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 ICTM Conference 2017: Production technology for turbomachine manufacturing of the future
16.11.2016 | Fraunhofer-Institut für Produktionstechnologie IPT

nachricht Innovation Day Laser Technology – Laser Additive Manufacturing
01.11.2016 | Laser Zentrum Hannover e.V.

All articles from Event News >>>

The most recent press releases about innovation >>>

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

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

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...

Im Focus: Quantum Particles Form Droplets

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...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

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,...

Im Focus: Molecules change shape when wet

Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water

In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...

Im Focus: Fraunhofer ISE Develops Highly Compact, High Frequency DC/DC Converter for Aviation

The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.

Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

UTSA study describes new minimally invasive device to treat cancer and other illnesses

02.12.2016 | Medical Engineering

Plasma-zapping process could yield trans fat-free soybean oil product

02.12.2016 | Agricultural and Forestry Science

What do Netflix, Google and planetary systems have in common?

02.12.2016 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>