This technology exploits the network's efficiency potential and makes it easier to integrate decentralized generation such as small hydroelectric power plants and solar parks. The core of this solution is the Software that monitors the current state of the network. Based in the surveillance information the network can be automatically adjusted to an optimal level.
With this system electric utilities can supply more consumers with the existing network and have more flexibility in the integration of distributed generation. Until now, extra power could only be fed into the network at points where the grid voltage is not incorrectly affected.
Occasionally this requires long connection cables with high connection costs which are hindering the expansion of renewable energy. Since January, the grid in Lungau in the Austrian state of Salzburg has been regulated automatically.
Within the power system, only the complete high-voltage network is automatically regulated and controlled today. Due to the increasing number of energy sources feeding into the medium and low voltage networks, these elements need to become more intelligent as well. Networks could then react flexibly, like the links in a chain.
A medium-voltage distribution network carries voltage ranging from 1 kilovolt (kV) to around 75 kV. Until now, the data needed to actively maintain the voltage within an allowed voltage range has been lacking. Instead, network voltage is periodically set using calculations based on simulated worst case scenarios. As result the network voltage is kept in the upper part of the voltage range in order to maintain an appropriate safety margin.
The Siemens software uses little measurement data to reliably calculate the steady state of the whole network. Based on this information, optimization software can automatically regulate the voltage and dynamically optimize the grid. For example, to properly adjust the network voltage, the small power plants' generators can be operated to produce or absorb reactive power. The network is reacting flexibly to distributed generation and it can be fully operated at a tolerable lower voltage level.
The automation of middle voltage network is a central step toward creating smart grids. Siemens developed this technology together with Salzburg Netz GmbH as part of the Austrian industrial research project ZUQDE which was funded by the Austrian climate and energy fonds.
Dr. Norbert Aschenbrenner | Siemens InnovationNews
Multiregional brain on a chip
16.01.2017 | Harvard John A. Paulson School of Engineering and Applied Sciences
Researchers develop environmentally friendly soy air filter
16.01.2017 | Washington State University
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).
Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...
Many pathogens use certain sugar compounds from their host to help conceal themselves against the immune system. Scientists at the University of Bonn have now, in cooperation with researchers at the University of York in the United Kingdom, analyzed the dynamics of a bacterial molecule that is involved in this process. They demonstrate that the protein grabs onto the sugar molecule with a Pac Man-like chewing motion and holds it until it can be used. Their results could help design therapeutics that could make the protein poorer at grabbing and holding and hence compromise the pathogen in the host. The study has now been published in “Biophysical Journal”.
The cells of the mouth, nose and intestinal mucosa produce large quantities of a chemical called sialic acid. Many bacteria possess a special transport system...
10.01.2017 | Event News
09.01.2017 | Event News
05.01.2017 | Event News
17.01.2017 | Earth Sciences
17.01.2017 | Materials Sciences
17.01.2017 | Architecture and Construction