A method and device for diagnosing dislocation of wind turbine blade installation

Abstract

The invention discloses a method and device for diagnosing dislocation of blades of a wind turbine. The steps of the method include: S1. Acquire acceleration data of a target wind turbine running within a specified period of time, perform statistics on the acquired acceleration data, and preliminarily determine whether or not according to the statistical results. A dislocation fault may occur, if it is, go to step S2; S2. Obtain the operating parameters of the wind turbine including the acceleration data within the specified time period for frequency domain analysis, and finally confirm whether the target wind turbine has a dislocation fault according to the result of the frequency domain analysis; the device Including the dislocation initial judgment module and the dislocation confirmation module. The invention has the advantages of simple implementation method, low cost, automatic diagnosis of blade installation dislocation, and high diagnosis accuracy and efficiency.

Description

technical field [0001] The invention relates to the technical field of fault diagnosis of wind turbines, in particular to a method and device for diagnosing dislocation of blades of wind turbines. Background technique [0002] The blade is the core component of the generator set. During the installation of the wind turbine blade, it is usually installed based on the zero-degree line of the blade marked by the manufacturer before leaving the factory as the installation reference line. Problems such as poor hoisting management may eventually lead to dislocation of the blades of the wind turbine. Once the blade is dislocated, the wind turbine cannot operate normally, which will seriously affect the operational safety and reliability of the wind turbine. [0003] For the blade installation problem of wind turbines, only routine safety inspections are carried out at present, and the above-mentioned problems such as the wrong zero-degree line marking of blades are usually difficul...

AI Technical Summary

Problems solved by technology

[0002] The blade is the core component of the generator set. During the installation process of the wind turbine blade, it is usually installed based on the zero-degree line of the blade marked by the manufacturer before leaving the factory as the installation reference line. Problems such as poor hoisting management may eventually lead to misalignment of wind turbine blade installation, and once blade installation misalignment occurs, the wind turbine cannot operate normally, seriously affecting the operation safety and reliability of the wind turbine

[0003] For the installation of blades of wind turbines, at present, only routine safety inspections are carried out, and the above-mentioned problems such as wrong marking of the zero-degree line of blades are usually difficult to find through routine inspections. Manually confirm whether there is a blade installation misalignment problem. The manual inspection method is complex in operation and high in labor costs. It is impossible to locate and check out whether blade installation misalignment occurs in a timely manner, making it difficult for on-site maintenance personnel to correct faults in a timely manner, which will increase the operation of wind turbines. risk

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