As the proportion of wind power in the power system increases, the uncertainty of wind power output makes the frequency stability problem of high-proportion wind power power systems more and more serious. Traditional units need to reserve frequency regulation reserve capacity to cope with the frequency fluctuation caused by load and wind power uncertainty. Resulting in severe wind curtailment during the load valley period. The variable speed wind turbine can effectively relieve the frequency regulation pressure of traditional units by participating in the frequency regulation of the power grid through the operation mode of load shedding. To this end, based on the over-speed control and pitch angle control of variable speed wind turbines, a control strategy for load-shedding operation of wind turbines under full wind conditions is proposed. Secondly, the optimal dispatch model of the wind-thermal-storage joint system in which the wind power-energy storage participates in frequency regulation is constructed, and the system frequency regulation reserve constraints are set based on the opportunity constraints, considering the operation mode of wind power dynamic load shedding participating in frequency regulation, the load shedding rate of wind power is optimized. Finally, it is verified by an example that the method proposed can effectively promote the consumption of wind power and improve the economy of system operation.