模块化多断口真空断路器电位和电场分布研究  

Potential and Electric Field Distributions of Modular Multi-break Vacuum Circuit Breaker

作　　者：黄道春[1] 阮江军[1] 吴高波[1] 徐菁[1] 舒胜文[1] 张坤[1] 

机构地区：[1]武汉大学电气工程学院,武汉430072

出　　处：《高电压技术》2011年第1期124-130,共7页High Voltage Engineering

基　　金：国家"十一五"科技支撑计划(2009BAA19B05);国家电网公司重大科技项目(SG0846);中央高校基本科研业务费专项资金~~

摘　　要：为分析基于光控模块的三断口真空断路器的静态电位分布和真空灭弧室的电场分布,建立了模块化真空断路器的三维有限元分析模型。计算了竖直型和U型布置时的三断口真空断路器电位分布,采用子模型法分析了真空灭弧室内部的电场分布,同时进行了三断口真空断路器工频分压特性试验。计算与试验结果对比表明:两种布置方式下,高压端断口的试验与计算结果的相对误差<4.5%,三断口真空断路器的电压分布不均匀,高压端断口的分压超过60%,需配置合适的均压措施。计算和试验结果可为模块化多断口真空断路器的静态、动态绝缘特性设计,真空灭弧室的优化设计,多断口布置方式提供参考。In order to analyze the potential distributions of modular multi-break vacuum circuit breaker,formed with fiber-controlled vacuum circuit modules,and electric field distributions of vacuum interrupters,three-dimensional finite element models of modular triple-break vacuum circuit breakers were established.The potential distributions of the triple-break modular vacuum circuit breakers with vertical arrangement and U-shaped arrangement were obtained by using the finite element method（FEM）,and the sub-model method was adopted to analyze the electric field distributions interior the vacuum interrupters.The potential distributions of the triple-break vacuum circuit breakers under AC power frequency voltage were also measured.The comparison of the calculated and tested results indicate that,under vertical and U-shaped arrangement,the relative errors between calculated and tested results of high voltage break are lower than 4.5%,the voltage distribution of triple-break vacuum circuit breaker is non-uniform,and the voltage distribution of high voltage break is more than 60%,and suitable voltage sharing measures are needed.The calculated and tested results can be a reference for static and dynamic insulation characteristics design of multi-break vacuum circuit breaker,the optimization design of vacuum interrupter,and the modules arrangement of multi-break vacuum circuit breaker.

关 键 词：模块化真空断路器 真空灭弧室 有限元法(FEM) 电位分布 电场分布 工频分压特性试验 

分 类 号：TM561.2[电气工程—电器]