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Publications
Lotovskyi, E., Teixeira, A.P. and Guedes Soares, C. (2022), “Availability analysis of an offshore wind turbine subjected to age-based preventive maintenance by Petri Nets”, Journal of Maritime Science and Engineering, Vol. 10, 1000.
This paper analyses the production availability and maintenance costs of an offshore wind turbine with a horizontal axis configuration by Petri Nets and Monte Carlo Simulation. For this purpose, different features are implemented in a Petri Nets model, such as the components’ reliability and maintainability characteristics, the operation and maintenance logistics, including different types of vessels, the mobilization times and costs and the weather window to access the offshore wind turbine. The maintenance strategies consist of corrective maintenance and age-based imperfect preventive maintenance that depends on the components’ age and age reduction following the preventive maintenance action. Thereby, in order to reduce the operation and maintenance costs and to increase the operating income, the optimal parameters of the age-based preventive maintenance are estimated. As case study, a generic offshore wind turbine that operates at the Viana do Castelo wind farm in Portugal is adopted. The wind farm is located 18 km off the shore and the total exploration life of the turbine is 25 years.
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