【摘要】 分析了拟建于北京市延庆县的1 MW太阳能塔式电站定日镜场对地面的遮阳情况.采用光线追迹计算了定日镜对地面的阴影.为了精确计算镜场对地面的阴影面积,提出了相邻镜面间阴影率的计算方法,并推导了计算公式.提出了在一段时期内地面日照时间分布的统计方法.使用MATLAB编程模拟了镜场对地面的阴影以及地面日照时间分布情况,并能够绘制任意时刻地面阴影图和任意时期内地面日照时间分布图.更多还原

【Abstract】 The shadow of the heliostat field on the ground in the 1 MW solar tower power plant,which will be built in the Yanqing town of the Beijing city,is analyzed.The shadow of the heliostat on the ground is calculated with ray trace method.For calculating the shadow area of the heliostat field on the ground accurately,the calculation method of the shading ratio among the adjacent heliostats is proposed and the theoretic formulas are derived.The statistical method of the sunlit time distribution on the ground in a period is proposed.The program based on the MATLAB is developed for modeling the shadow of the heliostat field and the sunlit time distribution on the ground.The shadow pattern of the field at any time and the sunlit time distribution on the ground in any period can be made with the program.更多还原