Transient electromagnetic field radiated by grounding systems caused by lightning strike in a dissipative half-space. Issue 1 (1st January 2017)

• Record Type: Journal Article
• Authors: Rouibah, T.; Bayadi, A.; Harid, N.; Kerroum, K.
• Editors: Aminifar, Farrokh
• Is Part Of: Cogent engineering. Volume 4:Issue 1(2017)
• Publication Date: 2017-01-01
• Subjects: lightning -- electromagnetic field -- Hertzian dipole -- NEC4 -- transient -- Sommerfeld integrals -- grounding; Engineering -- Periodicals; Technology -- Periodicals; Engineering; Technology; Periodicals; 620
• DOI: 10.1080/23311916.2017.1410986
• Languages: English
• ISSNs: 2331-1916

Abstract

Abstract: In this work, a method is proposed for the calculation of the electromagnetic field radiated by a grounding system in a semi-infinite dissipative medium subjected to a current excitation generated by the lightning strike. The assessment of the induced current distribution on the grounding system due to a transient excitation is obtained by solving Pocklington's equation using the method of moments. A new method for the calculation of the transient electromagnetic field following the injection of a lightning current or short circuit is also developed. This method is based on the concept of the hertzian dipoles and the asymptotic expansion of a single dipole. A MATLAB computer program has been developed for the determination of the induced currents. The program is validated by comparing its results with those obtained with the commercial software NEC 4.