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Artificial neural network reconstructs core power distribution
Nuclear Engineering and Technology, 2022, 54(2), , pp.617-626
[Peer Reviewed Journal]
2021 ;ISSN: 1738-5733 ;EISSN: 2234-358X ;DOI: 10.1016/j.net.2021.08.015
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Title:
Artificial neural network reconstructs core power distribution
Author:
Li, Wenhuai
;
Ding, Peng
;
Xia, Wenqing
;
Chen, Shu
;
Yu, Fengwan
;
Duan, Chengjie
;
Cui, Dawei
;
Chen, Chen
Subjects:
Artificial neural network
;
CNN
;
In-core power distribution
;
RBF
;
원자력공학
Is Part Of:
Nuclear Engineering and Technology, 2022, 54(2), , pp.617-626
Description:
To effectively monitor the variety of distributions of neutron flux, fuel power or temperatures in the reactor core, usually the ex-core and in-core neutron detectors are employed. The thermocouples for temperature measurement are installed in the coolant inlet or outlet of the respective fuel assemblies. It is necessary to reconstruct the measurement information of the whole reactor position. However, the reading of different types of detector in the core reflects different aspects of the 3D power distribution. The feasibility of reconstruction the core three-dimension power distribution by using different combinations of in-core, ex-core and thermocouples detectors is analyzed in this paper to synthesize the useful information of various detectors. A comparison of multilayer perceptron (MLP) network and radial basis function (RBF) network is performed. RBF results are more extreme precision but also more sensitivity to detector failure and uncertainty, compare to MLP networks. This is because that localized neural network could offer conservative regression in RBF. Adding random disturbance in training dataset is helpful to reduce the influence of detector failure and uncertainty. Some convolution neural networks seem to be helpful to get more accurate results by use more spatial layout information, though relative researches are still under way.
Publisher:
Elsevier B.V
Language:
English;Korean
Identifier:
ISSN: 1738-5733
EISSN: 2234-358X
DOI: 10.1016/j.net.2021.08.015
Source:
Alma/SFX Local Collection
DOAJ
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