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Conference Article: An In-Depth Study on Oscillation Peculiarities by Step-Input of Reactivity and Frequency of Helium Fan’s Transducer of 10 MW High Temperature Gas-Cooled Reactor and its Control Strategy

X. Huang, Institute of Nuclear Energy Technology, Tsinghua University, China

Abstract

In order to know more deeply about dynamic characteristics of 10 MW High Temperature Gas-Cooled Reactor (HTR-10), the dynamic math model of HTR-10 is established. On the basis of this model, the paper simulates and studies on the main dynamic processes of HTR-10, especially the oscillation peculiarities that are very different from PWR. The conclusions are: the main reason of oscillation caused by step reactivity disturbing is that the special structure of HTR-10’s fuel component causes fuel granule’s temperature to change slower than nuclear power; the main reasons of oscillation caused by step-input frequency disturbing of helium fan’s transducer are the structure, flux and pressure peculiarities of HTR-10 primary loop, and synchronous vibration between HTR-10 primary and secondary loop. In order to make reactor running smoother and safety, the multi-layer harmony control strategy is adopted. This paper also discusses the design outlines of the under layer controllers.

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key words: Gas Cooled Reactor, Nuclear Technology
Reference:
Proceedings of the Conference on High Temperature Reactors, Petten, NL, April 22-24, 2002
Organized by HTR-TN in cooperation with the European Nucler Society (ENS) and the IAEA
International Atomic Energy Agency, Vienna (Austria)
HTR-2002, pp:1-5