Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Network Stability through Automatic Load Shedding

05.11.2012
Siemens is stabilizing the power supply systems at major industrial facilities.

With an automatic load shedding technology - in other words a regulated interruption of power to consumers - the balance in a power grid can be maintained.


Siemens has developed an automatic load shedding system for the power supply of large-scale industrial plants in the oil and gas industry, helping to stabilize the networks in critical situations.

This solution is intended primarily for use in the oil and gas industries, whose drilling and production facilities are often equipped with their own power plants and grids. As in every power grid, island-capable networks must also be able to maintain a constant balance between the generation and the consumption of electricity.

If the balance is disturbed - for example, if a large consumer shuts down because of a failure - the whole network can collapse in a worst case scenario. An interruption of only an hour at a large refinery or an LPG facility can already cause millions of euros in costs. Automatic load shedding prevents shutdowns by disconnecting consumers according to specific priorities until the grid obtains a level at which it can remain stable.

Until now, when a disruption occurred - for example, if the network frequency dropped - load shedding systems have shut down pre-determined consumers. Sometimes, this meant that too much load was shed, and the network remained out of balance.

Other units of equipment would then fail, leading to a complete shut down. For automatic load shedding, all of the possible disruption patterns are worked out ahead. The aim is to determine which consumers need to be disconnected in order to keep the grid stable. The highest priority is to keep production running smoothly.

In other words, air conditioners, lighting, and other non-critical devices are the first to be taken offline. When a disruption occurs, the load shedding system recognizes which scenario it is dealing with based on data from the grid and shuts down the appropriate consumers in less than a tenth of a second.

Short reaction times are achieved using glass-fiber Ethernet and GOOSE-Telegramme - special communication services that enable rapid communication across the entire network. As a prerequisite, the system had to be designed according to the IEC 61850 communication standard for energy systems. This rapid shutdown is supported by dynamic load shedding in which the system determines performance reserves.

As a reserve function, additional frequency-dependent load shedding ensures the highest level of operational security. Because the new load shedding technology is based on the Siemens control system for energy systems, installation does not result in costs for additional equipment.

Dr. Norbert Aschenbrenner | Siemens InnovationNews
Further information:
http://www.siemens.com/innovationnews

More articles from Power and Electrical Engineering:

nachricht A smart safe rechargeable zinc ion battery based on sol-gel transition electrolytes
20.07.2018 | Science China Press

nachricht Future electronic components to be printed like newspapers
20.07.2018 | Purdue University

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: Future electronic components to be printed like newspapers

A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.

The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...

Im Focus: First evidence on the source of extragalactic particles

For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.

To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...

Im Focus: Magnetic vortices: Two independent magnetic skyrmion phases discovered in a single material

For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.

Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...

Im Focus: Breaking the bond: To take part or not?

Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.

A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...

Im Focus: New 2D Spectroscopy Methods

Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.

"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Leading experts in Diabetes, Metabolism and Biomedical Engineering discuss Precision Medicine

13.07.2018 | Event News

Conference on Laser Polishing – LaP: Fine Tuning for Surfaces

12.07.2018 | Event News

11th European Wood-based Panel Symposium 2018: Meeting point for the wood-based materials industry

03.07.2018 | Event News

 
Latest News

The Maturation Pattern of the Hippocampus Drives Human Memory Deve

23.07.2018 | Science Education

FAU researchers identify Parkinson's disease as a possible autoimmune disease

23.07.2018 | Health and Medicine

O2 stable hydrogenases for applications

23.07.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>