| Title |
Grounding Resistance and Current Characteristics of the Planar Earth Structure using Multiple Discharge Paths |
| Authors |
김영선(Kim, Young-Sun) ; 김동민(Kim, Dong-Min) ; 이기식(Lee, Ki-Sik) |
| DOI |
https://doi.org/10.5370/KIEE.2016.65.9.1564 |
| Keywords |
Grounding resistance ; Planar earth structure ; Multiple discharge path ; Discharge current |
| Abstract |
This study proposes a newly modified form of existing ground electrodes in order to secure trust of grounding system for large current caused by a stroke of lightning. Proposed planar earth structure has a several needle electrodes around a circular rod and 4 plane electrodes in all directions. The plane electrodes are fused with the insulator on the linear rod, so that they're electrically isolated. The concept is to increase the discharge amount of earth structure using multiple discharge paths like needle and plane electrodes. To check the discharge efficiency of the suggested scheme, the discharge currents are compared with typically used two kinds of ground rods. To ensure accuracy in the measurement of the discharge current, the same material was used for the comparison model. Also, the ground resistance are simulated by CDEGS commercial software and the results are compared with measured data. Based on this kind of experimental study, the suggested ground rod can be used when designing a ground system or when constructing a ground system at the site. |