Title :
Research on dielectric recovery characteristic and band width phenomena in high voltage SF6 circuit breaker
Author :
Cao, Yundong ; Liu, Xiaoming ; Li, Jing ; Hou, Chunguan
Author_Institution :
Electr. Eng. Dept., Shenyang Univ. of Technol., Shenyang
Abstract :
A new method combing improved total variation diminish scheme (TVD) with finite volume method (FVM) has been applied for calculating the N - S and K - epsiv equation of flow field in SF6 circuit breaker under cold gas breaking. In calculating, the influence of structure parameter on the interrupting performance is taken into consideration. Through the computation and analysis of dielectric recovery voltage, a new concept has been presented, that is, the dielectric recovery characteristic is a curve band with a certain fluctuation range. Moreover, the taboo search optimization algorithm has been improved and applied in optimizing the electric field distribution for improving the dielectric recovery characteristic.
Keywords :
SF6 insulation; circuit breakers; electric breakdown; search problems; FVM; TVD; band width phenomena; cold gas breaking; dielectric recovery voltage characteristics; electric field distribution; finite volume method; high voltage SF6 circuit breaker; interrupting performance; taboo search optimization algorithm; total variation diminish scheme; Boundary conditions; Circuit breakers; Computational modeling; Dielectrics; Equations; Finite volume methods; Fluid flow; Mathematical model; Sulfur hexafluoride; Voltage;
Conference_Titel :
Automation Congress, 2008. WAC 2008. World
Conference_Location :
Hawaii, HI
Print_ISBN :
978-1-889335-38-4
Electronic_ISBN :
978-1-889335-37-7
