热核聚变发电岛三回路参数优化研究  

Research on Optimization of Three-Circuit Parameters for Thermonuclear Fusion Power Generation Island

作　　者：罗贤勇 李斌 林燕 向魁 朱光涛 LUO Xianyong;LI Bin;LIN Yan;XIANG Kui;ZHU Guangtao(China Energy Engineering Group Guangdong Electric Power Design Institute Co.,Ltd.,Guangzhou 510663,Guangdong,China)

机构地区：[1]中国能源建设集团广东省电力设计研究院有限公司,广东广州510663

出　　处：《南方能源建设》2024年第3期126-136,共11页Southern Energy Construction

基　　金：中国能源建设股份有限公司重大科技项目“热核聚变发电岛概念设计研究”(CEEC2021-ZDYF-08)。

摘　　要：[目的]为了适应CFETR聚变反应堆周期性的输出特性,聚变发电厂采用氦气-熔盐储能-水(汽)动力循环三回路系统。其中三回路蒸汽循环的参数及热力方案对发电岛投资和发电收益有重大影响。高参数和复杂的热力方案可提高循环效率,但增加了初投资;低参数和简单的热力方案循环效率不高,但初投资显著降低。三回路蒸汽参数及热力方案的选择应综合考虑发电效率和初投资,按综合经济性较优的原则选取。[方法]文章基于仿真软件Ebsilon进行建模仿真,考察不同回热方案、不同主汽和再热参数下的热力循环的性能。通过对不同的热力方案和参数组合进行计算,获得了各工况下的总效率和输出功率,并分析了三回路主要设备投资及其随参数的变化。[结果]综合考虑储能岛和常规岛的总投资与收益,推荐采用9级回热,主蒸汽参数12.4 MPa、540℃的热力方案。[结论]文章提出的三回路蒸汽参数和热力方案对后续聚变发电技术研究以及工程设计具有参考价值。[Introduction]In order to adapt to the periodic output characteristics of CFETR fusion reactors,the fusion power plant adopts a helium-molten salt energy storage-water(steam)power cycle three-circuit system.The parameters and thermal scheme of the three-circuit steam cycle have a significant impact on the investment and power generation benefit of the power generation island.High parameters and complex thermal schemes can improve cycle efficiency but increase initial investment;low parameters and simple thermal schemes have lower cycle efficiency but significantly reduce initial investment.Therefore,the selection of steam parameters and thermal schemes for the three-circuit system should comprehensively consider power generation efficiency and initial investment and should be selected based on the principle of optimal comprehensive economy.[Method]Based on the simulation software Ebsilon,modeling and simulation were carried out in this study to examine the performance of the thermal cycle under different regeneration schemes and different main steam and reheat parameters.By calculating different thermal schemes and parameter combinations,the total efficiency and output power under each operating condition were obtained,and the investment in the main equipment of the three-circuit system and its variation with parameters were analyzed.[Result]Taking into account the total investment and returns of the energy storage island and the conventional island,it is recommended to adopt a thermal scheme with 9-stage regeneration,and main steam parameters of 12.4 MPa,and 540℃.[Conclusion]The three-circuit steam parameters and thermal scheme proposed in the study have reference value for subsequent research on fusion power generation technology and engineering design.

关 键 词：聚变发电厂 三回路系统 熔盐储能 参数选择 热力方案 热经济性 等效焓降 

分 类 号：TL4[核科学技术—核技术及应用] TK08[动力工程及工程热物理]