Anemograph fault diagnosis method and system for wind generating sets and medium

Abstract

The invention discloses an anemograph fault diagnosis method and system for wind generating sets. The method comprises the steps that firstly, full-performance power generation data of each wind generating set in a period of time are acquired; according to the full-performance power generation data, the average wind speed V, the environment temperature mean value Tout, the power curve evaluation value K and the optimal tip speed ratio TSR_opt of each wind generating set in a period of time and the minimum wind speed value Vmin corresponding to the optimal tip speed ratio TSR_opt of each wind generating set in a period of time are obtained; and one or more of the average wind speed V, the environment temperature mean value Tout, the power curve evaluation value K, the optimal tip speed ratio TSR_opt and the minimum wind speed value Vmin serve as sensitive characteristics of an anemograph and are input into a pre-constructed anemograph fault diagnosis model, and an anemograph fault diagnosis result is obtained. The method and system have the advantages of quickly and accurately identifying anemograph 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 generating 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 the 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 anemometer faults include zero or low wind speed measurements caused by freezing, and faults caused by the anemometer itself; faults caused by the anemometer itself include: low wind speed measurement, high wind speed measurement , The wind speed measurement value is zero or a constant value, and the wind speed measurement value is abnormally high, etc. Anemometer faults lead to abnormal wind speed measurement valu...

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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