Category Archives: Publikation

Projekt MONERGY – ICT Lösungen zur Energieeinsparung in Haushalten in Kärnten und Friaul-Julisch Venetien

Im MONERGY-Projekt wurden ICT Lösungen zur Energieeinsparung in Haushalten erarbeitet. Die Einsparung erfolgt vor allem durch ein “Smart Home”-Konzept, bei dem BewohnerInnen Unterstützung durch Messeinrichtungen, künstliche Intelligenz und visuelles Feedback bekommen. Da bei solchen Konzepten der Mensch Teil der Regelschleife ist, sind die spezifischen Aspekte der Energienutzung in der jeweiligen Region von großer Bedeutung – das heißt es ist vorab notwendig das Verhalten in den jeweiligen Zielregionen, im Projekt Monergy sind das Kärnten und Friaul-Julisch Venetien, zu erfassen. Da es für diese Regionen noch keine detaillierten Daten gab, wurde eine Messkampagne über die Dauer eines Jahres durchgeführt und, auch um anderen ForscherInnen den Einstieg zu erleichtern, die Ergebnisse öffentlich zugänglich gemacht.
Basierend auf diesen Ergebnissen konnten Mechanismen, Algorithmen und Geräte als Basis für ein effektives Energiemanagement entwickelt werden. Im Projekt sind hier die frei verfügbare Mjölnir-Software zum Aufau eines Energiemonitoringsystems, Algorithmen zur Load Disaggregation und ein Konzept für einen selbstorganisierenden Miniaturmarkt der Geräte hervorzuheben.

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Publikationen

Forschungstag “Energiemanagement und Technik” am 23.10.2014

Am 23.10 nutze der Energieclusters “Energiemanagement und Technik” eine Zusammenkunft zum Austausch von Ergebnissen und Ideen aus verschiedenen Disziplinen.

Im Rahmen dieser Veranstaltung wurden folgende Rahmenpunkte behandelt:

Die Papers zu den jeweiligen Themen stehen als Volltext zum Download zur Verfügung!

 

RAPSim – An open source simulation software for microgrids

It is not necessary to stress all the challenges that come allong with wide range integration of renewables into the power grid at this article. You easily find this somewhere else, in this blog or at another source in the web. But I want to focus your attention on a tool that can help to deal with this challenges and work torwards solutions. It is a lot on matching climate dependent production with the personal demand which is currently noticed only in average. The various influences on residential load profiles are diverse and include weather conditions, availability of other resources, personal habits and also social phenomenas. This variaty is a reason why Marija Ilic speaks of just-in-time and just-in-place services in the conntext of Smart Micro Grids.

Developing of or researching on such services requires a flexible simulation tool with possibly high usability. This is exactly what RAPSim is aiming at. RAPSim was presented in front of interested audience at the ISGT Asia – 2014 conference in Kuala Lumpur in May 2014. Since then the software project is downloadable for free at Sourceforge.net.

 

Connected Smart Grid Objects

The simulation field is a lattice where the user designs a scenario by placing different “grid objects”, e.g., houses, wind turbines, PV panels, etc. Each of the objects can have a model which does all the inner-object calculations. Algorithms handle grid-wide interactions. User-defined models can extend  algorithms for the grid and/or models for the grid objects. RAPSim provides the interface with following functions:

  • A graphical interface to create the intended scenarios and to control the simulator functions.
  • Functions to save and load simulation scenarios in a generic xml format.
  • A time thread that models time of day and day of the year and handles up to minute resolution.
  • Generation of output files in csv-format. Object parameters can be selected to be written into a file at each time step.
  • Weather simulation which can be done via stochastic models or simulated by measured data.
  • Topological grid analysis that collects objects of the same bus in a list and aggregates their parameter values.
  • Administration of algorithms for grid-wide calculations.
  • Administration of object specific models that can be easily implemented by the user.

The software is written in Java and provided with the source code so that it can be imported into a Java IDE such as eclipse. The development of the software is still ongoing. Try it out and give us feedback by adding a comment or sending a ticket to helps us to further improve it. Please spread the news about the tool, while we will do the best on our part so that onces RAPSim may become a synonym for rapid simulation in the field of mirco grids.
Once more here the link to the sourceforge page.

Publications on RAPSim (with links to fulltext PDF):

M. Pöchacker, T. Khatib, and W. Elmenreich. The microgrid simulation tool RAPSim: Description and case study. In Proceedings of the IEEE Innovative Smart Grid Technologies Asia (ISGT-ASIA’14), Kuala Lumpur, Malaysia, 2014. IEEE.

Integrating households into the smart grid

The success of the householdsSmart Grid depends on its ability to collect data from heterogeneous sources such as smart meters and smart appliances, as well as the utilization of this information to forecast energy demand and to provide value-added services to users. In our analysis, we discuss requirements for collecting and integrating household data within smart grid applications. We put forward a potential system architecture and report state- of-the-art technologies that can be deployed towards this vision.

A. Monacchi, D. Egarter, and W. Elmenreich. Integrating households into the smart grid. In Proceedings of the Workshop on Modeling and Simulation of Cyber-Physical Energy Systems (MSCPES13’13), Berkeley, CA, USA, May 2013.