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 International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open
20.03.2017 | Leibniz-Institut für ökologische Raumentwicklung e. V.

nachricht CONNECT 2017: International congress on connective tissue
14.03.2017 | Universität Ulm

All articles from Event News >>>

The most recent press releases about innovation >>>

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

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

Im Focus: Researchers Imitate Molecular Crowding in Cells

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

When Air is in Short Supply - Shedding light on plant stress reactions when oxygen runs short

23.03.2017 | Life Sciences

Researchers use light to remotely control curvature of plastics

23.03.2017 | Power and Electrical Engineering

Sea ice extent sinks to record lows at both poles

23.03.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>