Title :
Impulse response of grounding grids: Experimental versus simulated results
Author :
Guimaraes, M.N. ; Araujo, L. ; Castro, R.V. ; Santos, L.F.D. ; Vale, M. H Murta ; Visacro, S.
Author_Institution :
LRC - Lightning Res. Center, UFMG - Fed. Univ. of Minas Gerais, Belo Horizonte, Brazil
Abstract :
The experimental and simulated responses of a grounding grid, comprising 20 4-m-×-4-m meshes buried in a 160-Ωm soil, subjected to currents with lightning-patterned waveforms were determined. Simulations considered assumptions of constant and frequency dependent soil resistivity and permittivity. The amplitude and waveform of the measured and simulated grounding potential rise were quite similar and, due to the low value of soil resistivity, the frequency dependence of soil parameters practically did not affect the results.
Keywords :
earthing; lightning protection; soil; grounding grids; impulse response; lightning patterned waveform; soil permittivity; soil resistivity; Current measurement; Electrodes; Frequency dependence; Ground penetrating radar; Grounding; Soil; Soil measurements; Grounding grid; experimental and simulated response of grounding electrodes; frequency dependence of soil resistivity and permittivity; lightning currents;
Conference_Titel :
Lightning Protection (ICLP), 2012 International Conference on
Conference_Location :
Vienna
Print_ISBN :
978-1-4673-1898-3
Electronic_ISBN :
978-1-4673-1896-9
DOI :
10.1109/ICLP.2012.6344333
