Motor train unit traction system adopting catenary and energy storing devices for hybrid power supply

A motor train unit traction system adopting a catenary and energy storing devices for hybrid power supply is characterized by mainly comprising a traction transformer, the energy storing devices, traction converters and traction motors, wherein the catenary is connected with a primary side of the traction transformer through a pantograph, and two secondary side windings of the traction transformer are directly connected with the traction converters which are connected with the traction motors; and the energy storing devices are connected with direct current buses in the middles of the traction converters. The motor train unit traction system can simultaneously operate on an electrification line and a non-electrification line, and the braking energy is absorbed through the energy storing devices under the working condition without the catenary, so that cyclic utilization of the energy is realized, and a green energy saving idea is reflected. Under special rainy or snowy weather or when the catenary is damaged, the motor train unit traction system has emergency rescue and readiness functions, and the energy storing devices can also be used as portable power sources.