Abstract: Since power systems with wind power are prone to frequency safety accidents, it is of great significance to study the frequency correction method of wind turbines and conventional generators under inertia and multilevel frequency modulations. A hierarchical model, a predictive control method, was proposed to reduce the randomness of wind resources, considering different wind speeds. According to the different captured wind speeds, the wind turbines were divided into low, medium, and high wind speed zones, and the corresponding deloading strategy was formulated in line with the characteristics of wind turbines. Aiming at the fluctuation of intraday frequency, the frequency correction scheduling model of wind power- conventional power- the system was established based on the cross-coupling relationship of inertia response- primary- secondary- third frequency regulation. In the third frequency regulation stage, wind turbines with increasing or decreasing output trends are given different power distributions. In the secondary frequency regulation stage, frequency regulation benefits are introduced to encourage wind power to participate in frequency adjustment. In the primary frequency regulation stage, the output capacity of different wind turbines is sorted and optimized. The inertia support under the variable virtual inertia is considered in the inertia response stage. The case study shows the proposed method can improve the intensity and precision of active participation in the frequency regulation of wind power at various time scales and ensure the safe and economic operation of the power system.