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基于电磁斥力机构的10kV快速真空开关

, PP. 68-75

Keywords: 电磁斥力机构,快速开关,动态特性,有限元法,脉冲成形网络

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Abstract:

在合理简化的基础上,利用有限元方法建立了电磁斥力机构场路耦合瞬态动力学特性分析的二维有限元模型。为了验证仿真模型的正确性,建立了简化的实验验证模型,并在不同储能电压下对验证模型的放电电流以及满行程时间进行了实际测量,测量结果验证了仿真模型的正确性。在此基础上,就金属盘、分闸线圈的结构参数以及储能电容的容量对电磁斥力的影响进行了仿真分析,得出了一般性的设计指导原则。另外,为了进一步提高快速开关的分闸速度,提出了在线圈周围加装导磁材料以及利用脉冲成形网络作为其放电回路的方法,利用仿真模型对其效果进行了仿真分析。最后利用12kV-40kA-2500A真空开关管、双向电磁斥力机构以及可倒翻碟簧双稳机构研制了10kV快速真空开关样机,实测其固有分闸时间为0.5ms,满行程时间为1.6ms。

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