Effect Analysis of Protection Relay Element in the Case of Ground Fault in Microgrid Power System
Dong-Ju Chae, Hae-Gweon Kang, Seung-Taek Lim, Chan-Hyeok Oh, Ki-Yeon Lee · The Transactions of The Korean Institute of Electrical Engineers · 2023
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.