China's normal speed electrified railway mainly adopts the double-track direct power supply mode. The feeder protection devices of major domestic manufacturers adopt the reactance method to locate the fault point based on the reactance-distance table in case of single-track fault. Due to the influence of mutual inductance between the up-line and down-line, the reactance values detected at the feeder port of the substation under single-track fault and double-track fault are not equal. When the fault occurs on double-track traction network, the reactance-distance table in case of single-track fault will cause large fault location error, and the up-line and down-line current ratio method will also be affected by the non-uniformity of electrical parameters of the traction network. The circuit model of the double-track direct power supply traction network with station yard is analyzed in this paper. The reasons for the inaccuracy of the up-line and down-line current ratio fault location method are analyzed and an improved application scheme of the up-line and down-line current ratio fault location method is proposed. The accuracy of the scheme is verified based on Matlab/Simulink simulation model.
11月03日
2022
11月05日
2022
初稿截稿日期
注册截止日期
报告提交截止日期
2024年11月06日 中国 Wuhan
China International Youth Conference on Electrical Engineering (CIYCEE 2024)2023年12月08日 中国 Chengdu
4th China International Youth Conference on Electrical Engineering2023年07月11日 中国 Chengdu
2nd China International Youth Conference on Electrical Engineering2020年11月02日 中国 Wuhan
China International Youth Conference on Electrical Engineering