TITLE:
Dynamic Characteristics Analysis on MHTGR Plant’s Secondary Side Fluid Flow Network
AUTHORS:
Maoxuan Song, Zhe Dong
KEYWORDS:
MHTGR Plant, Secondary Side Fluid Flow Network, a Differential-Algebraic Model, PI Controllers
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.4 No.7,
July
25,
2016
ABSTRACT: 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.