Research on Fault Diagnosis of Wind Turbine Blades Based on Root Detection Stress Fluctuations
Regarding the fault diagnosis of wind turbines,the load mode and vibration modeling of wind turbine blades were first introduced,and the characteristic fault vibration mechanism of the blades was described.At the same time,a direct detection method is introduced to install stress sensors directly at the root of the blades of the unit and detect abnormal fluctuation components of stress fluctuations.The results show that under different wind speed conditions,the oscillation frequency of the three blades in the rotating plane is about 2.2 Hz,which is within the vibration excitation range of the blades and causes significant fluctuations.The fault diagnosis accuracy of the proposed method is as high as 98.69%.It is not easily affected by signal interference in fault diagnosis and has high diagnostic accuracy,providing effective reference for the safe operation and maintenance of modern wind turbines.
万方数据
维普
