Category: Tabs-frontpage

Phase one qualification performed

Banner

The overall concept rankings were based on  analysis of Levelised Cost of Energy (LCoE), Life Cycle Assessment (LCA) and Risk evaluation determined by the LIFES50+ Overall Evaluation tool named “Floating Offshore Wind Assessment Tool” (FOWAT).
Gruppebilde

 

The Overall Evaluation determined that Iberdrola’s TLP and Olav Olsen’s concrete semi-sub concepts should be selected for Phase II (Concept optimisation) of the project, where they will undergo further studies and optimization in order to verify that the concepts can accommodate a 10MW wind turbine in a cost effective way.

Experimental results from Hardware-in-the-Loop Model testing at SINTEF Ocean’s ocean basin in Trondheim and Politecnico di Milano’s wind tunnel in Milan will be used for further development and verification of the technologies using numerical simulation tools. The innovative concepts will be further developed, technically and economically, to reach a higher technology readiness level. The ultimate goals are to facilitate innovation, reduce risk, and reduce the LCOE, and the uncertainties associated with its estimation.

The evaluation process was subject to strict governing criteria to determine the outcomes and does not constitute any form of approval, verification or certification of the selected designs.

Share on FacebookShare on Google+Tweet about this on TwitterShare on LinkedIn

Phase One – Evaluation of the concepts

shutterstock_71498701

The four initial innovative concepts selected as part of the project are at TRL 4 and can accommodate wind turbines up to 5MW. These platforms are among the most advanced floating substructure concepts currently being developed in Europe.

Progress update

The Design basis (MS#1) provided the concept developers with the information required to upscale their floating platform concepts to support a 10MW wind turbine in three reference locations (Golfe de Fos, Gulf of Maine and West of Barra), representing different met-ocean conditions, and to identify the load cases and the wind turbine models for the design.

Bilde 1

In the second technical milestone (Concepts designs ready), the concept developers used information from MS#1 to upscale their concepts to accommodate a 10MW wind turbine. In this ongoing upscaling/optimization process, radically different choices regarding structural design, mooring design, wind turbine controller and marine operations are required.

In parallel, the Design practice review (MS#6) an overview of current design practice, procedures, methodology, guidelines and standards with a gap analysis was carried out.

Evaluation methodology ready (MS#3)has produced a LIFES50+ Overall Evaluation tool named “Floating Offshore Wind Assessment Tool (FOWAT)” to qualify the four concepts designs under an economic, environmental, risk and technical perspective. Of note is that floating wind energy is still at the early stages of its development and the associated experience is scarce. Therefore, the criteria and weighting factors that are applied in the evaluation tool are the agreed best estimates of the partners involved in the project and the tool development.

Phase 1 will be completed at a workshop in Barcelona from 8-10 of March 2017, where the Phase 1 qualification performed (MS#4) will present the evaluation of the four innovative concept designs and disclose the results. The overall concept rankings will be based on the scoring results obtained by the Levelised Cost of Energy (LCOE), Life Cycle Assessment (LCA) and Risk evaluation determined by FOWAT.

BildeillustrasjonNY_

Phase Two – Concept optimisation

Phase 2 of the project officially begins in April 2017, when the two selected concepts will undergo further studies in order to accommodate a 10MW wind turbine. The innovative concepts will be further developed, technically and economically, to reach a higher technology readiness level. Industrialisation, manufacturability and environmental impacts will also be considered with relevant guidelines/recommended practices produced.

Experimental results from scale model testing in both ocean basin and wind tunnels will be used to for further development and verification the technologies using numerical simulation tools. The ultimate goals are to facilitate innovation, reduce risk, and reduce the LCOE and the uncertainties associated with its estimation.

