In this paper, methods of fault location are discussed in electrical traction single-end direct power supply network systems.Based on the distributed parameter model Wide Brim Sun Hat of the system, the position of the short-circuit fault can be located with the aid of the current and voltage value at the measurement end of the electrical traction line.Furthermore, the influence of the transient resistance, the position of the locomotive, locomotive load for fault location are also discussed.MATLAB simulation BotCon/TFCC/Exclusives tool is used for the simulation experiments.Simulation results are proved the effectiveness of the proposed algorithms.