Lightning-induced voltages calculated with the hybrid electromagnetic model considering frequency-dependent soil parameters

Author

Silveira, Fernando H. ; Visacro, Silverio ; Ferreira, Henrique B. ; De Conti, Alberto

Author_Institution

LRC - Lightning Res. Center, UFMG - Univ. Fed. de Minas Gerais, Belo Horizonte, Brazil

fYear

2013

fDate

7-11 Oct. 2013

Firstpage

236

Lastpage

240

Abstract

A preliminary investigation on lightning-induced voltages over lossy ground including the effect of the frequency dependence of soil parameters by means of systematic simulations using the HEM model is presented, considering realistic representations of lightning currents of first and subsequent strokes. The results show that this effect promotes the decrease of lightning-induced voltage amplitudes, mainly for high resistivity soils.

Keywords

electromagnetism; lightning; soil; HEM model; first stroke; frequency-dependent soil parameters; high resistivity soils; hybrid electromagnetic model; lightning-induced voltage amplitudes; lightning-induced voltage calculation; lightning-induced voltage preliminary investigation; lossy ground; realistic lightning current representations; subsequent stroke; systematic simulations; Conductivity; Frequency dependence; Grounding; Lightning; Mathematical model; Soil; Surges; frequency dependence of soil parameters; lightning-induced voltages; lossy ground; soil resistivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Lightning Protection (XII SIPDA), 2013 International Symposium on

Conference_Location

Belo Horizonte

Print_ISBN

978-1-4799-1343-5

Type

conf

DOI

10.1109/SIPDA.2013.6729180

Filename

6729180