Electrostatic Monitoring of Wind Turbine Gearbox Under Variable Operating Conditions

The electrostatic sensing technique has been verified to be a viable method for tribo-contact monitoring under laboratory conditions in previous investigations. The monitoring of wind turbine gearbox is a possible approach for electrostatic application. It usually under variable operating conditions while working. This paper introduced a new method called moving window local outlier factor (MWLOF) to process electrostatic monitoring signals with multi-sensors. It can detect early faults earlier and has a better sensitivity with the information fusion method than conventional techniques, which leads to a better industrial application in future.