Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New wind energy predictions save millions

11.01.2006


Risø National Laboratory, Technical University of Denmark, The Danish Meteorological Institute, Elsam and Energi E2 in Denmark have jointly developed a new method for predicting the energy produced by wind turbines. The method will save millions for electricity producers and consumers



In Denmark more than 5,000 wind turbines produce an average of more than 20 per cent of the Danish power consumption.

The electric utilities must supplement wind energy production with power from the liberalised electricity market. If they buy too much they have to sell the surplus power cheaply, and if they buy too little they have to buy extra at additional cost. It is thus extremely important to know precisely the volume of power, which the turbines are expected to generate, preferably a number of days ahead.


For more than ten years, scientists from Risø and from the Department of Informatics and Mathematical Modelling (IMM) at the Technical University of Denmark, DTU, have provided wind energy predictions to the electric utilities 48 hours ahead. These predictions have been based on meteorological data from the Danish Meteorological Institute, DMI, and local conditions. A new class of models is now also able to predict the uncertainty of the prediction up to a week ahead. The uncertainties are calculated by including predictions from many meteorological models or model runs, a so-called ensemble of meteorological models. The new models are thus able to predict the amount of the energy production in the coming week at a certain location, e.g., a wind farm or an entire region, and make an uncertainty estimate for that particular prediction.

The models for predicting wind energy are primarily supplied to electricity utilities which in this way know how much power they need to purchase on the liberalised electricity market in order to meet demand and ensure a stable power supply.

“The models allow the electricity utilities to save money”, says Gregor Giebel, Senior Scientist at Risø. “In Denmark, the electricity utilities must typically trade power for the next 24 hours by 12 noon the previous day. With a certain prognosis, the utilities are able to plan optimally and if it is uncertain, they need to have costly backup reserves.” However, Gregor Giebel points out that this is a financial game which will not result in the consumers being without power. Conversely, good prognoses help reduce the electricity price and the risk of power outages. Moreover, the new prognoses can be used to predict fuel consumption at power plants, or to decide when to disconnect a unit from the system for maintenance.

Gregor Giebel | alfa
Further information:
http://www.risoe.dk
http://www.risoe.dk/rispubl/VEA/ris-r-1527.htm) or read more at http://www.risoe.dk/zephyr/

More articles from Power and Electrical Engineering:

nachricht Fraunhofer ISE Supports Market Development of Solar Thermal Power Plants in the MENA Region
21.02.2018 | Fraunhofer-Institut für Solare Energiesysteme ISE

nachricht New tech for commercial Lithium-ion batteries finds they can be charged 5 times fast
20.02.2018 | University of Warwick

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: Attoseconds break into atomic interior

A newly developed laser technology has enabled physicists in the Laboratory for Attosecond Physics (jointly run by LMU Munich and the Max Planck Institute of Quantum Optics) to generate attosecond bursts of high-energy photons of unprecedented intensity. This has made it possible to observe the interaction of multiple photons in a single such pulse with electrons in the inner orbital shell of an atom.

In order to observe the ultrafast electron motion in the inner shells of atoms with short light pulses, the pulses must not only be ultrashort, but very...

Im Focus: Good vibrations feel the force

A group of researchers led by Andrea Cavalleri at the Max Planck Institute for Structure and Dynamics of Matter (MPSD) in Hamburg has demonstrated a new method enabling precise measurements of the interatomic forces that hold crystalline solids together. The paper Probing the Interatomic Potential of Solids by Strong-Field Nonlinear Phononics, published online in Nature, explains how a terahertz-frequency laser pulse can drive very large deformations of the crystal.

By measuring the highly unusual atomic trajectories under extreme electromagnetic transients, the MPSD group could reconstruct how rigid the atomic bonds are...

Im Focus: Developing reliable quantum computers

International research team makes important step on the path to solving certification problems

Quantum computers may one day solve algorithmic problems which even the biggest supercomputers today can’t manage. But how do you test a quantum computer to...

Im Focus: In best circles: First integrated circuit from self-assembled polymer

For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.

In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...

Im Focus: Demonstration of a single molecule piezoelectric effect

Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale

Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

2nd International Conference on High Temperature Shape Memory Alloys (HTSMAs)

15.02.2018 | Event News

Aachen DC Grid Summit 2018

13.02.2018 | Event News

How Global Climate Policy Can Learn from the Energy Transition

12.02.2018 | Event News

 
Latest News

Basque researchers turn light upside down

23.02.2018 | Physics and Astronomy

Finnish research group discovers a new immune system regulator

23.02.2018 | Health and Medicine

Attoseconds break into atomic interior

23.02.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>