HTGR Knowledge Base

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

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.

view the full text of this article (5 pages, format: PDF, size= 240kB)

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