Value of information of repair times for offshore wind farm maintenance planning

The Science of Making Torque from Wind

Seyr, Helene^1 ; Muskulus, Michael^1

Department of Civil and Transport Engineering, Norwegian University of Science and Technology, Trondheim

NO-7491, Norway^1

关键词: Cost factors;    Cost of energies;    Decision support models;    Maintenance cost;    Maintenance models;    Maintenance planning;    Repair time;    Value of information;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/753/9/092009/pdf
DOI  :  10.1088/1742-6596/753/9/092009

来源: IOP

【 摘 要 】

A large contribution to the total cost of energy in offshore wind farms is due to maintenance costs. In recent years research has focused therefore on lowering the maintenance costs using different approaches. Decision support models for scheduling the maintenance exist already, dealing with different factors influencing the scheduling. Our contribution deals with the uncertainty in the repair times. Given the mean repair times for different turbine components we make some assumptions regarding the underlying repair time distribution. We compare the results of a decision support model for the mean times to repair and those repair time distributions. Additionally, distributions with the same mean but different variances are compared under the same conditions. The value of lowering the uncertainty in the repair time is calculated and we find that using distributions significantly decreases the availability, when scheduling maintenance for multiple turbines in a wind park. Having detailed information about the repair time distribution may influence the results of maintenance modeling and might help identify cost factors.