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Use of Traveling Wave Signatures in Medium-Voltage Distribution Systems for Fault Detection and Location
Protection systems are a critical feature for the proper operation of a power grid. Protection systems should be able to quickly detect, identify, locate, and isolate the faults within a time frame that prevents damage to grid components and reduces customer outages. As more inver...
Prabakar, K. et al NLR
Jul 31, 2021
Cybersecurity for Distributed Energy Resources: All Hazards Approach for Grid Modernization
Distributed energy resources (DER) sit at the intersection of IoT and critical infrastructure. As we work towards clean energy and decarbonization targets, high rates of growth of DER are expected, making them an important component of generation and grid services. They have been ...
Culler, M. Idaho National Laboratory
Dec 06, 2023
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
Cybersecurity Certification Standard for Distributed Energy and Inverter-Based Resources
NREL and UL co-presented on their joint effort to develop a cybersecurity certification standard for distributed energy resources (DERs) at a meeting of the Cybersecurity Advisory Team for State Solar (CATSS). The advisory team is hosted by NASEO and NARUC. The presentation outlin...
Saleem, D. and Slowinske, M. NLR
Jan 23, 2022
Clause-by-Clause Summary of Requirements in IEEE Std 1547-2018
This summary document distills the key requirements of the IEEE Std 1547-2018, the standard that defines the interconnection and interoperability criteria for distributed energy resources with electric power systems. Organized by clause, it outlines technical specifications relate...
Narang, D. et al NLR
Feb 29, 2020
Grid Application and Controls Development for Medium-Voltage SiC-Based Grid Interconnects: Preprint
In this paper, the grid-interconnection requirements of directly connected medium voltage (MV) SiC-based converters are studied and the necessary control implementations are detailed. These power electronic converters use the interconnection standard IEEE 1547-2018, but can also h...
Singh, A. et al NLR
Sep 30, 2020
Roadmap for Photovoltaic Cyber Security
Cyber-secure, resilient energy is paramount to the prosperity of the United States. As the experience and sophistication of cyber adversaries grow, so too must the US power system’s defenses, situational awareness, and response and recovery strategies. Traditionally, power syste...
Johnson, J. Sandia National Laboratories
Nov 30, 2017
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
Autonomous Microgrid Restoration Using Grid-Forming Inverters and Smart Circuit Breakers
The proliferation of distributed inverter-based resources (IBRs) raises the questions if these IBRs can be used to blackstart microgrids and distribution feeders after major outages. In this paper, we propose and evaluate an autonomous microgrid restoration concept using grid-for...
Banerjee, A. et al Siemens Technology
Dec 31, 2021
Considerations for Distributed Energy Resource Integration in Puerto Rico: Analytical Support for Interconnection and IEEE Std 1547-2018
This report documents collaborative efforts by several U.S. national laboratories to support Puerto Rico's integration of distributed energy resources (DER) into its electric grid. The multi-lab team provided technical analyses, grid modeling, and stakeholder engagement to develop...
Narang, D. et al NLR
Jan 31, 2021
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