Title :
A Study of the influence of channel resistance parameters on lightning-induced voltages on overhead lines
Author :
De Conti, Alberto ; Visacro, Silverio
Author_Institution :
LRC - Lightning Res. Center, UFMG - Fed. Univ. of Minas Gerais, Belo Horizonte, Brazil
Abstract :
In this paper, a lightning return-stroke model that considers a nonlinear resistance is used to investigate the influence of three different parameters on lightning-induced voltages on a nearby overhead line, namely channel conductivity, initial channel radius, and a constant responsible for controlling the rate of radial expansion of the channel. The obtained results suggest that the modification of the return-stroke current resulting from realistic variations of such parameters is unlikely to lead to significant changes on calculated lightning-induced voltages.
Keywords :
lightning protection; power overhead lines; channel conductivity; channel radius; channel resistance parameters; lightning return-stroke model; lightning-induced voltages; nonlinear resistance; overhead lines; radial expansion; return-stroke current; Conductivity; Electromagnetic compatibility; Lightning; Mathematical model; Nonlinear distortion; Optical distortion; Resistance; Lightning-induced voltages; nonlinear channel resistance; return-stroke models;
Conference_Titel :
Electromagnetic Compatibility (EMC Europe), 2014 International Symposium on
Conference_Location :
Gothenburg
DOI :
10.1109/EMCEurope.2014.6930970
