Wind driven generator part fault early warning method

Abstract

The invention discloses a wind driven generator part fault early warning method, which comprises the steps of: performing model training on a parallel echo state network group by calling data in a historical database, testing the accuracy of each echo state network model, and performing process statistical analysis on models satisfying the requirements so as to obtain a standard threshold of each characteristic parameter; after processing acquired different signals of all the parts of the wind driven generator, comparing each characteristic parameter in an information fusion module with a corresponding standard threshold, combining the comparison result with a corresponding weight value to give out early warning information, and adjusting the weight value of each characteristic parameter based on the practical condition of the on-site maintenance, wherein the monitored real-time data are based on the early-warning information and the on-site maintenance condition. According to the invention, health parameters of the parts of the wind driven generator are given after the monitoring results of the characteristic parameters are subjected to the fusion analysis, so that the accuracy and reliability of the early warning result are ensured.

Description

technical field [0001] The invention belongs to the field of wind power generator state monitoring, and relates to a method for early warning of wind power generator component failures. Background technique [0002] In recent years, with the uncertainty of fossil energy supply and the increasingly severe situation of energy conservation and emission reduction in various countries in the world, green renewable energy and an environmentally friendly low-carbon economy have received more and more attention. Especially in the past five years, China's wind power installed capacity has grown extremely rapidly, and it surpassed the United States at the end of 2010 to become the world's largest country in terms of wind power installed capacity. [0003] Under the premise of the rapid development of the wind power industry, a series of serious problems have also been triggered. Among them, there are even reports that dozens of wind turbines in a certain wind farm have been installed...

AI Technical Summary

Problems solved by technology

However, due to the different operating environments of wind turbines, the set thresholds are not targeted, and there is a lack of judgment on early failures of wind turbines, which can easily cause major accidents of wind turbines; wind turbines are complex rotating machinery , if only one or several measurement parameters are considered alone, it cannot accurately reflect the operating status of the wind turbine; Restricting the development of wind power as a reliable and high-quality energy source

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