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A Differential-Algebraic Model for the Once-Through Steam Generator of MHTGR-Based Multimodular Nuclear Plants

机译：基于MHTGR的多模核电站直流蒸汽发生器的微分代数模型

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摘要

Small modular reactors (SMRs) are those fission reactors whose electrical output power is no more than 300 MWe. SMRs usually have the inherent safety feature that can be applicable to power plants of any desired power rating by applying the multimodular operation scheme. Due to its strong inherent safety feature, the modular high temperature gas-cooled reactor (MHTGR), which uses helium as coolant and graphite as moderator and structural material, is a typical SMR for building the next generation of nuclear plants (NGNPs). The once-through steam generator (OTSG) is the basis of realizing the multimodular scheme, and modeling of the OTSG is meaningful to study the dynamic behavior of the multimodular plants and to design the operation and control strategy. In this paper, based upon the conservation laws of mass, energy, and momentum, a new differential-algebraic model for the OTSGs of the MHTGR-based multimodular nuclear plants is given. This newly-built model can describe the dynamic behavior of the OTSG in both the cases of providing superheated steam and generating saturated steam. Numerical simulation results show the feasibility and satisfactory performance of this model. Moreover, this model has been applied to develop the real-time simulation software for the operation and regulation features of the world first under constructed MHTGR-based commercial nuclear plant-HTR-PM.
机译：小型模块化反应堆（SMR）是那些裂变反应堆，其电输出功率不超过300 MWe。 SMR通常具有固有的安全特性，通过应用多模块运行方案，可将其应用于任何额定功率的发电厂。由于其强大的固有安全特性，模块化的高温气冷堆（MHTGR）使用氦气作为冷却剂，石墨作为缓和剂和结构材料，是用于建造下一代核电站（NGNP）的典型SMR。直流蒸汽发生器（OTSG）是实现多模块方案的基础，而OTSG的建模对于研究多模块设备的动态行为以及设计运行和控制策略具有重要意义。本文基于质量，能量和动量的守恒律，给出了基于MHTGR的多模核电站OTSG的微分-代数模型。这个新模型可以描述在提供过热蒸汽和产生饱和蒸汽的情况下OTSG的动态行为。数值仿真结果表明了该模型的可行性和令人满意的性能。此外，该模型已被用于开发世界上第一个基于MHTGR的商业核电站-HTR-PM的运行和调节功能的实时仿真软件。

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  • 来源
    《Mathematical Problems in Engineering》 |2015年第6期|370101.1-370101.12|共12页
  • 作者

    Dong Zhe;

  • 作者单位

    Minist Educ China, Key Lab Adv Reactor Engn & Safety, Beijing 100084, Peoples R China.;

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