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Resilience and Economics of Microgrids with PV, Battery Storage, and Networked Diesel Generators
Current designs and assessments of microgrids have ignored component reliability, leading to significant errors in predicting a microgrid's performance while islanded. Existing life cycle cost studies on hybrid microgrids—which combine photovoltaics (PV), battery storage and net...
Marqusee, J. et al NLR
Dec 31, 2020
Diesel Generator Controller Evaluation via Controller-Hardware-in-the-Loop for Various Microgrid Operation Modes
This paper presents the Controller-Hardware-in-the-Loop (CHIL) evaluation of a diesel generator controller for various microgrid operation modes. The model of the diesel generator (governor, exciter, and primary control) is simulated in real time, and the secondary control is impl...
Wang, J. et al NLR
Jan 31, 2019
Understanding Line Losses and Transformer Losses in Rural Isolated Distribution Systems: Preprint
Rural, isolated power systems in the mainland U.S. and in states like Alaska and Hawaii are powered by assets like diesel generators. These rural, isolated power systems also cannot operate at the higher band of medium voltage (like 69kV). They are primarily in the 12 to 14 kV ran...
Prabakar, K. et al NLR
Feb 29, 2024
Integration of Electrolysis Systems Into Isolated Microgrid Systems at Extreme Cold Climates
Isolated microgrid systems are generally used to power communities in remote locations where transmission line installations are cost prohibitive. These systems are usually powered by diesel generators, delivering expensive energy with high carbon emissions. However, most of these...
Nemsow, N. et al Karlsruche Institute of Technology
Dec 31, 2024
Introducing Small Scale Waste-to-Energy Technology in Microgrids: Cooperative Research and Development Final Report, CRADA Number CRD-17-00703
Cogent has developed an innovative, proprietary waste-to-energy (WTE) system, the HelioStorm(TM) Gasifier, capable of efficiently operating on small amounts of heterogeneous municipal solid waste feedstocks, converting them into a clean syngas that can be used to fuel an electrici...
Kramer, B. NLR
Feb 28, 2022
Droop Control-Based Dispatch of an Islanded Microgrid with Multiple Grid-Forming Sources
Before rotating, fossil fuel-based, synchronous generators (SGs) are phased out, in line with renewable generation goals, grid-forming (GFM) inverters are expected to parallel SGs. Primary droop control allows GFM inverters to share power without communication; however, it is nece...
Ganguly, S. et al NLR
Dec 31, 2022
Heila Microgrid Controller Validation Using CUBE: Cooperative Research and Development Final Report, CRADA Number CRD-17-663
This CRADA facilitates validation of the Heila IQ controller (microgrid controller) using NREL's Consolidated Utility Base Energy (CUBE) hardware platform. The CUBE microgrid platform includes power electronics and controls to integrate PV, battery, and diesel generator assets to ...
Shirazi, M. and Mather, B. NLR
Jul 31, 2018
National Wind Energy Workforce Assessment Methods Report: Surveys and System Dynamics model
Technical reports summarizing scope, frameworks, and implementation considerations, with examples and references for practitioners. The material includes examples and references intended to guide adoption and implementation.
McDowell, B. and Stefek, J. NLR
Dec 31, 2023
Dispatching Grid-Forming Inverters in Grid-Connected and Islanded Mode
This paper explores the dispatchability of grid-forming (GFM) inverters in grid-connected and islanded mode. GFM inverters usually use droop control to automatically share power with other GFM sources (inverters and synchronous generators) and follow the change in the load demand;...
Wang, J. et al NLR
Dec 31, 2023
Development of a Practical Secondary Control for Hardware Microgrids
Practical, vendor-agnostic interoperability guidelines for the secondary control architecture of microgrids (MGs) with multiple grid-forming (GFM) inverter-based resources (IBRs) have not yet been developed. Therefore, this paper proposes a generic and vendor-agnostic secondary co...
Chakraborty, S. et al NLR
Dec 31, 2024
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