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Method of controlling a wind generation device

A wind power generation device and wind technology, which are applied in the control of wind turbines, wind energy power generation, wind turbines, etc., can solve the problems of increasing turbulence intensity, increasing wind speed standard deviation, and wind speed fluctuations.

Inactive Publication Date: 2013-03-13
NORDEX ENERGY
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Problems solved by technology

Due to the inhomogeneous nature of the ground around said location, large fluctuations in wind speed will occur, which will lead to an increase in the standard deviation σ of the wind speed
Therefore, the turbulence intensity is increased by this

Method used

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  • Method of controlling a wind generation device
  • Method of controlling a wind generation device
  • Method of controlling a wind generation device

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Embodiment Construction

[0022] Figure 1 shows the turbulence intensity as a line 10 as a function of the wind direction, measured for one location of the wind power plant. In the selected representation, the distance of a point on line 10 from the center represents the intensity of turbulence present in that wind direction. Also drawn in Figure 1 is a circle 12, which presets the maximum turbulence intensity. The maximum turbulence intensity is independent of the wind direction, resulting in a circle, therefore, at the same distance from the center of the representation in each direction. In the area 14 shown shaded, the turbulence intensity 10 present at this location is greater than the maximum value 12 of the turbulence intensity. The intersection of the turbulence intensity 10 and the maximum value of the turbulence intensity defines two wind directions 16 , 18 which define a sector 20 of critical wind directions. In general, the sector of the critical wind direction is considered to be in an e...

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Abstract

The method involves providing one or multiple sectors (20) in a controller from critical wind directions (16,18). The controller generates a control unit for the operating control system, in order to reduce the desired value of the electrical size which is produced, if the measured wind direction lies in the sector of critical wind directions. A determined parameter exceeds a pre-determined maximum value for the parameter.

Description

technical field [0001] The present invention relates to a method of operating a wind power plant using an operational management that presets desired values ​​of electrical variables to be produced of the wind power plant. Background technique [0002] From "Erneuerbare Energien 5 / 2006", pages 39 to 43, it is known that the turbulence intensity depends on the location and time point of the measurement. Based on the mean value of the wind speed, the turbulence intensity is defined as the standard deviation σ of the wind speed. As a measure for fluctuations in wind speed, the turbulence intensity is determined by the terrain around the location and the like. The higher the surface roughness around the location, the higher the turbulence intensity. Due to the uneven nature of the ground around the location, large fluctuations in wind speed can occur, which can lead to an increase in the standard deviation σ of the wind speed. Therefore, the turbulence intensity is thereby in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/02
CPCF05B2270/107Y02E10/723F05B2270/1011F03D7/042F03D7/0292F05B2270/321F05B2270/1016F05B2270/32F05B2270/20F05B2270/1033F03D7/0224F05B2270/328F05B2270/109Y02E10/72
Inventor G·施密特
Owner NORDEX ENERGY
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