Fast Calculation of the Electromagnetic Field by a Vertical Electric Dipole Over a Lossy Ground and Its Application in Evaluating the Lightning Radiation Field in the Frequency Domain

The evaluation of the electromagnetic field radiated by a lightning stroke is of essential importance for the study of the interaction between lightning electromagnetic fields and power lines, or other sensitive installations. A fast algorithm for calculating the fields generated by a vertical elect...

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Vydané v:	IEEE transactions on electromagnetic compatibility Ročník 52; číslo 1; s. 147 - 154
Hlavní autori:	Jun Zou, Jiang, T.N., Jae Bok Lee, Chang, S.H.
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	New York, NY IEEE 01.02.2010 Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Predmet:	Accuracy Algorithms Applied sciences Arcs, sparks, lightning Asymptotic extraction technology (AET) Asymptotic properties Data mining Electric dipoles Electric discharges Electrical engineering. Electrical power engineering Electrical power engineering Electromagnetic fields Electromagnetics Electromagnetism Erbium Exact sciences and technology Grounds Integrals Lightning Magnetic resonance imaging Mathematical analysis Mathematical models Miscellaneous numerical quadrature Operation. Load control. Reliability Physics Physics of gases, plasmas and electric discharges Physics of plasmas and electric discharges Power networks and lines Probability density function Sommerfeld integral Studies Field line Electric energy transportation Power system economics Variable parameter circuit Lossy medium Frequency domain method numerical quadrature Asymptotic extraction technology (AET) Sommerfeld integral Vertical dipole Lightning discharge Computation time Electromagnetic power Lightning Sommerfeld integrals Analytical method Recursive method Electromagnetic field Power markets Open market Fast algorithm Electric dipole Comparative study Power transmission line
ISSN:	0018-9375, 1558-187X
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Popis
Shrnutí:	The evaluation of the electromagnetic field radiated by a lightning stroke is of essential importance for the study of the interaction between lightning electromagnetic fields and power lines, or other sensitive installations. A fast algorithm for calculating the fields generated by a vertical electric dipole over a lossy ground, which can be expressed by the well-known Sommerfeld integrals, is presented in this paper. The integrals are decomposed into two parts. One part can be calculated by a recursive analytical expression, and the other part can be evaluated numerically due to the fact that the extracted integrand damps rapidly with the help of the asymptotic extraction technology. A comparison with some approximate formulas is performed in detail with variable parameters, such as the soil parameters, the geometry, and the excitation frequency of dipole, which shows very good agreement as far as the lightning field is concerned. The technical merit of the proposed approach is its universality, which can be applied for arbitrary parameters, and its computing time is still competitive.
Bibliografia:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23 ObjectType-Article-2 ObjectType-Feature-1
ISSN:	0018-9375 1558-187X
DOI:	10.1109/TEMC.2009.2037612