Wind turbine generator operating power curve standard-reaching conformity evaluation method

A technology for operating power and wind turbines, which is applied in computer components, electrical digital data processing, character and pattern recognition, etc., and can solve the problems of not being able to better analyze the difference between the actual operating power curve and the standard power curve.

Active Publication Date: 2019-08-02
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology

[0004] The present invention provides a method for evaluating the conformity of the operating power curve of wind turbines. The problem with the difference between standard power curves

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  • Wind turbine generator operating power curve standard-reaching conformity evaluation method
  • Wind turbine generator operating power curve standard-reaching conformity evaluation method
  • Wind turbine generator operating power curve standard-reaching conformity evaluation method

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Embodiment Construction

[0049] The power curve can directly reflect the operating status of the wind turbine. The power curve can be roughly divided into three parts according to the cut-in wind speed, the wind speed at full power, and the cut-out wind speed in the wind speed and power data to be evaluated for a certain wind turbine model provided by the manufacturer. According to the operating status of the wind turbine, the power curve is mainly composed of four sub-regions: the starting area of ​​the wind turbine, the constant power coefficient area, the constant power area, and the constant speed area, such as figure 1 Shown. The curve shape of different areas is affected by the corresponding main control components. Therefore, the division and overall calculation of the compliance degree of the power curve should be carried out.

[0050] 1) Standardized calculation method for historical data

[0051] The design calculation of the power curve in the present invention is mainly the calculation of wi...

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Abstract

A wind turbine generator operation power curve standard reaching conformity evaluation method comprises the following steps of 1, establishing a standard power curve function for the wind speed and power data table of the model of a wind turbine generator to be evaluated; 2, cleaning the historical operation second-level wind speed and power data of the model of the wind turbine generator to be evaluated, and establishing an operation power curve function; and 3, performing coincidence coefficient calculation on the standard power curve function model in the step 1 and the operation power curve function model in the step 2. A main body structure of a whole power curve is divided into a fan starting stage, a power coefficient constant stage, a power constant stage and a rotating speed constant stage; on the premise of clarifying the relationship between the regions of the wind turbine generator, the design evaluation method of the regions is respectively provided, and meanwhile, the design calculation flow chart of the whole wind turbine generator is designed, so that the preliminary evaluation design of the wind turbine generator is realized, and a basis is provided for subsequentnumerical simulation and experimental verification.

Description

Technical field [0001] The content of the present invention relates to a method for evaluating compliance with the operating power curve of a wind turbine, which can realize the overall preliminary design evaluation of the wind turbine and can be used for the performance evaluation of the wind power system. Background technique [0002] The good power generation performance of wind turbines is a decisive factor to ensure the production and operation management and development strategy planning of wind power enterprises. The power curve is an important indicator to describe the operating performance of wind turbines. However, due to the influence of factors such as temperature, air pressure, blade pollution and the characteristics of the turbine itself, the power curves formed by different wind farms, different turbines, and different times are different. Therefore, analyzing the difference between the actual operating power curve and the standard power curve and understanding the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06K9/62
CPCG06F30/20G06F18/23213
Inventor 李媛黄秋娟陈雷赵丽军杨俊友邢作霞
Owner SHENYANG POLYTECHNIC UNIV
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