Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Computer Model Optimizes Wind Farm

01.08.2011
A new software from Siemens will improve wind farms’ energy yields and extend their service life.

When the wind causes the huge rotors to turn, it generates turbulence, which interferes with the operation of the wind turbines in the rows to the rear. To address this problem, the new software program simulates the behavior of the entire wind farm and adjusts the individual turbines’ performance with one another.


According to experts, this could increase the energy yield by several percent, as reported in the latest issue of the research magazine "Pictures of the Future". The same method could also be used to reduce the mechanical stress on the wind turbines, thus extending their service life. The software is currently undergoing endurance testing at Sweden’s Lillgrund wind farm.

Offshore wind turbines are gigantic; the 48 Siemens turbines in Lillgrund tower 115 meters above the water’s surface. The rotors have a diameter of 93 meters, and the wind causes them to create kilometer-long trails of turbulence. As a result, turbines located behind the first row can’t operate smoothly, causing their electricity output to fluctuate. In addition, the turbulence makes the turbines vibrate, which accelerates the process of wear and tear. A wind turbine is designed to operate for about 20 years. If it can run longer than that, the wind farm can supply more energy without requiring any additional investment.

Researchers at Siemens Corporate Technology have now developed a computer model that simulates entire wind farms. Using measurements of wind and rotor speeds, temperature, and turbine output, the software calculates airflows and determines the behavior of all of the turbines, enabling it to set the parameters for operating the wind turbines with as little turbulence as possible. The turbines’ output is adjusted by means of the generators and the angle of the rotor blades. To make this possible, all of the turbines are connected to a central control system via optical fiber lines. Even though the system reduces the output of individual wind turbines, it increases the yield of the wind farm as a whole and ensures that turbines located farther back are subjected to less strain. Operators can use the program to optimize either the energy yield or the service life. Alternatively, they can use it to optimally balance both of these parameters with each other.

Siemens Wind Power has been testing the software in Lillgrund for the past two years. In the fall the model will be optimized on the basis of the collected measurement data, to be followed by a pilot phase. Offshore wind farms are part of Siemens’ environmental portfolio, with which the company generated about €28 billion in sales in fiscal year 2010.

Dr. Norbert Aschenbrenner | Siemens ResearchNews
Further information:
http://www.siemens.com/researchnews

More articles from Power and Electrical Engineering:

nachricht ISFH-CalTeC is “designated test centre” for the confirmation of solar cell world records
16.01.2018 | Institut für Solarenergieforschung GmbH

nachricht A water-based, rechargeable battery
09.01.2018 | Empa - Eidgenössische Materialprüfungs- und Forschungsanstalt

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Scientists decipher key principle behind reaction of metalloenzymes

So-called pre-distorted states accelerate photochemical reactions too

What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...

Im Focus: The first precise measurement of a single molecule's effective charge

For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.

Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...

Im Focus: Paradigm shift in Paris: Encouraging an holistic view of laser machining

At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.

No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...

Im Focus: Room-temperature multiferroic thin films and their properties

Scientists at Tokyo Institute of Technology (Tokyo Tech) and Tohoku University have developed high-quality GFO epitaxial films and systematically investigated their ferroelectric and ferromagnetic properties. They also demonstrated the room-temperature magnetocapacitance effects of these GFO thin films.

Multiferroic materials show magnetically driven ferroelectricity. They are attracting increasing attention because of their fascinating properties such as...

Im Focus: A thermometer for the oceans

Measurement of noble gases in Antarctic ice cores

The oceans are the largest global heat reservoir. As a result of man-made global warming, the temperature in the global climate system increases; around 90% of...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

10th International Symposium: “Advanced Battery Power – Kraftwerk Batterie” Münster, 10-11 April 2018

08.01.2018 | Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

 
Latest News

Polymers Based on Boron?

18.01.2018 | Life Sciences

Bioengineered soft microfibers improve T-cell production

18.01.2018 | Life Sciences

World’s oldest known oxygen oasis discovered

18.01.2018 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>