Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Learning Data-Driven Stable Corrections of Dynamical Systems. Application to the Simulation of the Top-Oil Temperature Evolution of a Power Transformer

Version 1 : Received: 26 June 2023 / Approved: 27 June 2023 / Online: 27 June 2023 (11:53:50 CEST)

A peer-reviewed article of this Preprint also exists.

Ghnatios, C.; Kestelyn, X.; Denis, G.; Champaney, V.; Chinesta, F. Learning Data-Driven Stable Corrections of Dynamical Systems—Application to the Simulation of the Top-Oil Temperature Evolution of a Power Transformer. Energies 2023, 16, 5790. Ghnatios, C.; Kestelyn, X.; Denis, G.; Champaney, V.; Chinesta, F. Learning Data-Driven Stable Corrections of Dynamical Systems—Application to the Simulation of the Top-Oil Temperature Evolution of a Power Transformer. Energies 2023, 16, 5790.

Abstract

Many engineering systems are described by using differential models whose solutions, generally obtained after discretization, can exhibit a noticeable deviation with respect to the response of the physical systems that those models are expected to represent. In those circumstances one possibility consists of enriching the model in order to reproduce the physical system behavior. The present paper considers a dynamical system, and proposes enriching the model solution by learning the dynamical model of the gap between the system response and the model-based prediction, while ensuring that the time integration of the learnt model remains stable. The proposed methodology is applied on the simulation of the top-oil temperature evolution of a power transformer, whose data is provided by RTE, the French Electricity Transmission System Operator.

Keywords

Stable integrator; Hybrid Twin; Machine Learning; Dynamical system; Power transformer; Monitoring

Subject

Engineering, Electrical and Electronic Engineering

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