Sensitivity analysis of offshore wind farm operation and maintenance cost and availability

Rebecca Martin, Iraklis Lazakis, Sami Barbouchi, Lars Johanning

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

Operation and Maintenance (O&M) costs are estimated to account for 14%-30% of total Offshore Wind Farm (OWF) project lifecycle expenditure according to a range of studies. In this respect, identifying factors affecting operational costs and availability are vital for wind farm operators to achieve the most profitable decisions. Many OWFs are built in stages and the important factors may not be consistent for the different phases. To address this issue, three OWF case studies are defined to represent two phases and a complete project. An initial qualitative screening sensitivity analysis was conducted to identify the most important factors of O&M affecting operating cost and availability. The study concluded that the important factors for total O&M cost were access and repair costs along with failure rates for both minor and major repairs. For time-based availability, the important factors identified were those related to the length of time conducting the maintenance tasks, i.e. the operation duration and the working day length. It was found that the two stages had similar results, but these were different compared to the complete project. In this case, the results provide valuable information to OWF operators during the project development and decision making process.

LanguageEnglish
Pages1226-1236
Number of pages11
JournalRenewable Energy
Volume85
Early online date7 Aug 2015
DOIs
Publication statusPublished - Jan 2016

Fingerprint

Offshore wind farms
Sensitivity analysis
Availability
Costs
Repair
Operating costs
Screening
Decision making

Keywords

  • availability
  • cost modelling
  • maintenance
  • offshore wind
  • operations
  • sensitivity analysis

Cite this

Martin, Rebecca ; Lazakis, Iraklis ; Barbouchi, Sami ; Johanning, Lars. / Sensitivity analysis of offshore wind farm operation and maintenance cost and availability. In: Renewable Energy. 2016 ; Vol. 85. pp. 1226-1236.
@article{a1760163de53448f86c035e9cfbcdf70,
title = "Sensitivity analysis of offshore wind farm operation and maintenance cost and availability",
abstract = "Operation and Maintenance (O&M) costs are estimated to account for 14{\%}-30{\%} of total Offshore Wind Farm (OWF) project lifecycle expenditure according to a range of studies. In this respect, identifying factors affecting operational costs and availability are vital for wind farm operators to achieve the most profitable decisions. Many OWFs are built in stages and the important factors may not be consistent for the different phases. To address this issue, three OWF case studies are defined to represent two phases and a complete project. An initial qualitative screening sensitivity analysis was conducted to identify the most important factors of O&M affecting operating cost and availability. The study concluded that the important factors for total O&M cost were access and repair costs along with failure rates for both minor and major repairs. For time-based availability, the important factors identified were those related to the length of time conducting the maintenance tasks, i.e. the operation duration and the working day length. It was found that the two stages had similar results, but these were different compared to the complete project. In this case, the results provide valuable information to OWF operators during the project development and decision making process.",
keywords = "availability, cost modelling, maintenance, offshore wind, operations, sensitivity analysis",
author = "Rebecca Martin and Iraklis Lazakis and Sami Barbouchi and Lars Johanning",
year = "2016",
month = "1",
doi = "10.1016/j.renene.2015.07.078",
language = "English",
volume = "85",
pages = "1226--1236",
journal = "Renewable Energy",
issn = "0960-1481",

}

Sensitivity analysis of offshore wind farm operation and maintenance cost and availability. / Martin, Rebecca; Lazakis, Iraklis; Barbouchi, Sami; Johanning, Lars.

In: Renewable Energy, Vol. 85, 01.2016, p. 1226-1236.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Sensitivity analysis of offshore wind farm operation and maintenance cost and availability

AU - Martin, Rebecca

AU - Lazakis, Iraklis

AU - Barbouchi, Sami

AU - Johanning, Lars

PY - 2016/1

Y1 - 2016/1

N2 - Operation and Maintenance (O&M) costs are estimated to account for 14%-30% of total Offshore Wind Farm (OWF) project lifecycle expenditure according to a range of studies. In this respect, identifying factors affecting operational costs and availability are vital for wind farm operators to achieve the most profitable decisions. Many OWFs are built in stages and the important factors may not be consistent for the different phases. To address this issue, three OWF case studies are defined to represent two phases and a complete project. An initial qualitative screening sensitivity analysis was conducted to identify the most important factors of O&M affecting operating cost and availability. The study concluded that the important factors for total O&M cost were access and repair costs along with failure rates for both minor and major repairs. For time-based availability, the important factors identified were those related to the length of time conducting the maintenance tasks, i.e. the operation duration and the working day length. It was found that the two stages had similar results, but these were different compared to the complete project. In this case, the results provide valuable information to OWF operators during the project development and decision making process.

AB - Operation and Maintenance (O&M) costs are estimated to account for 14%-30% of total Offshore Wind Farm (OWF) project lifecycle expenditure according to a range of studies. In this respect, identifying factors affecting operational costs and availability are vital for wind farm operators to achieve the most profitable decisions. Many OWFs are built in stages and the important factors may not be consistent for the different phases. To address this issue, three OWF case studies are defined to represent two phases and a complete project. An initial qualitative screening sensitivity analysis was conducted to identify the most important factors of O&M affecting operating cost and availability. The study concluded that the important factors for total O&M cost were access and repair costs along with failure rates for both minor and major repairs. For time-based availability, the important factors identified were those related to the length of time conducting the maintenance tasks, i.e. the operation duration and the working day length. It was found that the two stages had similar results, but these were different compared to the complete project. In this case, the results provide valuable information to OWF operators during the project development and decision making process.

KW - availability

KW - cost modelling

KW - maintenance

KW - offshore wind

KW - operations

KW - sensitivity analysis

UR - http://www.scopus.com/inward/record.url?scp=84938818030&partnerID=8YFLogxK

UR - http://www.sciencedirect.com/science/journal/09601481

U2 - 10.1016/j.renene.2015.07.078

DO - 10.1016/j.renene.2015.07.078

M3 - Article

VL - 85

SP - 1226

EP - 1236

JO - Renewable Energy

T2 - Renewable Energy

JF - Renewable Energy

SN - 0960-1481

ER -