Wind power plant low-efficiency draught fan recognition method
An identification method and low-efficiency technology, applied in the direction of wind power generation, wind engine, wind engine control, etc., can solve the problems of high cost and difficulty in accurately monitoring abnormal wind turbines for power generation, and achieve low cost and high accuracy , to avoid the effect of the difference in wind speed
Active Publication Date: 2015-07-22
吴江科技创业园管理服务有限公司
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Problems solved by technology
Usually, there are as many as several hundred status quantities for wind turbine monitoring, and most of the status quantities reset quickly within a few seconds. These hundreds of status quantities are not completely independent, but interfere with each other, so it is difficult to use conventional monitoring methods Accurately realize the monitoring of abnormal wind turbines generated by wind turbines, and the implementation cost is also high
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[0029] The embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings, but the present embodiments are not intended to limit the present invention, and any similar structures and similar changes of the present invention should be included in the protection scope of the present invention.
[0030] Such as figure 1 As shown, a method for identifying low-efficiency wind turbines in a wind farm provided by an embodiment of the present invention is characterized in that the specific steps are as follows:
[0031] 1) Obtain the wind speed of the anemometer tower of the wind farm, denoted as Vc;
[0032] 2) Set all wind turbines in the wind farm whose power generation exceeds 5% of the design capacity as the wind turbines to be tested, and obtain the 30-second average wind speed of each wind turbine to be tested;
[0033] 3) All the wind turbines to be tested whose 30-second average wind speed is greater than 0.5 time...
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The invention discloses a wind power plant low-efficiency draught fan recognition method and relates to the technical field of wind power. The wind power plant low-efficiency draught fan recognition method solves the technical problems for reducing the recognition cost and improving the recognition precision. The method includes the steps of setting up an initial recognition draught fan set according to the wind speed of a wind measurement tower and the average wind speed in 30 seconds of each draught fan to be measured, calculating an initial average wind speed in 30 seconds of the initial recognition draught fan set, setting up a secondary recognition draught fan subset according to the calculation result, calculating a secondary average wind speed in 30 seconds of the secondary recognition draught fan subset, sequentially calculating a normalized power average value of the secondary recognition draught fan subset, a normalized theory generated power value of each draught fan in the secondary recognition draught fan subset and a normalized generated power value of each draught fan in the secondary recognition draught fan subset according to the secondary average wind speed in 30 seconds of the secondary recognition draught fan subset and the real-time generated power of each draught fan, and recognizing low-efficiency draught fans in the secondary recognition draught fan subset according to the calculation results. The method is suitable for recognizing the low-efficiency draught fans in a wind power plant.
Description
technical field [0001] The invention relates to wind power technology, in particular to a technology for identifying a low-efficiency fan in a wind farm. Background technique [0002] During the normal operation of the wind turbines in the wind farm, the power generated is related to the wind resources of the wind farm, the location of the wind farm, and the operating status of the wind turbine subsystems. power to the wind turbine. [0003] The wind turbine has more than a dozen subsystems, each subsystem is equipped with various sensors for state monitoring, which can better diagnose the running state of the wind turbine, and these independent operating states are more complicated to determine the power generation status of the wind turbine. When the wind turbine subsystems can operate normally, but the power generated by the wind turbines cannot normally reflect the current state of wind resources, it is necessary to analyze the power generation of the wind turbines to f...
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IPC IPC(8): F03D7/00
CPCY02E10/723Y02B10/30Y02E10/72
Inventor 李昌徐宏飞张溯宁
Owner 吴江科技创业园管理服务有限公司
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