TITLE:
Modeling of Fuel Elements Cycling System in Pebble Bed Reactor Based on Timed Places Control Petri Nets
AUTHORS:
Hongbing Liu, Peng Shen, Dong Du, Xin Wang, Haiquan Zhang
KEYWORDS:
Timed Places Control Petri nets (TPCPN); Arena; Pebble Bed Reactors; Fuel Elements Cycling System (FECS)
JOURNAL NAME:
Energy and Power Engineering,
Vol.5 No.4B,
October
29,
2013
ABSTRACT: Pebble bed reactors use cycling scheme of spherical fuel
elements relying on fuel elements cycling system (FECS). The structure and
control logic of FECS are very complex. Each control link has strict
requirements on time and sequence. This increases the difficulties of
description and analysis. In this paper, timed places control Petri nets
(TPCPN) is applied for the modeling of FECS. On this basis the simulation of
two important processes, namely uploading fuel elements into the core for the
first time and emptying the core is finished by simulation software Arena. The
results show that as TPCPN is able to describe different kinds of logic
relationship and has time properties and control properties, it’s very suitable
for the modeling and analysis of FECS.