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To date, the focus of the research on offshore wind turbines (WTs) has been mainly on how to minimise their capital cost, but Operation and Maintenance (O&M) can represent up to a third of the lifetime costs of an offshore wind farm. The cost for the assets repair/replacement and for the logistics of the maintenance operations are two of the biggest contributors to O&M expenses. While the first is going to rise with the employment of bigger structures, the latter can significantly increase dependently on the reliability of the components, and thus the necessity to performed unscheduled maintenance operations. Using the reliability data for a population of offshore WTs (representing the configurations most employed offshore), first, the share of the components failures to the O&M cost, together with an estimation of their dependency on some O&M parameters has been derived. Then, by following a cost-based Failure Modes Effects and Criticality Analysis (FMECA), and ranking the components through O&M cost priority number, the most critical components for O&M unplanned operations are identified.
|Number of pages||11|
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 10 Oct 2018|
|Event||Global Wind Summit 2018 - WindEurope Conference and WindEnergy Hamburg - Hamburg, Germany|
Duration: 25 Sep 2018 → 28 Sep 2018
- offshore wind turbines
- operation and maintenance
- critical analysis
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1/08/18 → 20/11/20
2/04/17 → 31/03/20