Continuous switching power supply device for aircraft ground power supply

A continuous switching power supply device for an aircraft ground power supply includes a contactor I, a plug, a relay I, a relay II, a switch, a power supply on the aircraft, a contactor II, a main bus bar and a socket. An A end of the contactor I is connected to a positive end of the ground power supply; a B end of the contactor I is connected to the positive end of the ground power supply and connected to a D end of the plug; a C end of the contactor I is connected to the C end of the plug; the D end of the contactor I is connected to the B end of the plug; the A end of the plug is connected to a negative end of the ground power supply; the A, B, C, and D ends of the plug respectively correspond to the A, B, C, and D ends of the socket; and the A end of the socket is in ground connection. The continuously switching power supply device for the aircraft ground power supply is simple in structure, is reliable in operation, is low in cost, has no adverse interference to the aircraft, well achieves continuous s