Optimal Ratio of PV and Wind Power at a Single Grid Connection Point

Conference: NEIS 2019 - Conference on Sustainable Energy Supply and Energy Storage Systems
09/19/2019 - 09/20/2019 at Hamburg, Deutschland

Proceedings: NEIS 2019

Pages: 5Language: englishTyp: PDF

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Grab, Robin; Rogalla, Soenke (Fraunhofer Institute for Solar Energy Systems ISE, Heidenhofstr. 2, 79110 Freiburg, Germany)
Wigger, Soenke (RegEnPro - Regenerative Energieprojekte, Sasstr. 44, 04157 Leipzig, Germany)

In order to economically optimize the grid connection of a combined photovoltaic (PV) and wind power plant, the simultaneity of production from both renewable energy sources should be taken into account. In this work, high-resolution feed-in data from such a combined power plant was recorded and evaluated. The results allow for an estimation of maximum energy curtailment in case of an undersized point of common coupling (PCC). Additionally, it is evaluated how the ratio between the PV and the wind part of a combined power plant influences the expected curtailment losses for different PCC sizes. With this knowledge, it is possible to find a cost-optimal solution for the layout and the grid connection of a combined PV / wind power plant.