Influence of uncertainty on performance of opportunistic maintenance strategy for offshore wind farms

Mingxin Li, Xiaoli Jiang, James Carroll, Rudy R. Negenborn

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

1 Citation (Scopus)
26 Downloads (Pure)


The increasing capacity of offshore wind energy around the world brings challenges in Operation and Maintenance (O&M) management. Over the past years, many studies have focused on developing sound maintenance strategies in order to minimize maintenance cost or maximize availability. One of the promising maintenance strategies is opportunistic maintenance due to its potential to combine maintenance activities and save maintenance efforts. In these models, a common assumption is made that input parameters are deterministic and maintenance decisions are made based on these assumed deterministic input parameters. However, offshore wind farm maintenance in the practical world is a complicated task where multiple types of uncertainty exist. These uncertainties may affect evaluation or output of the maintenance model, making maintenance decisions sub-optimal or even inappropriate. In this paper, a probabilistic simulation-based approach integrating an uncertainty module and a simulation module is proposed to study the influence of the uncertainties on maintenance performance. We identify the primary input parameters which should be considered as uncertainty but are simplified to be deterministic values in offshore wind energy maintenance models. These deterministic parameters are modelled as stochastic values in the uncertainty module to generate uncertainty scenarios. The simulation module for opportunistic maintenance is developed to quantity the expected maintenance cost and lost production. The most influential uncertainties are identified. Valuable information and suggestions are provided to offshore wind farm owners for future decision-making and project management.
Original languageEnglish
Title of host publicationProceedings of OCEANS 2021: San Diego – Porto
Number of pages10
ISBN (Electronic)978-0-692-93559-0
ISBN (Print)978-1-6654-2788-3
Publication statusPublished - 2021
EventOCEANS 2021:: San Diego – Porto - In-Person & Virtual at San Diego, United States
Duration: 20 Sept 202123 Sept 2021


ConferenceOCEANS 2021:
Country/TerritoryUnited States
CityIn-Person & Virtual at San Diego
Internet address

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.


  • maintenance strategy
  • uncertainty
  • offshore wind energy
  • operation and maintenance


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