基于磁栅触发振动采集的风电齿轮箱阶次分析方法  

ORDER ANALYSIS OF WIND TURBINE GEARBOX BASED ON MAGNETIC GRID TRIGGERED VIBRATION ACQUISITION

作　　者：黄光远 冯延晖[1] 邱颖宁[1] 任铭 徐晨 Huang Guangyuan;Feng Yanhui;Qiu Yingning;Ren Ming;Xu Chen(School of Energy and Power Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学能源与动力工程学院,南京210094

出　　处：《太阳能学报》2021年第8期349-354,共6页Acta Energiae Solaris Sinica

基　　金：江苏省绿色船舶技术重点实验室基金(2019Z05);国家自然科学基金(51505225);江苏省自然科学基金(BK20131350)。

摘　　要：研究一种新型的风电齿轮箱阶次分析方法,以磁栅脉冲作为振动信号采集的触发源,可实现变工况下的等角度采样。将采样获得的振动信号进行傅里叶变换后获得阶次谱,该种硬件阶次分析方法可避免转速变化对特征值定位的影响。在风电机组模拟系统的齿轮箱测试实验中,阶次谱分析结果表明该方法可准确定位齿轮箱在变速运行下的特征阶次,当转速变化时特征阶次稳定不变。该方法为大型风电机组齿轮箱故障诊断提供了一种新途径。The gearbox is a main transmission component of the wind turbine. Its fault may cause the longest downtime of the unit.Accurate fault diagnosis can effectively reduce unplanned downtime,increase power generation and improve the economic benefits of the wind farm. In this paper,a novel method of order analysis of wind turbine gearbox is demonstrated. The magnetic grid pulse signal is used as the trigger source for vibration signal acquisition,which can realize uniform angle sampling under variable working conditions.The order spectrum can be obtained by Fourier transforming the vibration signal in the angular domain. This kind of hardware-based order analysis can avoid the influence of speed changing when locating eigenvalues. In gearbox tests of the simulation system of wind turbine unit,results of the order spectrum analysis show that this method can accurately locate the stable characteristic order of the gearbox under variable speed operation,which provides a new way for fault diagnosis of large wind turbine gearboxes.

关 键 词：风电机组 振动监测 阶次 齿轮箱 磁栅 等角度采样 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]