The aim is to provide a buffer against short-term fluctuations in output from renewable energy sources. Such fluctuations can last for seconds or several minutes long. The modular designed Siestorage battery is based on lithium-ion rechargeable battery technology and fits into a normal shipping container.
In its big layout it stores 500 kilowatt-hours of electricity. That's about the average daily power consumption of 50 households. The Italian power company Enel recently switched on the first Siestorage installation, which has a capacity of one megawatt. Enel is using the installation, which is connected to its primary distribution network, to study how voltage can be stabilized.
The electrical output of photovoltaic arrays doesn't only fluctuate with the seasons or between night and day. It's also affected by local weather. For example, power production sags for a few seconds (or even minutes) if clouds drift over the modules. Consequently, the grid experiences brief drops in voltage. Energy storage devices deal with these fluctuations within milliseconds in the power grid itself. As a result, there's no need to adjust controls at power stations - a procedure that reduces efficiency and increases costs.
During development, Siemens worked together with one of the world's largest manufacturers of lithium-ion batteries. Thanks to the system's modular design, its capacity can be expanded to two megawatt hours at an output of 8 megawatts. The complete solution with the inverter module and the controller that connect the system to the grid are from Siemens.
Enel will also study how well the system can handle a controlled restart of a grid after a complete blackout. To achieve this feat, the system's inverter has to regulate the right voltage and frequency so that the grid can be powered up in a controlled manner. Such a solution would be very interesting for small independent power grids on islands or in remote areas, which would otherwise have to be connected to neighboring grids.
Energy storage systems form part of Siemens solutions for tomorrow's smart grid. They are part of Siemens' environmental portfolio, with which the company generated about €30 billion in sales in 2011.
Dr. Norbert Aschenbrenner | Siemens InnovationNews
Robot on demand: Mobile machining of aircraft components with high precision
06.12.2016 | Fraunhofer IFAM
IHP presents the fastest silicon-based transistor in the world
05.12.2016 | IHP - Leibniz-Institut für innovative Mikroelektronik
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
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07.12.2016 | Health and Medicine
07.12.2016 | Life Sciences
07.12.2016 | Health and Medicine