Research on single-phase grounding fault location technology in distribution networks based on impedance method

IF 1.4 4区物理与天体物理 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

AIP Advances Pub Date : 2024-09-10 DOI:10.1063/5.0225951

Sha Wang, Shengkai Wei

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引用次数: 0

Abstract

This article mainly introduces the impedance based single-phase grounding fault location method for distribution networks, including its theoretical basis, algorithm steps, and simulation verification. First, starting from the impedance analysis of the transmission line model, the method of accurately measuring the location of the fault point through phase domain analysis is explained. Next, the process of impedance analysis for single-phase grounding faults was described in detail, that is, how to solve the impedance of the grounding fault points by calculating the voltage and current signals. Then, the specific process of the impedance based grounding fault location algorithm was introduced, including the calculation of equivalent load impedance, the calculation of starting voltage and current, the calculation of grounding current, and the solution of fault point location. Finally, simulation verification was conducted using an IEEE 34 node distribution system example in a MATLAB/Simulink environment, and the results showed that the algorithm has high positioning accuracy, with a maximum error of within 3%.

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基于阻抗法的配电网单相接地故障定位技术研究

本文主要介绍基于阻抗的配电网单相接地故障定位方法，包括其理论基础、算法步骤和仿真验证。首先，从输电线路模型的阻抗分析入手，阐述了通过相域分析精确测量故障点位置的方法。接着，详细介绍了单相接地故障的阻抗分析过程，即如何通过计算电压和电流信号来求解接地故障点的阻抗。然后，介绍了基于阻抗的接地故障定位算法的具体过程，包括等效负载阻抗的计算、起始电压和电流的计算、接地电流的计算以及故障点定位的求解。最后，在 MATLAB/Simulink 环境中以 IEEE 34 节点配电系统为例进行了仿真验证，结果表明该算法定位精度高，最大误差在 3% 以内。

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

AIP Advances NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

2.80

自引率

6.20%

发文量

1233

审稿时长

2-4 weeks

期刊介绍： AIP Advances is an open access journal publishing in all areas of physical sciences—applied, theoretical, and experimental. All published articles are freely available to read, download, and share. The journal prides itself on the belief that all good science is important and relevant. Our inclusive scope and publication standards make it an essential outlet for scientists in the physical sciences. AIP Advances is a community-based journal, with a fast production cycle. The quick publication process and open-access model allows us to quickly distribute new scientific concepts. Our Editors, assisted by peer review, determine whether a manuscript is technically correct and original. After publication, the readership evaluates whether a manuscript is timely, relevant, or significant.