Faulty Feeder Detection for Distribution Networks With IIDGs Based on Path Graph and Graph Fourier Transform

IF 3.8 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Power Delivery Pub Date : 2025-03-24 DOI:10.1109/TPWRD.2025.3554362

Feipeng Lu;Sichen Lu;Yuyong Zhu;Shilin Gao;Bobin Hou;Shaoxiong Wang;Yuwen Qin;Chao Qian

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引用次数: 0

Abstract

A novel method for the detection of faulty feeders for distribution networks with inverter-interfaced distributed generators (IIDGs) during single-phase-ground(SPG) fault has been introduced. This method leverages the frequency domain features of the graph Fourier transform (GFT) of the associated path graph. Firstly, the impact of IIDGs on the transient zero-sequence current (TZSC) at the fault point is analyzed through the sequence network connection. Secondly, the TZSC in the selected frequency bands are studied by using the GFT analysis of the path graph, revealing distinct differences between faulty and healthy feeders. The GFT frequency domain characteristics for the path graph are extracted by employing the Hausdorff distance (HD) and Pearson correlation coefficient (PCC). The combination of the HD and PCC indexes, utilizing the Laplace distribution density curve, enables the identification of the faulty feeder through a comparative analysis of the areas formed by the resulting density curve. The simulation results demonstrate the ease of implementation, reliability in faulty feeder detection, and adaptability and robustness for different IIDG capacities, fault locations, transition resistances, and fault initial conditions.

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基于路径图和傅立叶变换的iidg配电网馈线故障检测

介绍了一种单相接地故障时逆变器接口分布式发电机配电网馈线故障检测的新方法。该方法利用了相关路径图的傅立叶变换（GFT）的频域特征。首先，通过序网连接分析了iidg对故障点暂态零序电流（TZSC）的影响；其次，利用路径图的GFT分析研究了所选频带的TZSC，揭示了故障馈线和健康馈线之间的明显差异。利用Hausdorff距离（HD）和Pearson相关系数（PCC）提取路径图的GFT频域特征。结合HD和PCC指标，利用拉普拉斯分布密度曲线，通过对比分析所得密度曲线形成的区域，可以识别出故障的给料机。仿真结果表明，该方法易于实现，故障馈线检测可靠，对不同的IIDG容量、故障位置、过渡电阻和故障初始条件具有适应性和鲁棒性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Power Delivery 工程技术-工程：电子与电气

CiteScore

9.00

自引率

13.60%

发文量

513

审稿时长

6 months

期刊介绍： The scope of the Society embraces planning, research, development, design, application, construction, installation and operation of apparatus, equipment, structures, materials and systems for the safe, reliable and economic generation, transmission, distribution, conversion, measurement and control of electric energy. It includes the developing of engineering standards, the providing of information and instruction to the public and to legislators, as well as technical scientific, literary, educational and other activities that contribute to the electric power discipline or utilize the techniques or products within this discipline.