Study On State Monitoring Of Wind Turbine Gearbox’s Black Box

The complexity of wind turbine drive train loads, and the design of wind turbinegearboxes, manufacturing processes, the difference of material properties, lubricationsystem and its maintenance and other reasons, will result in the gear box failure. Asgearbox failure results in the longest downtime for fan failure worldwide, state of windturbine gearboxes monitoring and fault diagnosis is very important. Wind turbine gearboxfailure has caused a great impact on the wind farm operation and maintenance, and thencaused no small economic loss. So gearbox fault monitoring is particularly important.This paper describes the current development status of wind turbine gearboxesmonitoring, and understanding the structural characteristics of wind turbines and windturbine gearboxes, analyzes the gearbox fault types, the causes and troubleshootingmethods in the world today. By installing the wind turbine gearbox temperature sensordevices in different locations, using data acquisition card from the NI LabVIEW softwareacquire these temperature data, and then timely monitoring of gearbox oil temperature data.Collecting temperature edge value when wind gearbox fault occurs, then the fault warningvalue can be initially identified. When the temperature exceeds the value of early warningsystem will issue a warning and remind the staffs of wind farm off repair timely, to achieveadvanced prediction gearbox failure that can effectively reduce the extent of damage to thegearbox. And Store these data to a PC terminal to record gearbox historical data, afterrunning for some time, to find the law of gearbox failure. Thus gearbox Enterprises couldhave a improvement program in design and could estimate the maintenance cycle. Finally,prolong the life of the gear box, reduce the cost of maintenance and repair of the gearbox,and create greater profits for the enterprise.