AC flexible power distribution system based on battery energy storage and electric energy direct supply

The invention discloses an alternating-current flexible power distribution system based on battery energy storage and electric energy direct supply. A supercapacitor and storage battery hybrid system serves as an energy storage system of alternating-current flexible power distribution, and the supercapacitor and storage battery hybrid system is composed of a storage battery set, a supercapacitor set, a DC/DC converter and a load. The super capacitor bank and the storage battery pack transmit energy to the load together, the super capacitor bank is connected with the storage battery pack through the DC/DC converter, energy flow from the super capacitor bank to the storage battery or the load is achieved by controlling the DC/DC converter, and the charging and discharging process of the storage battery pack is optimized. According to the invention, the hybrid system of the super capacitor and the storage battery is used as an AC flexible power distribution energy storage system, so that the number of discharge