A decision support system for strategic maintenance planning in offshore wind farms: decision supply system for offshore wind farms

Xiaodong Li, Djamila Ouelhadj, Xiang Song, Dylan Francis Jones, Graham Thomas Wall, Kerry E. Howell, Paul Igwe, Simon Martin, Dongping Song, Emmanuel Pertin

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Abstract

This paper presents a Decision Support System (DSS) for maintenance cost optimisation at an Offshore Wind Farm (OWF). The DSS is designed for use by multiple stakeholders in the OWF sector with the overall goal of informing maintenance strategy and hence reducing overall lifecycle maintenance costs at the OWF. Two optimisation models underpin the DSS. The first is a deterministic model that is intended for use by stakeholders with access to accurate failure rate data. The second is a stochastic model that is intended for use by stakeholders who have less certainty about failure rates. Solutions of both models are presented using a UK OWF that is in construction as an example. Conclusions as to the value of failure rate data are drawn by comparing the results of the two models. Sensitivity analysis is undertaken with respect to the turbine failure rate frequency and number of turbines at the site, with near linear trends observed for both factors. Finally, overall conclusions are drawn in the context of maintenance planning in the OWF sector.
Original languageEnglish
Pages (from-to)784-799
Number of pages32
JournalRenewable Energy
Volume99
Early online date31 Jul 2016
DOIs
Publication statusPublished - Dec 2016

Keywords

  • offshore wind
  • renewable energy
  • operations and maintenance
  • decision support
  • stochastic optimisation

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