In this paper, a comprehensive inertial control method is proposed, which combines the enhanced overspeed control and load reduction with the drop control in virtual inertial control. Depending on the system frequency difference, by entering the variable load rejection coefficient, the load rejection control module can quickly generate power reference values and transmit power tracking curves, so that wind turbines have power frequency response characteristics. This effect of control parameters on the equivalent inertia of electrical systems is analyzed, and a specific control model is designed. The simulation results show that the integrated inertial control method proposed in this document enables the wind farm composed of DFIG to respond to system frequency changes more quickly and efficiently.
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