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 Mingxin Li,Jichuan Kang,Liping Sun,et al.Development of Optimal Maintenance Policies for Offshore Wind Turbine Gearboxes Based on the Non-homogeneous Continuous-Time Markov Process[J].Journal of Marine Science and Application,2019,(1):93-98.[doi:10.1007/s11804-019-00075-9]
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Development of Optimal Maintenance Policies for Offshore Wind Turbine Gearboxes Based on the Non-homogeneous Continuous-Time Markov Process


Development of Optimal Maintenance Policies for Offshore Wind Turbine Gearboxes Based on the Non-homogeneous Continuous-Time Markov Process
Mingxin Li1 Jichuan Kang12 Liping Sun1 Mian Wang13
Mingxin Li1 Jichuan Kang12 Liping Sun1 Mian Wang13
1 College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China;
2 Center for Marine Technology and Engineering, University of Lisbon, Lisbon, Portugal;
3 University of California, Berkeley, San Francisco, CA, USA
Maintenance policyNon-homogeneous continuous-time Markov processOffshore wind turbine gearboxesReliability analysisFailure ratesSystem engineering
Gearbox in offshore wind turbines is a component with the highest failure rates during operation. Analysis of gearbox repair policy that includes economic considerations is important for the effective operation of offshore wind farms. From their initial perfect working states, gearboxes degrade with time, which leads to decreased working efficiency. Thus, offshore wind turbine gearboxes can be considered to be multi-state systems with the various levels of productivity for different working states. To efficiently compute the time-dependent distribution of this multi-state system and analyze its reliability, application of the nonhomogeneous continuous-time Markov process (NHCTMP) is appropriate for this type of object. To determine the relationship between operation time and maintenance cost, many factors must be taken into account, including maintenance processes and vessel requirements. Finally, an optimal repair policy can be formulated based on this relationship.


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Received date:2017-10-12。
Corresponding author:Mingxin Li,limingxin@hrbeu.edu.cn
Last Update: 2019-05-14