In order to further improve the ability of dual-feed generator to participate in frequency regulation of power system, so that it can participate in the frequency of power system at the same time, through the analysis of the synchronous generator to participate in the secondary FM process, the design of dual-feed generator additional pitch angle controller, can simulate the process of synchronous generator operating frequency characteristic curve, and can actively respond to automatic power generation control signal to participate in secondary FM. The power control coefficient is automatically distributed according to the state of the wind farm and the synchronous generator in the system. The simulation results show that the control strategy can make the wind farm participate in the first and second FM of the power system more effectively, and improve the FM capability of the whole system.
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