A kind of wind power generation system control method
A technology of a wind power generation system and control method, which is applied in the control of wind turbines, monitoring of wind turbines, wind energy generation, etc., can solve the problems that fluctuations cannot be completely digested by themselves, the output power of the system fluctuates, and the efficiency of the system is reduced. The effect of frequent pitch action, smooth output power, and protection of pitch system
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Embodiment 1
[0044] Refer to attached figure 1 and 2 , a high-efficiency wind power generation system, which includes a lidar wind measuring instrument placed on the nacelle (not shown in the figure), and a mechanical-hydraulic (secondary adjustment) hybrid transmission system placed in the nacelle. The mechanical-hydraulic (secondary adjustment) hybrid transmission system includes an impeller 1 and a pitch mechanism, a speed-increasing planetary gear train 2, a split-merge device 30, a synchronous generator 4, a speed-regulating hydraulic system 50 and a secondary-regulating hydraulic system 60 .
[0045] Wherein, the impeller 1 is connected with the input shaft of the speed-increasing planetary gear train 2 . The impeller 1 captures wind energy and drives the speed-up planetary gear train 2 to rotate, increasing the output speed of the speed-up planetary gear train 2 to a certain value. The speed-increasing planetary gear train 2 transmits energy to the synchronous generator 4 through...
Embodiment 2
[0052] A high-efficiency wind power generation system control method.
[0053] Refer to attached image 3 , the laser radar anemometer measures the wind speed and wind direction information at a distance L in front of the impeller, and acquires a data at a fixed time (for example, 1s or less) and sends it back to the controller at a sampling time determined by the system sampling rate. Sampling data is set in the controller with M data storage queues (N data in each column), and the data enters the queues according to the principle of first in first out. The next step can only be performed after the data in the array is full.
[0054] Refer to attached Figure 4 According to the source of wind measurement error, spatial weighted average, azimuth error, measurement average error, white noise, etc., preliminary processing is performed on the data, and the continuous fluctuating wind speed curve is obtained by moving average fitting.
[0055] Refer to attached Figure 5 , per...
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