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This research aims to enhance the safety of substation grounding designs in high-resistivity environments.

May 3, 2026Open Access

Optimizing Substation Grounding Design in High-Resistivity Arid Terrains: A Multi-Regional Geoelectric Analysis and Mitigation Framework

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Randomized trial evaluates substation grounding safety in five geoclimatic zones, indicating a new mitigation framework.

This research aims to enhance the safety of substation grounding designs in high-resistivity environments.
Evaluated Vertical Electrical Sounding (VES) at 62 stations using Schlumberger array to create 1D geoelectric models.
Mapped deep conductive horizons up to 80m to assess fault dissipation efficiency using Reflection Factor (K) and surface resistivity.
Developed a Hybrid Grounding Design Framework and Compliance Matrix for various geoclimatic regions.
Identified a 'High-Resistivity Hazard Zone' in Saudi Arabia and Niger with resistivity exceeding 800 Ὠm and system resistances of 4.5 – 12.0 Ὠm failing the safety threshold.
For saline environments in Iraq and Kuwait, the 'Corrosion-Conductivity Paradox' was observed as low resistance countered by high corrosion rates.
Recommended Deep Grounding Wells (>50m) for high-resistivity sites to ensure safety compliance.

D et al. (2026) studied this question.

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