TY - JOUR N2 - When a single line-to-ground fault occurs in the ungrounded distribution system, the steady-state fault current is relatively small for fault analysis and the transient fault current is observable, which can be used for faulted feeder identification and location. The principal frequency component retains most of the characteristics of the transient current. The principal frequency is related to the distance from the fault point to the substation and can be used for fault location. This paper analyzes the sequence network model of a single line-to-ground fault in the distribution network, and gives a method for principal frequency calculation. Depending on the characteristics of the maximum amplitude of the principal frequency component of the faulted feeder, the method of faulted feeder identification is given. Based on the complementary characteristics of the phase angle of the principal frequency component of the fault current and the phase angle at the substation bus, the faulted section location is carried out. MATLAB simulation is used to verify the effectiveness of the faulted feeder identification and location method. L1 - http://journals.pan.pl/Content/117023/PDF/art13.pdf L2 - http://journals.pan.pl/Content/117023 PY - 2020 IS - No 3 EP - 704 DO - 10.24425/aee.2020.133926 KW - fault identification KW - fault location KW - single line-to-ground fault KW - principal frequency component A1 - Liu, Ling PB - Polish Academy of Sciences VL - vol. 69 DA - 2020.09.15 T1 - Faulted feeder identification and location for a single line-to-ground fault in ungrounded distribution system based on principal frequency component SP - 695 UR - http://journals.pan.pl/dlibra/publication/edition/117023 T2 - Archives of Electrical Engineering ER -