热离子空间堆电源负荷跟踪特性研究  

Study on Load-Following Characteristics of a Thermionic Space Reactor Power System

作　　者：韩旭帆 欧阳泽宇 王钊 单建强[1] Han Xufan;Ouyang Zeyu;Wang Zhao;Shan Jianqiang(School of Nuclear Science and Technology,Xi’an Jiaotong University,Xi’an,710049,China;Shanghai Aerospace System Engineering Research Institute,Shanghai,201100,China)

机构地区：[1]西安交通大学核科学与技术学院,西安710049 [2]上海宇航系统工程研究所,上海201100

出　　处：《核动力工程》2024年第2期63-71,共9页Nuclear Power Engineering

基　　金：上海航天科技创新基金(SAST2021-022)。

摘　　要：为分析热离子空间堆电源负荷跟踪运行特性,本研究采用可复用的层次化组件模型的Fortran语言建立热离子空间堆TOPAZ-II系统程序。分析了铯蒸汽压力和电极间隙对输出电功率的影响,利用堆芯反应性反馈和外部负载电阻协同控制的方法,分析不同载荷变化下热离子空间堆电源在轨运行的负荷跟踪运行特性。结果表明对于稳态电功率为5.5 kW的工况,电功率在0.95~7.25 kW之间变化时,慢化剂温度不会发生明显变化,此时堆芯具有自稳特性;超过这个范围,堆芯则失去自稳特性,这与慢化剂的正温度反应性反馈密切相关。In order to analyze the power load-following characteristics of thermionic space reactor power system,TOPAZ-II thermionic space reactor system code is established by using the simulation language of reusable hierarchical component model.The influence of Cs steam pressure and electrode gap on the output power is analyzed.The load tracking operation characteristics of thermionic space reactor power supply in orbit under different load changes are analyzed by using the method of core reactivity feedback and external load resistance collaborative control.The results show that the moderator temperature does not change significantly when the steady-state electric power is 5.5 kW and the electric power varies between 0.95 kW and 7.25 kW,and the reactor has self-stability.Beyond this range,the reactor loses self-stability,which is closely related to the positive temperature reactivity feedback of the moderator.

关 键 词：热离子空间堆电源 程序开发 负荷跟踪 

分 类 号：TL331[核科学技术—核技术及应用]