| Title |
Ground Impedance Characteristics Analysis of a Copper Rod-type Grounding Electrode used for Electric Distribution Systems |
| Authors |
Kyung-Chul Kim ; Ju-Hong Lee ; Seong-Eun Jin ; Jung-Suk Oh ; Sang-Young Park ; Jong-Ki Choi ; You-June Kim |
| Keywords |
Ground impedance ; Copper rod ; Frequency characteristic ; Equivalent circuit model ; Transfer function model |
| Abstract |
Grounding insures a reference potential point for electric devices and also provides a low resistance path for fault currents in the earth. The ground impedance as a function of frequency is necessary for determining its performance since fault currents could contain a wide range of frequencies. A copper rod electrode is the most commonly used grounding electrode in electric distribution systems. In this paper, the ground impedance of copper rods has been measured in frequency ranging from 60[Hz] up to 100[kHz] and an equivalent circuit model, transfer function model of the ground impedance are identified from the measured values. |