CFETR聚变发电厂概念设计技术研究

Conceptual Design Technology Research of CFETR Fusion Power Plant

[目的]基于中国聚变工程实验堆(CFETR)功率输出特性,在聚变堆最大热功率1.25 GW条件下,提出一种CFETR聚变发电厂概念设计方案。[方法]针对CFETR聚变堆周期性长脉冲输出特性与常规岛设备连续稳定输入需求之间的矛盾,采用储能技术方案以“削峰填谷”的方式实现CFETR聚变发电安全稳定运行。讨论了CFETR聚变水冷与氦冷两种不同包层方案下的储能以及一回路与二回路之间耦合与解耦运行模式的组合方案,并通过方案比较,给出CFETR聚变堆不同包层对应的最佳储能运行组合建议。[结果]结果表明:水冷包层、氦冷包层聚变堆分别对应的最佳组合方案是导热油+解耦储热方案与熔盐+耦合储热方案。[结论]从常规岛侧而言,相对于水冷包层方案,采用氦冷包层方案的CFETR聚变发电厂技术经济性更好。研究提出的CFETR聚变发电厂概念设计方案对后续聚变发电技术研究以及工程设计,具有较高的参考价值。

[Introduction]Based on the power output characteristics of China Fusion Engineering Experimental Reactor(CFETR)and under the condition of the maximum thermal power 1.25 GW,this paper aims to provide a conceptual design scheme of CFETR fusion power plant.[Method]To resolve the confliction between the periodic long pulse output characteristics of CFETR fusion reactor and the continuous stable input requirements of conventional island equipment,the energy storage technology scheme was adopted to realize the safe and stable operation of CFETR fusion power generation in the way of"peak cutting and valley filling".We discussed energy storage under two different cladding schemes of CFETR fusion water cooling and helium cooling,as well as the combination scheme of coupling and decoupling operation modes between primary and secondary circuits.Through scheme comparison,the optimal energy storage operation combination corresponding to different cladding of CFETR fusion reactor was given.[Result]The results show that the best combination scheme of water-cooled cladding and helium cooled cladding fusion reactor is heat transfer oil+decoupled heat storage scheme and molten salt+coupled heat storage scheme.[Conclusion]From the conventional island side,compared with the water-cooled cladding scheme,the technical economy of CFETR fusion power plant with the helium cooled cladding scheme is better.The conceptual design scheme of CFETR fusion power plant has high reference value for the subsequent fusion power generation technology research and engineering design.