Examination of EMT-Type Impedance Scanning Techniques for Small Signal Stability Assessment of Inverter Based Resources

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

IEEE Transactions on Power Delivery Pub Date : 2025-04-11 DOI:10.1109/TPWRD.2025.3559399

Lei Meng;Ulas Karaagac;Ahda Pavani;Jean Mahseredjian;Keijo Jacobs

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引用次数: 0

Abstract

Modern power grids that incorporate inverter-based resources (IBRs) may be vulnerable to persistent oscillations and instability incidents, which jeopardize the reliable operation of the system. Unstable operation conditions can be identified via impedance-based stability assessment (IBSA) methods, provided that accurate frequency-dependent impedance models of the system are available. A promising approach for obtaining such impedance models is to use time-domain simulation scanning techniques based on electromagnetic transient (EMT)-type software. This paper studies and compares five EMT-type impedance scanning methods in terms of their application procedures, analytical relationship between obtained impedances, IBSA accuracies, and computational burdens. Critical technical notifications and guidelines for the selection and application of these scanning methods, considering different types of instabilities, are provided. For accuracy assessment, the IBSA results are compared with EMT simulations on a practical test system.

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基于资源的逆变器小信号稳定性评估emt型阻抗扫描技术研究

包含逆变器资源（IBRs）的现代电网可能容易受到持续振荡和不稳定事件的影响，从而危及系统的可靠运行。如果系统具有准确的频率相关阻抗模型，则可以通过基于阻抗的稳定性评估（IBSA）方法识别不稳定的运行条件。利用基于电磁瞬变（EMT）型软件的时域模拟扫描技术是获得这种阻抗模型的一种很有前途的方法。本文对五种emt型阻抗扫描方法的应用程序、得到的阻抗之间的分析关系、IBSA精度和计算量进行了研究和比较。考虑到不同类型的不稳定性，提供了选择和应用这些扫描方法的关键技术通知和指南。为了评估精度，将IBSA结果与实际测试系统上的EMT模拟结果进行了比较。

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.