Title :
Comparison of Lightning-Induced Current Simulations in the Time and Frequency Domains Using Different Computer Codes
Author :
Aniserowicz, Karol ; Maksimowicz, Tomasz
Author_Institution :
Fac. of Electr. Eng., Bialystok Univ. of Technol., Bialystok, Poland
fDate :
5/1/2011 12:00:00 AM
Abstract :
A simulation of lightning-caused currents and fields with the use of seven commonly applied computer codes (NEC-2, NEC-4, AWAS-2, CDEGS, WIPL-D, MININEC, and FEKO) is presented. Near-field computations in a wide-frequency band from 100 Hz to 10 MHz with the assumption of perfectly conducting ground are performed. Similarities and discrepancies of computation results observed both in the time and frequency domains are described. The discrepancies originate from the application of different approximation techniques. Numerical problems are compared using an example of a loop located inside a lightning protection system directly hit by lightning. The paper is supplemented by a short description of the computer programs and two examples with analytical solution validating the numerical results.
Keywords :
approximation theory; computational electromagnetics; earthing; electromagnetic pulse; frequency-domain analysis; lightning protection; time-domain analysis; AWAS-2 code; CDEGS code; FEKO code; MININEC code; NEC-2 code; NEC-4 code; WIPL-D code; approximation technique; computer codes; frequency 100 Hz to 10 MHz; frequency domain analysis; lightning electromagnetic pulse; lightning protection system; lightning-caused field; lightning-induced current simulation; near-field computation; perfectly conducting ground; time-domain analysis; wide-frequency band; Approximation methods; Computational modeling; Computers; Frequency domain analysis; Lightning; Load modeling; Time domain analysis; Lightning electromagnetic pulse (LEMP); lightning protection system (LPS); numerical simulation; shielding effectiveness;
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
DOI :
10.1109/TEMC.2010.2076338