Detail publikace

Study of switching behaviour of g3 based gas mixtures

GORTSCHAKOW, S. UHRLANDT, D. KLOC, P. AUBRECHT, V. COUFAL, O. RENAN, D. ROBIN-JOUAN, P.

Originální název

Study of switching behaviour of g3 based gas mixtures

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Ten years after its invention, g(3)- the mixture of C4F7N, CO2 and O-2- remains the most promising candidate for the substitution of SF6 as an insulating and switching gas. The extension and optimization of g(3) applications at a high-voltage level, especially in circuit breakers, requires knowledge of the properties and dynamics of arc discharges in this gas. The features of the arc plasma can be obtained from appropriate magneto-hydrodynamic simulations. To predict the arc behaviour, a consistent set of thermo-physical and radiation properties is necessary. The corresponding database is calculated for the case of local thermodynamic equilibrium and covers the temperature range 250-40 000 K, the pressure range 0.01-150 bar and various contents of C4F7N, O-2 and Teflon (nozzle material). This contribution presents examples of plasma composition, thermo-physical and radiation properties for g(3) mixtures. The feasibility of the new database is demonstrated on an example of simulation results for a g(3)-filled high-voltage circuit breaker. Predicted arc voltage and pressure build-up in selected volumes are compared with available experimental data. Furthermore, to explore the differences in switching behaviour between g(3) and SF6, simulations for these two gases at the same operation conditions were performed. The space- and time-dependent temperature and pressure profiles are presented and discussed.

Klíčová slova

SF6 alternatives; C4F7N; thermal plasma properties; switching arc; transport properties; radiation properties

Autoři

GORTSCHAKOW, S.; UHRLANDT, D.; KLOC, P.; AUBRECHT, V.; COUFAL, O.; RENAN, D.; ROBIN-JOUAN, P.

Vydáno

6. 3. 2025

Nakladatel

IOP Publishing Ltd

Místo

BRISTOL

ISSN

1361-6463

Periodikum

Journal of Physics D - Applied Physics

Ročník

58

Číslo

15

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

17

Strany počet

17

URL

https://iopscience.iop.org/article/10.1088/1361-6463/adb858

BibTex

@article{BUT198030,
  author="Sergey {Gortschakow} and Dirk {Uhrlandt} and Petr {Kloc} and Vladimír {Aubrecht} and Oldřich {Coufal} and De Holanda Sousa {Renan} and Philippe {Robin-Jouan}",
  title="Study of switching behaviour of g3 based gas mixtures",
  journal="Journal of Physics D - Applied Physics",
  year="2025",
  volume="58",
  number="15",
  pages="1--17",
  doi="10.1088/1361-6463/adb858",
  issn="1361-6463",
  url="https://iopscience.iop.org/article/10.1088/1361-6463/adb858"
}