A bidirectional interactive high-voltage electric railway traction power supply system

A bidirectional interactive high-voltage electric railway traction power supply system, a plurality of traction substation, a first traction substation transformer is connected on the AC bus and a plurality of second transformer is connected on the AC bus, a first transformer connected to a high voltage rectifier a first high-pressure connection or two-way communication - DC converter, a second high-voltage transformer connected to the second bidirectional AC - DC converter, a first high voltage rectifier or bidirectional high voltage AC - DC converter and the second bidirectional high voltage AC - DC converter connected located on high voltage DC bus substation traction, high voltage DC bus through the catenary and the electric locomotive rail, traction substation has a contact line connecting the high voltage DC bus partition, a high pressure between the adjacent two traction substations electric cars have a charging and discharging system, the new DC power source and a plurality of distributed energy systems microgrid composed of a low voltage DC on the DC bus. The present invention improves the reliability of high-voltage power supply of traction power supply system.