中国电机工程学报2016，Vol.36Issue(6)：1643-1649,1777,8.DOI:10.13334/j.0258-8013.pcsee.2016.06.020
风电轴承性能退化建模及其实时剩余寿命预测
Performance Degradation Model and Prediction Method of Real-time Remaining Life for Wind Turbine Bearings
摘要
Abstract
ABSTRACT:In order to know about the remaining life of wind turbine bearings, the performance degradation model and real-time remaining life prediction method of wind turbine bearings were proposed based on temperature characteristic parameters. Firstly, because the uncertainty of wind speed and wind direction results in the temperature of wind turbine bearings in a wide range, by using the method of the moving average method, the relative temperature data of wind turbine bearings were smoothed, and the temperature trend data of wind turbine bearings were obtained. Secondly, considering the degradation speed of bearings change with the operational time and external uncertain factors, the performance degradation model was established based on the Wiener process, and the parameters of performance degradation model were obtained by using the method of maximum likelihood estimation. Thirdly, according to the failure principle of the first temperature monitoring value beyond the warning threshold, the remaining life prediction model of wind turbine bearings was established based on the inverse Gaussian distribution. Finally, taken as an example of the remaining life prediction of a practical generator rear bearing, the process of performance degradation and real-time remaining life prediction were demonstrated. By comparison with the practical remaining life,results show that the proposed model and prediction method is correct and effective.关键词
风电轴承/性能退化/Wiener过程/寿命预测Key words
wind turbine bearings/performance degradation/Wiener process/remaining life prediction分类
动力与电气工程引用本文复制引用
胡姚刚,李辉,廖兴林,宋二兵,欧阳海黎,刘志祥..风电轴承性能退化建模及其实时剩余寿命预测[J].中国电机工程学报,2016,36(6):1643-1649,1777,8.基金项目
国际科技合作专项资助(2013DFG61520)；国家自然科学基金项目(51377184)；重庆市重点产业共性关键技术创新专项(cstc2015zdcy-ztzx0212)；重庆市研究生科研创新项目资助(CYB14014)。 International Science & Technology Cooperation Program of China (2013DFG61520) （2013DFG61520）
National Natural Science Foundation of China (51377184) （51377184）
Key technology innovation project of major industry of Chongqing (cstc2015zdcy-ztzx0212) （cstc2015zdcy-ztzx0212）
Chongqing Graduate Student Research Innovation Project (CYB14014) （CYB14014）
