Solar multiple （SM） and thermal storage capacity are two key design parameters for revealing the performance of direct steam generation （DSG） solar power tower plant. In the case of settled land area, SM and therm...Solar multiple （SM） and thermal storage capacity are two key design parameters for revealing the performance of direct steam generation （DSG） solar power tower plant. In the case of settled land area, SM and thermal storage capacity can be optimized to obtain the minimum levelized cost of electricity （LCOE） by adjusting the power generation output. Taking the dual-receiver DSG solar power tower plant with a given size of solar field equivalent electricity of 100 MWe in Sevilla as a reference case, the minimum LCOE is 21.77 /kWhe with an SM of 1.7 and a thermal storage capacity of 3 h. Besides Sevilla, two other sites are also introduced to discuss the influence of annual DNI. When compared with the case of Sevilla, the minimum LCOE and optimal SM of the San Jose site change just slightly, while the minimum LCOE of the Bishop site decreases by 32.8% and the optimal SM is reduced to 1.3. The influence of the size of solar field equivalent electricity is studied as well. The minimum LCOE decreases with the size of solar field, while the optimal SM and thermal storage capacity still remain unchanged. In addition, the sensitivity of different investment in sub-system is investigated. In terms ofoptimal SM and thermal storage capacity, they can decrease with the cost of thermal storage system but increase with the cost of power generation unit.展开更多
概述塔式太阳能发电系统中定日镜硬件设计及控制方式研究现状。通过对镜场控制系统分析,论述定日镜场控制方案优缺点,指出现有定日镜控制中,最大难点在于通过何种方式使定日镜实现对太阳实时、有效跟踪,诸如镜场中定日镜以何种方式排列...概述塔式太阳能发电系统中定日镜硬件设计及控制方式研究现状。通过对镜场控制系统分析,论述定日镜场控制方案优缺点,指出现有定日镜控制中,最大难点在于通过何种方式使定日镜实现对太阳实时、有效跟踪,诸如镜场中定日镜以何种方式排列、不同天气情况下如何控制定日镜等;提出以可编程控制器(Programm able Logic Controller,PLC)为主体的定日镜控制整体思路,并对未来塔式太阳能定日镜控制系统研究发展做出展望。展开更多
基金This research was supported by the National Natural Science Foundation of China （Grant No. 51676069）, the 111 Project （1312034）, and the Fundamental Research Funds for the Central Universities （Grant No. 2016XS30）.
文摘Solar multiple （SM） and thermal storage capacity are two key design parameters for revealing the performance of direct steam generation （DSG） solar power tower plant. In the case of settled land area, SM and thermal storage capacity can be optimized to obtain the minimum levelized cost of electricity （LCOE） by adjusting the power generation output. Taking the dual-receiver DSG solar power tower plant with a given size of solar field equivalent electricity of 100 MWe in Sevilla as a reference case, the minimum LCOE is 21.77 /kWhe with an SM of 1.7 and a thermal storage capacity of 3 h. Besides Sevilla, two other sites are also introduced to discuss the influence of annual DNI. When compared with the case of Sevilla, the minimum LCOE and optimal SM of the San Jose site change just slightly, while the minimum LCOE of the Bishop site decreases by 32.8% and the optimal SM is reduced to 1.3. The influence of the size of solar field equivalent electricity is studied as well. The minimum LCOE decreases with the size of solar field, while the optimal SM and thermal storage capacity still remain unchanged. In addition, the sensitivity of different investment in sub-system is investigated. In terms ofoptimal SM and thermal storage capacity, they can decrease with the cost of thermal storage system but increase with the cost of power generation unit.
文摘概述塔式太阳能发电系统中定日镜硬件设计及控制方式研究现状。通过对镜场控制系统分析,论述定日镜场控制方案优缺点,指出现有定日镜控制中,最大难点在于通过何种方式使定日镜实现对太阳实时、有效跟踪,诸如镜场中定日镜以何种方式排列、不同天气情况下如何控制定日镜等;提出以可编程控制器(Programm able Logic Controller,PLC)为主体的定日镜控制整体思路,并对未来塔式太阳能定日镜控制系统研究发展做出展望。
