Single phase fault location in power distribution network using combination of impedance based method and voltage sage matching algorithm
Single phase fault location in power distribution network using combination of impedance based method and voltage sage matching algorithm
复制标题
基于阻抗的方法和电压稳定匹配算法相结合的配电网单相故障定位
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
R. Dashti
中科院分区：
文献类型：
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作者：
M. Daisy;R. Dashti
配电 (PD) 网络有许多支线和负载分接头。 PD系统中准确的故障定位可以提高可靠性指标及其效率。本文提出了一种新的组合方法来定位局部放电网络中的单相接地故障。在本文中，使用基于阻抗的故障定位算法来查找可能的故障位置。然后提出了利用电压暂降匹配算法确定故障区段的新方法。在该方法中，在发生单相接地故障后，使用基于阻抗的故障定位算法来确定可能的故障位置。在可能的位置分别模拟相同的故障。然后保存馈线起始处的电压并确定电压差的幅度和角度并生成在线数据库。该数据库与获得并记录的实际故障电压差的幅度和角度（在馈线开始处）进行比较。通过各个可能的故障位置的匹配值来确定故障的真实位置。
Power distribution (PD) networks have many laterals and load taps. Accurate fault locating in PD systems causes to improve reliability indices and its efficiency. In this paper, a new combined method is proposed for locating single phase fault to earth in PD networks. In this article, an impedance based fault-location algorithm is used to find the possible fault locations. Then the new method is proposed for determining the faulty section using voltage sag matching algorithm. In this method, after occurring single phase fault to ground, the possible locations of fault are determined using the impedance based fault-location algorithm. The same fault is simulated in possible locations, separately. Then the voltage at the beginning of feeder is saved and the amplitude and angle of the voltage differences are determined and online data bank is generated. This data bank is compared with the obtained and recorded amplitude and angle of the voltage differences (at the beginning of feeder) for actual fault. The real location of fault is determined by the matching value of each possible fault location.