Investigation on chemically non-equilibrium arc behaviors of different gas media during arc decay phase in a model circuit breaker

Hao Sun, Yi Wu, Yasunori Tanaka, Kentaro Tomita, Mingzhe Rong

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The arc behaviors of different gas media, including air, N 2 and O 2 , during the current-zero period in the circuit breaker were investigated based on a non-chemically equilibrium (non-CE) model. The arc behaviors during the decay phase by the non-CE model were compared with those by the local thermally equilibrium (LTE) model. In the LTE model, since the thermodynamic and transport properties of air are quite similar to those of N 2 , the results indicate that the arc behaviors in these two gases are quite similar. On the contrary, the results by the non-CE model indicate that the arc behaviors of the air could be quite different from those of N 2 , which is caused by the different reaction processes due to the existence of both the N and O element in the air. It can be concluded that during the current-zero, the reaction process greatly influences the arc decaying behaviors, which cannot be considered in the convectional LTE model. Therefore, the non-CE model is very important to predict the arc behavior during the arc decay phase, and the validity of the non-CE model was further confirmed by the laser Thomson scattering in different gas media.

Original languageEnglish
Article number075202
JournalJournal of Physics D: Applied Physics
Volume52
Issue number7
DOIs
Publication statusPublished - Feb 13 2019

Fingerprint

circuit breakers
Electric circuit breakers
arcs
Gases
decay
gases
air
Air
Thomson scattering
Transport properties
Thermodynamic properties
thermodynamic properties
transport properties
Scattering
Lasers

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

Cite this

Investigation on chemically non-equilibrium arc behaviors of different gas media during arc decay phase in a model circuit breaker. / Sun, Hao; Wu, Yi; Tanaka, Yasunori; Tomita, Kentaro; Rong, Mingzhe.

In: Journal of Physics D: Applied Physics, Vol. 52, No. 7, 075202, 13.02.2019.

Research output: Contribution to journalArticle

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