Study on Statistics of All Parallel Direct Power Supply with Reinforced Wire

This paper adopts simulation method, simulation models are build according to design feature of all parallel direct power supply with strengthen wire .In case of short circuit for traction electric network, impedance of traction electric network measured in traction substation is shown, and compared no strengthen wire with the strengthen wire of the size of the short-circuit impedance. When traction electric network is under the condition of normal operation, the distribution of traction electric network current is shown as well.