Multi-stage convergent-divergent nozzle structure and their effects on gas flow in high voltage SF/sub 6/ circuit breaker

Author

Cao, Yundong ; Liu, Xiaoming ; Zong, Ming ; Liu, Yan

Author_Institution

Sch. of Electr. Eng., Shenyang Univ. of Technol.

Volume

3

fYear

2005

fDate

29-29 Sept. 2005

Firstpage

2165

Abstract

A novel combined improved total variation diminish scheme (TVD) with finite volume method (FVM) has been proposed and applied for calculating the N-S and K-epsi equation of flow field in SF₆ circuit breaker under no-load breaking in this paper. And during the computing, the influence of actual nozzle structure is taken into consideration. Through the computation and analysis of combined electric field and flow field, the effect of gas flow on the dielectric recovery characteristic with different multi-stage convergent-divergent nozzle structure and their effects on gas flow in high voltage SF₆ circuit breaker have been obtained and analyzed

Keywords

SF₆ insulation; circuit breakers; finite volume methods; nozzles; combined electric field; dielectric recovery characteristic; finite volume method; gas flow; high voltage SF₆ circuit breaker; multistage convergent-divergent nozzle structure; total variation diminish scheme; Circuit analysis computing; Circuit breakers; Dielectrics; Finite volume methods; Fluid flow; Laplace equations; Navier-Stokes equations; Sulfur hexafluoride; Switchgear; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2005. ICEMS 2005. Proceedings of the Eighth International Conference on

Conference_Location

Nanjing

Print_ISBN

7-5062-7407-8

Type

conf

DOI

10.1109/ICEMS.2005.202950

Filename

1575147