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The paper discusses a modeling procedure that permits calculation of lightning-induced voltages on overhead lines starting from the channel-base current. The procedure makes use of 1) a lightning return-stroke model proposed by the authors for the calculat ...
This paper examines the responses of four different types of shielded conduits to a direct lightning strike. The conduits are buried in the ground and run between two shielded enclosures, one of which is struck by lightning. An induced current flows on the ...
Measurements of return stroke currents on instrumented towers reveal the existence of reflections at the tower bottom and top. In the paper, the effects of the reflections on both measured currents and the original lightning electromagnetic fields are disc ...
The characteristics of lightning overvoltages initiated on overhead distribution lines vary greatly depending on the lightning stroke characteristics, the method of overvoltage generation (direct or induced), the orographic conditions (shielding effects) a ...
Expressions relating far electromagnetic fields and return stroke channel base current have been derived in the literature for various lightning return stroke models. The use of such relations permits the estimation of channel base currents of return strok ...
Researchers working on the problem of the coupling of lightning electromagnetic fields to overhead lines have suggested that, if the formulation of the coupling problem given by Agrawal et al. is adopted, only the horizontal component of the electric field ...
The basic information for designers of lightning protection of MV and LV networks is given in Part I of the present publication. This Part II gives an application of this basic information to the lightning protection of MV networks containing overhead line ...
In this paper, an analysis of electric and magnetic fields radiated by lightning first and subsequent return strokes to tall towers is presented. The contributions of the various components of the fields, namely, static, induction, and radiation for the el ...
Over the past 20 years the use of metalclad switchgear has spread steadily throughout electrical networks and its reliability continues to improve. To optimise the dimensions it is necessary to calculate exactly the transient overvoltages due to various ca ...
We propose in this paper new expressions relating lightning return stroke currents and far radiated electric and magnetic fields, taking into account the presence of an elevated strike object. The derived expressions show that the presence of an elevated s ...
