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Fast Frequency Response Concepts and Bulk Power System Reliability Needs
The whitepaper, Fast Frequency Response Concepts and Bulk Power System Reliability Needs, discusses factors determining rate of change of frequency, fast frequency response concepts, and critical inertia. This whitepaper was published in March 2020 by the Inverter-Based Resources ...
National American Electric Reliability Corporation
Dec 31, 2019
Prevention of Unintentional Islands in Power Systems with Distributed Resources
This resource examines the phenomenon of unintentional islanding when a portion of the grid continues to be energized by distributed energy resources during a larger outage. It describes potential risks to safety and equipment, reviews existing standards and detection methods, and...
Kroposki, B. NLR
Aug 23, 2016
Generic Microgrid Controller Specifications
Developed by the Advanced Power and Energy Program for the U.S. Department of Energy, this document provides generic specifications for microgrid controllers. It delineates required and optional functions across four modes of operation: grid-connected, islanded, transition, and su...
Razeghi, G. et al U.S. Department of Energy
Sep 30, 2016
A Primer on the Unintentional Islanding Protection Requirement in IEEE Std 1547-2018
This primer provides an accessible explanation of the unintentional islanding protection provisions in IEEE Std 1547-2018. It describes why preventing unintentional islanding is critical, outlines testing and detection methods, and clarifies performance requirements for distribute...
Narang, D. et al NLR
Mar 31, 2022
Design of a Microgrid Transition Controller II: System Recovery Under Abnormal Conditions
This paper presents a microgrid transition controller for managing emergency operation when the microgrid experiences a system blackout caused by an internal or external fault. The developed transition controller consists of various application function blocks, including normal op...
Wang, J. et al NLR
Dec 31, 2017
Revision of IEEE Standard 1547: The Background for Change
This article is the first in a four-part series regarding the IEEE standard 1547 and its impact on the electric grid. The background and purpose of this standard is discussed here, and subsequent articles will focus on related issues of voltage regulation, disturbance performance,...
Walling, R. Walling Energy Systems Consulting, LLC
Oct 31, 2016
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
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
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
Fuel Cell Inverter Transition Between Modes of Operation (Grid-Forming and Grid-Following)
This NREL dataset provides data and documentation from experiments investigating how a fuel cell inverter transitions between grid-forming and grid-following modes of operation. The dataset includes time-series measurements of voltages, currents, and control signals during mode tr...
Nemsow, N. et al NLR
Dec 26, 2024
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