The use of wind power has grown rapidly in recent years. Wind power is a clean source of energy, but can have negative impacts on the distribution grid. The influence of large-scale wind power integration on the safeand stable operation of a power system can not be ignored.It is necessary and urgent to achieve grid adaptability forwind turbines in China. Using a 35 kV/6 MVA grid simulator,the performance of a grid is investigated by simulation.Typical grid disturbances such as voltage deviation,frequency fluctuation, voltage unbalance, and distortion can be simulated. A grid adaptability testing methodologywas developed and applied to a doubly fed wind turbine with a focus on analyzing real test data to as certain itsthree-phase voltage unbalance adaptability, which was successfully demonstrated. The methodology can also beused to guide other grid adaptability tests.