1. Optimising the installation phase of wind turbines in deep water
Dimitrios Anagnostaras, Beatriz Navas, Lars Eichler, Niall Mackay, Roman Perez

2. Outline Project Aim The Problem Our Solution Outcomes Conclusion 1
Engineering
Outline
Project Aim
The Problem
Our Solution
Outcomes
Conclusion
Project Aim
The Problem
Our Solution
Outcomes
Conclusion 1

3. Engineering
Project Aim
Project Aim
The Problem
Our Solution
Outcomes
Conclusion
Develop a concept to optimise the installation phase of wind turbines in deep water
Technical Analysis
Financial Analysis
Environmental Analysis 2

4. Why Going Deep? 3 Project Aim The Problem Our Solution Outcomes
Engineering
Why Going Deep?
Project Aim
The Problem
Our Solution
Outcomes
Conclusion
Source: Bathymetry, 2014 3

5. Foundation Types 4 Project Aim The Problem Our Solution Outcomes
Engineering
Foundation Types
Project Aim
The Problem
Our Solution
Outcomes
Conclusion
max. 30m
max. 100m
max m
max. 450m 4
Source: Springer, 2014; Data: Carbon Trust, 2015

6. The Hywind Challenge Assembled near - shore
Engineering
The Hywind Challenge
Project Aim
The Problem
Our Solution
Outcomes
Conclusion
Assembled near - shore
Min. depth of 80m
Weather protected
Components are either wet / dry towed
2 x cranes required
Vertically towed to site 
Source: Hywind, 2015
Source: Hywind, 2015 5

7. Problems 6 Project Aim The Problem Our Solution Outcomes Conclusion
Engineering
Problems
Project Aim
The Problem
Our Solution
Outcomes
Conclusion
- Better picture 6
Source: Hywind, 2015

8. Concept 7 Project Aim The Problem Our Solution Outcomes Conclusion
Engineering
Concept
Project Aim
The Problem
Our Solution
Outcomes
Conclusion 7

9. Concept 8 Project Aim The Problem Our Solution Outcomes Conclusion
Engineering
Concept
Project Aim
The Problem
Our Solution
Outcomes
Conclusion 8

10. Airbags 9 Project Aim The Problem Our Solution Outcomes Conclusion
Engineering
Airbags
Project Aim
The Problem
Our Solution
Outcomes
Conclusion 9
Source: Made-in-China, 2015

11. Barges 10 Project Aim The Problem Our Solution Outcomes Conclusion
Engineering
Barges
Project Aim
The Problem
Our Solution
Outcomes
Conclusion 10
Source: Crowley, 2016

12. How does it work? 11 Project Aim The Problem Our Solution Outcomes
Engineering
How does it work?
Project Aim
The Problem
Our Solution
Outcomes
Conclusion 11

13. Technical Analysis Level 1: Excel Level 2: ANSYS
Engineering
Technical Analysis
Project Aim
The Problem
Our Solution
Outcomes
Conclusion
Level 1: Excel
Gravity Centre variation
Shear Force distribution
Bending Moment distribution
Level 2: ANSYS
Structural analysis 12

14. TA: Level 1 Change in the “Centre of Gravity”
Engineering
TA: Level 1
Project Aim
The Problem
Our Solution
Outcomes
Conclusion
Change in the “Centre of Gravity”
GC: 128m during transport 13

15. TA: Level 1 Change in the “Centre of Gravity”
Engineering
TA: Level 1
Project Aim
The Problem
Our Solution
Outcomes
Conclusion
Change in the “Centre of Gravity”
GC: 93m when barge is removed 13

16. TA: Level 1 Change in the “Centre of Gravity”
Engineering
TA: Level 1
Project Aim
The Problem
Our Solution
Outcomes
Conclusion
Change in the “Centre of Gravity”
GC: 26m during installation 13

17. TA: Level 1 2.96 MN 14 Project Aim The Problem Our Solution Outcomes
Engineering
TA: Level 1
Project Aim
The Problem
Our Solution
Outcomes
Conclusion
2.96 MN 14

18. TA: Level 1 6.8 GNm 15 Project Aim The Problem Our Solution Outcomes
Engineering
TA: Level 1
Project Aim
The Problem
Our Solution
Outcomes
Conclusion
6.8 GNm 15

19. TA: Level 2 < Limit 400-550 MPa 16 Project Aim The Problem
Engineering
TA: Level 2
Project Aim
The Problem
Our Solution
Outcomes
Conclusion
< Limit MPa 16

20. Financial Analysis 17 Project Aim The Problem Our Solution Outcomes
Engineering
Financial Analysis
Project Aim
The Problem
Our Solution
Outcomes
Conclusion
Our Concept 17

21. Financial Analysis 52% 18 Project Aim The Problem Our Solution
Engineering
Financial Analysis
Project Aim
The Problem
Our Solution
Outcomes
Conclusion
52%
Current Method
Our Concept 18

22. Environmental Analysis
Engineering
Environmental Analysis
Project Aim
The Problem
Our Solution
Outcomes
Conclusion
Current Approach vs Our Concept
Main assembly onshore
Reduced emissions
E.g. reduced vessel activity
Reduced noise
Lower impact on marine mammals
Reduced visual impact
Source: PortStrategy, 2016 19

23. CO2-Case Study Tonnes of CO2 Current Method 20 Project Aim The Problem
Engineering
CO2-Case Study
Project Aim
The Problem
Our Solution
Outcomes
Conclusion
Tonnes of CO2
- Remove zeros on y axis
Current Method
Our Concept 20

24. Environmental Analysis
Engineering
Environmental Analysis
Project Aim
The Problem
Our Solution
Outcomes
Conclusion
Current Approach vs Our Concept
Main assembly onshore
Reduced emissions
E.g. reduced vessel activity
Reduced noise
Lower impact on marine mammals
Reduced visual impact
Source: Eichler, 2015 21

25. Conclusion Outcome: It works! Benefits
Engineering
Conclusion
Project Aim
The Problem
Our Solution
Outcomes
Conclusion
Outcome: It works!
Benefits
On-shore assembly of wind turbine
Reduction of required installation vessels
Increased operation window
Lower environmental impact
€ - Savings 22

26. Future Work Dynamic analysis Detailed design of components
Engineering
Future Work
Project Aim
The Problem
Our Solution
Outcomes
Conclusion
Dynamic analysis
wind impacts, hinge, etc.
Detailed design of components
Use concept for O&M
Operational window analysis 23

27. THE END 24 Project Aim The Problem Our Solution Outcomes Conclusion
Engineering
THE END
Project Aim
The Problem
Our Solution
Outcomes
Conclusion 24
Source: