Automatic parallel device for two-section station direct-current bus

The utility model discloses an automatic parallel device for a two-section station direct current bus, which is connected between two sections of direct current buses and comprises two switching powersupply modules and four circuit breakers. Wherein the input end of the first switching power supply module is connected to an I-section direct-current bus through a circuit breaker QF1, and the output end of the first switching power supply module is connected to an II-section direct-current bus through a circuit breaker QF3, and the first switching power supply module is used for obtaining a power supply from the I-section direct-current bus and outputting the power supply to the II-section direct-current bus when the voltage of the II-section direct-current bus is lower than a preset value;and the input end of the second switching power supply module is connected to the II-section direct-current bus through a circuit breaker QF2, and the output end of the second switching power supplymodule is connected to the