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Accurate interpolation methods for the annual simulation of solar central receiver systems using celestial coordinate system

机译：使用天体坐标系的太阳中央接收机系统年模拟的精确插值方法

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摘要

Heliostat field layout optimization bases on simulations of the annual energy production. To reduce the computation time of the optimization process, one can try to reduce the number of simulation points of the annual domain, while keeping similar accuracy. For the temporal domain, there exist already different approaches as aggregation of days. To further reduce the number of needed simulation points, in this paper we decouple the power computation from the irradiation, such that we just regard the computation of the power plant efficiency. This time-dependent parameter is transformed into a celestial coordinate system where the solar angle-dependent efficiency will be approximated using suitable multi-dimensional interpolation methods.We distinguish between an accurate approximation of the received annual optical energy and the electrical energy of each moment of a year. These methods are demonstrated for the existing heliostat field layouts PS10 and Gemasolar in Seville, while using realistic weather conditions. With this new approach just around 40 simulation points suffice to reach an accuracy of 99.9% for the received power for smaller power plants as PSIO, and for larger plants as Gemasolar. Compared to a state-of-the-art method, this investigation helps to accelerate the simulation by factor three.
机译：Heliostat现场布局优化基础仿真仿效。为了减少优化过程的计算时间，可以尝试减少年度域的模拟点的数量，同时保持类似的准确性。对于时间域，存在已经不同的方法作为天数的聚合。为了进一步减少所需的模拟点的数量，在本文中，我们从辐射中解耦了功率计算，使得我们只是考虑到电厂效率的计算。将该时间依赖性参数变换为天体坐标系，其中使用合适的多维插值方法近似太阳角依赖性效率。我们区分所接收的年度光能的准确近似和每个时刻的电能一年。这些方法是在塞维利亚的现有的Heliostat领域布局PS10和Gemasolar进行了演示，同时使用现实的天气条件。通过这种新方法，只有在40个模拟点就足够了，以达到99.9％的准确性，为较小的电厂作为PSIO的接收功率，以及较大的植物作为Gemasolar。与最先进的方法相比，该调查有助于按因素三的模拟。

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