Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Grid-Supportive Buildings Give Boost to Renewable Energy Integration

12.04.2016

Fraunhofer ISE Presents New Research Results at the Berlin ENERGY DAYS

The Fraunhofer Institute for Solar Energy Systems ISE presents its newest results on grid-supportive buildings and urban quarters at the Berlin ENERGY DAYS on April 12, 2016. Prof. Dr. Hans-Martin Henning, deputy director of Fraunhofer ISE, will give a talk demonstrating how building mass and technical storage help to smooth out the fluctuations from renewable energy. This presentation is part of a workshop, organized by Fraunhofer ISE, Fraunhofer IBP and RWTH Aachen.


This laboratory building at Fraunhofer ISE is equipped with cold water storage and serves as a demonstrator for grid-supportive operation.

©Fraunhofer ISE

More information about the workshop can be found under the following link: http://www.energietage.de/details/va/2016-504.html

The number of renewable energy installations continues to expand worldwide. In Germany the installed power of wind and photovoltaics increased from 54 GW in 2011 up to 83 GW in 2014/15, a value equivalent to the peak load in the German electricity grid.

With an increasing share of renewables in the energy supply, times occur when there is a surplus of renewable electricity, but also when peak load power plants, fired by fossil fuels with high emissions, are needed to produce electricity. Since electricity is difficult to store, the best case is to maintain the balance between electricity production and consumption. There are several options for flexibility such as demand-side operation of conventional power plants and CHP systems; load management where consumers in households, businesses and industry are temporarily shut-down; short term storage; and, as a measure in the medium to long term, the production of synthetic chemical energy carriers (Power-to-Gas/Power-to-Liquid) using surplus renewable electricity.

When the total building performance conforms to the targeted load management goals, the building is called “grid-supportive.” “We are researching three basic approaches to increase the grid-supporting capacity of buildings,” says Dr. Doreen Kalz, group head of Building Analysis and Energy Concepts at Fraunhofer ISE. “Firstly, one can switch between different heating and cooling supplies, e. g. between an electric heat pump and a gas-fired condensing boiler.

The second approach uses energy storage technologies such as battery storage or thermal heat storage. At times of surplus electricity, for example, an electric heat pump can be used to produce heat which is sent to a buffer storage tank. In the third approach, the surplus heat or cold is stored in the thermal mass of the building itself, whereby the massive building components are thermally activated by so-called “Thermally Active Building Component Systems,” or TABS.

In order to compare the grid-supporting properties of different buildings, the researchers developed two parameters: an absolute and a relative Grid Support Coefficient (GSCabs and GSCrel). The GSCabs weighs the electricity consumption with a grid-based reference parameter, i. e. an electricity price signal. The GSCrel translates this amount to a scale of -100 (worst case) to +100 (best case) which indicates the present potential for optimization.

An evaluation of 52 existing plants showed that the majority of systems today operate with either a negative or neutral impact on the grid. For two systems that were analyzed in more detail, the grid-support factor could be increased to a value of +70 by implementing a new control strategy that considers the electricity price on the EEX electricity market.

In the workshop taking place at the Berlin ENERGY DAYS, the results from four years of research in the “Netzreaktive Gebäude” project (Grid-supportive buildings) will be presented. The project was supported by the German Federal Ministry for Economic Affairs and Energy (BMWi). Project partners are the Fraunhofer Institute for Solar Energy Systems ISE, the Fraunhofer Institute for Building Physics IBP in Kassel and the E.ON Energy Research Center of RWTH Aachen.

The researchers conclude: To achieve grid-supportive operation, it is important to initially define one’s individual goal: for example, high revenues from electricity sales, provision of standby energy, ease the burden of the distribution grid or increase the percentage of renewables in the fulfillment of demand.

Grid-support does not stop at buildings: Urban quarters, city districts and regions can also be of service to the grid. Ultimately grid-support is a Europe-wide issue that is being addressed by the International Energy Agency IEA in the Working Group Annex 67. At Fraunhofer ISE, the work on this topic is being continued in the new “FlexControl” project, also sponsored by the federal ministry BMWi. The new project makes a contribution towards ensuring that a stable electricity grid and the continual growth of renewable energy capacity go hand in hand.

Background Material:

The study “What Will the Energy Transformation Cost? Pathways for Transforming the German Energy System by 2050”: https://www.ise.fraunhofer.de/en/publications/studies/what-will-the-energy-trans...

Project “Netzreaktive Gebäude” (Grid-supportive buildings): http://www.netzreaktivegebaeude.de/ (only in German)

ANNEX67: Energy Flexible Buildings: http://www.iea-ebc.org/projects/ongoing-projects/ebc-annex-67/

Weitere Informationen:

http://www.ise.fraunhofer.de/en
http://www.ibp.fraunhofer.de/en.html
https://www.eonerc.rwth-aachen.de/cms/~dmud/E-ON-ERC/?lidx=1

Karin Schneider | Fraunhofer-Institut für Solare Energiesysteme ISE

More articles from Event News:

nachricht Leading experts in Diabetes, Metabolism and Biomedical Engineering discuss Precision Medicine
13.07.2018 | Helmholtz Zentrum München - Deutsches Forschungszentrum für Gesundheit und Umwelt

nachricht Conference on Laser Polishing – LaP: Fine Tuning for Surfaces
12.07.2018 | Fraunhofer-Institut für Lasertechnik ILT

All articles from Event News >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

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....

Im Focus: Chemical reactions in the light of ultrashort X-ray pulses from free-electron lasers

Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.

Free-electron lasers (FELs) generate extremely short and intense X-ray flashes. Researchers can use these flashes to resolve structures with diameters on the...

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

Nano-kirigami: 'Paper-cut' provides model for 3D intelligent nanofabrication

16.07.2018 | Physics and Astronomy

New players, standardization and digitalization for more rail freight transport

16.07.2018 | Transportation and Logistics

Researchers discover natural product that could lead to new class of commercial herbicide

16.07.2018 | Agricultural and Forestry Science

VideoLinks
Science & Research
Overview of more VideoLinks >>>