Method and device for correcting wind speed measurement value of wind-driven generator

Abstract

The embodiment of the invention provides a method and device for correcting a wind speed measurement value of a wind-driven generator. The method comprises: acquiring operating data of a wind-driven generator with the same type as a target wind-driven generator within a coverage range; according to the operating data, determining a correspondence relationship between a rotating speed value of thewind-driven generator of the type and a wind speed value and a correspondence relationship between a power value of the wind-driven generator of the type and a wind speed value; and on the basis of the correspondence relationship between a rotating speed value and a wind speed value and the correspondence relationship between a power value and a wind speed value, correcting a wind speed measurement value of the target wind-driven generator. With the method and device for correcting a wind speed measurement value of a wind-driven generator, the wind speed measurement value of the wind-driven generator can be corrected to obtain an accurate wind speed value.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of wind power generation, and in particular to a method and device for correcting wind speed measurement values ​​of wind power generators. Background technique [0002] With the increasing capacity of wind power generation units, how to improve the operating efficiency of the unit and realize the conversion from wind energy to electric energy with maximum efficiency has become an important content of wind power technology research. In the control of wind turbines, the judgment of wind speed is one of the factors that determine the control effect of wind turbines. The accurate prediction of the wind speed can make the control strategy of the wind turbine more perfect and the control effect better. [0003] At present, wind turbines mainly use anemometers or ultrasonic meteorological sensors to measure wind speed values. However, in practical applications, the wind speed sensor will af...

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Problems solved by technology

However, in practical applications, the wind speed sensor will affect the accuracy of the measurement results due to the mechanical friction of the wind cup and the resistance of the concave surface of the wind cup, and the price of the ultrasonic weather sensor is relatively expensive, and the batch use will cause the cost of the wind turbine to increase rapidly. Therefore, there is an urgent need for a correction method and correction device for wind speed measurement values ​​of wind turbines, so as to obtain more accurate wind speed values ​​without increasing hardware costs.

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