Power and Temperature Control of Nuclear Power Plant Based on Transfer Function Matrix Method

The paper presents the simple and efficient analysis method of frequency-domain to control the core power and coolant temperature of Nuclear Power Plants (NPPs). In order to properly describe the neutron kinetic and thermal transmission of NPPs, a one-dimensional dynamic model has been accomplished...

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Bibliographic Details
Published in:IEEE access 2021, Vol.9, p.33922-33928
Main Authors: Duan, Qizhi, Ping, Jialin, Xie, Hongyun, Wang, Chunbing, Li, Shuqiang
Format: Article
Language:English
Subjects:
Control stability
control strategy
Coolants
Dynamic models
Frequency domain analysis
Fuels
Heat transfer
Inductors
Laplace transforms
Mass flow
Mathematical model
Neutrons
Nuclear energy
Nuclear power plant
Nuclear power plants
power and temperature control system
RELAP5
Temperature control
Transfer functions
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Summary:The paper presents the simple and efficient analysis method of frequency-domain to control the core power and coolant temperature of Nuclear Power Plants (NPPs). In order to properly describe the neutron kinetic and thermal transmission of NPPs, a one-dimensional dynamic model has been accomplished by using the linearizing in time domain and discretizing in spatial domain, and then the transfer function matrix can be obtained through Laplace transform. Based on the transfer function matrix of NPPs, the effective of different system inputs: reactivity and feed water mass flow, can be analyzed by Nyquist method. On this basis, the power and temperature control system are presented, and the stability is proved in frequency domain. The proposed method is verified by RELAP5 that confirm its performance.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2021.3061474