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电网技术  2014 

满足电压暂降与故障位置均可观的监测装置二阶段配置

DOI: 10.13335/j.1000-3673.pst.2014.11.034, PP. 3166-3172

Keywords: 电压暂降,二阶段配置,伪故障点,电压暂降可观,故障位置可观,虚拟监测

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Abstract:

为获得系统内暂降水平和暂降原因等信息,以暂降可观测区域法和故障定位法为基础,提出一种满足全网电压暂降和导致暂降的故障位置均可观的监测装置二阶段配置法。基于暂降可观测区域法,确定第1阶段的配置方案,实现全网电压暂降可观。基于故障定位法,引入虚拟监测的概念,以短路计算和对称分量法确定的不同故障类型引起的母线三相电压幅值和相位信息,确定导致被监测暂降事件的故障位置,建立全网故障定位矩阵;通过在剩余母线中逐步增加监测装置,消除所有伪故障点,确定第2阶段的配置方案,实现全网故障位置可观。对IEEE-30节点系统进行仿真,验证了方法的正确性和适用性。

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