基于信号模型与阶次分析的风力发电机组齿轮箱故障诊断  

Fault Diagnosis of Wind Turbine Gearbox based on Signal Model and Order Analysis

作　　者：田家彬 聂延艳 陈孝旭 徐浩 李方义[2] 王黎明 Tian Jiabin;Nie Yanyan;Chen Xiaoxu;Xu Hao;Li Fangyi;Wang Liming(CRRC Shandong Wind Power Co.,Ltd.,Ji'nan 250022,China;Key Laboratory of High Efficiency and Clean Mechanical Manufacture(Ministry of Education),School of Mechanical Engineering,Shandong University,Ji'nan 250061,China)

机构地区：[1]中车山东风电有限公司,山东济南250022 [2]山东大学机械工程学院高效洁净机械制造教育部重点实验室,山东济南250061

出　　处：《机械传动》2022年第2期91-95,共5页Journal of Mechanical Transmission

基　　金：国家重点研发计划项目(2020YFB1711600)。

摘　　要：针对传统的频谱分析方法在非平稳工况下导致的"频谱模糊"现象,利用信号模型和阶次分析的方法对风电机组齿轮箱进行了故障诊断研究。建立了非平稳工况下齿轮箱高速级的振动信号模型,推导了其时频谱及阶次谱结构,利用阶次分析的方法分析了振动信号的阶次谱,提取了齿轮故障特征。最后,利用真实风场齿轮箱振动数据进行分析,对齿轮箱故障进行了准确识别。Aiming at the phenomenon of spectrum ambiguity caused by traditional spectrum analysis method under non-stationary load,a signal model and order analysis method is used to study the fault diagnosis of the wind turbine gearbox.The vibration signal model of high speed stage of gearbox under non-stationary load is established,and the structure of time spectrum and order spectrum is derived.The order analysis method is used to analyze the order spectrum of vibration signal and extract gear fault feature.Finally,the real wind field gearbox data is analyzed,and the fault in gearbox is identified accurately.

关 键 词：风力发电机组 齿轮箱 非平稳 信号模型 阶次分析 故障诊断 

分 类 号：TM315[电气工程—电机]