Anemometer fault diagnosis method, system and medium for wind turbine

Abstract

The invention discloses an anemometer fault diagnosis method and a diagnosis system of a wind power generating set. Firstly, the full performance power generation data of each wind power generating set within a period of time is obtained; Average wind speed V, average ambient temperature T out , the power curve evaluation value K, the optimal tip speed ratio TSR_opt, and the minimum wind speed value V corresponding to the optimal tip speed ratio TSR_opt min ; The average wind speed V, the average ambient temperature T out , power curve evaluation value K, optimal tip speed ratio TSR_opt or minimum wind speed value V min One or more of them are used as the sensitive features of the anemometer, input into the pre-built fault diagnosis model of the anemometer, and the fault diagnosis result of the anemometer is obtained. The invention has the advantages of fast and accurate identification of anemometer faults and the like.

Description

technical field [0001] The invention mainly relates to the technical field of wind power generation, in particular to a fault diagnosis method, system and medium of an anemometer of a wind power generator set. Background technique [0002] The wind turbine monitors the wind speed in real time through the anemometer, and realizes the cut-in and cut-out control of the unit according to the wind speed. In order to realize real-time monitoring of wind speed, the anemometer needs to be in working condition all the time, so the possibility of failure is high. The faults of the anemometer include the zero or low measured value of the wind speed caused by freezing, and the fault caused by the anemometer itself; the faults caused by the anemometer itself include: the measured value of the wind speed is low and the measured value of the wind speed is high. , the wind speed measurement value is zero or a constant value, the wind speed measurement value is abnormally high, etc. The ab...

AI Technical Summary

Problems solved by technology

Anemometer faults lead to abnormal wind speed measurement values, which will affect the cut-in and cut-out control of the wind turbine, resulting in loss of power generation of the unit

In addition, if the wind speed measurement value is too high or abnormally high, it will also cause the power curve to deteriorate, which will affect the power curve assessment and evaluation of the unit; if the wind speed measurement value is too low, it may also cause the unit to fail to cut out in time. , thus affecting the operation safety of the unit and the service life of the unit

However, the measured value of the wind speed is zero or a constant value, which will lead to an abnormal increase in power near the wind speed value of zero or a constant value in the measured power curve.

The wind speed is random and changeable, it is difficult to accurately and effectively identify the failure of the anemometer

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