IEEE Transactions on Power Delivery · 1998 · 43 citations · 3 references
EngineeringElectrical EngineeringGeotechnical EngineeringSoil MechanicsSoil PhysicsElectrical Conductivity Of SoilsElectrical MeasurementElectromagnetic MethodsElectrode Potentials In SoilsGround Resistance MeasurementPotential MeasurementSoil ElectrodesTwo-layer ClosureTwo-layer Flow Structure
Grounding resistance measurements assume a two‑layer soil model. The study examines errors in the fall‑of‑potential method when the potential probe is placed opposite the current probe. Computer‑based simulations, including current‑source and method‑of‑images models, were used to evaluate errors for counterpoise, grid, rod, and combined electrodes.
This paper presents errors in grounding resistance measurement using the fall-of-potential method with the potential probe located in the opposite direction to the current probe. Errors are obtained with computer simulation. Such ground electrodes as a counterpoise, a grid, a rod and a combination of them are considered here. The soil is supposed to be extended to two-layer structure. Numerical results are computed by the current source simulation method and the method of images.
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