Integrated preventive–proactive–reactive offshore wind farms maintenance planning

Cost-Effectiveness of Predictive Maintenance for Offshore Wind Farms: A Case Study

“…The primary contribution of this work is a methodology for evaluating specific maintenance operations for Offshore Wind Farms (OWFs) concerning the implementation of predictive maintenance. This continues previous research by the authors, which focused on developing specific reference models for predictive maintenance [11,12], where service mission planning was the focus of the work and not the monetary impact.…”

“…The S T service mission includes the allocation of available service teams to selected WTs and their transport using the available fleet of vessels. In the adopted planning process for this type of mission, the following assumptions were made [12]:…”

“…Under predictive maintenance, planning service missions comes down to determining an S T plan whose value of ε ′ guarantees the lowest maintenance costs (6). Declarative programming techniques [12] were used to designate this type of mission. The proposed approach assumes that the considered problem is formulated into a Constraint Optimization Problem (COP).…”

“…Additionally, a prediction score of 0.3 is valuable to prioritize over a prediction score of 0.1, even though both would be classified as having no imminent downtime events. The importance of this was explored in [12], where the prediction scores are used to evaluate the possible impacts of the downtime events.…”

“…A membership function for each prediction outcome is then calculated; see Equations ( 9)- (12). These functions will satisfy Requirement 2, as they evaluate each of the four prediction outcomes and then a weighted distance for both the prediction scores, as well as the prediction scores of the opposite event.…”