SHM strategies, application and measurements on tripod offshore wind energy converters within the German offshore park Alpha Ventus

摘要

Prototypes of wind turbines of the megawatt class are to be built and tested until 2008 withinrna German offshore wind energy test field in the North Sea (ALPHA VENTUS). To ensure a high operationalrnreliability of offshore wind turbines with economically acceptable repair and maintenance efforts, comprehensiverndiagnosis and supervision concepts are required. Automatic monitoring systems will be an essential part of suchrnconcepts. Because of the fact, that during operation there will be static and dynamic interaction between therncomponents ‘structure’, ‘machinery’ and ‘blades’ it is necessary to develop the monitoring techniques in anrnoverall concept. These monitoring systems are supposed to be applied for the design and testing as well as forrnthe operation and maintenance phases. In the paper the developed approaches for the measurement of actionsrnand the condition monitoring of all components of an offshore wind energy plant will be shown.