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Revision of IEEE Std 1547: Additional Topics
This TechSurveillance article is the last in a series of four articles that describe the changes proposed for IEEE 1547, provide the rationale for these changes, and describe how they will affect the planning, design, protection, and operation of rural electric cooperative distri...
Walling, R. Walling Energy Systems Consulting, LLC
Mar 31, 2017
The Advanced Microgrid: Integration and Interoperability
Produced by Sandia National Laboratories, this paper examines the concept of the advanced microgrid and the need for integration and interoperability across hardware, software, and communications interfaces. It discusses the evolution from traditional islanded microgrids to system...
Bower, W. et al Sandia National Laboratories
Feb 28, 2014
Quantitative Trade-Off in Distributed Secondary Control for Autonomous AC Microgrids
In this paper, we propose to quantify the trade-off between voltage regulation and reactive power sharing in autonomous AC microgrids with distributed secondary control. It is known that voltage regulation and reactive power sharing in droop-controlled autonomous AC microgrids are...
Liu, Z. et al Purdue University
Dec 31, 2024
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
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
Using Energy Storage-Based Grid Forming Inverters for Operational Reserve in Hybrid Diesel Microgrids
Studies transient dynamics in a hybrid diesel microgrid during loss of wind generation and evaluates a transition from diesel spinning reserve to a battery energy storage system operating reserve using grid-forming inverters. Combines electromagnetic simulations with a power hardw...
Hernandez-Alvidrez, J. et al Sandia National Laboratories
Mar 26, 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
Evaluation of MVDC Electrical Interties Connecting Remote Communities: an Alaska Case Study
This Alaska Center for Energy and Power report presents a techno-economic case study of interconnecting two remote, islanded power systems via a 25-mile electrical intertie. Using HOMER Pro models (including scenarios with energy storage), the analysis compares AC and DC intertie ...
Chamberlin, M. et al University of Alaska Fairbanks
Aug 21, 2023
Cybersecurity Certification Standard for Distributed Energy and Inverter-Based Resources
NREL and UL co-presented on their joint effort to develop a cybersecurity certification standard for distributed energy resources (DERs) at a meeting of the Cybersecurity Advisory Team for State Solar (CATSS). The advisory team is hosted by NASEO and NARUC. The presentation outlin...
Saleem, D. and Slowinske, M. NLR
Jan 23, 2022
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
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