Recent environmental awareness results particularly from the phenomenon of global warming, the limitation of the combustible resources and the lack of public acceptance of nuclear power plants including the problem to find appropiate nuclear waste deposites, has pushed renewable sources of energy towards the top of the power generation agenda. This has helped to promote wind power as one of the most cost effective of the renewable technologies. Since the energy gain from off-shore power plants (OWEP) is higher as onshore, many offshore wind parks worldwide are projected. The other side of the medal is that the costs for inspections and maintenance offshore are much higher that for onshore plants. It has to be specified that sometimes, under harsh condition on the sea inspections are not practicable. For this reason it makes sense to develop monitoring systems in order to reduce the number of inspections, to identify damage in an early phase and to forecast the remaining life-time of OWEPs. This first part of the paper gives an overview on the importance of OWEPs. In the second part some suitable methods for monitoring different parts of OWEPs are mentioned. Finally the methods for online force identification, damage detection/localization and sensor fault identification accompanied by corresponding experiments will be presented.
Structural health monitoring of offshore wind energy plants
2008
18 Seiten, 64 Quellen
Conference paper
English
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