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5G Securely Energized and Resilient: Task 2 and 3 Progress Report
5G Securely Energized and Resilient (5G-SER) is a project funded by US DOD OUSD RandE in which NREL (NREL) developed, implement, and tested a wireless 5G architecture integrated with power systems components to perform research on its capabilities to provide low-latency, security,...
Rivera, J. et al NLR
Nov 30, 2023
Interoperable, Inverter Based Distributed Energy Resources Enable 100% Renewable and Resilient Utility Microgrids
As microgrids transition away from use of conventional generating resources and increasingly rely on renewable resources towards decarbonization goals, it is crucial to evaluate the capability inverter-based resources to provide microgrid stability and resilience. Particularly, mi...
Abcede, L. et al San Diego Electric and Gas
Dec 31, 2024
Operation of Grid Forming Converters as Self Excited Induction Generators Under Non-Ideal Loading Conditions
Self-excited induction generators offer a robust solution for power production for standalone as well as grid-connected systems. In general, self-excited induction generators require excitation capacitors which make use of the machine magnetization characteristics for voltage buil...
Roy Chowdhury, V. and Mather, B. NLR
Dec 31, 2023
Quantitative Small-Signal Stability Analysis of Grid-Forming Inverters in Large-Scale Power Systems
In this paper, the challenges induced by the integration of inverter-based resources (IBRs) into existing power systems are discussed. Although the grid-forming (GFM) control has been used to enhance system performance in multiple sections of electric power systems (e.g., transmis...
Ding, L. et al Purdue University
Dec 31, 2022
Investigating Multi-Microgrid Black Start Methods Using Grid-Forming Inverters
This paper examines state-of-the-art microgrid (MG) black-start technologies with grid-forming (GFM) inverter-based resources (IBRs) and proposes black start and interconnection methods for 100% inverter-based MGs. A multiple-MG approach is proposed and compared to the existing me...
Fix, E. et al Siemens
Dec 31, 2022
Synchronization of Lienard-Type Oscillators in Heterogenous Electrical Networks
Motivated by potential applications for power-electronic converters in microgrids, we study the problem of global asymptotic synchronization of Lienard-type nonlinear oscillators in heterogenous LTI electrical networks with series R-L circuits modeling interconnections. By heterog...
Johnson, B. et al University of Minnesota
Dec 31, 2017
Test of a 250 kVA Battery-Inverter System Micro-Grid: Cooperative Research and Development Final Report, CRADA Number CRD-11-460
Portland General Electric (PGE) is installing a 5-megawatt (MW) lithium-ion-based battery-inverter system (BIS) in Salem, Oregon, as part of the Pacific Northwest Smart Grid Demonstration Project. NREL will assist PGE in testing a 250-kilovolt-ampere (kVA) portion of the BIS in or...
Kramer, W. et al NLR
Nov 30, 2013
Implementation of Advanced Grid Support Functionalities by Smart Operation of Residential Loads with low Cost Converter Interface
This paper investigates a grid-supportive load concept for small-scale residential appliances, focusing on a residential refrigerator. Power consumption is adjusted based on grid conditions to achieve IEEE-1547 grid support functions. Two key aspects are presented: a low-cost refr...
Roy Chowdhury, V. et al NLR
Dec 31, 2023
Demonstrating Distribution System Resiliency through Grid-Edge Microgrids, on a Multi-Site Networked Hardware-in-Loop Platform
With the increasing penetration of Distributed Energy Resources (DERs) at the grid-edge, power systems include more energy storage, remote switches, relays, voltage regulators, and other intelligent electronic devices (IED). Effective control of these grid-edge devices by using Ad...
Chowdhury, P. et al University of North Carolina at Charlotte
Dec 31, 2021
A Power-Hardware-in-the-Loop (PHIL) Evaluation of Service Restoration With Networked Microgrids
This paper describes the power-hardware-in-the loop (PHIL) evaluation of the feasibility of service restoration solutions determined by the PowerModelsONM.jl tool. This tool incorporates microgrids and the networking of microgrids into its determination of an optimal service resto...
Jain, R. et al NLR
Dec 31, 2023
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