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LORC tests and demonstrates technology for harvesting renewable energy offshore

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Meeting industry’s needs for environmental testing of large components for offshore use is now one step closer with the ordering of a climatic chamber for a new LORC test centre.

Read more about the environmental testing of structures here

 

 

 

Test bench for the giants of the ocean

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onsdag 20. april 2011

Strong back up from the world-leading Danish wind industry

The major offshore companies globally are represented in the LORC Board:

• Vestas Offshore A/S,
• Siemens Wind Power A/S,
• Dong Energy A/S,
• Vattenfall Vindkraft,
• Wave Star A/S
• A. P. Møller-Mærsk

In addition to this, LORC has a wide network of companies that share knowledge. Both producers of offshore installations and contractors are represented in the inner circle around LORC

Sustainability is hardheaded business. In order to lower the Cost of Energy, more and better testing is needed. The world’s largest and most advanced test bench for the future 10MW wind turbines is underway. LORC – Lindoe Offshore Renewables Center and Risoe DTU are the driving force behind the project which also includes resources from a number of private enterprises.

By Anne Korsgaard
It is out there in the blue ocean that Europe can find solutions to achieve two of its goals: energy independence from other countries and the vitally important slowdown of climate change. A collaboration that uses the synergies between industry, public authorities and academia is crucial in order to qualify facilities for testing the devices that extract green energy. This is exactly the philosophy behind the establishment of the Lindoe Nacelle Testing, the world’s largest and smartest test bench for wind turbines of up to 10MW.

- The Lindoe Nacelle Testing (LNT) will be central to the efforts to minimize flaws in future wind turbines. And it will be crucial in bringing down Cost of Energy from renewable offshore resources. The test bench is going to meet the demands of a long list of commercial partners in the offshore wind sector as there is a need to test both electrical and mechanical components in the turbine together under a realistic simulation of operational conditions, says Chairman of the LORC Board and former Prime Minister of Denmark, Poul Nyrup Rasmussen.

The design of the LNT happens in close cooperation between the industry and the research institutes such as Risø DTU, Siemens Wind Power, Vestas Offshore, Vattenfall Vindkraft and DONG Energy.

Torben Kenneth Hansen, Manager, Teechnical Risk Management at DONG Energy Renewables, expresses his support for the new and more advanced test bench:

- The Lindoe Nacelle Testing will make it possible to perform an effcient preinstallation verification which has never been possible before. The bench will to a certain extent replace testing at the test site, where it is diffcult and slow, and thus expensive, to make tests. It will now be possible to make a 50 year simulation of wind loads and other extreme conditions (temperature, turbulence, moisture, etc.) that one would be very lucky to have at a test site. The test bench can also verify models of calculation, which should lead to improved models.

Odense Steel Shipyard at Lindoe: The expertise at hand in areas like welding, designing, and production planning is world class.

Unique electrical testing of the turbine
One of the characteristics that make LNT unique is the ability to simulate the way the electrical grid performs in real life.

- The test bench will introduce a grid simulator that enables grid code tests. For instance the testing of voltage dips also called low voltage ride through (LVRT) and temporary over-voltage (TOV) will be included in LNT. This ensures a reliable test outcome. In the United States and other places in the world 60 Hz is the nominel frequency of the electrical grid. LNT controls the frequency and can thus simulate both 60 Hz and 50 Hz grids. This means that the global producers of wind turbines will have access to our test facilities to ensure that their designs are also tested for the overseas market, explains Lars Rasmussen, Senior Specialist B.Sc. and responsible for the electrical design of LNT.

Ideal infrastructure and expertise at hand
It has been a core concern for LORC that the test bench will be a commercial test facility open and accessible for the global wind energy sector. And with its geographical placement near the North Sea, that is fully achieved since wind turbines, towers, and foundations can be easily transported to the globally recognized Odense Steel Shipyard.

Not only are the facilities world class, but so is the expertise at hand in areas like welding, designing, and production planning. The world’s largest container ships have been built at Odense Steel Shipyard where LORC operates the Lindoe Nacelle Testing and a range of other test facilities in close cooperation with industry and academia.

- There is no doubt that the close cooperation with several major competitors in the wind industry is vital to the success of LORC’s test facilities. It also proves that there is a need for improved test facilities and a need for a world class center for test and innovation of green offshore technology in Europe, says Poul Nyrup Rasmussen.

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