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Circulating Current Reduction of Back-to-Back MMC with Advanced Grid-Support Functionalities for Medium-Voltage Applications
A Lyapunov energy function based circulating current reduction scheme for a back to back modular multilevel converter based system for a microgrid application has been proposed in this digest. In order to ensure no circulating or zero sequence currents within the modules, the dyn...
Roy Chowdhury, V. et al NLR
Dec 31, 2022
Microgrids for Energy Resilience: A Guide to Conceptual Design and Lessons from Defense Projects
This playbook from the Rocky Mountain Institute offers a comprehensive framework for regulators, utilities, and developers to design and implement non-wires solutions (NWS). NWS are alternatives to conventional grid infrastructure upgrades that use distributed resources, demand re...
Booth, S. et al NLR
Dec 31, 2019
uGrid: Reliable Minigrid Design and Planning Toolset for Rural Electrification
Introduces uGrid, an open-source minigrid design and planning toolset created with minigrid developers to support rural electrification. Integrates equipment sizing and resource allocation with uGridNet for distribution network layout and reliability cost–benefit analysis, inclu...
Cicilio, P. et al Oregon State University
Nov 10, 2019
Guide to the IEEE 1547-2018 Standard and Its Impact on Cooperatives
Produced by the National Rural Electric Cooperative Association (NRECA), this guide helps electric cooperatives understand and implement the requirements of IEEE Std 1547-2018. It summarizes key changes, including ride-through requirements, reactive power capabilities, and communi...
Ropp, M. National Rural Electric Cooperative Association
Feb 28, 2019
Revision of IEEE Standard 1547: New Disturbance Response Requirements
This resource summarizes the new disturbance-response requirements in the revised IEEE Std 1547, covering ride through capabilities, frequency and voltage excursion tolerances, and dynamic response expectations for distributed energy resources. It likely discusses how DER must res...
Walling, R. Walling Energy Systems Consulting, LLC
Jan 31, 2017
Tribal Energy: Federal Assistance to Support Microgrid Development
This Government Accountability Office report reviews federal assistance available to tribes seeking to deploy microgrids and other distributed energy resources. It identifies funding and technical support programs administered by agencies such as the Department of Energy, Departme...
U.S. Government Accountability Office
Jul 21, 2024
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
A Solar Hosting Capacity Analysis on a Synthetic Rural Alaska Microgrid Model
The report discusses procedures used to conduct a hosting capacity analysis (HCA) on a synthetic Alaskan microgrid model. This includes the test case used, assumptions in the analysis, and the several algorithms implemented. The maximum distribution transformer and line loading o...
Francisco, A. et al University of Alaska Fairbanks
Apr 24, 2025
Background Information on the Protection Requirements in IEEE Std 1547-2018
This resource offers explanatory background on the protection requirements outlined in IEEE Std 1547-2018, the standard governing interconnection of distributed energy resources (DER). It discusses the rationale behind protective device settings, fault detection, anti-islanding re...
Mahmud, R. and Ingram, M. NLR
Dec 31, 2021
Informative Background on the Interoperability Requirements in IEEE Std 1547-2018
This NREL report summarizes the interoperability requirements in the revised Institute of Electrical and Electronics Engineers Standard 1547-2018 (IEEE Std 1547-2018). Additionally, the report provides context and related background concepts for applying advanced interoperability ...
Ingram, M. et al NLR
Jun 30, 2021
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