风机安装_GL

Offshore Wind Farm ConstructionExperience in wind farm construction and the effect of new generation installation vessels and concepts on installation costsContents of presentation•Germanischer Lloyd –Garrad Hassan •Thanet project•O2C•Future conceptsIntroduction GL Garrad HassanIntroduction GL Garrad Hassan750 staff, in 41 locations, across 22 countriesVancouver Ottawa Portland San Diego Montreal PeterboroughAustin Monterrey Porto AlegreBeijing Tokyo Shanghai Mumbai Bangalore Newcastle Melbourne WellingtonBristol DublinParisIzmir Copenhagen Hinnerup Oldenburg Hamburg Poland LisbonBarcelona Zaragoza MadridImolaGlasgow London Slough New office:Schipholweg 101T 2316 XC LEIDENThanet project experience –general (1)Thanet: largest offshore wind farm in the world •Owned by Vattenfall Wind Power•300 MW, 100 Vestas V90-3MW turbines•10 nm off the coast of Kent (UK)•Fully operational Sept 2010Thanet project experience –general (2)•Project management foundation contracts by GL Garrad Hassan/Noble Denton •More then 14 different subcontracts (managed by abt 40 people over 3 yrs)•Halfway June’09 Principal contractor role went to Thanet Offshore Wind •Water depths up to 30.5 m + spring tide 2.5 m: airgap•High tidal currents•Marine traffic (English Channel and Thames Estuary)•Total number of vessels on this project: 80•Large number of work vessels in the field at same time, up to 35.Thanet project experience –Mono Piles (1)•MP’s fabricated by SIF, stored at Kats, transported to Ramsgate •Ramsgate: limited access (water depth, current) and quay capacity•MP up to 60 m long, up to 485 t weight,• 5 different OD’s (up to 4.9 m). Same diameter fabricated at different times.•Installation started, while Engineering not finishedThanet project experience -Mono Piles (2)•Trunnions appeared to be necessary•Piling with S1400 hydrohammer•100 Monopiles installed by Sea Jack (+ 2 tugs)•Total duration 300+ days (excl mob/demob)Thanet project experience –Transition Pieces (1)•TP’s fabricated by SIF, outfitted by Smulders•Pick up 6 TP’s from Vlissingen (8 hrs transit)•84 Transition Pieces installed by MPI Resolution •Duration 180+ days•Then MPI Resolution reassigned to WTG installationThanet project experience –Transition Pieces (2)•Remaining 16 Transition pieces installed by Sea Jack•Pick up from Ramsgate (3 hrs transit)•Durations 30 days (excl mob/demob)•J-tubes installation required diving assistance.•Limited thickness of TP bottom posed constraints to seafastening •Also I-tubes and Anodes constrained seafasteningThanet project experience -WTG installation•100 WTG’s installed by MPI Resolution•Pick up from Dunkirk (10 hrs transit)•Piecemal installation•Tower in 1 section•Each blade installed separately (no bunny ears)•Total duration 200¯daysO2C (Optimise Offshore Construction)Define Construction Sequence Define ProjectUnderstanding Client needsDefine Constraints Time-domain simulations ALL OPTIONS GLGHComputationalEffortPost-Hoc Analyses &FindingsFlexible User-Friendly Interface Client DeliverablesCostAssumptions (Optional)Metocean ClimateMonte Carlo EngineO2C –validation on Thanet MP installationJack-up technical delaysNext generation concepts –increase wind speed criterion (1)•Wind speed criterion for lifting a blade: 8 m/s (may be 9 m/s)•What if….wind speed criterion can be increased?•Future concepts:Courtesy IHC Offshore WindCourtesy IHC Offshore WindPatent pendingPatent pendingMarch Start•8 m/s standard criterion•Increase in wind speed criterion to:•10 m/s •12 m/s•Installation duration reduced up to 10%, 20 %Next generation concepts –increase wind speed criterion (2)Next generation concepts –One lift concept (1)•WTG installed piecemal•What if….WTG installed as 1 fully assembled unit?•Future concepts:Patent pendingCourtesy IHC Offshore WindCourtesy Ballast NedamNext generation concepts –One lift concept (2)•Installation duration reducedMarch StartNext generation concepts –offshore harbour (1)•Marshalling harbour for TP’s and MP’s / Sea Jack: Ramsgate (3 hrs)•Marshalling harbour for TP’s / Resolution: Vlissingen (8 hrs)•Marshalling harbour for WTG’s / Resolution: Dunkirk (10 hrs)•What if….there is a neighbouring offshore harbour?•Future concepts:Next generation concepts –offshore harbour (2)•Probably more benefit when located further offshore•Large transport capacity Resolution appears clear benefitMarch Start。