风向对广东海上风电场风机布置的影响

引入一个包含20台4 MW风力发电机组，风机布置采用规则几何构型的海上风电场理论模型，设计了两大类共4个不同的风机阵列，根据1991-2010年广东近海区域MERRA再分析资料，从海面风向的季节变化、扇区划分方式变化以及风向频率分布变化等三个方面开展数值试验研究。结果表明:平行四边形阵列比矩形阵列更具灵活性，能够适应更复杂的风向季节性偏转；风机布置需要更加细致的风向扇区划分方式，传统的16个风向扇区划分方式难以适应风机阵列最佳朝向的选择与调整；风机布置方案比选需要考虑风向频率分布的年际变动，通过敏感性试验识别更具稳定性的风机阵列。

Effects of Complex Wind Direction on Offshore Wind Farm Layout Optimization in Guangdong

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.