The wind power penetration of power system is increasing rapidly, while the wind abandoning phenomenon is getting more serious. The lack of thermal power and hydropower's peaking and frequency regulation ability is one of the main reasons to restrict the utilization efficiency of wind power. Under this circumstance, the wind generator vector control, rotor kinetic energy control strategy principle and rotor kinetic energy control strategy process are analyzed in this paper.Firstly, based on the analysis of the range of wind generator operating area and rotor kinetic energy control, a frequency regulation scheme is proposed to match the wind generator's frequency control capability. According to the running condition, DFIGs are controlled reasonably to participate in system frequency regulation. Control parameters could be optimized by the wind speed, which can effectively give full play to the frequency regulation ability of wind power without any additional investment, avoiding the risk of wind generators excessive participating in frequency regulation and improving the operational efficiency of wind power. Finally, the validity of the scheme are verified by a simulation in DIgSILENT/PowerFactory.