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电网技术  2014 

大电网下基于故障域的PMU配置和故障定位新方法

DOI: 10.13335/j.1000-3673.pst.2014.11.039, PP. 3199-3204

Keywords: 故障配置域,PMU配置,线性规划,实时故障域,虚拟电流

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Abstract:

提出一种基于故障域的PMU配置和故障定位新方法。根据故障时PMU可观性的配置要求,在假想故障下划分全网的故障配置域,进行了基于故障配置域的PMU整数线性规划配置。系统发生故障时,根据各故障域内附加差动电流的响应,确定实时故障域,在实时故障域内采用虚拟电流法对故障进行了精确测距。算例分析表明,所提方法以少数的PMU配置实现故障网络的拓扑可观,为构建可靠经济的强壮电网监测系统提供了参考;故障域的实时响应使得快速锁定故障区域,防备连锁跳闸误动作成为可能;并且文中的故障测距技术对各种故障类型、故障位置以及线路结构均有良好的定位效果。

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