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DOE OSTI · 3427081

Study the Protection Improvements for a Weak Grid Area With High IBRs

Wang, Jing [National Laboratory of the Rockies, Golden, CO (United States)]·Velaga, Yaswanth Nag [National Laboratory of the Rockies, Golden, CO (United States)] (ORCID:0000000305555825)·Hasan, Abu [National Laboratory of the Rockies, Golden, CO (United States)]
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Abstract

NLR is collaborating with Florida Power & Light (FPL) and GE to investigate power system stability and protection reliability challenges in a weak-grid region with high penetration of inverter-based resources (IBRs). This presentation will primarily focus on the protection aspects of the study. We will share key insights from this real-world project, including best practices for developing high-fidelity fault study models, establishing a controller-hardware-in-the-loop (CHIL) platform for testing physical relays, identifying system-level protection challenges, and designing enhanced protection schemes to address those issues. Through this discussion, the audience will gain practical understanding of protection studies in IBR-dominated systems, the emerging challenges associated with reduced fault current and altered transient behavior, and effective mitigation strategies. In particular, we will highlight the critical importance of IBR compliance with IEEE 2800-2022 to ensure dependable and secure protection relay operation in modern transmission systems.

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24 POWER TRANSMISSION AND DISTRIBUTION25 ENERGY STORAGE42 ENGINEERINGdistance protectionIEEE 2800power system protectionrelay misoperation

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Wang, Jing [National Laboratory of the Rockies, Golden, CO (United States)], Velaga, Yaswanth Nag [National Laboratory of the Rockies, Golden, CO (United States)] (ORCID:0000000305555825), Hasan, Abu [National Laboratory of the Rockies, Golden, CO (United States)]. 2026-08-13. Study the Protection Improvements for a Weak Grid Area With High IBRs. https://doi.org/10.66816/pr6366123

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