Wolfgang Gawlik

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With increasing photovoltaic (PV) penetration in low voltage networks (LVNs), voltage regulation is a challenge. Active power curtailment (APC) is one possible solution for mitigating over voltages resulting from active power injection in LVNs. There is an inherent unfairness in the APC scheme. When generation is high and consumption is low, the voltages at(More)
Die Erweiterung der Verteilnetze um Smart-Grid-Technologien bietet die Chance, mithilfe von innovativen Regelstrategien für dezentrale Erzeugungsanlagen die Versorgungssicherheit zu erhalten und zu erhöhen. Im Forschungsprojekt SORGLOS werden daher Methoden und Algorithmen entwickelt, um in einzelnen Netzabschnitten (Microgrids) mittels vorhandener(More)
This paper presents novel separate methods for finding optimal locations, sizes of multiple distributed generators (DGs) simultaneously and operational power factor in order to minimize power loss and improve the voltage profile in the distribution system. A load concentration factor (LCF) is introduced to select the optimal location(s) for DG placement.(More)
  • Ao Univ, Ing Techn Karl Dipl, Ponweiser, Iii Kurzfassung, Wolfgang Kastner, Fabian Dür +56 others
  • 2016
The thesis at hand presents a framework to design complex models and simulations of systems focusing on energy performance. It contributes to the research question, how to design and operate complex on-site energy systems of final energy consumers in the most sustainable way. A state of the art approach to answer this research question is to perform an(More)
—The potential of demand side as a frequency reserve proposes interesting opportunity in handling imbalances due to intermittent renewable energy sources. This paper proposes a novel approach for computing the parameters of a stochastic battery model representing the aggregation of Thermostatically Controlled Loads (TCLs). A hysteresis based non-disruptive(More)