Abstract: Under the scenario of large-scale wind power grid connection, if the traditional method of cutting off thermal power units is still adopted for the emergency control of power system transient stability, the maximum number of machines that can be provided by thermal power units will be reduced due to the reduction of grid-connected capacity of thermal power units. Therefore, it is difficult to ensure that the system can be restored to a stable operation state after power cut-off. And after the removal of thermal power units, system inertia is further reduced, which will bring a greater cost of machine cutting. Consequently, an emergency control strategy for transient stability including wind power cut-off measurement must be considered. We proposed an emergency regulation strategy for high-proportion DFIG grid-connected power system based on network energy. First, we calculated the branch stability index, judged the transient stable state, and identified the fragile cut set. Secondly, we constructed a branch potential energy sensitivity index, and established the relationship between stability of critical cut set branch and active power of generators. Thirdly, we selected a control object through sensitivity index, and designed a wind-thermal power coordinated cutting strategy after taking the minimum cutting amount as the goal and presetting the cutting set stability and cutting margin as constraints. Finally, through the simulation of single-machine system, we analyzed the influence of wind turbine access on network energy distribution in transient process.Through the simulation of ten-machine system, the proposed cutting strategy which can achieve quantitative control of DFIG grid-connected power system is verified.