真空断路器相间磁场影响分析  

Analysis of phases magnetic field influence in vacuum circuit breaker

作　　者：侯春光[1] 曹云东[1] 来常学[1] 孙静[2] 

机构地区：[1]沈阳工业大学电气工程学院,辽宁沈阳110023 [2]沈阳产品质量检验研究所,辽宁沈阳110021

出　　处：《沈阳工业大学学报》2004年第3期274-276,286,共4页Journal of Shenyang University of Technology

摘　　要：基于真空断路器的结构,采用有限元方法建立了三相真空断路器的磁场数学模型.通过对真空断路器在分断过程中三相电流在整个变量周期内的数值模拟,得到了三相电流在不同相位角时对相间磁场的影响.为了降低相间磁场的相互影响,在三相灭弧室间以铁磁材料作为屏蔽,分析了在不同长度和厚度的铁磁材料下,最大磁感应强度值产生的变化,为真空断路器向大电流、小型化发展提供了理论依据.Based on the Vacuum Circuit Breaker (VCB) structure,adopting the Finite Element Method (FEM),magnetic field mathematics model of three phases VCB is established.Through the whole cycle numerical simulation to three phases current in the opening course,the magnetic field influences at different phase angles of three phases current are clearly obtained.In order to reduce the interactional influences,the ferrous materials are put in the middle of every phase as shield.The varieties of maximum magnetic induction strength in different length and thickness of ferrous materials are obtained.The theory foundations of VCB developed for large capacity and miniaturization are provided.

关 键 词：相间磁场 真空断路器 数值分析 

分 类 号：TM561.2[电气工程—电器]