Numerical simulation of vacuum arc under different axial magnetic fields and different erosion rates - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2023

Numerical simulation of vacuum arc under different axial magnetic fields and different erosion rates

Simulation numérique d'un arc dans le vide pour différents champs magnétiques appliqués et différents taux d'érosion.

Résumé

Vacuum arc plasmas with external magnetic field (AMF) are successfully used in commercial vacuum switches for medium voltage distribution networks since several decades [1-2]. Extending the technique of these switching arcs to high currents (several tens of kA) and high voltages (over 100 kV) is a technological challenge that requires the help of models. Improvement of the design and operation ofvacuum interrupters largely depends on a good understanding of the vacuum arc physics. During the last decade, the subject received considerable attention, with significant efforts made in taking into account a greater number of phenomena. Some advances have been made in the physical modeling of vacuum arcs [3-7] and a large number of physical phenomena have been studied. Nevertheless, it is still difficult to conclude on the influence of each specific parameter and the basis of the model used are sometimes not well explained. In this paper, we present a three dimensional (3D) numerical model that describes high-current vacuum arc in subsonic regime between copper contacts under the influence of a AMF field. The model is based on a MHD approach of the inter-electrode plasma and is realized with commercial software Ansys Fluent. Only the plasma area is modeled. The electrodes behavior are taken into account through specific boundary conditions like in the literature. We describe the model, the boundary conditions, and we present simulation results.
Fichier non déposé

Dates et versions

hal-04228150 , version 1 (04-10-2023)

Licence

Domaine public

Identifiants

  • HAL Id : hal-04228150 , version 1

Citer

Claire Simonnet, Pierre Freton, Jean-Jacques Gonzalez, Frank Reichert, Petchanka Arkadz. Numerical simulation of vacuum arc under different axial magnetic fields and different erosion rates. 24th Symposium on Physics of Switching Arc (FSO), Sep 2023, Nove Mesto na Morave, Czech Republic. ⟨hal-04228150⟩
9 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More