摘要
为提升低风速地区风能开发利用效率,研究一种基于塔筒高度梯度优化的风电场布局创新方法。低风速地区风能密度普遍偏低,且风机间尾流效应导致发电量损失,是制约其风电发展的关键问题。通过分析风切变指数与风机输出功率的关系,论证提升塔筒高度对增加单机出力的有效性;进而,为降低尾流影响,提出在主风向上使风机轮毂高度呈梯度递增的新型布局策略。案例仿真结果表明,与传统均匀布局相比,该优化方法能有效提升风电场年发电量,最大增幅超过10%,同时尾流损失显著降低。
To improve the efficiency of wind energy development and utilization in low-wind-speed regions,an innovative method for wind farm layout optimization based on tower height gradient was investigated.Low-wind-speed areas generally exhibit low wind energy density,and power loss caused by wake effects between turbines poses a key constraint on the development of wind power generation.By analyzing the relationship between the wind shear exponent and turbine power output,the effectiveness of increasing tower height in enhancing single-unit power generation was demonstrated;furthermore,to mitigate wake effects,a novel layout strategy was proposed in which hub heights increase progressively along the prevailing wind direction.Case simulation results show that,compared with conventional uniform layouts,this optimization method effectively increases the annual energy production of the wind farm,achieving a maximum improvement of over 10%,while significantly reducing wake losses.
作者
郭文涛
GUO Wentao(Dongfang Electric Wind Power Co.,Ltd.,Deyang 618000,Sichuan,China)
出处
《能源与节能》
2026年第4期17-19,79,共4页
Energy and Energy Conservation
关键词
低风速
风电场
布局优化
塔筒高度梯度
尾流效应
low-wind-speed
wind farm
layout optimization
tower height gradient
wake effect
