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

fYear

2012

fDate

2-7 Sept. 2012

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICLP.2012.6344333

Filename

6344333