Design of a Receding Horizon Control System for Nuclear Reactor Power Distribution
- Chosun University (Korea, Republic of)
A receding horizon control method is applied to the axial power distribution control in a pressurized water reactor. The basic concept of receding horizon control is to solve on-line, at each sampling instant, an optimization problem for a finite future and to implement the first optimal control input as the current control input. Thus, it is a suitable control strategy for time-varying systems. The reactor model used for computer simulations is a two-point xenon oscillation model based on the nonlinear xenon and iodine balance equations and a one-group, one-dimensional, neutron diffusion equation with nonlinear power reactivity feedback that adequately describes axial oscillations and treats the nonlinearities explicitly. The reactor core is axially divided into two regions, and each region has one input and one output and is coupled with the other region. Through numerical simulations, it is shown that the proposed control algorithm exhibits very fast tracking responses due to the step and ramp changes of axial target shape and also works well in a time-varying parameter condition.
- OSTI ID:
- 20804727
- Journal Information:
- Nuclear Science and Engineering, Vol. 138, Issue 3; Other Information: Copyright (c) 2006 American Nuclear Society (ANS), United States, All rights reserved. http://epubs.ans.org/; Country of input: International Atomic Energy Agency (IAEA); ISSN 0029-5639
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALGORITHMS
COMPUTERIZED SIMULATION
CONTROL SYSTEMS
DESIGN
IODINE
NEUTRON DIFFUSION EQUATION
NONLINEAR PROBLEMS
ONE-DIMENSIONAL CALCULATIONS
OPTIMAL CONTROL
OPTIMIZATION
POWER DISTRIBUTION
PWR TYPE REACTORS
REACTIVITY COEFFICIENTS
REACTOR CORES
XENON
XENON OSCILLATIONS