| Title |
Measurement of Resistance of Multi-Grounded System by Ground Current Measurement |
| Authors |
최종기 ; 안용호 ; 정길조 ; 한병성 ; 김경철 |
| Keywords |
접지전류 ; 접지저항 ; 다중접지 ; 분류계수 ; |
| Abstract |
Measuring ground resistance has been a popular method of evaluation of the grounding electrode performance. If some portions of grounding electrodes are lost by corrosion, aging or other reasons, consequent deteriotation of the grounding performance would be resulted. It is one of the reasons why it is required to evaluate the performance of grounding systems regularly. However, in case of the electric facilities with multi-grounded system such as power substations with multi-grounded overhead ground wires and/or distribution line neutrals, it is practically difficult to disconnect neutrals or skywires from the substation grounding mesh for the ground resistance measurement. In this paper, a method for the grounding performance measurement of multi-grounded systems, which is based on the measuring ground current distributions, has been proposed. A field test results has shown the validity of the proposed test method. |