The invention relates to a double-feed
wind power generating
system with
energy storage function, comprising a double-
feed type wind power generator, an alternating-current excitation power supply, a monitoring device, a grid-connection
contactor and an energy storing device, wherein one end of the grid-connection
contactor, a
stator winding of the double-
feed type wind power generator, and the alternating-current end of a
stator side converter are together connected with a load, and the other end of the grid-connection
contactor is connected with a
power grid; the alternating-current end of the alternating-current excitation power supply is connected with the energy storing device; and the monitoring device controls the communication state of the grid-connection contactor to realize the conversion of an independent running mode or a grid-connection running mode of the
system and controls the working states of a
rotor side converter and the
stator side converter according to the current running mode. When carrying out grid-connection running, the double-feed wind power generating
system can actively participate in the running and the control of an electric system to provide active power and reactive
power compensation and improve the quality of
electric energy; when carrying out independent loaded running, the double-feed wind power generating system can achieve the
dynamic balance of the active power and the reactive power at a generation side and an electric load side to ensure the safe, economic, efficient and high-quality running of wind
power equipment and the load.