Abstract:Finding out the factors influencing the utilization rate of regenerative braking energy of Urban Rail Transit(URT) vehicles is of great significance for improving the scientificity of energy-saving measures in URT operation. Based on a built simulation model, the scenario analysis method was used to quantitatively analyze the influencing factors of departure interval, time difference, passenger load, traffic density and road condition on regenerative braking energy utilization rate and traction energy consumption of traction substation. The main factors were given. The multi-condition simulation of the low regenerative braking utilization indicate that the opening times of train braking resistance and the occurrence times of low voltage at the station are strongly correlated with the utilization of regenerative braking energy and power quality of the station. Taking the departure interval of multi--period operation of Shanghai metro line as an example, the simulation strategy of URT departure interval was discussed to guide capacity allocation of the stationary energy storage system. The results of this paper can provide reference for the formulation of energy-saving measures for URT.
