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Detecting and Locating Faulty Nodes in Smart Grids Based on High Frequency Signal Injection

机译:基于高频信号注入的智能电网故障节点检测与定位

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摘要

An on-line method for detecting and locating a faulty node in the utility grid is proposed for smart grids. The method is based on injection of high frequency (A-Band) current signal into the grid that would impose voltages (less than 1V according to EN50065-1 standard) on the nodes to determine changes in the impedance characteristics. This detection is accomplished on-line without interrupting the power flow in the network. The developed algorithm has been implemented within an electrical power system model. This low voltage network model has been tested with different fault scenarios. The proposed procedure is able to detect the faulty nodes with high accuracy.
机译:针对智能电网,提出了一种在公用电网中检测和定位故障节点的在线方法。该方法基于将高频(A波段)电流信号注入电网,该电网将在节点上施加电压(根据EN50065-1标准,小于1V),以确定阻抗特性的变化。该检测是在线完成的,而不会中断网络中的潮流。所开发的算法已在电力系统模型中实现。该低压网络模型已经在不同的故障情况下进行了测试。所提出的过程能够高精度地检测出故障节点。

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