Primary frequency modulation coordination control method for wind turbine generator set

Abstract

The invention discloses a primary frequency modulation coordination control method for a wind turbine generator set, and the method comprises the following steps: 1, measuring the system frequency andfrequency change rate of the grid-connected point in real time; 2, performing load shedding control of the set through pitch changing, so that the wind turbine generator set has stable active frequency modulation capacity under different wind conditions; 3, introducing an additional torque compensation link through rotor kinetic energy control, and enabling the wind turbine generator set to havefast active response characteristics; 4, rotor kinetic energy and power backup coordinated control achieving the rapid and continuous response of the wind turbine generator set to the system frequency change trough the rotor kinetic energy and power standby coordination control. The method is applicable to each wind speed, and can achieve the same standby capacitor under different wind speeds, sothat the primary frequency modulation capability of a fan is no longer restricted by the wind speed.

Description

technical field [0001] The invention belongs to the technical field of grid connection of wind turbines, and in particular relates to a primary frequency modulation coordination control method of wind turbines. Background technique [0002] Wind energy, as a sustainable new energy source, has attracted more and more attention from all over the world due to its non-pollution and renewability. In recent years, my country's wind power industry has developed rapidly, and the installed capacity of wind power has continued to increase. As more and more large-capacity wind farms are directly integrated into the grid, the interaction between wind power and the grid has become more and more complicated. [0003] In wind power generation technology, the variable-speed constant-frequency wind turbine is the main model in commercial operation today. The variable-speed constant-frequency wind turbine is connected to the grid through a converter, so that the wind rotor rotor is decoupled ...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above problems, the present invention provides a wind turbine primary frequency modulation coordinated control method, which improves the active power response speed of the wind turbine, and at the same time reduces the problems of the traditional power backup control method, which has too much reserved power and poor economic efficiency.

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