In case of fault in the tie line of wind farm

the synchronous reclosing condition is often not met due to its small capacity and weak automatic regulation ability of voltage and frequency

causing failure of reclosing operation of the wind farm side. As for this problem and with certain wind farm in Xinjiang as an example

the voltage of each phase of busbar for tie line of wind farm is deduced theoretically with combination of the operation feature of wind farm

and the reason for the failure of threephase reclosing operation in the tie line fault of wind farm is obtained. The simulation model of gridconnected wind turbine is established

the terminal voltage drop and frequency fluctuation of wind turbine in the two-phase fault and three-phase fault of the tie line of wind farm is analyzed and verified by the simulation

and the adaptability of three-phase reclosing operation in the tie line fault of wind farm is analyzed systematically.