Solar field heliostat selection based on polygon optimization and boundaries

SOLARPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems Pub Date : 2019-07-26 DOI:10.1063/1.5117565

P. Schöttl, S. Rohani, E. Leonardi, L. Pisani, Íñigo Les, Amaia Mutuberria, P. Nitz

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引用次数: 5

Abstract

A novel methodology for the design of heliostat fields is presented, based on the selection of heliostats from an oversized field by means of a polygon. To obtain the ideal field shape, the polygon vertices are optimized with an evolutionary algorithm. The objective function calculates a weighted tradeoff between annual optical efficiency and ground usage and is applied to the entire field instead of individual heliostats. Various other figures of merit could be readily integrated. To be able to deal with complex shaped land available for the Solar Tower plant, area boundaries are taken into account during the optimization phase. The application of the methodology is demonstrated by means of a reference scenario and multiple variations of parameters and area boundaries. The polygon selection creates smooth, coherent heliostat fields with high performance regarding the objectives, while solving several practical issues in the heliostat field design phase at the same time.A novel methodology for the design of heliostat fields is presented, based on the selection of heliostats from an oversized field by means of a polygon. To obtain the ideal field shape, the polygon vertices are optimized with an evolutionary algorithm. The objective function calculates a weighted tradeoff between annual optical efficiency and ground usage and is applied to the entire field instead of individual heliostats. Various other figures of merit could be readily integrated. To be able to deal with complex shaped land available for the Solar Tower plant, area boundaries are taken into account during the optimization phase. The application of the methodology is demonstrated by means of a reference scenario and multiple variations of parameters and area boundaries. The polygon selection creates smooth, coherent heliostat fields with high performance regarding the objectives, while solving several practical issues in the heliostat field design phase at the same time.

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基于多边形优化和边界的太阳场定日镜选择

提出了一种新的定日镜视场设计方法，该方法基于多边形法从超大视场中选取定日镜。为了获得理想的场形状，采用进化算法对多边形顶点进行优化。目标函数计算年度光学效率和地面使用之间的加权权衡，并应用于整个领域，而不是单个定日镜。其他各种各样的优点可以很容易地综合起来。为了能够处理可用于太阳能塔电厂的复杂形状的土地，在优化阶段考虑了区域边界。通过参考场景和参数和区域边界的多种变化来演示该方法的应用。多边形的选择创造了平滑的，连贯的定日镜场与高性能的物镜，同时解决了定日镜场设计阶段的几个实际问题。提出了一种新的定日镜视场设计方法，该方法基于多边形法从超大视场中选取定日镜。为了获得理想的场形状，采用进化算法对多边形顶点进行优化。目标函数计算年度光学效率和地面使用之间的加权权衡，并应用于整个领域，而不是单个定日镜。其他各种各样的优点可以很容易地综合起来。为了能够处理可用于太阳能塔电厂的复杂形状的土地，在优化阶段考虑了区域边界。通过参考场景和参数和区域边界的多种变化来演示该方法的应用。多边形的选择创造了平滑的，连贯的定日镜场与高性能的物镜，同时解决了定日镜场设计阶段的几个实际问题。

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SOLARPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems

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