摘要
由于新型旋气喷口在喷口上游引入旋气槽,使灭弧室内部电场分布发生变化.采用有限元法,分析了旋气喷口对灭弧室电场造成的影响.通过改变旋气喷口的结构参数,如旋气槽的数量及偏转角度,对比得到了无槽结构和不同旋气喷口断路器在开断过程中,灭弧室内的最大电场强度变化及旋气槽内电场的变化规律.三维电场计算结果表明,新型旋气喷口绝缘性能良好,对灭弧室内部电场影响较小,从电场角度充分证明了旋气喷口的可行性.
The establishment!of rotary-gas grooves in the upstream area of nozzle will change the distribution of electric field in arc-quenching chamber. Thus,the influence of the rotary-gas nozzle on the electric field of arc-quenching chamber was analyzed using finite element method. Through changing the structural parameters of rotary-gas nozzle,such as quantity and angel of rotary-gas grooves,the maximum electric field strength variation in arc-quenching chamber and the electric field distribution in the rotary-gas grooves during the interrupting process were acquired. The 3D electric field calculation results show that novel rotary-gas nozzle has good insulation performance and less influence on the electric field in arc-quenching chamber. The feasibility of rotary-gas nozzle is verified from electric field aspect.
出处
《沈阳工业大学学报》
EI
CAS
2010年第1期11-15,共5页
Journal of Shenyang University of Technology
基金
国家自然科学基金资助项目(50677039)
辽宁省高等学校优秀人才支持计划(2008RC37)
关键词
高压SF6断路器
有限元法
喷口
旋气槽
灭弧室
结构参数
三维电场
绝缘性能
SF6 high voltage circuit breaker
finite element method
nozzle
rotary-gas groove
arc-quenching chamber
structural parameter
3D electric field
insulation performance
