风电机组齿轮箱行星轮局部齿面剥落故障诊断  

Fault diagnosis of localized tooth flaking on planetary wheels of wind turbine gearboxes

作　　者：王子顺 汪韵朗 苑骁明 赵东辉 WANG Zishun;WANG Yunlang;YUAN Xiaoming;ZHAO Donghui(Mingyang Smart Energy Group Co.,Zhongshan,Guangdong 528400,China)

机构地区：[1]明阳智慧能源集团股份公司,广东中山528400

出　　处：《中国科技论文》2024年第11期1246-1256,共11页China Sciencepaper

摘　　要：为了提升风电机组传动链的预测性维护效果,行星轮系早期故障的准确诊断显得尤为重要。针对行星轮系故障特征的提取与分析,采用快速谱峭度(fast spectral kurtosis,FSK)和包络解调等方法,探索有效的故障诊断途径。通过对振动信号进行快速谱峭度分析和包络解调处理,成功提取了关键的故障特征。分析结果显示,不同时间点的频率成分变化揭示了故障的发展过程,即故障从齿圈的初始特征逐渐演变为行星轮的特征,最终发生某行星轮齿面的剥落。在这一过程中,齿圈的局部故障特征频率和行星架自转频率成分的明显变化为故障发展提供了重要线索。基于故障特征的演变情况,提出在故障发生前第34天进行预警,即行星轮转频成分分布增加,以便及时采取维修措施,防止故障进一步恶化。研究结果可为行星轮系的早期故障诊断提供一种有效方法,并为故障预警提供理论支持。In order to improve the effects of predictive maintenance for wind turbine drive chain,the accurate diagnosis of the initial failure of planetary wheel system is particularly important.In this study,for the extraction and analysis of planetary wheel system fault features,fast spectral kurtosis and envelope demodulation methods were used to explore effective fault diagnosis pathways.The key fault features were successfully extracted by fast spectral kurtosis analysis and envelope demodulation of the vibration signal.The analysis results show that the changes of frequency components at different time points reveal the development process of the fault,that is,the fault gradually evolves from the initial characteristics of the gear ring to the characteristics of the planetary wheel,and finally leads to the spalling of the tooth surface of a planetary wheel.In this process,the obvious changes in the localized fault characteristic frequency of the toothed ring and the planetary carrier rotation frequency components provide important clues for the fault development.Based on the evolution of the failure characteristics,an early warning is proposed to be carried out on the 34th day before the failure occurs,namely,an increase in the distribution of the planetary wheel rotation frequency components.Accordingly,timely maintenance measures can be taken to prevent further deterioration of the failure.In summary,this study provides an effective method for early fault diagnosis of planetary wheel systems and theoretical support for fault early warning.

关 键 词：早期故障诊断 行星轮系 振动信号分析 快速谱峭度 包络解调 预警时机 

分 类 号：TH17[机械工程—机械制造及自动化] TH113.1