A Study on the Performance Analysis of Lattice Ground Electrodes Considering Transient States

In this paper, we studied a Lattice grounding electrode satisfying KEC and verified its performance through CDEGS simulation and experimental demonstration. In order to evaluate the performance of the grid grounding electrode, the touch voltage, step voltage, grounding electrode resistance, and ground potential rise were analyzed in case of ground fault to verify the validity of the proposed method. In addition, in order to evaluate the performance of the proposed grounding electrode under transient conditions such as lightning, various frequencies were applied to the grounding electrode considering the transient conditions and its characteristics were analyzed. The maximum frequency was set to 1[MHz], which is the maximum frequency of the lightning impulse, and the utilization of the grid grounding electrode was studied.