Zusammenfassung
Klassisch ist die Stromspeicherung für PV-Module als Insellösung ausgeführt. In diesem Beitrag hingegen liegt der Fokus auf Wohneinheiten mit netzgebundener lokaler Erzeugung, bei welchen zusätzlich kleine Speichereinheiten installiert werden. Dabei handelt es sich um eine neuartige Entwicklung, die in Europa derzeit eingeführt wird. Obwohl die Verschiebung des Verbrauchs innerhalb eines Tages oder zum nächsten Tag eine klare Motivation ist, sind auch andere Anwendungen, wie Begrenzung von Überspannung und Überbrückung von Ausfällen, denkbar. Der Artikel gibt Einblick in die Gleichzeitigkeit von Verbraucher- und Erzeugungsprofilen von Photovoltaik. Er gibt eine Übersicht von Erkenntnissen aus Untersuchungen zum Thema netzgekoppelte Speicher. Eine Untersuchung zeigt, dass netzgekoppelte Speicher bereits innerhalb einiger Jahre wirtschaftlich werden. Der Artikel schließt mit der Beschreibung ab, wie diese Systeme in der Realität eingesetzt werden können. Der Beitrag basiert auf Arbeiten von VITO im Rahmen von "Intelligent Storage for PV Energy" und einer Literaturstudie.
Summary
Classically, electricity storage for PV panels is mostly designed for stand-alone applications. In contrast, the focus of this article is on dwellings with local generation connected to the grid that can install a small-scale storage. This is a new development that starts to be promoted in Europe. Although postponed consumption within the day or the next days is a straight forward motivation, also other possibilities are enabled like omitting over-voltage of the line and bridging periods of power-line black-out. The paper gives insight in the simultaneity of generation and demand profiles if PV panels are used. It gives an overview of the lessons from studies on the topic of grid-connected storage. A study shows that grid-connected storage can already be profitable in some years. The article ends about how such systems can be used in reality. The paper is based on work executed at VITO in the framework of Intelligent storage for PV energy and on a literature survey.
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Mulder, G., Claessens, B. Insights in storage as a solution for local renewable electricity generation. Elektrotech. Inftech. 128, 116–121 (2011). https://doi.org/10.1007/s00502-011-0819-5
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DOI: https://doi.org/10.1007/s00502-011-0819-5