Carretero E, Preciado J, Salinas I, Ayora I, Heras C
Opt Express. 2019 Apr 15;27(8):A257-A268. doi: 10.1364/OE.27.00A257.
Heliostat alignment evaluation is among the main issues in solar tower concentration plant operation and maintenance. This paper describes a novel method used to evaluate heliostat misalignment and its experimental verification. This method provides a different way of visualizing beam centroid pointing errors by generating the complete deviation curve for each axis. This, for example, would be useful for verifying a heliostat's correct alignment by using a measurement performed out of the receiver target, using these traces to calculate its reflection's expected location, given a known misalignment. This measurement could be performed during operation simply by including a reflective element in the heliostat and two detector arrays on the tower's surface. This model has been tested for various types of misalignments of a heliostat at different hours, dates, and heliostat locations. The simulation results have been validated by using an experimental setup at a scale of 1:100.
定日镜对准评估是太阳能塔式聚光电站运行和维护中的主要问题之一。本文描述了一种用于评估定日镜未对准情况的新方法及其实验验证。该方法通过生成每个轴的完整偏差曲线，提供了一种可视化光束质心指向误差的不同方式。例如，这对于通过在接收器目标之外进行测量来验证定日镜的正确对准很有用，利用这些轨迹来计算其反射的预期位置，前提是已知未对准情况。该测量在运行期间可以简单地通过在定日镜中包含一个反射元件和在塔表面设置两个探测器阵列来进行。该模型已针对定日镜在不同时间、日期和定日镜位置的各种未对准类型进行了测试。模拟结果已通过使用1:100比例的实验装置进行了验证。
