Time-Domain Geoelectrical Modeling and Experimental Validation of Ground Potential Rise in Multilayer Soil Structures during Fault Events

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dc.authorid0000-0002-2460-1850
dc.authorid0000-0002-4049-0716
dc.authorid0000-0002-4353-1261
dc.contributor.authorMbasso, Wulfran Fendzi
dc.contributor.authorHarrison, Ambe
dc.contributor.authorDagal, Idriss
dc.contributor.authorMahmoud, Mohamed Metwally
dc.contributor.authorTsobze, Kenfack Saatong
dc.contributor.authorJangir, Pradeep
dc.contributor.authorShaikh, Muhammad Suhail
dc.date.accessioned2026-01-31T15:08:09Z
dc.date.available2026-01-31T15:08:09Z
dc.date.issued2025
dc.departmentİstanbul Beykent Üniversitesi
dc.description.abstractAccurate characterization of subsurface electrical behavior during high-energy fault events is critical for both geotechnical safety assessment and the protection of power infrastructure. This study presents a geophysically driven, time-domain modeling framework for Ground Potential Rise (GPR) in multilayer and anisotropic soils, integrating electromagnetic field theory with physics-informed arc resistance modeling. The methodology employs apparent resistivity profiling and soil impedance mapping, enabling high-resolution simulation of current density and voltage gradients under realistic subsurface conditions. A coupled numerical-experimental approach is implemented: finite-element simulations incorporating layered earth resistivity are calibrated against controlled fault injection tests using scaled grounding grids in stratified soil. The model achieves an average deviation of less than 4.7% from measured GPR and step/touch voltages, demonstrating strong predictive reliability. Results reveal that conventional steady-state and homogeneous soil assumptions can underestimate hazardous step voltages by up to 63% and misrepresent the spatial extent of GPR zones by more than a factor of two. Comparative analyses show that optimized grounding grids reduce surface current densities by over 90% compared to isolated systems, significantly enhancing compliance with safety thresholds. Beyond its immediate application to substation and renewable energy grounding, the framework offers a transferable geoelectrical tool for infrastructure risk mapping, lightning hazard assessment, and geotechnical site evaluations in complex soil environments.
dc.description.sponsorshipEuropean Union [CZ.10.03.01/00/22_003/0000048]
dc.description.sponsorshipThis article has been produced with the financial support of the European Union under the REFRESH-Research Excellence For REgion Sustainability and High-tech Industries project number CZ.10.03.01/00/22_003/0000048 via the Operational Programme Just Transition.
dc.identifier.doi10.1002/ese3.70433
dc.identifier.issn2050-0505
dc.identifier.scopus2-s2.0-105026484204
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org./10.1002/ese3.70433
dc.identifier.urihttps://hdl.handle.net/20.500.12662/10597
dc.identifier.wosWOS:001650561100001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherWiley
dc.relation.ispartofEnergy Science & Engineering
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20260128
dc.subjectapparent resistivity modeling
dc.subjectelectrical resistivity tomography
dc.subjectfault hazard assessment
dc.subjectground potential rise
dc.subjectmultilayer soil resistivity
dc.subjecttime-domain geoelectrics
dc.titleTime-Domain Geoelectrical Modeling and Experimental Validation of Ground Potential Rise in Multilayer Soil Structures during Fault Events
dc.typeArticle

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