. Electromagn. Compat, vol. 51, NO. 3, Aug 2009.
Thottappillil, “An Improved Transmission-Line Model of Grounding System,†IEEE Trans. Electromagn. Compat, vol. 43, no. 3, Aug 2001.
Leonid Grcev, and Marjan Popov, “On High-Frequency Circuit Equivalents of a Vertical Ground Rod,†IEEE Trans. Power Del, vol. 20, NO. 2, April 2005.
Majid Akbari, et al, “The Effect of Frequency Dependence of Soil Electrical Parameters on the Lightning Performance of Grounding Systems,†IEEE Trans. On Electro Mag. Compat., Vol. 55, No. 4, 2013.
S. Visacro, “A Comprehensive Approach to the Grounding Response to Lightning Currents,†IEEE Trans. On Power Delivery, Vol. 22, No. 1, pp. 381-386, 2007.
M. I. Lorentzu, et al, “Time Domain Analysis of Grounding Electrodes impulse Response,†IEEE Trans. Power. Del., Vol. 18, pp. 517-524, 2003.
M. Tayarani “A novel approach to analysis and modeling of engineering electromagnetic problems and its applications by means of fuzzy interference methods based on new expressions for electromagnetic basic concepts", Ph. D thesis dissertation, University of Electro-Communications, Tokyo ,Japan, 2001.
S. R Ostadzadeh, M. Tayarani, and M. Soleimani, “A hybrid model in analyzing nonlinearly loaded dipole antenna and finite antenna array in the frequency domainâ€, International Journal of RF and Microwave, vol. 19, pp. 512–518, 2009.
S. R Ostadzadeh, “An Efficient hybrid model in analyzing nonlinearly loaded dipole antenna above Lossy Ground in the Frequency Domainâ€, Applied Computational Electromagnetic Society (ACES) Journal, vol. 28, No. 9, pp. 780–787, 2013.
S. B.Shouraki, N. Honda “Fuzzy Prediction; A Method for adaption," 14th fuzzy Symposium, Gifu, Japan, 1988, pp.317-320.
S. Bagheri Shouraki and N. Honda, “Fuzzy Prediction, A method for Adaptation,†14th Fuzzy symposium, Gifu, Japan, June, 1998, pp.317-320.
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