基于逆变器的资源主导电网中单线接地故障的行为解释

IF 3.7 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Power Delivery Pub Date : 2025-06-20 DOI:10.1109/TPWRD.2025.3581815

Zhixin Miao;Lingling Fan;Normann Fischer

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引用次数: 0

摘要

保护工程师观察到，在使用电流（相位或序列）的基于逆变器的资源（IBR）高输入的电力系统中，在单线接地（SLG）故障期间，保护继电器很难识别故障相位。进一步的电磁瞬变（EMT）仿真研究表明，在SLG故障时，ibr的初始工作条件会影响相电流的响应。在这封信中，我们使用序列成分进行定量分析。我们发现，故障前条件决定了电网提供的电流与IBR提供的电流的相对位置，并进一步决定了在SLG条件下哪个相位的幅度最大。EMT仿真结果进一步验证了这一发现。

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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Behavior of Single-Line-Ground Faults in Inverter-Based Resource Dominated Grids Explained

It has been observed by protection engineers that it is difficult for a protective relay to identify the faulted phase during a single-line-ground (SLG) fault in a power system with a high ingression of inverter-based resources (IBR) using currents (phase or sequence). Further studies using electromagnetic transient (EMT) simulation show that the initial operating conditions of the IBRs influence the response of phase currents during an SLG fault. In this letter, we conduct a quantitative analysis using sequence components. We find that the pre-fault condition determines the relative position of the current contributed by the grid versus that from the IBR, and further dictates which phase has the largest magnitude during an SLG condition. This finding is further verified by the EMT simulation results.

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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.