An experimental investigation on the effect of individual turbine control on wind farm dynamics |
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Authors: | Jennifer Annoni Kevin Howard Peter Seiler Michele Guala |
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Affiliation: | 1. Aerospace Engineering and Mechanics, University of Minnesota, Minneapolis, Minnesota, USA;2. Department of Civil, Environmental and Geo‐Engineering and Saint Anthony Falls Laboratory (SAFL), University of Minnesota, Minneapolis, Minnesota, USA |
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Abstract: | Individual wind turbines in a wind farm typically operate to maximize their performance with no consideration of the impact of wake effects on downstream turbines. There is potential to increase power and reduce structural loads within a wind farm by properly coordinating the turbines. To effectively design and analyze coordinated wind turbine controllers requires control‐oriented turbine wake models of sufficient accuracy. This paper focuses on constructing such a model from experiments. The experiments were conducted to better understand the wake interaction and impact on voltage production in a three‐turbine array. The upstream turbine operating condition was modulated in time, and the dynamic impact on the downstream turbine was recorded through the voltage output time signal. The flow dynamics observed in the experiments were used to improve a static wake model often used in the literature for wind farm control. These experiments were performed in the atmospheric boundary layer wind tunnel at the Saint Anthony Falls Laboratory at the University of Minnesota using particle image velocimetry for flow field analysis and turbine voltage modulation to capture the physical evolution in addition to the dynamics of turbine wake interactions. Copyright © 2015 John Wiley & Sons, Ltd. |
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Keywords: | wind farm control wake interactions system identification wind farm dynamics |
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