风机安装_GL

Offshore Wind Farm Construction Experience in wind farm construction and the effect of new generation installation vessels and concepts on installation costs Contents of presentation • Germanischer Lloyd – Garrad Hassan • Thanet project • O2C • Future concepts Introduction GL Garrad Hassan GERMANISCHER LLOYD GROUP GL INDUSTRIAL SERVICES GL NOBLE DENTON Oil and Gas Engineering GL GARRAD HASSAN Renewables Engineering GL RENEWABLES CERTIFICATION Project Certification & Type Approval GL WINDTEST Renewables Test-House Offshore Wind Support Service Introduction GL Garrad Hassan 750 staff, in 41 locations, across 22 countries Vancouver Ottawa Portland San Diego Montreal Peterborough Austin Monterrey Porto Alegre Beijing Tokyo Shanghai Mumbai Bangalore Newcastle Melbourne Wellington Bristol Dublin Paris Izmir Copenhagen Hinnerup Oldenburg Hamburg Poland Lisbon Barcelona Zaragoza Madrid Imola Glasgow London Slough New office: Schipholweg 101T 2316 XC LEIDEN Thanet 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 2010 Thanet 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 finished Thanet 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 installation Thanet 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 seafastening Thanet 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¯ days O2C (Optimise Offshore Construction) Define Construction Sequence Define Project Understanding Client needs Define Constraints Time-domain simulations ALL OPTIONS GLGH Computational Effort Post-Hoc Analyses & Findings Flexible User-Friendly Interface Client Deliverables Cost Assumptions (Optional) Metocean Climate Monte Carlo Engine A2 SEA "Sea Jack" Monopile Installation [100 Units] 0 50 100 150 200 250 300 350 1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 46 49 52 55 58 61 64 67 70 73 76 79 82 85 88 91 94 97 100 No. of Units D ur at io n [D ay s] 0 50 100 150 200 250 300 350 Cumulative Installation Duration Weather Downtime O2C predicted build-up [P90] O2C predicted build-up [Incl Risk] A2 SEA "Sea Jack" Monopile Installation [100 Units] 0 50 100 150 200 250 300 350 1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 46 49 52 55 58 61 64 67 70 73 76 79 82 85 88 91 94 97 100 No. of Units D ur at io n [D ay s] 0 50 100 150 200 250 300 350 Cumulative Installation Duration Weather Downtime O2C predicted build-up [P90] O2C – validation on Thanet MP installation Planned Mobilisation δ δ Jack-up technical delays ~10 days ~20 days ~19 days Significant weather delay ~17 days ~9 days ~7.5 days Next 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 Wind Courtesy IHC Offshore Wind Patent pending Patent pending Comparison of Increasing Crane Lift Wind Speed Limitation for WTG Installation [100 Units] 0 50 100 150 200 250 1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 46 49 52 55 58 61 64 67 70 73 76 79 82 85 88 91 94 97 100 No. of Units Du ra tio n [D ay s] O2C predicted build-up [WS Limit = 8 m/s] O2C predicted build-up [WS Limit = 10 m/s] O2C predicted build-up [WS Limit = 12 m/s] 203 days 180 days 160 days March 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 pending Courtesy IHC Offshore Wind Courtesy Ballast Nedam Next generation concepts – One lift concept (2) • Installation duration reduced Comparison of Single-Lift vs Multiple Lift WTG Installation [100 Units] 0 50 100 150 200 250 1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 46 49 52 55 58 61 64 67 70 73 76 79 82 85 88 91 94 97 100 No. of Units D ur at io n [D ay s] O2C predicted build-up [Industry Practice Multiple Lifts] O2C predicted build-up [Single Lift Concept] 203 days 122 days March Start Next 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 benefit Comparison of Onshore vs Offshore Marshalling Harbours for WTG Installation [100 Units] 0 50 100 150 200 250 1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 46 49 52 55 58 61 64 67 70 73 76 79 82 85 88 91 94 97 100 No. of Units D ur at io n [D ay s] O2C predicted build-up [Onshore Marshalling Harbour] O2C predicted build-up [Offshore Marshalling Harbour] 203 days 197 days March Start