基于改进Lissaman模型风电场内增设小风机的可行性分析

摘要

The overall benefit of power generation for wind farm can be maximum by scientifically and rationally incorporating small wind turbines in the wind farm already built.The technical feasibility analysis of adding small wind turbines is made according to the existing practice of wind turbines in parallel operation.This paper studies the effect of wake effect between wind turbines in complicated terrain on output power of wind farm.The improved Lissaman model is developed considering the occlusion wake effect.The relationship between wind speed and wind turbine output with different tower heights is established.The model is universal and can give any optimization scheme of increasing wind turbines in the wind farm.Example simulation results show that the overall benefit of power generation for wind farm is expected to increase.%提出在已建成的风电场中,通过科学合理地优化布置增设小风机,使风电场的整体发电效益最大.在风电场现有风机已并网运行的基础上,分析在场内间隔中增设小风机的技术可行性.研究复杂地形下风电机组尾流效应对风电场输出功率的影响,建立计及遮挡尾流效应的改进Lissaman模型,构建风速与不同塔筒高度的风机出力之间的关系.该模型具有通用性,可给出任意风电场内增设小风机的优化方案.算例仿真分析结果表明,通过合理规划布置场内小风机,能够有效增加风电场的整体发电效益.