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Study of Seamless Microgrid Transition Operation Using Grid-Forming Inverters
This paper investigates operational techniques to achieve seamless (smooth) microgrid (MG) transitions by dispatching a grid-forming (GFM) inverter. In traditional approaches, the GFM inverter must switch between grid-following (GFL) and GFM control modes during MG transition oper...
Wang , J. et al NLR
Dec 31, 2022
Radiance Executive Summary
This executive summary outlines the objectives, methodology, and early outcomes of the Radiance project, a collaborative effort within the Grid Modernization Laboratory Consortium to improve modeling and analysis of emerging energy technologies. It summarizes key findings, stakeho...
NLR
Nov 30, 2023
BPS-Connected Inverter-Based Resource Modeling and Studies Webinar
Recorded webinar presenting recommended practices for BPS studies with inverter‑based resources. The session reviews model types and parameterization, short‑circuit and stability studies, screening and data needs, and validation against field tests. Examples illustrate sensiti...
Force, T. North American Electric Reliability Corporation
Jun 07, 2020
Prevention of Unintentional Islands in Power Systems with Distributed Resources
This resource examines the phenomenon of unintentional islanding when a portion of the grid continues to be energized by distributed energy resources during a larger outage. It describes potential risks to safety and equipment, reviews existing standards and detection methods, and...
Kroposki, B. NLR
Aug 23, 2016
Experimental Characterization Test of a Grid-Forming Inverter for Microgrid Applications
Standardized experimental testing protocols for grid forming (GFM) inverters to ensure expected operation under both normal and contingency conditions do not exist. Such protocols increase the confidence of system owner/operators that an inverter deployed in a proposed system will...
Wang, J. et al NLR
Dec 31, 2022
Black Start of Unbalanced Microgrids Harmonizing Single and Three-Phase Grid-Forming Inverters: Preprint
As power systems are transforming with increasing penetrations of inverter-based resources (IBRs), system restoration using IBRs has drawn attention. Using distributed grid-forming (GFM) assets located near critical loads, either three-phase or single-phase, to establish microgrid...
Seo, G. et al NLR
Jul 31, 2023
Lithium-ion Battery Storage Technical Specifications
This FEMP publication provides technical specifications to assist federal agencies in procuring lithium-ion battery energy storage systems. It outlines requirements for system capacity, safety, performance, warranties, testing, and integration with existing infrastructure. The doc...
Program, M. U.S. Department of Energy
Apr 06, 2024
Revision of IEEE Std 1547: Additional Topics
This TechSurveillance article is the last in a series of four articles that describe the changes proposed for IEEE 1547, provide the rationale for these changes, and describe how they will affect the planning, design, protection, and operation of rural electric cooperative distri...
Walling, R. Walling Energy Systems Consulting, LLC
Mar 31, 2017
Transient Stability Study of a Real-World Microgrid with 100% Renewables
This paper performs a transient stability study of a real-world microgrid that can operate with 100% renewables to better understand the stability and reliability of the microgrid under various dynamic scenarios. In particular, the operation of multiple grid-forming (GFM) and grid...
Velaga, Y. et al NLR
Dec 31, 2021
An Overview of Distributed Energy Resource (DER) Interconnection: Current Practices and Emerging Solutions
This guidebook provides an overview of key issues for utilities and utility regulators to consider as deployments of distributed energy resources (DER) increase, including what has been tried in the field and emerging good practices. Topics covered include: Interconnection Applica...
Horowitz, K. et al NLR
Mar 31, 2019
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