Research on rotary-gas high voltage SF6 circuit breaker with novel blade nozzle Part III: Arc behavior research

Author

Cao, Yundong ; Wang, Shu ; Li, Jing ; Qi, Zhiming

Author_Institution

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

fYear

2011

fDate

23-27 Oct. 2011

Firstpage

135

Lastpage

138

Abstract

A 252kV single-break SF₆ circuit breaker is taken as the investigation model in this paper and 3D numerical calculation model of traditional no-blade nozzle and novel blade nozzle are presented based on 3D N-S equations. By simulating, influences of gas flow on arc during the arc extinguishing process of the two type nozzles have been researched using finite volume method (FVM). Arc extinction performance has been judged by comparison temperature, pressure and velocity vector of blade nozzle under different opening load. And the variation regular of energy is acquired by analyzing the maximum sections energy. Research indicates that blade nozzle can control gas flow movement effectively, accelerate arc energy dissipation, and benefit for the interruption of circuit breaker.

Keywords

SF₆ insulation; circuit breakers; circuit-breaking arcs; finite volume methods; 3D N-S equations; 3D numerical calculation model; FVM; arc energy dissipation; finite volume method; gas flow; no-blade nozzle; rotary-gas high voltage SF₆ circuit breaker; single-break SF₆ circuit breaker; voltage 252 kV; Blades; Circuit breakers; Fluid flow; Integrated circuit modeling; Mathematical model; Plasma temperature; Sulfur hexafluoride;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Power Equipment - Switching Technology (ICEPE-ST), 2011 1st International Conference on

Conference_Location

Xi´an

Print_ISBN

978-1-4577-1273-9

Type

conf

DOI

10.1109/ICEPE-ST.2011.6122953

Filename

6122953