Title :
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.
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;
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
DOI :
10.1109/ICEMS.2005.202950
