Dynamic Characteristics Analysis on MHTGR Plant’s Secondary Side Fluid Flow Network

作     者：Maoxuan Song Zhe Dong Maoxuan Song;Zhe Dong

作者机构：Institute of Nuclear and New Energy Technology Collaborative Innovation Center of Advanced Nuclear Energy Technology of China Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education Tsinghua University Beijing China 

出 版 物：《Journal of Power and Energy Engineering》 (电力能源（英文）)

年 卷 期：2016年第4卷第7期

页      面：15-22页

学科分类：082703[工学-核技术及应用] 08[工学] 0827[工学-核科学与技术] 

主　　题：MHTGR Plant Secondary Side Fluid Flow Network a Differential-Algebraic Model PI Controllers 

摘      要：Multipe NSSS (Nuclear Steam Supply System) modules use the common feeding-water system to drive the common turbine power generation set. The SSFFN (secondary side fluid flow network) of MHTGR plant has features i.e. strong-coupling and nonlinearity. A wide range of power switching operation will cause unsteady flow, which may destroy the working elements and will be a threat for normal operation. To overcome those problems, a differential-algebraic model and PI controllers are designed for the SSFFN. In MATLAB\SIMULINK environment, a simulation platform is established and used to make a simulation of SSFFN of a MHTGR plant with two NSSS modules, which uses feedwater valves to control the mass flow rate in each module instead of feedwater pump. Results reflect good robustness of controllers.