MMC-based direct current system for station factory

The utility model discloses an MMC-based direct current system for a station factory, which comprises a rectification part and an inversion part, the rectification part comprises a storage battery, anMMC type rectifier, a fuse and an isolation switch, and the inversion part comprises an MMC type inverter and a breaker. Wherein the MMC type rectifier is provided with an alternating-current power supply by two sections of alternating-current buses, the MMC type rectifier is used for converting the alternating-current power supply into a direct-current power supply, supporting the voltage of thedirect-current bus and supplying power to a station/plant direct-current load, and the storage battery is connected with the direct-current bus through the fuse and the isolating switch; and the MMCtype inverter is connected to the direct current bus. According to the utility model, the electric energy quality of direct-current power supply can be ensured without a filtering link, and a three-phase alternating-current pow