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- Conference Object (6) (remove)
Wind energy that can neither be fed into the grid nor be used regionally must be curtailed. This paper proposes different options to deal with such surplus wind energy amounts in a time horizon until 2020. It assesses their ability to handle the surplus energy in a sustainable way using a multi criteria analysis. The paper bases on a study that was prepared for the Ministry for Climate Protection, Environment, Agriculture, Nature Conservation and Consumer Protection of North Rhine-Westphalia between 2010 and 2012.
Die Wahrung der Systemsicherheit muss perspektivisch von konventionellen Kraftwerken auf regenerative Energien und Kraft-Wärme-Kopplungsanlagen (KWK) verlagert werden. Diese sollen zukünftig Systemdienstleistungen übernehmen, um in zunehmendem Maße fluktuierende erneuerbare Energien (FEE) zu integrieren. Deutschland strebt an, im Jahr 2020 ein Viertel der elektrischen Energie aus KWK-Anlagen zu erzeugen. Damit werden diese Anlagen einen wesentlichen Teil der regelbaren Stromerzeugung ausmachen. Insbesondere die Erzeugung in dezentralen Blockheizkraftwerken (BHKW) wird zunehmen. Vor diesem Hintergrund stellt sich die Frage, ob dezentrale Anlagen überhaupt nennenswert zur Systemstabilität beitragen können.
Energy systems with high shares of renewable electricity are feasible, but require balancing measures such as storage, grid exchange or demand-side management to maintain system stability. The demand for these balancing options cannot be assessed separately since they influence each other. Therefore, a model was developed to analyze these mutual dependencies by optimizing a concerted use of balancing technologies. This model is presented here. It covers the European electricity system in hourly resolution. Since this leads to a large optimization problem, several options for reducing system complexity are presented. The application of the model is illustrated with a case study outlining the effects of pumped hydro storage and controlled charging of electric vehicles in central Europe.
