Alternating current and direct current mixed traction power supply system with ice melting function

The invention relates to an alternating current and direct current mixed traction power supply system with an ice melting function. The alternating current and direct current mixed traction power supply system comprises an alternating current power supply assembly, a direct current power supply assembly and a discharging coil, wherein the alternating current power supply assembly is used for realizing alternating current power supply, a traction transformer of the alternating current power supply assembly is connected into a traction power supply net through a first circuit breaker, the traction transformer outputs alternating current after the voltage reduction and is connected with the traction net through an alternating current feeder switch, the direct current power supply assembly is used for realizing direct current power supply, a rectifying transformer of the direct current power supply assembly is connected into a traction power supply net through a second circuit breaker, the rectifying transformer is subjected to voltage reduction and outputs direct current after being rectified via a rectifier, one path is connected with the traction net through the direct current feeder switch, the other path is connected with the traction net through a double-electrode high-voltage isolation switch, in addition, a high-voltage isolation switch used for realizing short circuit on a traction net uplink and a traction net downlink is arranged at the tail end of a section post line, and the traction net uplink and the traction net downlink form a ice melting loop; the discharging coil is arranged at the positive bus end of the output side of the direct current feeder switch and is provided with a high-voltage switch. The alternating current and direct current mixed traction power supply system has the advantages that the principles are simple, the function integrality is high, the operation is safe and reliable, and the like.