太阳能热发电定日追踪算法建模仿真与实现

MODELING,SIMULATION AND REALIZATION OF CSP HELIOSTAT SUN-TRACKING ALOGRITHM

针对塔式太阳能热发电定日镜追日过程进行运动过程分析,建立相应的追日聚光反射模型,推导定日镜方位角高度角计算方法,并模拟镜场中不同位置的定日镜镜面法线姿态。在位于东经121˚23′47″/北纬31˚00′20″处搭建的面积66 m^2定日镜追日实验装置验证算法,结合定日镜和投影处位置信息,利用安装在镜面的三维磁方向传感器确定定日镜绝对姿态,实验证明该算法的数据准确率可达到99%以上,能推广应用于太阳能热发电定日追踪系统。

The kinematic process analysis is carried out for tower CSP(concentrating solar power)heliostat sun-tracking,The sunlight concentration reflection model is constructed,in wich the azimuth and altitude angle algorithm is deduced to simulate the heliostat normal attitude at the different sites in the mirror field.A 66 square meter heliostat experiment device is set up at the site of east longitude 121°23′47″″/northern latitude 31°00′20″to verify the fore mentioned algorithm with the position information of heliostat and projection target.A 3D magnetic direction sensor mounted on mirror suffce is used to measure the heliostat absolute attitude.The experiments testify that the algorithm accuracy can achieve above 99%and can be applied in CSP heliostat sun-tracking system.