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高压电器  2014 

发电机断路器实时数字仿真建模

, PP. 96-101

Keywords: 发电机源短路故障, 发电机断路器, 实时数字仿真器, 录波回放

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Abstract:

通过引入可变电阻模型的方式,实现了电弧电阻模拟电弧电压的思路,在RTDS仿真环境中搭建了发电机断路器模型,并以该模型为基础,搭建了发电机源三相接地故障仿真网络。以具有最大非对称度的某相为例,分别仿真研究了发电机源三相接地故障后,不考虑发电机断路器开断过程中电弧电阻以及故障位置电阻时、仅考虑故障位置电阻时以及仅考虑发电机断路器开断过程中电弧电阻时,该相短路电流变化。最后,利用RTDS/RSCAD的Playback录波回放功能,分析比较了不同状况下的仿真结果,从而得出电弧对发电机断路器电源侧短路电流的影响。仿真结果可作为确定发电机断路器电源侧短路电流开断能力的参考依据。

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