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Quantitative Small-Signal Stability Analysis of Grid-Forming Inverters in Large-Scale Power Systems
In this paper, the challenges induced by the integration of inverter-based resources (IBRs) into existing power systems are discussed. Although the grid-forming (GFM) control has been used to enhance system performance in multiple sections of electric power systems (e.g., transmis...
Ding, L. et al Purdue University
Dec 31, 2022
An Overview of Issues Related to IEEE Std 1547-2018 Requirements Regarding Voltage and Reactive Power Control
This overview discusses the voltage and reactive power control provisions of IEEE Std 1547-2018 and highlights implementation challenges for distributed energy resource interconnections. It covers topics such as voltvar control curves, ride through capabilities, coordination with ...
Narang, D. et al NLR
Aug 31, 2021
Design Power Control Strategies of Grid-Forming Inverters for Microgrid Application
This paper develops and compares two control schemes in the application control layer of a non-phase-locked loop (non-PLL) grid-forming (GFM) inverter to gain insight and understanding into how the two schemes affect the dynamic responses of GFM inverters and the transition operat...
Wang, J. NLR
Dec 31, 2020
Use of Grid-Forming Medium-Voltage Power Electronics Hub in a Microgrid Setting
This paper presents the application of a new design of a multiport, modular, medium-voltage power electronics hub (M3PE-HUB) in a microgrid setting. The M3PE-HUB system was modeled in a digital real-time simulator (DRTS) and integrated into the Banshee microgrid test system. This ...
Xie, F. et al NLR
Dec 31, 2022
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
Impact of IEEE 1547 Standard on Smart Inverters and the Applications in Power Systems
This white paper presents smart inverter features along with the implementation challenges and potential solutions. The paper describes smart inverter functionality and discusses their modeling, capabilities, testing, and certification. Originally published by a "fast track" worki...
Bravo, R. et al California Institute of Technology
Jul 31, 2020
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
Creation of a Synthetic Rural Alaskan Microgrid Model
Describes the development of a synthetic benchmark power-system model representing a rural Alaskan island microgrid while avoiding disclosure of confidential critical-infrastructure data. Summarizes the methodology used to create the synthetic grid and evaluates performance throug...
Francisco, A. University of Alaska Fairbanks
Sep 03, 2025
A Novel Power-Hardware-in-the-Loop Interface Method for Grid-Forming Inverter Systems
Power-hardware-in-the-loop (PHIL) simulations of grid-forming (GFM) inverter systems facilitate the testing of drastic scenarios, such as on-grid to off-grid transitions and islanded microgrid operations without a stiff grid. To the authors' best knowledge, most studies in the lit...
Chakraborty, S. et al University of Minnesota
Dec 31, 2021
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