This work focuses on the receding horizon optimal control for a solar-thermal district heating (STDH) system containing lumped parameter and distributed parameter subsystems. A common STDH system includes solar collector system, a short-term energy storage tank and a district heating loop system with a secondary gas boiler system. The inclusion or exclusion of these components leads to different operational and working modes. Detailed system description and mathematical models are provided, and three working modes are introduced and in each mode several operations are demonstrated and addressed. Single-objective and multiobjective problems are formulated. Moreover, in the mode where gas boiler system is included to help addressing the district heating demand, the internal model based boundary servo-control approach is proposed and applied to obtain desired boiler water temperatures such that the expected district heating demand can be satisfied. Moreover, a boundary state observer is designed for the considered solar collector system. © 2017 American Institute of Chemical Engineers AIChE J, 2017

中文翻译：

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太阳能集中供热系统的后退最佳运行和控制

这项工作的重点是对包含集总参数子系统和分布式参数子系统的太阳热区域供热（STDH）系统的后退最优控制。常见的STDH系统包括太阳能收集器系统，短期储能罐和带有辅助燃气锅炉系统的区域供热回路系统。包含或排除这些组件会导致不同的操作和工作模式。提供了详细的系统描述和数学模型，并介绍了三种工作模式，并在每种模式下演示并介绍了几种操作。提出了单目标和多目标问题。此外，在包括燃气锅炉系统以帮助解决区域供热需求的模式中，提出了基于内部模型的边界伺服控制方法，并将其应用于获得期望的锅炉水温，从而可以满足预期的区域供热需求。此外，针对所考虑的太阳能收集器系统设计了边界状态观测器。©2017美国化学工程师学会AIChE的Ĵ，2017年