摘要
尾流效应的存在会导致风电场下风向风能减少,流场湍流度增加,进而影响风电场中位于下风向风机的效率和风轮的使用寿命。文章对尾流效应研究现状进行了概述,利用WASP软件以及风资源数据进行风电场模拟计算,将上下游风机之间间距以及上下游风机连线与主导风向的偏向角作为风机定位坐标,建立了分别由2台、3台、4台风机组成的模型并进行计算。比较在不同风机布局的情况下,风电场内每台风机和风电场的年净发电量以及尾流损失值随风机布局的变化趋势。对比计算结果得出风电场机组布局中风机之间的最佳间距和偏向角的定量值,确定风机尾流效应分析在风电场内机组布局中的重要性,为优化风电机组布局以及提高风电场风能利用率提供理论依据。
The existence of wake effect could lead decrease of downwind wind energy and increase of turbulence, affect the efficiency and the service life of downwind turbines in wind farm. In this paper, the research status of wake effect is reviewed, and influence of wake effect on layout of units in wind farm is analyzed by proposed models. A model of two wind turbines, three wind turbines and four wind turbines are established respectively according to the wind turbine location coordinates which consist of space between upstream and downstream wind turbine and deviation angle between the prevailing wind direction and the direction of upstream and downstream wind turbine. Trend of net electric-power out- put of each wind turbine and all wind farms, wake loss is compared under different layout of wind tur- bines. Optimum space between upstream and downstream wind turbine and optimum deviation angle are gotten from comparison results. The analysis results indicate wake effect analysis plays an important role in arrangement of wind turbines in wind farm, and provides a theoretical foundation for optimum layout of wind turbines and increase of wind farm utilization ratio.
出处
《可再生能源》
CAS
北大核心
2014年第4期429-435,共7页
Renewable Energy Resources
基金
内蒙古自治区高等学校科学研究项目(NJZY12066)
内蒙古自治区科技厅自然基金项目(ZD2012MS0703)
呼和浩特市科学技术局项目(计划编号:2012-I-7)
关键词
尾流效应
模拟计算
年净发电量
尾流损失
风机间距
偏向角
wake effect
simulation
annual net generation
wake loss
turbine spacing
deviation angle
