Method for determining wind power curtailment at wind farm based on anemometer data of anemometer tower

A technology of abandoned wind power and determination method, which is applied in the field of determination of abandoned wind power in wind farms based on wind measurement data of wind measuring towers, and can solve problems such as limitation of calculation accuracy of model fan methods.

Active Publication Date: 2015-11-11
STATE GRID CORP OF CHINA +3
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Problems solved by technology

However, affected by factors such as terrain and landform, the output of each fan in the wind farm is not a simple linear relationship, and the calculation accuracy of the model fan method is restricted to a certain extent

Method used

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  • Method for determining wind power curtailment at wind farm based on anemometer data of anemometer tower
  • Method for determining wind power curtailment at wind farm based on anemometer data of anemometer tower
  • Method for determining wind power curtailment at wind farm based on anemometer data of anemometer tower

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Embodiment Construction

[0069] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0070] The flow chart of the method for determining the abandoned wind power of a wind farm based on the wind measurement data of the wind measuring tower provided by the present invention is as follows figure 1 shown, including the following steps:

[0071] (1) Determine the change of wind measurement data under the influence of terrain, landform and wind turbine wake; the wind measurement data includes wind speed, and determine the change of wind measurement data under the influence of terrain, landform and wind turbine wake including:

[0072] ① Determine the influence of terrain on wind speed: the disturbed boundary layer under terrain disturbance includes inner layer, outer layer and middle layer;

[0073] 1. Solve the disturbance of the wind speed in the outer layer of the boundary layer of the wind turbine, inclu...

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Abstract

The invention relates to a method for determining wind power curtailment at a wind farm based on anemometer data of an anemometer tower. The method includes the following steps: based on the anemometer data of the anemometer tower, taking factors such as terrains, land forms and wake flow of wind generation sets, into consideration, calculating the wind speeds at the highest positions of the wheel hubs of the wind generation sets, and in accordance with the power curve, obtaining theoretical power of the wind generation sets, calculating the sum of the theoretical power of all wind generation sets at the wind farm and obtaining theoretical power at the wind farm, finally respectively integrating the theoretical power at the wind farm and actual power over time, obtaining a theoretical quantity of electricity and an actual quantity of electricity, and obtaining the wind power curtailment by subtracting the theoretical quantity of electricity from the actual quantity of electricity, thus achieving an accurate calculation of the wind power curtailment at the wind farm. The method is generally applicable to all types of wind farms, and successively addresses the problem of inaccuracy of calculating wind power curtailment by using a template machine method.

Description

technical field [0001] The invention relates to a wind power generation and distribution technology, in particular to a method for determining the amount of abandoned wind in a wind farm based on the wind measurement data of an anemometer tower. Background technique [0002] Large-scale wind power bases cover a wide area and generally include multiple wind farms or groups of wind farms. Due to factors such as limited grid transmission channels and insufficient peak-shaving capabilities, wind curtailment will occur to a certain extent. A correct and scientific understanding of wind curtailment and a reasonable calculation of wind power curtailment will not only contribute to the healthy and stable development of the wind power industry, but also improve the level of grid dispatching and operation, promote the coordinated development of wind power planning and grid planning, and improve the utilization of clean energy. Rate. [0003] At present, the wind power industry mainly...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G06F19/00
CPCF03D7/00G16Z99/00Y02A90/10Y02E10/72
Inventor 冯双磊王勃赵艳青姜文玲车建峰卢静张菲靳双龙胡菊王铮杨红英马振强马锁明王若阳孙荣富崔正湃
Owner STATE GRID CORP OF CHINA
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