Wind turbine yaw control method and system for a wind turbine farm
A technology for wind turbines and power plants, applied in the control of wind turbines, wind power generation, wind turbines, etc., can solve the problems of difficult to accurately detect wind turbines, free airflow turbulent profiles, etc.
Active Publication Date: 2020-08-14
YUANJIAN WIND POWER JIANGYINENVISION ENERGY CO LTD
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Problems solved by technology
It is difficult to accurately detect whether a wind turbine is subject to wake effects, especially if the relative free flow has a very turbulent profile
Method used
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[0125] figure 1 An exemplary embodiment of a wind turbine park is shown comprising a plurality of individual wind turbines 1 , here only four wind turbines are shown. Each wind turbine 1 includes a wind turbine tower 2 and a nacelle 3 arranged at the top of the wind turbine tower 2, wherein the yaw system 4 is used to yaw the nacelle 3 relative to the wind turbine tower 2, and make it yaw relative to the wind direction to the yaw angle. The nacelle 3 is rotatably connected to a hub 5 and to a number of wind turbine blades 6 , here three wind turbine blades are shown. The wind turbine blades 6 are connected to the hub 5 via a pitch system 7 arranged to pitch the wind turbine blades 6 to a pitch angle relative to the wind direction.
[0126] Each wind turbine 1 further comprises a local control unit 8, at least one operational sensor 9 and at least one wind sensor 10, such as a LIDAR unit. The running sensor 9 and the wind sensor 10 are electrically connected to the local con...
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A system and method thereof for controlling wind turbines in a wind turbine farm are provided, wherein each wind turbine (1) comprises a yaw system (4) for yawing the nacelle (3) into a yaw angle. A remote control unit (11) collects operating data and wind data from the wind turbine farm and stores the measurements in a database (12). The remote control unit (11) uses the long term data (21) and, optionally, other factors to divide the wind turbines (1) into groups (24). A collective yaw angle command (26) is generated based on the short term data (25) of a selected group and, optionally, transmitted to a local control unit (8) in each wind turbine (1) of a selected group. The remote control unit (11), or the local control unit (8), determines if predetermined conditions exist or not. If such predetermined conditions exist, then the selected group is yawed according to the collective yaw angle command (26). If not, then the selected group is yawed according to individual yaw angel commands (27). Thus, the system and method can reduce the overall energy loss and the overall yaw actions of the wind turbines and can also prevent extreme loadings of the selected wind turbines.
Description
technical field [0001] The present invention relates to a system for controlling wind turbines of a wind turbine park, wherein the wind turbine park comprises a plurality of wind turbines arranged relative to each other, each wind turbine being connected to a remote control unit by a communication link, and comprising a A yaw system that yaws the nacelle to a yaw angle, where the remote control unit is arranged to control the yaw movement of the wind turbine. [0002] The invention also relates to a method for controlling wind turbines of a wind turbine park comprising a plurality of wind turbines arranged relative to each other, each wind turbine communicating with a remote control unit and yawing a nacelle to a Yaw angle, where a remote control unit controls the yaw motion of the wind turbine. Background technique [0003] Modern wind turbines are often co-arranged in wind turbine parks, wherein the individual wind turbines are placed relative to each other in a preset pa...
Claims
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IPC IPC(8): F03D7/00
CPCF03D7/00F03D7/0204F03D7/048F05B2270/32F05B2270/321Y02E10/72
Inventor 童磊陈林张锋卡斯滕·海恩·韦斯特卡德
Owner YUANJIAN WIND POWER JIANGYINENVISION ENERGY CO LTD