Post on 17-Dec-2015
© Siemens AG 2011
Hull Offshore Wind Workshop Siemens Wind Power A/S, Thomas Mousten, Offshore Wind Americas
© Siemens AG 2011
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Size of offshore
wind farms (MW)
Water depths
(m)
Distance to shore
(km)
Rating
(MW)
Rotor Diameter
Range (m)
> 30> 30155
open> 500906
> 7035122
> 63,630,5
>1501208237
2020s2010s2000s1990s
Size of offshore
wind farms (MW)
Water depths
(m)
Distance to shore
(km)
Rating
(MW)
Rotor Diameter
Range (m)
> 30> 30155
open> 500906
> 7035122
> 63,630,5
>1501208237
2020s2010s2000s1990s
Longer and Lighter Blades
Trends in Offshore Wind Turbine Technology-Hub height & Rotor sizes
WTG’s are getting larger and are installed farther off shore and in locations with deeper water depths
The offshore wind industry is currently offering blades in the 120m range
Indications are pointing towards rotors in the >150m range for offshore turbines.
Siemens Wind Power followed this trend with the SWT 3.6-120MW
Tests indicate that the new machine will generate approx. 10% more electricity in comparison to similar wind turbines.
The turbine towers are becoming taller as a consequence of the larger rotors.
Financial modeling also shows benefits from taller towers due to better wind resources but is also associated with higher costs for foundation and tower construction.
© Siemens AG 2011
Trends in Offshore Wind Turbine Technology-Optimization of Availability
The TCM® system allows for the continuous online vibration monitoring of the wind turbine with 6 sensors and allows for the assessment of:
Gearbox Main bearing Generator
Turbine Condition Monitoring (TCM®)
The purpose of the TCM® system is to: Optimize the planning of service works, reduce service costs and down time Perform preventive repair of components before breakdown – automatic stop
of wind turbine in case of excess of vibration limits Improves possibilities for further technical development
© Siemens AG 2011
Picture from installation to follow
Facts
Our strategy for technology leadershipSWT-3.0-101
3.0 MW gearless direct drive turbine Rotor diameter: 101 m No gear box Reduced number of parts Reduced maintenance costs Synchronous permanent magnet generator High efficiency Compact design allows for easier transportation and
installation
The 6-MW direct drive wind turbine will be launched later this year
Will be particularly suitable for large offshore wind
power plants
© Siemens AG 2011
Trends in Offshore Wind Turbine Technology-Foundations
0 - 10
Monopiles
Gravity
10 - 35
Monopiles
Jackets
From 35
Jackets
Floating (future)
Water depth (m)
Foundation type
Foundation : monopiles not necessarily the suitable solution
Tower interface : two potential cost saving solutions
Having one structure: More even distribution of stiffness steel reduction
Improving arrangements (secondary steel):Specific offshore interface design (flanges, platforms, lay down area, access, etc) steel reduction
Foundation type Cost saving potential
Monopiles Known technology
Gravity Known technology
Jackets
Less steel
Stiffer structure
Not yet industrialized
FloatingPotential future concept for deeppositions
Monopiles
Gravity
Jackets
Floating
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Hywind: An example of how we are tackling trends in offshore wind
Cooperation on technology with Statoil to develop the world's first floating offshore installation
In 2009 Siemens installed the first wind turbine for the demonstration unit off the coast of Norway
Floating offshore turbines could be installed at sites with greater water depths
Hywind
Source: SWP
© Siemens AG 2011
Trends in the offshore Balance of Plant-Vessels
Able to install turbine quickly
Able to install pre-commissioned components
Working year round even in high down time period
Designed for specific purpose
Future vessels need to be…
Purpose build vessel is a key component in a project
To ensure vessel availability in the US:
Short term the Jones Act needs to allow for foreign build vessels; either in general or be project specific waivers
Long term U.S. shipyards and/or ship operators should team up with European experience and start installation vessels development in the U.S.
© Siemens AG 2011
Offshore port requirements:
Unrestricted access to, and permit to work in the area, 24/7 and 365 days a year
A contiguous piece of level land with a total area of 2000 m2 per turbine (min. 50000 m2)
Suitable water depths at the load-in quay of ~ 10m allowing ocean-going coasters (cargo vessels)
Indoor high ceiling storage
Good infrastructure within the construction area and the quay side
Utilities: Power, water, internet and phone
Trends in the offshore Balance of Plant-Ports