Jin-Sol Song, Gyu-Jung Cho, Ji-Soo Kim, Jae-Yun Shin, Dong-Hyun Kim, Chul-Hwan Kim,
2018, A Study on the Optimal Setting Method of Directional Overcurrent Relay Con-
sidering Fault Ride Through of Distributed Generation, The transactions of The Korean
Institute of Electrical Engineers, Vol. 67, No. 8, pp. 1002-1008