The Research And Realization Of Monitoring And Diagnostic System Of Wind Turbine Gearbox

The working environment of wind generators is harsh, the wind generators are prone to suffer a breakdown, so its condition monitoring and fault diagnosis are very important. At present the main failures of wind generators are caused by fan faults or gearbox faults, and the gearbox faults cause the longest shutting down time, so the maintenance of gearbox is very meaningful. The purpose of this paper is to study and design monitoring and diagnostic system of wind turbine gearbox, to monitor the condition of wind turbine gearbox and diagnosis its fault.This paper is about condition monitoring and fault diagnosis of wind turbine gearbox, mainly including the following aspects:First of all, designed the monitoring and diagnostic system by PXI data acquisition system and LabVIEW, and the system can monitor vibration waveform of the gearbox, speed and torque of the shaft in real time, and observe the frequency domain waveform of wind turbine gearbox vibration signal in real time, can save running state information of the wind turbine gearbox for offline analysis.Secondly, this paper researched order analysis, achieved the order analysis algorithm in LabVIEW, and verified that the traditional signal processing method based on FFT spectrum is not suitable for wind turbine gearbox fault diagnosis, but the order analysis method will not be impacted by the fluctuations of the speed, and the fault diagnosis results are ideal.Finally, this paper researches the application of Support Vector Machine for fault diagnosis, and achieves intelligent diagnosis based on order analysis.