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首页> 外文期刊>Electric power systems research >A new single end wideband impedance based fault location scheme for distribution systems
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A new single end wideband impedance based fault location scheme for distribution systems

机译：一种新的基于单端宽带阻抗的配电系统故障定位方案

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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：本文基于非基本频率的系统分析提出了一种改进的基于阻抗的故障定位方案。将故障视为将高频分量注入系统的电压源，并使用这些注入的分量进行分析。所提出的方法仅需要变电站的局部测量，因此被归类为单端方法。新的贡献在于，所提出的方法使用分布式参数线模型来考虑线的感性和电容性影响。它已在基于实际配电系统的IEEE 34总线馈线上进行了评估，该馈线系统具有典型的功能，例如非均匀馈线段，不对称线路配置，不平衡负载以及单相和三相支路。改变了故障点，故障电阻和故障起始角度，以检查它们对方法准确性的影响。仿真结果证明了该方法的准确性，在大多数情况下，故障位置的误差小于50 m。

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