 

Share on FacebookShare on Google+Tweet about this on TwitterShare on LinkedIn

The third technical milestone: The Evaluation methodology ready in LIFES50+

NAUTILUS Semi-submersible in steel

The tool was developed to qualify the four concepts designs under an economic, environmental, risk and technical perspective, which enable the calculation of the following aspects to be considered in both Phase I and Phase II evaluation of the concept designs:

  • Economic assessment: Levelised Cost of Energy (LCoE) calculation expressed in €/MWh and included in the LCoE module of the Single Calculation Mode of the tool.
  • Environmental assessment: Life Cycle Assessment (LCA) analysis using three environmental indicators included in the LCA module.
  • Risk evaluation: Technology risk assessment included in Risk module.
  • Uncertainty assessment: Provides LCoE calculation considering an uncertainty range as per the inclusion of uncertainty ranges in some of the inputs used for the LCoE computation. This assessment is available in the LCoE module in the Evaluation Mode of the tool.
  • Ranking generator for concepts designs: Calculation of the final evaluation ranking of the designs using the results of LCoE, LCA and Risk assessment (multi-criteria analysis). This operation is executed in the Multi-Criteria module.
  • KPI information: Concept design technical description using key performance indicators and generation of a KPI report.

FOWAT – The overall evaluation tool structure

During the coming months the concept designer will use an agreed LCOE-LCA and KPI data collection questionnaire to feed the tool including iteration with the Evaluation Committee in order to improve / align their design for the Phase 1 selection. The overall concepts ranking will be based on the scoring results obtained by the LCOE, LCA and Risk evaluation given by FOWAT.

A workshop now planned in Barcelona for 6-8 of March 2017 will present the evaluation of the four designs and disclose the results; which two of the four concept have been selected for further studies in the project.

Share on FacebookShare on Google+Tweet about this on TwitterShare on LinkedIn

Concepts

Concepts

concepts

Share on FacebookShare on Google+Tweet about this on TwitterShare on LinkedIn

Approach

Approach

 

Input:

 

approach2

Outcome:

 

approach-output

Share on FacebookShare on Google+Tweet about this on TwitterShare on LinkedIn

Goals

Goals

Goals

  1. Substructure design for very large floating offshore wind turbines (10MW)
  2. Methodologies for design evaluation, including LCOE (Levelized Cost of Energy)

To realize these goals, we need:

  1. Multi-fidelity numerical tools in the context of qualifying and optimizing large substructures
  2. Experimental techniques specific to floating offshore wind turbines
  3. Concept industrialization, as an early focus in the design
  4. Uncertainty and risk assessment related to unprecedented large wind turbine substructures

Outcome:

–   Mature floating substructure design synchronized with the expected time-to-market of 10MW offshore wind turbine technology
–   Increased scientific and industrial knowledge on numerical and experimental design methodologies and procedures, also enabling more streamlined, KPI based developments
–   Ultimately, a considerable LCOE reduction for large floating offshore wind farms

Share on FacebookShare on Google+Tweet about this on TwitterShare on LinkedIn

Challenge

Challenge

Challenge

There is a need for new innovative substructure concepts, including floating platforms, to reduce production, installation and O&M costs for water depths of more than 50m.

OBJECTIVES:

• Optimize and qualify to a Technology Readiness Level – TRL of 5, two innovative substructure designs for 10MW turbines

• Develop a streamlined and KPI (key performance indicator) based methodology for the evaluation and qualification process of floating substructures

FOCUS:

– Floating wind turbines installed in water depths from 50m to 200m

– Offshore wind farms of large wind turbines (10MW) – identified to be the most effective way of reducing cost of energy in short term

 

 

Share on FacebookShare on Google+Tweet about this on TwitterShare on LinkedIn

DESIGN | JJ DESIGN    CODE | KONSULENTEN

Button contacts

Contact us


Ingvil Snøfugl

Ingvil Snøfugl

Communication Manager


Mobile: +47 957 70 133

Ingvil.Snofugl@marintek.sintef.no

Jan_Arthur_Norbeck

Jan Arthur Norbeck

Project Manager


Mobile: +47 951 10 424

JanArthur.Norbeck@marintek.sintef.no

Petter_Andreas_Berthelsen

Petter Andreas Berthelsen

Project Coordinator


Mobile: +47 952 22 139

PetterAndreas.Berthelsen@marintek.sintef.no