基于风电场动态时空关系的风速分布模型的研究.pdfVIP

38 卷 6 期 电 网 技 术 Vol. 38 No. 6 20 14 年6 月 Power System Technology Jun. 2014 文章编号：1000-3673 （20 14）06-1432-07 中图分类号：TM 614 文献标志码：A 学科代码：470 4051 基于风电场动态时空关系的风速分布模型研究 佘慎思，李征，蔡旭 （上海交通大学 风力发电研究中心，上海市 闵行区 200240 ） Research on Wind Speed Distribution Model of Wind Farm Based on Its Dynamic Space-Time Relation SHE Shensi, LI Zheng, CAI Xu (Wind Power Research Center, Shanghai Jiaotong University, Minhang District, Shanghai 200240, China) ABSTRACT: Dynamic spatial positions of power generating 0 引言 units in a wind farm are calculated by the speed and direction 风力发电是新能源领域中技术最成熟、应用规 measured by anemometer tower, and based on the 模最大、最具发展前景的发电方式之一，近年来在 mathematical model synthesizing wake effect with time-lag effect of wind power generating unit that is constructed on 世界范围内得到了快速发展。但风资源的不确定性 Matlab platform, a model describing the distribution of wind 使风电机组的输出功 呈波动性，会影响电网的电 speed on each wind power unit is built. Taking an actual wind [1] [2] 能质量 ，甚至带来电压闪变问题 。对于大规模 farm as research obj ect and inputting the measured data by 风电场，由于尾流效应造成的功 损失大约为整个 anemometer tower into the built model, the wind speed at each 风场出力的 5%-15%[3] ，因此风机位置规划时应尽 wind power generating unit can be calculated. The impacts of 量在主风向上使机组间的位置间隔较远，减少尾流 wake effect and time-lag effect on wind speed model and 效应带来的风能衰减，也应考虑电缆铺设的花销和 power output of wind farm are analyzed, and analysis results show that the wake eff