Peak shaving with photovoltaic-battery systems

With the steady growth of the photovoltaic market over the last decade, the feed-in of photovoltaic-generators may strain the electricity grid, especially in rural areas. Storage devices are expected to smooth over the non-simultaneous production of volatile renewable energies and their consumption....

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Bibliographic Details
Main Authors: Braam, Felix, Hollinger, Raphael, Llerena Engesser, Martin, Muller, Stine, Kohrs, Robert, Wittwer, Christof
Format: Conference Proceeding
Language:English
Subjects:
Batteries
Control system analysis
Energy management
Generators
Inverters
Photovoltaic systems
Power system simulation
Power system stability
Smart Grids
Topology
Online Access:Request full text
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Summary:With the steady growth of the photovoltaic market over the last decade, the feed-in of photovoltaic-generators may strain the electricity grid, especially in rural areas. Storage devices are expected to smooth over the non-simultaneous production of volatile renewable energies and their consumption. In this paper, we investigate to what extent domestic photovoltaic-battery systems can compensate the capping of the feed-in power by buffering the peak energy. The Fraunhofer Institute for Solar Energy Systems (ISE) in Freiburg, Germany, has developed a novel forecast-based control scheme for photovoltaic-battery systems. It estimates the photovoltaic excess energy and derives a charging schedule for the battery to store the energy from the photovoltaic peak-production. The maximal self-consumption of the locally produced renewable energy is thereby not affected. We show that the maximal photovoltaic feed-in power can be reduced from 70 % to 60 % of the nominal photovoltaic power without losses.
ISSN:2165-4816
2165-4824
DOI:10.1109/ISGTEurope.2014.7028748