At present, the research and analysis method of resonant problem caused by wind turbine is complex, the calculation is cumbersome, which is mainly related to the model of line series compensation, regardless of converter or simplified converter control, so there is large error with the actual system. In order to calculate the simplicity and reduce the error, a method based on harmonic impedance measurement simulation analysis is proposed in this paper to analyze the resonant characteristics of the wind power system model. The method is simple and convenient, and avoids the collation and calculation of large-scale data, which can fully consider the influence of wind converter and reduce the error caused by simplifying the system. Taking the doubly fed induction generator with more actual installed machine as the research object, the PSCAD/EMTDC is used as the tool, and through the electromagnetic transient simulation, the model of the typical doubly fed wind generator access AC system and a practical system model of the Northwest wind farm are established. The resonant characteristics are analyzed by the above methods, and the results show that the doubly fed induction generator may exhibit capacitive impedance in the course of operation, while the AC power grid is sensual, so the whole system forms an RLC resonant circuit, which is easy to trigger resonance. This work is supported by National Natural Science Foundation of China (No. 51767001).