Dynamic evaluation of a scaled-down heat pipe-cooled system during start-up/shut-down processes using a hardware-in-the-loop test approach  

作　　者：Jiao‑Long Deng Tian‑Shi Wang En‑Ping Zhu Shuo Yuan Xiao‑Jing Liu Xiang Chai 

机构地区：[1]School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《Nuclear Science and Techniques》2023年第11期174-198,共25页核技术（英文）

基　　金：This work was financially supported by the National Key R&D Program of China(No.2020YFB1901900);National Natural Science Foundation of China(No.12275175);Special Fund for Strengthening Industry of Shanghai(No.GYQJ-2018-2-02);Shanghai Rising Star Program(No.21QA1404200);the LingChuang Research Project of the China National Nuclear Corporation.

摘　　要：Micro-mobile heat pipe-cooled nuclear power plants are promising candidates for distributed energy resource power genera-tors and can be flexibly deployed in remote places to meet increasing electric power demands.However,previous steady-state simulations and experiments have deviated significantly from actual micronuclear system operations.Hence,a transient analysis is required for performance optimization and safety assessment.In this study,a hardware-in-the-loop(HIL)approach was used to investigate the dynamic behavior of scaled-down heat pipe-cooled systems.The real-time features of the HIL architecture were interpreted and validated,and an optimal time step of 500 ms was selected for the thermal transient.The power transient was modeled using point kinetic equations,and a scaled-down thermal prototype was set up to avoid mod-eling unpredictable heat transfer behaviors and feeding temperature samples into the main program running on a desktop PC.A series of dynamic test results showed significant power and temperature oscillations during the transient process,owing to the inconsistency of the rapid nuclear reaction rate and large thermal inertia.The proposed HIL approach is stable and effective for further studying of the dynamic characteristics and control optimization of solid-state small nuclear-powered systems at an early prototyping stage.

关 键 词：Micro-heat pipe-cooled nuclear reactor HARDWARE-IN-THE-LOOP Dynamic evaluation Start-up/shut-down processes 

分 类 号：TM623[电气工程—电力系统及自动化]