A simplified mathematical dynamic model of the HTR-10 high temperature gas-cooled reactor with control system design purposes

Li, Haipeng; Huang, Xiaojin; Liangju, Zhang

doi:10.1016/j.anucene.2008.02.012

Cited by 31 publications

(17 citation statements)

References 9 publications

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“…In the channels of the riser, the cold helium flows upward to cool the reflector, and the heat transfer process can be described by [23,24] …”

Section: Thermal Hydraulicsmentioning

confidence: 99%

“…To guarantee the inherent safety feature, the MHTGR of the HTR-PM plant has a slim core shape. Relative to using a single node [23], it is more proper to divide the reactor core into N nodes along the axial direction [24]. The nodalization is shown in Figure 3, where the riser is some tubes in the side reflector through which helium can flow upward to the upper entry of the pebble-bed, and the downcomer is the volume gap among the fuel elements inside the pebble-bed through which helium can flow down.…”

Section: Dynamical Modelingmentioning

confidence: 99%

“…In this section, the main parts of dynamic model of the HTR-PM plant, that is, the pebble-bed one-zone MHTGR, OTSG, fluid flow network (FFN) of the common secondary-loop system, and turbine/generator unit, are summarized from [23][24][25][26]. This model is proposed for control system design and verification, whose parameters are determined by the data collected from physical and thermal-hydraulic design.…”

Section: Dynamical Modelingmentioning

confidence: 99%

See 2 more Smart Citations

Dynamic Modeling and Control Characteristics of the Two-Modular HTR-PM Nuclear Plant

Dong

Pan

Song

et al. 2017

Science and Technology of Nuclear Installations

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The modular high temperature gas-cooled reactor (MHTGR) is a typical small modular reactor (SMR) with inherent safety feature. Due to its high reactor outlet coolant temperature, the MHTGR can be applied not only for electricity production but also as a heat source for industrial complexes. Through multimodular scheme, that is, the superheated steam flows produced by multiple MHTGR-based nuclear supplying system (NSSS) modules combined together to drive a common thermal load, the inherent safety feature of MHTGR is applicable to large-scale nuclear plants at any desired power ratings. Since the plant power control technique of traditional single-modular nuclear plants cannot be directly applied to the multimodular plants, it is necessary to develop the power control method of multimodular plants, where dynamical modeling, control design, and performance verification are three main aspects of developing plant control method. In this paper, the study in the power control for two-modular HTR-PM plant is summarized, and the verification results based on numerical simulation are given. The simulation results in the cases of plant power step and ramp show that the plant control characteristics are satisfactory.

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“…In the channels of the riser, the cold helium flows upward to cool the reflector, and the heat transfer process can be described by [23,24] …”

Section: Thermal Hydraulicsmentioning

confidence: 99%

Section: Dynamical Modelingmentioning

confidence: 99%

Section: Dynamical Modelingmentioning

confidence: 99%

See 1 more Smart Citation

Dynamic Modeling and Control Characteristics of the Two-Modular HTR-PM Nuclear Plant

Dong

Pan

Song

et al. 2017

Science and Technology of Nuclear Installations

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“…In case of y ≠ 0, from the discussion in the first step and Equation (24) (27) If e ξ = 0, then we have:…”

Section: Design Approach Of Feedback Dissipation Controlmentioning

confidence: 99%

“…For designing the power-level control of the MHTGR, the dynamic model of the reactor core is adopted from the point kinetics with one equivalent delayed neutron group with reactivity induced by the variation of the average fuel and reflector temperatures, which can be written as [26,27]: …”

Section: Nonlinear State-space Modelmentioning

confidence: 99%

Output Feedback Dissipation Control for the Power-Level of Modular High-Temperature Gas-Cooled Reactors

Dong

2011

Energies

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Because of its strong inherent safety features and the high outlet temperature, the modular high temperature gas-cooled nuclear reactor (MHTGR) is the chosen technology for a new generation of nuclear power plants. Such power plants are being considered for industrial applications with a wide range of power levels, thus power-level regulation is very important for their efficient and stable operation. Exploiting the large scale asymptotic closed-loop stability provided by nonlinear controllers, a nonlinear power-level regulator is presented in this paper that is based upon both the techniques of feedback dissipation and well-established backstepping. The virtue of this control strategy, i.e., the ability of globally asymptotic stabilization, is that it takes advantage of the inherent zero-state detectability property of the MHTGR dynamics. Moreover, this newly built power-level regulator is also robust towards modeling uncertainty in the control rod dynamics. If modeling uncertainty of the control rod dynamics is small enough to be omitted, then this control law can be simplified to a classical proportional feedback controller. The comparison of the control performance between the newly-built power controller and the simplified controller is also given through numerical study and theoretical analysis.

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Nodal dynamics modeling of AP1000 reactor for control system design and simulation

Wang

Liu

Jiang

et al. 2013

Annals of Nuclear Energy

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A simplified mathematical dynamic model of the HTR-10 high temperature gas-cooled reactor with control system design purposes

Cited by 31 publications

References 9 publications

Dynamic Modeling and Control Characteristics of the Two-Modular HTR-PM Nuclear Plant

Dynamic Modeling and Control Characteristics of the Two-Modular HTR-PM Nuclear Plant

Output Feedback Dissipation Control for the Power-Level of Modular High-Temperature Gas-Cooled Reactors

Nodal dynamics modeling of AP1000 reactor for control system design and simulation

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