Feature extraction and identification techniques for the alignment of perturbation simulations with power plant measurements
Paper in proceeding, 2021

In this work, a methodology is proposed for the comparison of the measured and simulated neutron noise signals in nuclear power plants, with the simulation sets having been generated by the CORE SIM+ diffusion-based reactor noise simulator. More specifically, the method relies on the computation of the Cross-Power Spectral Density of the detector signals and the subsequent comparison with their simulated counterparts, which involves specific frequency values corresponding to the signals’ high energy content. The different simulated perturbations considered are (i) axially traveling perturbations, (ii) fuel assembly vibrations, (iii) core barrel vibrations, and finally (iv) generic “absorber of variable strength” types. The reactor core used for the current study is a German 4-loop pre-Konvoi Pressurized Water Reactor.

perturbation identification

neutron noise

cross-power spectral density

core diagnostics

simulation

CORE SIM+

feature extraction

Author

G. Ioannou

National Technical University of Athens (NTUA)

T. Tasakos

National Technical University of Athens (NTUA)

Antonios Mylonakis

Chalmers, Physics, Subatomic, High Energy and Plasma Physics

G. Alexandridis

National Technical University of Athens (NTUA)

Christophe Demaziere

Chalmers, Physics, Subatomic, High Energy and Plasma Physics

Paolo Vinai

Chalmers, Physics, Subatomic, High Energy and Plasma Physics

A. Stafylopatis

National Technical University of Athens (NTUA)

Proc. Int. Conf. Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C2021)

2048-2059
9781713886310 (ISBN)

2021 International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2021
Online, USA,

Core monitoring techniques and experimental validation and demonstration (CORTEX)

European Commission (EC) (EC/H2020/754316), 2017-09-01 -- 2021-08-31.

Areas of Advance

Energy

Subject Categories

Other Physics Topics

Control Engineering

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.13182/M&C21-33674

More information

Latest update

2/9/2024 1