Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Connecting dead ends increases power grid stability

10.06.2014

Climate change mitigation strategies such as the German Energiewende require linking vast numbers of new power generation facilities to the grid.

As the input from many renewable sources is rather volatile, depending on how much the wind blows or the sun shines, there’s a higher risk of local power instabilities and eventually blackouts. Scientists from the Potsdam Institute for Climate Impact Research (PIK) now employed a novel concept from nonlinear systems analysis called basin stability to tackle this challenge. They found that connecting dead ends can significantly increase power grid stability. The findings are confirmed by a case study of the Scandinavian power system.

“The cheapest and thus widespread way to implement new generators into a high-voltage power grid is by simply adding single connections, like creating dead-end streets in a road network,” says Peter J. Menck, lead author of the study published in Nature Communications. To test the resulting system’s stability, the scientists simulated large perturbations in a standard electrical engineering model. “We found that in the power grid nodes close to the dead-end connections, the ability to withstand perturbations is largely reduced,” Menck says.

“Yet it turned out that this can be easily repaired by judiciously adding just a few transmission lines,” Menck says. Apparently, the provision of alternative routes in the network should allow for a dispersion of perturbation effects. Thereby, technical protection mechanisms at the different nodes of the grid can deal with problems, while dead ends make the effects culminate at single points of the network.

**Applying a novel mathematical concept for the first time**

These new insights are the result of applying for the first time the novel mathematical concept of basin stability developed at PIK. “From energy grids to the Amazon jungle or human body cells, systems possess multiple stable states,” explains co-author Jürgen Kurths who leads the institute’s research domain 'Transdisciplinary Methods and Concepts'. “To understand blackouts, forest dieback, or cancer, it is crucial to quantify the stability of a system – and that’s precisely what we’re now able to do.”

The concept conceives a system’s alternative states as points in a mountainous landscape with steep rocks and deep valleys. The likelihood that a system returns to a specific sink after suffering a severe blow depends on how big this basin is. “We’re putting numbers on this,” says Kurths.

**Compared to the costs of a blackout, adding lines would be affordable**

“Compared to the potential costs of a blackout, adding a few transmission lines would definitely be affordable,” says co-author Hans Joachim Schellnhuber, director of PIK. “The new study gives just one example that innovative solutions, in our case even based on already existing technology, can indeed help master the transformation of our energy system, for many good reasons such as climate stabilization.”

Article: Menck, P.J., Heitzig, J., Kurths, J., Schellnhuber, H.J. (2014): How dead ends undermine power grid stability. Nature Communications [DOI:10.1038/ncomms4969]

Weblink to the article: http://www.nature.com/ncomms/2014/140609/ncomms4969/full/ncomms4969.html

Weblink to a related study on the concept of basin stability: http://www.pik-potsdam.de/news/press-releases/vom-regenwald-des-amazonas-bis-zu-...

For further information please contact:
PIK press office
Phone: +49 331 288 25 07
E-Mail: press@pik-potsdam.de

Jonas Viering | PIK Potsdam

More articles from Power and Electrical Engineering:

nachricht Linear potentiometer LRW2/3 - Maximum precision with many measuring points
17.05.2017 | WayCon Positionsmesstechnik GmbH

nachricht First flat lens for immersion microscope provides alternative to centuries-old technique
17.05.2017 | Harvard John A. Paulson School of Engineering and Applied Sciences

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: Can the immune system be boosted against Staphylococcus aureus by delivery of messenger RNA?

Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.

Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....

Im Focus: A quantum walk of photons

Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.

The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

Im Focus: World's thinnest hologram paves path to new 3-D world

Nano-hologram paves way for integration of 3-D holography into everyday electronics

An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

 
Latest News

How herpesviruses win the footrace against the immune system

26.05.2017 | Life Sciences

Water forms 'spine of hydration' around DNA, group finds

26.05.2017 | Life Sciences

First Juno science results supported by University of Leicester's Jupiter 'forecast'

26.05.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>