Effects of Complex Wind Direction on Offshore Wind Farm Layout Optimization in Guangdong
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Abstract
Reanalysis dataset MERRA is used to analysis the characteristics of wind direction in Guangdong offshore from 1991 to 2010. A theoretical model of offshore wind farm with 20 wind turbine generators of 4MW and regular layout is employed to finish numerical experiments for the effects of wind direction on layout optimization, including seasonal variation, sector division and fluctuation in frequency distribution. Four different types of layouts are then compared and results show that parallelogram layout is more flexible than rectangular layout. Besides, layout orientating optimization needs more than 16 sectors in wind direction division. Different orientation and type of layouts are sensitive to fluctuation and distortion of wind direction frequency distribution. Therefore, the sensitivity tests with dynamic distribution model are crucial to determine the robustness of recommended layout.
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