Method for suppressing power grid low-frequency oscillation of doubly-fed wind generator based on auto-disturbance rejection control
A technology of active disturbance rejection control and active disturbance rejection controller, applied in wind power generation, reducing/preventing power oscillation, electrical components, etc., can solve problems such as poor control effect, improve accuracy, reduce burden, and improve system damping Effect
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[0055] The specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0056] Step 1. Use power system simulation software to build a detailed model of the grid-connected power system including doubly-fed wind farms;
[0057] figure 1 It is a block diagram of the overall control system of the doubly-fed wind turbine. A doubly-fed wind power generation system includes a wind turbine controller, a converter controller, and a grid-connected controller. The wind turbine controller includes two coupled mechanical controls: pitch angle control and maximum power tracking control. The inverter control on the machine side adopts stator flux linkage orientation to realize decoupling and independent control of stator active power and stator reactive power. In the power outer loop, the reference value of stator active power It is given by the maximum power tracking control (MPPT) in the wind turbine control la...
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