Vestas Wind Systems A/s

Kheng Hong Ang

John Godsk Nielsen

Anshuman Tripathi

Bing Xuan Li

Shu Yu Cao

Kim Brondum Larsen

Ove Styhm

Hock Heng Thia

Rasool Beevi D-o Mohamed Arif

Ove Styhm Kristensen

Bo Yin

Bing Li

Rasool Beevi D-O Mohamed Arif

A method for diagnostic monitoring of a wind turbine generator system, said wind turbine generator system comprising a generator, a drive train, and a number of sensors for providing signals and a control system. The method comprising the selection of three sets of signals from said sensors. From the three sets of signals three conditioned sets of signals are obtained by high pass filtering said first set of signals, low pass filtering the second set of signals, and forming a moving average value on the third set of signals. Based on each of said first, second and third set of conditioned signals an evaluation is performed in order to determine a fault, where said evaluation comprises comparing the first, second and third set of conditioned signals with reference values. If said comparison indicates a fault an alarm is set.

Method for diagnostic monitoring of a wind turbine generator system

Method, system, and computer readable medium for determining a fault in a power filter of a wind turbine generator. The method may include the steps of calculating a reactive power consumed by the power filter, and comparing the calculated reactive power to a predefined threshold reactive power to determine the fault.

System and method for monitoring power filters and detecting power filter failure in a wind turbine electrical generator

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Singapore, Singapore

Kheng Hong Ang