Abstract This paper presents a fault location scheme for unbalanced and untransposed distribution systems which contain different types of distributed generation (DG). A general formula has been derived for any fault type using a limited number of synchronized measurement points. To avoid having to synchronize all the measurement points, the voltage and current measured locally at the DGs are processed locally to calculate the equivalent impedance of the DG at the non-fundamental frequencies. This is then used in the fault location process. The IEEE 34-bus feeder is simulated using the distributed parameter model for the lines and is used to validate the proposed scheme. Uncertainties associated with fault type, fault location, fault resistance, inception angle, noise in measurements and load profile are considered in the evaluation. The simulation studies demonstrate that the scheme can have a high accuracy and is robust.

中文翻译：

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使用有限数量的同步测量的有源未换位配电系统的故障定位方案

摘要 本文提出了一种包含不同类型分布式发电（DG）的不平衡和未换位配电系统的故障定位方案。已使用有限数量的同步测量点为任何故障类型推导出通用公式。为避免同步所有测量点，在 DG 本地测量的电压和电流在本地进行处理，以计算 DG 在非基频下的等效阻抗。然后在故障定位过程中使用它。IEEE 34 总线馈线使用线路的分布式参数模型进行仿真，并用于验证所提出的方案。评估中考虑了与故障类型、故障位置、故障电阻、起始角、测量噪声和负载曲线相关的不确定性。