Field data is collected using the Wenner 4-pin method. CDEGS imports this raw data (pin spacing vs. apparent resistance).
Comparison: A traditional calculation might use an average resistivity of 100 Ω-m. CDEGS might reveal a two-layer structure of 500 Ω-m for the top 2 meters and 20 Ω-m below. This distinction drastically changes the surface voltage gradient calculation. cdegs earthing
GPR is the maximum voltage a grounding system may attain relative to remote earth. CDEGS calculates GPR ($I_g \times R_g$) by considering the leakage current from every segment of the grid, unlike analytical formulas that treat the grid as a uniform disc. Field data is collected using the Wenner 4-pin method
Engineers use specific modules within the CDEGS suite to address different engineering challenges: Comparison: A traditional calculation might use an average
While traditional analytical formulas provide a foundational understanding of earthing, they lack the fidelity required for modern high-voltage installations where safety and cost-efficiency are paramount. CDEGS offers a robust solution by accurately modeling multi-layer soil structures and solving the electromagnetic field equations governing current flow.
The design of safe and effective earthing systems for high-voltage installations presents significant engineering challenges due to complex soil structures and the limitations of traditional analytical calculation methods. This paper explores the application of the software package. It contrasts simplified uniform soil models with CDEGS's multi-layered and finite element analysis capabilities. The paper demonstrates how CDEGS is utilized to model soil resistivity, optimize grid conductor placement, and mitigate hazardous step and touch potentials, ensuring compliance with international standards such as IEEE Std 80.