Three Dimensional Electric Field in a Novel Rotary-Gas Nozzle Structure of SF6 Circuit Breaker

Author

Fu, Si ; Cao, Yundong ; Wang, Biao ; Liu, Xiaoming ; Liu, Yang

Author_Institution

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

fYear

2010

fDate

28-31 March 2010

Firstpage

1

Lastpage

4

Abstract

In this paper, the novel Rotary-Gas nozzle structure with the advantage of arc extinguishing capacity has been investigated. The 126kV SF₆ circuit breaker is taken as the investigation model and the novel structure with Rotary-Gas Grooves in the upstream nozzle is presented. Using Finite Element Method, it focuses the influence of Rotary-Gas groove on electric field in the arc-quenching chamber. To modify the structure parameters of Rotary-Gas nozzle, such as numbers and angle of Rotary-Gas grooves, the maximum electric field strength in arc-quenching chamber and the electric field distributions of the Rotary-Gas grooves during the interrupting process have been acquired, and compared with that of conventional nozzle. Based on the calculation electric field of Rotary-Gas nozzle, the satisfying results are obtained and illustrated. Moreover, it has been proved that the proposed novel Rotary-Gas nozzle has good insulation performance.

Keywords

circuit breakers; finite element analysis; nozzles; sulphur compounds; FEM; SF₆; arc-quenching chamber; circuit breaker; finite element method; maximum electric field strength; rotary gas nozzle structure; three dimensional electric field; upstream nozzle; voltage 126 kV; Circuit breakers; Computational modeling; Dielectrics and electrical insulation; Finite element methods; High performance computing; Interrupters; Manufacturing; Mathematical model; Sulfur hexafluoride; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Engineering Conference (APPEEC), 2010 Asia-Pacific

Conference_Location

Chengdu

Print_ISBN

978-1-4244-4812-8

Electronic_ISBN

978-1-4244-4813-5

Type

conf

DOI

10.1109/APPEEC.2010.5449439

Filename

5449439