Induced Current Distribution in 3D Soil Model as Lightning Impulse Discharge Strike Earth Surface

Discharge current distribution generated as a lightning strike traverse from the atmosphere into a soil surface and below with varying conductivity were investigated using a laboratory-size electrode configuration system consisting of a point discharge electrode and nine under-soil grounding electro...

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Bibliographic Details
Published in2019 9th International Conference on Power and Energy Systems (ICPES) pp. 1 - 6
Main Authors Fajingbesi, Fawwaz Eniola, Shahida Midi, Nur, Elsheikh, Elsheikh M. A., Hajar Yusoff, Siti, Khan, Sheroz, Azman, Amelia Wong
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2019
Subjects
Discharge Current
Ionization parameters
Lightning Discharge
Soil Conductivity
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Summary:Discharge current distribution generated as a lightning strike traverse from the atmosphere into a soil surface and below with varying conductivity were investigated using a laboratory-size electrode configuration system consisting of a point discharge electrode and nine under-soil grounding electrodes. Discharge emission and the electric potential of the soil were with significant change upon slight variation in soil conductivity across the surface and along with an increase in depth. Non-linear degradation phenomena in the soil conductivity also occur after a subsequent discharge of lightning strike indicating a breakdown of soil properties. The results of a numerical model in COMSOL Multiphysics AC/DC module further shed a graphical illustration of the current pathway validating the experimental data.
DOI:10.1109/ICPES47639.2019.9105411