Potential Probe Position in Grounding Resistance Measurement of Combination electrode in Multi-Layer Ground by the Fall-of-Potential Method

摘要

A difficult problem is encountered when the grounding resistance of a large grounding system is measured by the fall-of-potential method. The problem is that a horizontal curve section does not exist with a fall-of- potential curve. In this case it is difficult to estimate the grounding resistance from the fall-of-potential curve. In this paper, methods for determination of potential probe position to estimate the grounding resistance Of a combination of horizontal and vertical electrode are proposed when horizontal curve section does not Exist.