Simulation calculation method and device for urban rail transit traction power supply system

Abstract

The application provides a simulation calculation method of a traction power supply system of urban rail transit, comprising the following steps: constructing a locomotive load model, establishing a locomotive operation state information table of a unified time section, combining the position of the locomotive with the position of a traction station in a line, and obtaining a topology structure analysis of different time sections; constructing a traction power supply system model, obtaining rated voltage, line length, line unit impedance and traction station position; simulating a plurality of locomotives starting from a vehicle depot and running from a first end of the line to a last end of the line, obtaining the power and position values of each locomotive according to the locomotive load model, and then substituting the power and position values into the traction power supply system model to complete power flow calculation of a DC traction network, and obtaining the current, voltage of the locomotive, bus voltage and feeder current values of the traction station; the application can simulate the power of the train under different operation states, and calculate the bus voltage and feeder current of each traction station of the traction power supply system.

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