Yawing optimization method of large wind turbine generator system under condition of strong wind
A technology of wind turbines and optimization methods, applied in the control of wind turbines, wind turbines, wind power generation, etc., can solve problems such as loss of power generation, slow yaw speed, etc., reduce downtime, and be widely used. Effect
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[0022] Since the power of the unit and the wind speed are related by the third power, that is
[0023]
[0024] Among them, P is the power captured by the wind rotor, ρ is the air density, A is the swept area of the wind rotor, v p is the actual wind speed received by the wind rotor. When there is a deviation between the position of the nacelle and the wind direction, the angle between the position of the nacelle and the wind direction is called the windward error ξ:
[0025] ξ=θ m -θ n (2)
[0026] Among them, θ m is the wind direction, θ n is the position of the nacelle, ξ is the error against the wind, such as figure 1 shown.
[0027] Due to the existence of the included angle, power generation loss will occur, and the wind rotor actually receives the wind speed v p The relationship with the wind speed v of the wind wheel is as follows:
[0028] v p =v cosξ (3)
[0029] Therefore, the actual power P of the wind rotor is:
[0030]
[0031] According to t...
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