Grid-Forming IBRs Under Unbalanced Grid Conditions: Challenges, Solutions, and Prospects

IF 10 1区工程技术 Q1 ENERGY & FUELS

IEEE Transactions on Sustainable Energy Pub Date : 2025-06-06 DOI:10.1109/TSTE.2025.3577568

Xinquan Chen;Siqi Bu;Ilhan Kocar

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Abstract

The penetration of inverter-based resources (IBRs) into the grid is experiencing significant growth. Their control behavior during unbalanced grid conditions can impact system stability and protection. This paper evaluates the performance of prevalent grid-forming control-based IBRs (GFM-IBRs) under unbalanced grid conditions and proposes novel insights in a novel framework. First, we investigate the potential impacts of grid-forming control-based IBRs (GFM-IBRs) on system dynamics, protection, and fault ride-through (FRT) capability under unbalanced grid conditions based on extensive literature review and through EMT simulations in benchmark systems with IBRs. To discover these impacts and accommodate unbalanced grid conditions, we implement a generic control structure for full converter-based GFM-IBRs under FRT mode, then perform a comparative analysis of existing solutions that include sequence decomposition methods, positive sequence current-limiting methods, negative sequence controls, and current coordination methods, to identify their capabilities and limitations through literature review and EMT simulations in a large-scale power system. Finally, key challenges and solutions are discussed, highlighting prospects for future research.

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不平衡网格条件下的网格形成ibr：挑战、解决方案和前景

基于逆变器的资源（ibr）在电网中的渗透正在显著增长。它们在电网不平衡状态下的控制行为会影响系统的稳定性和保护性能。本文评估了当前流行的基于网格形成控制的IBRs （ggm -IBRs）在不平衡网格条件下的性能，并在一个新的框架中提出了新的见解。首先，我们研究了基于电网形成控制的IBRs （ggm -IBRs）在不平衡电网条件下对系统动力学、保护和故障穿越（FRT）能力的潜在影响，这是基于广泛的文献综述和基于IBRs的基准系统的EMT模拟。为了发现这些影响并适应不平衡电网条件，我们在FRT模式下实现了基于全变流器的GFM-IBRs的通用控制结构，然后对现有的解决方案进行了比较分析，包括序列分解方法、正序限流方法、负序控制和电流协调方法，通过文献综述和大规模电力系统的EMT仿真来识别它们的能力和局限性。最后，讨论了主要挑战和解决方案，并对未来的研究进行了展望。

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 Sustainable Energy ENERGY & FUELS-ENGINEERING, ELECTRICAL & ELECTRONIC

CiteScore

21.40

自引率

5.70%

发文量

215

审稿时长

5 months

期刊介绍： The IEEE Transactions on Sustainable Energy serves as a pivotal platform for sharing groundbreaking research findings on sustainable energy systems, with a focus on their seamless integration into power transmission and/or distribution grids. The journal showcases original research spanning the design, implementation, grid-integration, and control of sustainable energy technologies and systems. Additionally, the Transactions warmly welcomes manuscripts addressing the design, implementation, and evaluation of power systems influenced by sustainable energy systems and devices.