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首页> 外文会议>Asia-Pacific Power and Energy Engineering Conference >Research on Algorithm for Single-Phase-to-earth Fault Section Location in Medium Voltage Distribution
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Research on Algorithm for Single-Phase-to-earth Fault Section Location in Medium Voltage Distribution

机译：中电压分布中单相位接地故障部分位置的算法研究

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摘要

Due to the large amount of branches and high grounding resistance of distribution grid, the grounding fault location has not been solved effectively. This paper proposes a Matrix-based live location method for single-phase-to-earth fault section in medium voltage distribution grid. Fault message character matrix is designed according to data measured by FTU. For neutral point insulation systems, the element of character matrix is the phase difference between zero-sequence voltage and zero-sequence current measured by FTU. For neutral point grounded by arc-suppression coil systems, the element of character matrix is the variant of zero-sequencecurrent measured by FTU using the theory of remnant current increment. Through analysis to character matrix using united criterion, fault section is determined and the solution is analyzed when fault information is not completed. The correctness and feasibility of this technology has been fully approved by site experiments.
机译：由于分支的大量分支和分布栅的高接地电阻，尚未有效地解决了接地故障位置。本文提出了一种基于矩阵的实时定位方法，用于中电压分布网格中的单相位接地故障部分。故障消息字符矩阵根据FTU测量的数据设计。对于中性点绝缘系统，字符矩阵的元素是由FTU测量的零序电压和零序电流之间的相位差。对于由弧形抑制线圈系统接地的中性点，字符矩阵的元素是通过FTU使用剩余电流增量理论测量的零序列涡流的变体。通过分析使用United Criterion来进行字符矩阵，确定故障部分并在未完成故障信息时分析解决方案。该技术的正确性和可行性已由现场实验完全批准。

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