| Title |
Transient Grounding Impedance Characteristic Analysis of a Copper Rod-type Grounding Electrode used for Electric Distribution Systems Using MATLAB Program |
| Authors |
Kyung-Chul Kim ; Kyung-Hoon Oh ; Kyu-Jin Lee ; Keon-Bo Shim ; Jong-Ki Choi |
| Keywords |
Copper Rod ; Transient Grounding Impedance ; Lightning Surge ; Frequency Characteristics ; Conventional Grounding Impedance |
| Abstract |
Although a ground resistance is a good index of grounding performance for grounding electrodes, it does not reflect the grounding performance during transient state. A copper rod electrode is the most commonly used grounding electrode in electric distribution systems. In this paper, the grounding impedance of copper rods has been measured in frequency raging from 60[㎐] up to 100[㎑] and an equivalent model of the grounding impedance is identified from the measured values. The grounding impedance under study when a typical lightning surge is injected into the grounding system was simulated numerically and graphically through the use of the MATLAB software program. |