The invention discloses a control method and model for participation of a wind generating set in primary frequency modulation of a power grid. The method comprises the following steps: rotor inertia response control is added into a control system of the wind generating set, when the frequency of a power system is reduced, a rotor inertia response controller temporarily compensates unbalanced powerby changing the power output reference value of an inverter, the temporarily increased power regulation quantity on a unit power instruction and the rotating potential energy released by the rotor ofthe wind turbine generator, so that the fluctuation energy of the frequency is temporarily reduced. The power output of the wind generating set is recovered to the state before disturbance after rotor inertia response control; an active power controller is added to enable the wind generating set to run under the non-optimal wind energy capture working condition by increasing the blade pitch angleof the wind generating set, and required wind power standby capacity can be provided, so that the balance of power output and electrical load of the wind generating set is realized, and the frequencyfluctuation of an electric power system is reduced.