Grounding resistance measurement using fall-of-potential methodwith potential probe located in opposite direction to the current probe

摘要

This paper presents errors in grounding resistance measurementnusing the fall-of-potential method with the potential probe located innthe opposite direction to the current probe. Errors are obtained withncomputer simulation. Such ground electrodes as a counterpoise, a grid, anrod and a combination of them are considered here. The soil is supposednto be extended to two-layer structure. Numerical results are computed bynthe current source simulation method and the method of images