4International Cooperation Promotes the Integrated Design of Fixed Offshore Wind _DNV.pdf

1、International Cooperation International Cooperation Promotes the Integrated Design Promotes the Integrated Design of Fixed Offshore Wind of Fixed Offshore Wind DNV ENERGY SYSTEMSRenewables advisory劉家歡 2023-11DNV AgendaAbout DNVOffshore wind marketIntegrated designDNV About DNV3DNV A global assurance

2、 and risk management companyShip and offshore classification and advisoryEnergy advisory,certification,verification,inspection and monitoringManagement system certification,supply chain and product assuranceSoftware,cyber security,platforms and digital solutions 159years13,000employees100,000custome

3、rs100+countries5%+of revenue in R&DDNV 5A global assurance and risk management companyMaritime-3,236Energy Systems-4,348Business Assurance-1,495Supply Chain&Product Assurance-785Digital Solutions-728The Accelerator-313Group and Shared Services-1,80312,708employeesEmployees:Maritime3,236 Energy Syste

4、ms4,348 Business Assurance1,495 Supply Chain&Product Assurance 785 Digital Solutions728 The Accelerator313 Other1,803NorwegianAmericanGermanBritishChinesePolishIndianDutchItalianSouth KoreanSpanishBrazilianDanishSingaporeFrenchJapaneseSwedishGreekMalaysianAustralianCanadianMexican117nationalitiesNat

5、ionalities with more than 100 employees:DNV The worlds leading resource of independent energy experts and technical advisors642 GWof real-time operational data from solar PV,wind and storage assets under management170industry standards,guidelines and recommended practises,and approx.30 joint industr

6、y projects per year97%Played a role in the majority of the worlds offshore wind projects100large power utility companies trust us as their technical advisor30+yearsExperience in supporting the development of offshore wind farms4,400 expertsprovide local access to global best practice delivering safe

7、 and effective energy systems24laboratories and test centres including facilities for full-scale testing90+yearsserving the energy industry,including the oil and gas,wind and solar sectorsDNV Offshore wind market7DNV 68%of electricity will come from solar and wind in 20508DNV Share of wind in electr

8、icity generation in 205092000183000500010000150002000020222050Global wind electricity generation（TWh）annual average growth 8%91%9%2022OnshoreOffshore Fixed70%25%5%2050OnshoreOffshore FixedOffshore FloatingDNV World installed wind capacity10Our forecasts indicate that by 2050,there will be 385 GW of

9、onshore and 100 GW of fixed offshore wind capacity dedicated solely to hydrogen production on a global scale.DNV World average levelized cost of wind energy11DNV Integrated Design12DNV Offshore loads and structural design an integrated approach!13LOAD&DESIGN ITERATIONDNV 14 Established process:o Aer

10、o-elastic design tool:turbine manufacturero Offshore structural design tool:foundation designero IP barrier leads to un-optimised designContractual issues:o Turbine manufacturer Intellectual Property(IP)o Contractual status quoo Timing of contract awards differSolutions:o Integrated design methods f

11、or turbine and support structureo Turbine manufacturer willing to collaborate?o Turnkey solutions:manufacturer-designer-fabricator consortia?WindWavesAero-elastic design toolOffshore structural design toolFTURBINE MANUFACTURERFOUNDATION DESIGNContracting&IP BarrierCurrent Contracting ProcessDNV 15Su

12、perelement AnalysisSesamFatigue Manager(Sestra)Re-use wave loadsStructural analysisSesamGeniEJacket designFatigue Manager(Wajac)Wave loadsSesamFatigue Manager(Framework)FLS and ULS analysisBladedWind loads computationStructural analysisSuper-elementLoad time seriesSesamFatigue Manager Reduction into

13、 superelement and load filesFull model and wave loads ,Super-elementResults+DNV 16Integrated AnalysisSesamGeniEModellingModelLoadsBladedWind load computationWave load computation Structural analysisSesamFatigue Manager(Framework)FLS and ULS analysisDNV 17 The turbine designer typically establishes t

14、he optimum stiffness for the combined foundation,support structure and tower to give the lowest fatigue loading for the turbine.This frequency tends to lead to an unoptimised jacket design.Four jackets&towers considered:0.27Hz,0.29Hz,0.31Hz and 0.33Hz Turbine controller modified to allow operation c

15、loser to 3P&less optimum tip speed ratio Jacket#4(0.33Hz)has a 25%lower CAPEX than jacket#1(0.271Hz).This equates to 5%LCoE reduction(accounting for 0.2%energy penalty)Footprint=16.1m0.271HzJacket mass 1066 tonnesPiles mass 790 tonnesTransition 152 tonnesTower 290 tonnesTOTAL 2298 tonnesFootprint=31

16、.3m0.333HzJacket mass 813 tonnesPiles mass 386 tonnesTransition 159 tonnesTower 270 tonnesTOTAL 1628 tonnesFootprint=18.3m0.286HzFootprint=23.7m0.312HzDNV Project FORCE(FOr Reduced Cost of Energy)Integrated Design Approach to remove frequency constraints on the support structureDNV 18Integrated simu

17、lation,analysis and design of the turbine and support structure Relaxation of frequency constraint for support structure and tower1P Individual Pitch Control2P Individual Pitch ControlLidar note this used very conservative assumptions and Lidar has significant further potentialHigher speed,more slen

18、der blades FORCE Findings:10-15%CoE reduction possibleIntegrated design of wind turbines and their support structures is one of the most potent ways to save cost in offshore wind.DNV brought together 25 expert engineers from cost modelling,offshore load calculations,blade design,controller design,dr

19、ive train design and support structure design disciplines to get under the skin of cost-reduction.The FORCE team worked to integrate recent advances in offshore wind technology and demonstrate reductions of at least 10%to the cost of electricity generated by offshore wind.DNV DNV Services Definition

20、 of site conditions Site-specific design basis Generation of load case description DNV generic turbine model and controller(6MW-20+MW)Development of an integrated Bladed WTG/substructure model Support for offshore Site-Specific design load calculations(including seismic)and controller design Foundation design review and optimisation Turbine&tower design review and optimisation Cost Reduction Comparison Offshore wind design training19DNV DNV Thank you!20J