摘要
高压真空灭弧室设计的关键是电场的设计。提出一种高压真空灭弧室电场设计的新方法。根据击穿弱点理论,确定有均压屏蔽罩的高压真空灭弧室结构,然后应用有限元法和最优化理论,推导出真空灭弧室的电场数学模型进行优化。通过求解灭弧室内部的静电场定解问题,优化其内部几何参数,使灭弧室内部电场较均匀,电场强度的峰值出现在“第二辅助间隙”中。优化的参数结构提高了灭弧室的耐压能力。
Electric field optimization is a main task of designing high voltage vacuum interrupters. A new method of electric field design of high voltage vacuum interrupters is proposed. According to the vulnerable breakdown spots theory, the symmetrical voltage shields were proved to be helpful. With finite element method and the optimization theory, a mathematical model of electrical field intensity in interrupters was given. By solved this optimization model with finite element software, a more symmetrical electric field in vacuum interrupters was obtained and its peak value appeared in second auxiliary gap. So with this optimized structure the vacuum interrupters can endure higher voltage.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2005年第6期109-112,共4页
Proceedings of the CSEE
基金
国家自然科学基金项目(50377003)。~~
