Title :
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
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;
Conference_Titel :
Lightning Protection (XII SIPDA), 2013 International Symposium on
Conference_Location :
Belo Horizonte
Print_ISBN :
978-1-4799-1343-5
DOI :
10.1109/SIPDA.2013.6729180
