Title :
Research on novel evaluation parameters of interruption performance in nozzle optimization for gas-blast circuit breaker
Author :
Cao, Yundong ; Liu, Yang ; Luo, Xiaoyuan ; Hou, Chunguan ; Liu, Xiaoming
Author_Institution :
Sch. of Electr. Eng., Shenyang Univ. of Technol., Shenyang
Abstract :
Optimization of interruption performance in high voltage circuit breaker is mainly the optimization of dielectric recovery, among which the nozzle optimization occupies an important position. Because the optimization of dielectric recovery involves numerical calculation of electric field and flow field, time consuming becomes the bottleneck of nozzle optimization. Therefore, a new calculation method is proposed, which chooses pressure in flow field in stead of dielectric recovery to represent interruption performance. The feasibility and validity of the research work have been verified by the demonstration example. Moreover, a new numerical computation method of dielectric recovery for electric apparatus has been provided.
Keywords :
dielectric materials; electric fields; gas blast circuit breakers; nozzles; optimisation; dielectric recovery; electric apparatus; electric field; flow field; gas-blast circuit breaker; high voltage circuit breaker; interruption performance; nozzle optimization; numerical computation method; Breakdown voltage; Circuit breakers; Dielectrics; Equations; Manufacturing; Numerical simulation; Power systems; Process design; Sulfur hexafluoride; Switchgear;
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
