| Title |
Effect Analysis of Protection Relay Element in the Case of Ground Fault in Microgrid Power System |
| Authors |
채동주(Dong-Ju Chae) ; 강해권(Hae-Gweon Kang) ; 임승택(Seung-Taek Lim) ; 오찬혁(Chan-Hyeok Oh) ; 이기연(Ki-Yeon Lee) |
| DOI |
https://doi.org/10.5370/KIEE.2023.72.3.467 |
| Keywords |
microgrid; distribution power system; under voltage relay; over current ground relay; frequency relay |
| Abstract |
Microgrid is being reviewed in many power systems as a supplement that can compensate for the shortcomings of central power supply, such as a remote and an out-of-the-way power supply. Simulated verification is needed to establish an electrical protection cooperation system, such as protection of human/livestock and power facilities and prevention of ripple to nearby areas. In this paper, verification of the optimal protection cooperation system valid under all assumed on/off grid conditions was conducted by reviewing the possibility of the location of ground fault, installation location of protection device, and relay element. |