URBAN RAIL TRANSIT TRACTION POWER SUPPLY DYNAMIC MODEL SIMULATION TEST SYSTEM

Disclosed in embodiments of the present invention is an urban rail transit traction power supply dynamic model simulation test system, comprising: a master substation having a first capacity, a traction step-down substation having a second capacity, a rail, and a vehicle to be tested. The master substation reduces the voltage of first alternating current and outputting second alternating current to the traction step-down substation; the ratio of the first capacity to the capacity of the master substation in a traction power supply system is a first preset value; the ratio of the second capacity to the capacity of the traction step-down substation in the traction power supply system is a second preset value; the traction step-down substation is used for reducing the voltage of the second alternating current, converting the alternating current to direct current, and outputting first direct current to the vehicle to be tested, so that the vehicle to be tested can run on the rail under the driving of the first di