Ground Resistance Measurement with Fall-of-Potential Method Using Capacitive Test Probes

Estimation of novel position for the current and potential probe for the fall of potential method

“…Choi et al [9] nominated the separation between the tested grid and the current probe to be in the order of 2.37 times the dimension of the grid under test. The research in [10][11][12] covers the FOP method; however, there is no dimension in the papers to relate the grid size with the current lead length. The work in [13]i s based on current lead lengths of more than ten times the electrode length.…”

“…In many cases, the locations of the HV infrastructure within high-density area do not provide large testing area. As shown in [6][7][8][9][10][11][12][13][14], in order for the FOP to yield accurate results, large separation must be established between the current probe and the tested grid. Therefore the use of the FOP for short separation between the tested grid and the current probe will not yield accurate results.…”