Offshore Wind O&M Challenges - NREL

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Offshore MaintenanceIssues‣ Vessel deployment costand logistics‣ Accessibility andAvailability‣ Weather Windows‣ Status and HealthMonitoring‣ ReliabilityCredit: ABBCredit: GE Energy
Offshore Wind farm MaintenanceEgmond aan ZeeOffshore demonstration projectsupported by Dutch government– Selection of site– Issue of building permits– Investment subsidy– Production subsidyBuilt and operated by NoordzeeWind– 36 Vestas 3 MW V90 windturbines– 1 met mast, 116 m high– Hub height 70 m, rotor diameter90 m– Monopiles with scour protection– Water depth 20 m– 3 x 34 kV cables to the shore– 34/150 kV substation on shore– Renewable electricity for+/- 100.000 house holds (~ 330GWh)– Design life 20 yearsPercent Lost MWhRef: Operations Report 2008, NoordzeeWind, Doc No. OWEZ_R_000_20090807Operations 2008.pdf, websites: www.noordzeewind.nlSlide Credits:Jaap ’t HooftSenterNovemHenk KouwenhovenNoordzeeWindEOW 2009 Stockholm
Page 1 and 2: Offshore Wind O&M ChallengesNREL Co
Page 3 and 4: European Project Status…as of Jan
Page 5 and 6: US OffshoreWind ProjectsUS Offshore
Page 7: Current Technology‣ Fixed bottom
Page 11 and 12: AccessibilitySea-state conditions &
Page 13 and 14: Health MonitoringExample of Alarm S
Page 15 and 16: Reliability‣ Reliability is centr

Offshore Wind O&M Challenges - NREL

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