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Communication Dans Un Congrès Année : 2014

An optimal condition-based maintenance policy for offshore wind turbine blades subject to degradation and shocks

Résumé

In this paper, we investigate an optimal condition-based maintenance policy for a deteriorating“multi-bladed” wind turbine system subject to stress corrosion cracking (SCC) and external shocks. Whenthe length of a crack in a blade reaches a critical size D, the blade fractures and it has to be replaced by a newone. An external shock is minor with probability 1- p and catastrophic (major) with probability p (0 <= p <=1). In order to avoid such costly failures, once the length of a crack in one of the blades exceeds athreshold d ( < D), it undergoes a major repair and a preventive maintenance (PM) action is performed on theother blade(s) as well; otherwise, a planned PM task is conducted on the whole system when its operationalage attains a value of T (> 0). An optimization model is proposed to simultaneously determine the optimalcontrol parameters d* and T* such that the average long-run maintenance cost per blade per unit time isminimized.
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Dates et versions

hal-01243664 , version 1 (15-12-2015)

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  • HAL Id : hal-01243664 , version 1

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Mahmood Shafiee, Maxim Finkelstein, Christophe Bérenguer. An optimal condition-based maintenance policy for offshore wind turbine blades subject to degradation and shocks. MIMAR 2014 - 8th IMA International Conference on Modelling in Industrial Maintenance and Reliability, IMA - Institute of Mathematics and its Applications, Jul 2014, Oxford, United Kingdom. pp.280-284. ⟨hal-01243664⟩
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