The third frequency adjustment is the key link of the grid frequency regulation. The“admission of high capacity and rejection of small capacity”policy on thermal power causes the lack of capacity of the third frequency adjustment. Wind power brings a certain impact to the frequency stability of the power system, particularly, increasing the difficulty of the third frequency adjustment. The introduction of nuclear power into the third frequency adjustment is proposed after analyzing the characteristics of the energy generation of different forms. This paper formulates the control strategy with the core of ‘wind power decomposition, generator units grouping’ in the third frequency adjustment, after elaborating the technical feasibility and economic feasibility, and, comes to a conclusion that the participation of the nuclear in the third frequency adjustment would guarantee the stability of the frequency of the power system with this control strategy in the case of the introduction of wind power to the system, by simulation analysis.