MULTI-END OFFSHORE WIND POWER FLEXIBLE DIRECT CURRENT AND ENERGY STORAGE COOPERATIVE GRID-CONNECTED SYSTEM AND CONTROL METHOD THEREOF

A multi-end offshore wind power flexible direct current and energy storage cooperative grid-connected system and a corresponding control method. The system comprises a plurality of offshore wind power clusters (1), a plurality of offshore converter stations (2) connected in parallel, and an onshore converter station (4) connected to the offshore converter stations (2); each offshore converter station (2) is directly connected to an output end of the corresponding offshore wind power cluster (1); direct current output ends of the offshore converter stations (2) are connected in parallel; the onshore converter station (4) is connected to an alternating current main power grid (5); an energy storage subsystem (6) is connected to the onshore converter station (4), and comprises a plurality of energy storage units, which are used for stabilizing the offshore wind power output fluctuation. A branch-type multi-end offshore wind power flexible direct current power transmission subsystem integrates a plurality of dist