Malfunction Monitoring And Study Of MW-levels Wind Turbine Gearbox

China’s wind turbine companies are trying to achieve megawatt wind power technology and equipment, and to promote large-scale commercial development megawatt wind power generation technology in China. Megawatt wind turbine core components of the gear box, play a crucial role in the quality of the unit and found that the early failure of the gear box as soon as possible to find the reasons for the failure of the gearbox, take appropriate measures as soon as possible, to avoid the occurrence of significant personal device Accidemt has a very important significance.This thesis is based on vibration diagnostics and oil analysis megawatt wind turbine gearbox fault monitoring and analysis. First, this paper discusses the megawatt wind power the gearbox performance testing research background, research status and the purpose and significance of the research; megawatt wind turbine gearbox common fault, summarizes the the gearbox vibration noise mechanism meshing frequency calculations, vibration, noise evaluation, and to develop standards for the detection of gearbox to select the measurement point of the detection system and installation requirements, and according to the characteristics of the gearbox vibration; once again describes the integration of wind power gearbox oil detect indicators of the monitoring system, the system structure and the basic parameters of the mechanical structure and the installation and testing requirements; selected megawatt-class wind turbine gearbox vibration monitoring device, device characteristics, and install the full set of monitoring systems to the test on a wind turbine. Produced a small passage bodies, with the manual method to the preparation of different oil samples for test. The comparative analysis of the collected data from the three aspects of accuracy, repeatability, and linearity, thereby to determine the reliability and accuracy of the system, now installed wind turbine machine test stand to accompany gearbox online test. Finally, the analysis of the necessary preparatory work megawatt wind power gearbox fault detection system characteristics of the study, as well as large-scale engineering applications, and provide the basis for subsequent research.Most of the domestic megawatt wind turbine gearbox fault line monitoring system is still in the experimental stage, real products are rare for engineering practice. Carry megawatt wind power gearbox fault line monitoring system basic theoretical research, and actively develop monitoring sensors, test equipment, integrated information processing and analysis system is still the subject of future oil monitoring studies.