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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
Clean Energy Microgrids: Considerations for State Energy Offices and Public Utility Commissions to Increase Resilience, Reduce Emissions, and Improve Affordability
This FEMP guide outlines techniques to mitigate hail damage to solar PV installations. It covers risk assessment, module selection with hail-resistant ratings, array tilt considerations, mounting structures, protective covers, and insurance considerations. The resource aims to hel...
National Association of Regulatory Utility Commissioners and National Association of State Energy Officials
Apr 30, 2023
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
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
Implementing Inertial Control for PMSG-WTG in Region 2 using Virtual Synchronous Generator with Multiple Virtual Rotating Masses
With the increasing integration of renewable energy, the problems associated with deteriorating grid frequency profile and potential power system instability have become more significant. In this paper, the inertial control algorithm using Virtual Synchronous Generator (VSG) is im...
Yan, W. et al University of Denver
Jul 31, 2019
Learning-Based Building Flexibility Estimation and Control to Improve Microgrid Economics and Resilience: Preprint
This paper proposes a learning-based building flexibility estimation and control framework to improve system economics and resilience. A data-driven building load flexibility model consisting of weather forecasting and estimating load consumption is proposed to quantify building h...
Ding, F. et al NLR
Jun 30, 2024
Synchronization of Lienard-Type Oscillators in Heterogenous Electrical Networks
Motivated by potential applications for power-electronic converters in microgrids, we study the problem of global asymptotic synchronization of Lienard-type nonlinear oscillators in heterogenous LTI electrical networks with series R-L circuits modeling interconnections. By heterog...
Johnson, B. et al University of Minnesota
Dec 31, 2017
Analysis of Microgrid Performance, Reliability, and Resilience (AMPeRRe) Computational Model: Novel Analytical Model to Forecast the Outcomes of Installation Power Grids
Federal facilities, industrial areas, academic campuses, and communities are working to incorporate greater renewable energy sources and energy storage in their power infrastructure. While renewable sources of energy can—and do—support several facilities, uncertainty still exi...
Bozada, T. et al
Nov 30, 2024
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
Inverter Controls for Smooth Transition Operation of Networked Microgrids
Islanding sections of a distribution grid as microgrids and networking these microgrids offer promising opportunities for improving system reliability; however, this approach may need distributed energy resources (DERs) to switch between grid-connected and islanded operation witho...
Sawant, J. et al NLR
Dec 31, 2022
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