Simulation Analysis And Energy Saving Research Of Regenerative Energy Feeder System For Subway Traction Power Supply

China's urban rail transit has entered a period of rapid development,followed by the rapid update and development of related equipment and technology.In the actual operating cost,electricity is an important part.At the same time,under the national environment of energy conservation and environmental protection,a variety of energy feedback and absorption devices have been widely developed and applied in urban rail transit power supply system.In this paper,several common energy feedback devices are compared from the aspects of working principle,cost,service life and environmental impact,etc.,and comprehensive cost performance,energy conservation,environmental protection and technology maturity and other factors,select medium-voltage inverter regenerative braking energy absorption device as the research object.Articles related to the regeneration can feed device structure and the working principle of the equipment are analyzed and summarized,and gives the analysis and calculation method of the regenerative braking energy can set the medium voltage feedback system simulation model,simulation and analysis of the system in the actual operation parameters under different working conditions,completed the medium voltage inverter feedback type of regenerative braking energy absorption devices in the system of urban rail transit operation performance analysis and simulation.Based on the actual operating conditions and energy consumption data of the independent branch medium-voltage inverter-type energy feed system in the metro project,some Suggestions for improving the actual work efficiency and energy saving layout optimization design of the system are put forward.The research results of this paper can also be used for setting energy feed system of other subway power supply systems,switching in and out,and evaluating energy saving effect of energy feed equipment.