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A new single end wideband impedance based fault location scheme for distribution systems

机译：基于单端宽带阻抗的分配系统故障定位方案

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摘要

This paper proposes an improved impedance based fault location scheme based on system analysis at non fundamental frequencies. The fault is treated as a voltage source that injects high frequency components into the system and the analysis is carried out using these injected components. The proposed method only requires local measurements at the substation and therefore is classified as a single end method. The new contribution is that the proposed method uses the distributed parameter line model to account for inductive and capacitive effects of the line. It has been evaluated on the IEEE 34-bus feeder which is based on an actual distribution system which has the typical features such as non-homogeneous feeder sections, asymmetrical line configurations, unbalanced loads and single and three-phase laterals. The fault point, fault resistance and fault inception angle have been varied to check their influence on the accuracy of the method. The simulation results demonstrate the accuracy of the proposed method where for most cases, the error in fault location is less than 50 m.
机译：本文提出了一种基于非基本频率的系统分析的基于阻抗的断层位置方案。故障被视为将高频分量注入系统中的电压源，并且使用这些注入的组件进行分析。所提出的方法仅需要在变电站处进行局部测量，因此被分类为单个结束方法。新的贡献是，所提出的方法使用分布式参数线模型来解释该线路的电感和电容效果。它已经在IEEE 34-母线馈线上进行评估，该馈线基于实际分配系统，该实际分配系统具有典型的特征，例如非均匀馈线部分，不对称线配置，不平衡负载和单个和三相侧向。故障点，故障和故障成立角度已经变化，以检查它们对方法的准确性的影响。仿真结果展示了所提出的方法的准确性，在大多数情况下，故障位置中的误差小于50米。

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