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Wind turbine generator load calculation method and device

A technology for wind turbine and load calculation, which is applied in calculation, wind turbine, wind turbine monitoring, etc., can solve problems such as unreasonable data of effective turbulence intensity value, and achieve the effect of reasonable load

Pending Publication Date: 2022-01-18
XUCHANG XUJI WIND POWER TECH
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Problems solved by technology

Combined with the wind frequency and turbulence intensity of each sector, the final effective turbulence intensity value has some unreasonable data

Method used

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  • Wind turbine generator load calculation method and device
  • Wind turbine generator load calculation method and device
  • Wind turbine generator load calculation method and device

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Embodiment Construction

[0051] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0052] With the development of technology and the increase of power, the blades used by large-scale wind turbines are getting longer and longer, which makes the load of the unit more and more sensitive to the aerodynamic performance of the turbulence intensity of wind resources. The turbulence intensity of the wind turbine generator at high wind speed has a greater impact on the ultimate load of the unit and components, a...

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Abstract

The invention discloses a wind turbine generator load calculation method and device, and the method comprises the following steps: obtaining the turbulence intensity data of each site of a wind turbine generator at different wind speeds, and extracting the envelope turbulence intensity corresponding to different wind speeds; according to the envelope turbulence intensity of the preset wind speed interval, fitting the turbulence intensity data in the preset wind speed interval, and obtaining fitting turbulence intensity; and calculating a load value of the wind turbine generator according to the fitting turbulence intensity, and judging whether the load value is in a normal range by combining a design load of the wind turbine generator. The invention comprises acquiring turbulence intensity data of each machine site of a wind turbine generator at different wind speeds, extracting envelope turbulence intensity, carrying out data fitting and calculating a load value of the wind turbine generator, replacing a traditional calculation method for carrying out safety recheck on each machine site of a wind field, and dividing the maximum recheck turbulence intensity by using a reasonable wind speed interval. Therefore, load calculation is carried out, and the load is more reasonable.

Description

technical field [0001] The invention relates to the technical field of wind power control, in particular to a method and device for calculating the load of a wind turbine. Background technique [0002] When conducting safety review of large-scale wind turbines, it is necessary to use wind resource data of wind farms to carry out load calculations. The formation of wind resources is the result of the combined effects of various complex natural factors, and the assessment of the turbulence intensity of wind resources directly affects the ultimate load and fatigue load of wind turbines. Therefore, the analysis and evaluation of wind resources and wind conditions is particularly important. Starting from the current technology, after the wind measurement data is output from the wind resource assessment software, the wind resource turbulence intensity, annual average wind speed, air density and other factors of the wind farm are directly combined with IEC / GL specification for lo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/28G06Q10/04G06Q50/06F03D17/00G06F111/10
CPCG06F30/28G06Q10/04G06Q50/06F03D17/00G06F2111/10
Inventor 扶麟刘晓辉冯俊恒郭敏
Owner XUCHANG XUJI WIND POWER TECH
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