Method for evaluating output characteristic of wind power plant

A technology of output characteristics and wind farms, which is applied in the field of wind farm output characteristics evaluation, can solve the problems of low accuracy and variance of wind farms, and the inability to obtain the optimal space size and optimization direction of wind turbines, and achieve high practicability and low investment. Effect
CN106707166AActive Publication Date: 2017-05-24YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
Publication Date
2017-05-24

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Abstract

The invention relates to a method for evaluating the output characteristic of a wind power plant, and the method comprises the steps: selecting a reference unit in the wind power plant, and measuring the wind power data of a cabinet front of the reference unit through a laser radar; collecting the operation data of the reference unit, and carrying out the time synchronization of the above two pieces of data; calibrating the landform of a place where a reference unit is located through a computational fluid mechanics calculation method, and correcting the wind power data according to a calibration result; obtaining a wind speed distribution probability density function following a three-parameter Weibull distribution through the corrected wind power data; calibrating an anemorumbometer of a tested unit; building an extrapolation function of other units and the tested unit; building a cabin front wind resource distribution database of each unit arrangement place of the wind power plant; importing the database into a wind power evaluation system database; and evaluating the output characteristics of each unit or the whole wind power plant. According to the embodiment of the invention, the operation conditions of the unit can be mastered and evaluated in real time, and the method can provide reliable wind power plant information for power scheduling, and is high in practicality.
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Description

technical field

[0001] The invention relates to the technical field of wind power generation monitoring, in particular to a method for evaluating the output characteristics of a wind farm. Background technique

[0002] The output characteristics of the wind farm refer to the electric power generated by the wind turbines of the current wind farm, usually the active power delivered by the current wind farm to the grid. By obtaining the wind energy resource data after the wind farm is connected to the grid, the output characteristics of a single wind turbine or the whole wind turbine in the wind farm are evaluated, and it provides a reference for wind farm benefit analysis and wind farm scheduling projects.

[0003] Existing wind farm output characteristics evaluation methods are mainly applicable to wind farms with flat terrain. In wind farms with flat terrain, since the units are arranged in a large area, the tower shadow effect or wake interference is required when estimatin...

Claims

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