抛物面型聚风聚光发电系统的运行性能分析

Performance analysis of parabolic mask for wind-solar energy compound concentration system

为了使太阳能和风能发电系统能够持续稳定供电,提出一种在抛物面聚光镜中央开口并安装风力叶轮的抛物面型聚风聚光发电系统。该系统的聚风发电部分采用基于Wilson模型、NACA-4412翼型叶轮设计的风力机,聚光光伏发电部分采用砷化镓电池为接收器。该文对此风力机的非均匀流场进行了仿真模拟,分析了不同抛物面焦距和中央开口直径对聚风发电功率的影响。结果表明,当抛物面焦距为700 mm、中央开口直径为1100 mm时系统的日发电总量最大,为该系统抛物面的最佳结构参数。在此最佳结构参数下,当该系统聚光光伏发电部分于每天09:00—17:00运行,聚风发电部分在剩余时间运行时,该系统的日发电总量比同等情况下分开运行的聚光光伏和非聚风风力发电系统的日发总电量提高了36.0%,提高了能源综合利用率。

In order to ensure the stable and continuous operation of solar and wind power generation systems,a parabolic mask for wind-solar energy compound concentration system is proposed which is based on an open parabolic concentrator with a wind power generator installed in the whole.The NACA-4412 impeller is applied to the wind turbine which is based on Wilson model of this system,and the GaAs PV cell is used as the receiver for the concentrated photovoltaic power generation.In this paper,the non-uniform flow field of the wind turbine is simulated,and the influence of different paraboloid focal lengths and central opening diameters on the concentrated wind power generation is analyzed.The results show that the power of concentrated wind generation is the greatest when the paraboloid focal length is seven hundred millimeter and the central opening diameter is one thousand and one hundred millimeter,which are the optimal structure parameters of the paraboloid of the system.Under the condition of optimal structure parameters,the system concentrating photovoltaic power generation part runs from 09:00 to 17:00,while the part of wind gathering power generation works at the other time.The total daily generation of this system is increasing by 36.0%than that of the independent concentrator photovoltaic system and wind power generation system at the same circumstances,and the energy comprehensive utilization is improved.