Research on the Virtual Inertia Integrated Control Strategy Based on Doubly-Fed Wind Turbine

With the large-scale wind power access to the power system, the capacity of conventional units and the proportion of output continues to decrease, while the increasing penetration of wind power caused by the decline in the system moment of inertia and frequency instability problems increased significantly, this paper establishes a dynamic response model of the frequency of the power system containing wind power, analyzes the virtual inertia of the wind turbine on the basis of the integrated control of the frequency, and proposes a new type of virtual inertia based on the regulating function integrated control strategy. control strategy, through the use of wind turbine rotor kinetic energy, effectively increase the system moment of inertia, through simulation to verify the effectiveness of the control strategy and improve the power system frequency response capability.