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Design of Zone-Based Hierarchical Protection System for 100% Renewable Microgrids: Preprint
Design of a reliable and secure protection system for a 100% renewable microgrid with only inverter-based resources (IBRs), is quite challenging. Most of the existing protection schemes in the state-of-the-art are suitable for microgrids with mixed-type of distributed energy resou...
Chakraborty, S. and Wang, J. NLR
May 31, 2024
Study of Inverter Control Strategies on the Stability of Low-Inertia Microgrid Systems
This paper investigates the stability of low-inertia microgrid systems with two control strategies that have different percentages of grid-forming (GFM) inverters. The first control strategy has approximately 50% GFM inverters, and all the battery inverters are working in GFM con...
Wang, J. and Saraswat, G. NLR
Dec 31, 2021
Post-Disaster Microgrid Formation for Enhanced Distribution System Resilience
This paper proposes a deep reinforcement learning (DRL) based approach for post-disaster critical load restoration in active distribution systems to form microgrids through network reconfiguration to minimize critical load curtailments. Distribution networks are represented as gra...
Gautam, M. et al University of Nevada Reno
Dec 31, 2021
U.S. Solar Photovoltaic System and Energy Storage Cost Benchmark: Q1 2020
NREL's cost benchmark report documents installed costs for solar PV and PV-plus-storage systems as of the first quarter of 2020. It uses a bottom-up methodology that captures variation in system design, regional labor rates and soft costs. The report shows that the cost of residen...
Feldman, D. et al NLR
Dec 31, 2020
An Innovative Energy Management System for Microgrids with Multiple Grid-Forming Inverters
As increasingly more grid-forming (GFM) inverter-based resources replace traditional fossil-fueled synchronous generators as the GFM sources in microgrids, the existing microgrid energy management systems (EMS) need to be updated to control and coordinate multiple GFM inverters th...
Comden, J. and Wang, J. NLR
Dec 31, 2023
Solar Photovoltaics in Severe Weather: Cost Considerations for Storm Hardening PV Systems for Resilience
Solar photovoltaic (PV) power has many advantages as a resilient power source, including the ability to provide power after a natural disaster. While solar arrays often survive severe weather events, systems are occasionally compromised and left unable to provide power. For PV sy...
Elsworth, J. and Van Geet, O. NLR
May 31, 2020
Modeled Hourly Tidal Current Velocities, Directions, and Heights from May 1 September 1, 2005 at Two Points Near East Forelands and Tyonek in Cook Inlet, Alaska
Collected by the University of Alaska Fairbanks, this data set contains modeled hourly tidal current velocities, directions, and tidal heights from May through September 2005 at two locations near East Forelands and Tyonek in Cook Inlet, Alaska. The data assist in assessing tidal ...
Bond, B. et al University of Alaska Fairbanks
Feb 08, 2023
DMS Advanced Applications for Accommodating High Penetrations of DERs and Microgrids: Preprint
Efficient and effective management of the electrical distribution system requires an integrated system approach for Distribution Management Systems (DMS), Distributed Energy Resources (DERs), Distributed Energy Resources Management System (DERMS), and microgrids to work in harmony...
Maitra, A. et al Electric Power Research Institute
Dec 31, 2016
Optimal Operation for Resilient and Economic Modes in an Islanded Alaskan Grid
Legacy energy management systems for distribution system or microgrids are typically driven by economics. During extreme events, resiliency can be defined as ability of the system to keep supplying critical loads. Resilient operation during extreme events (e.g. avalanche in Alaska...
Pandey, S. et al NLR
Dec 31, 2019
Unleashing the Frequency: Multi-Megawatt Demonstration of 100% Renewable Power Systems with Decentralized Communication-Less Control Scheme
Power systems, which range in size from small microgrids to island systems to large regional grids, are typically managed by a central controller that requires complex communication methods and can be unreliable and pose cyber security risks in certain applications, especially whe...
Koralewicz, P. et al NLR
Aug 31, 2022
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