Analysis of Grounding Systems in Horizontal Multilayer Soils Containing Finite Heterogeneities

This paper presents a theoretical model for the analysis of grounding systems located in multilayer soils in which arbitrary heterogeneities (finite volumes) are embedded. The presence of the heterogeneities is handled through a boundary element method, whereas that of the horizontal soil layers is...

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Bibliographic Details
Published in:IEEE transactions on industry applications 2015-11, Vol.51 (6), p.5095-5100
Main Authors: Fortin, Simon, Mitskevitch, Nina, Dawalibi, Farid P.
Format: Article
Language:English
Subjects:
Computational modeling
Conductivity
Conductors
earth potential and ground potential rise
Grounding
grounding/earthing
heterogeneous soil volumes
layered soils
Nonhomogeneous media
Soil
Solid modeling
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Summary:This paper presents a theoretical model for the analysis of grounding systems located in multilayer soils in which arbitrary heterogeneities (finite volumes) are embedded. The presence of the heterogeneities is handled through a boundary element method, whereas that of the horizontal soil layers is analytically handled using image theory (or any other equivalent technique). Numerical results are presented for several cases and are shown to agree with limiting cases. The results also clearly show that the presence of finite heterogeneities in multilayer soils can have a very strong impact on the safety performance of a grounding system.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2015.2409793