Fault location in medium voltage (MV) electricity distribution networks has always been a challenge, in particular, for the last few years. The existence of information only at the beginning of the feeder and the complexity of the widespread and scattered distribution networks make fault location of MV distribution networks a difficult task. The performance of most of the existing methods for fault location is compromised when dealing with today’s MV distribution grid. In this paper, a new fault location method is introduced for MV distribution networks, using transient frequency analysis. The transient caused by fault in the network is analyzed. The main idea of fault location algorithm is to determine and measure the Analysis Index. The location of fault is identified through the relationship between the proposed Analysis Index and different sections in the distribution feeder. In order to evaluate and analyze the proposed method, at first a standard IEEE 11-node network is simulated and tested in MATLAB software, then the same procedure is repeated for a real 69-node network. The results confirm a good performance.

中文翻译：

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传统配电系统单相故障定位的智能且经济高效的方法

中压 (MV) 配电网络中的故障定位一直是一个挑战，尤其是在过去几年中。信息只存在于馈线的起点，分布广泛且分散的配电网的复杂性使得中压配电网的故障定位成为一项艰巨的任务。在处理当今的中压配电网时，大多数现有的故障定位方法的性能都会受到影响。在本文中，使用瞬态频率分析为 MV 配电网络引入了一种新的故障定位方法。分析了由网络故障引起的瞬态。故障定位算法的主要思想是确定和测量分析指标。通过建议的分析指标与配电馈线中不同部分之间的关​​系来识别故障位置。为了评估和分析所提出的方法，首先在 MATLAB 软件中模拟和测试标准的 IEEE 11 节点网络，然后对真实的 69 节点网络重复相同的过程。结果证实了良好的性能。