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低压塑壳断路器三相短路开断特性的仿真分析 被引量：19

Simulation and Analysis of the Interruption Characteristics of Low Voltage Molded Case Circuit Breakers Under 3-Phase Short Circuit
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摘要 应用虚拟样机技术,建立了低压塑壳断路器MCCB操作机构运动特性的仿真模型,并用实验验证了模型的正确性。采用三维有限元分析计算出电动斥力与电流和触头开距之间的定量关系,然后通过对ADAMS的二次开发,耦合电路、电磁场和机械运动方程,考虑电动斥力的作用,分析了预期短路电流、机构开始动作时间以及气动斥力对于MCCB三相短路开断过程的影响。结果表明,提出的方法对于MCCB的分析、设计及优化是有效的。 A set of differential equations describes the coupling of electric circuit, electromagnetic field and mechanism system of molded case circuit breaker （MCCB） . With virtual prototyping technology, the simulation model for the operation mechanism of MCCB can be built, and experiments have verified the model. With 3-D finite element analysis, the electrodynamic repulsion force varied with the current and contact gap can be calculated. Then, with the existence of electro-dynamic repulsion force, the 3-phase short circuit interruption process of the MCCB has been investigated with the influence of prospective current, mechanism starting motion time and blow open force. It demonstrates the proposed method is effective and is capable of evaluating new design of MCCB products.
作者 李兴文 陈德桂 汪倩 李志鹏 王云峰
机构地区 西安交通大学电力设备电气绝缘国家重点实验室
出处 《电工技术学报》 EI CSCD 北大核心 2005年第10期76-82,87,共8页 Transactions of China Electrotechnical Society
基金 国家自然科学基金资助项目(50507016) 教育部博士点基金资助项目(20020698008)。
关键词 开断特性 气动斥力 操作机构 Interruption characteristics, blow open force, operation mechanism
分类号 TM561.1 [电气工程—电器]
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参考文献19

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二级参考文献20

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共引文献170

同被引文献125

引证文献19

二级引证文献85

电工技术学报
2005年 第10期

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