The utility model discloses an energy storage type power quality regulator for a wind power generation system. The energy storage type power quality regulator for the wind power generation system comprises a three-phase full-bridge DC-AC converter, a three-phase half-bridge DC-AC converter, a bidirectional DC-DC converter and an energy storage device, one outgoing line terminal of the alternating current port of each phase of the three-phase full-bridge DC-AC converter is connected with the outgoing line terminal of the corresponding phase in a wind generation set while the other outgoing line terminal is connected with the connecting terminal of the corresponding phase in the low-voltage side of a boosting transformer, the direct current port of each phase of the three-phase full-bridge DC-AC converter is connected with the direct current port of the three-phase half-bridge DC-AC converter, the three-way alternating current port of the three-phase half-bridge DC-AC converter is connected with the connecting port of the low-voltage side of the boosting transformer, and the energy storage device is connected with the direct current port of the three-phase half-bridge DC-AC converter through the bidirectional DC-DC converter. The energy storage type power quality regulator for the wind power generation system is capable of smoothing the wind electricity power fluctuation and improving the low voltage ride through capability of the wind electricity.