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Development of a Practical Secondary Control for Hardware Microgrids
Practical, vendor-agnostic interoperability guidelines for the secondary control architecture of microgrids (MGs) with multiple grid-forming (GFM) inverter-based resources (IBRs) have not yet been developed. Therefore, this paper proposes a generic and vendor-agnostic secondary co...
Chakraborty, S. et al NLR
Dec 31, 2024
Study of Inverter Control Strategies on the Stability of Microgrids Toward 100% Renewable Penetration: Preprint
This paper investigates microgrid transient stability with mixed generation synchronous generator (SG), grid-forming (GFM) and grid-following (GFL) inverters under increasing penetration levels toward a 100% renewable generation microgrid. Specifically, the dynamics of a microgrid...
Wang, J. NLR
Jul 31, 2022
A Data-Driven Passive Islanding Detection Scheme
This paper proposes a novel statistical parameters based data driven approach for passive islanding detection. The proposed scheme relies in the voltage data, measured at the point of common coupling, and is comprised of three stages. The Stage-1 quickly detects what is termed as ...
Reddy, M. et al NLR
Dec 31, 2022
Dynamic Shaping of Grid Response of Multi-Machine Multi-Inverter Systems Through Grid-Forming IBRs: Preprint
We consider the problem of controlling the frequency response of weakly-coupled multi-machine multi-inverter low-inertia power systems via grid-forming inverter-based resources (IBRs). In contrast to existing methods, our approach relies on dividing the larger system into multiple...
Poolla, B. et al NLR
Jun 30, 2024
Improved Control Strategy of Grid-Forming Inverters for Fault Ride-Through in a Microgrid System
This paper develops an improved control strategy of grid-forming (GFM) inverters with fault ride-through capabilities to guarantee the stable operation of microgrids under fault conditions, especially islanded microgrids and asymmetrical faults. The proposed control strategy inclu...
Wang, J. NLR
Dec 31, 2021
Decentralized Microgrid Protection Through Relative Fault Direction Classification: Preprint
Protection in inverter-based resources (IBRs) dominated microgrids generally face significant challenges due to the low fault current and inconsistent fault behaviors from IBRs. Recently, machine learning-based approaches have attracted considerable attention to address these chal...
Chen, Y. et al NLR
Aug 31, 2024
Operation of Grid Forming Converters as Self Excited Induction Generators Under Non-Ideal Loading Conditions
Self-excited induction generators offer a robust solution for power production for standalone as well as grid-connected systems. In general, self-excited induction generators require excitation capacitors which make use of the machine magnetization characteristics for voltage buil...
Roy Chowdhury, V. and Mather, B. NLR
Dec 31, 2023
Flexible Operation of Microgrids Through Operator-Configurable Microgrid Controllers
Microgrids are becoming critical assets in power distribution systems. This is partly due to the resiliency and reliability challenges faced by power distribution systems in the last decade and partly due to the increased integration of distributed energy resource assets, such as ...
Curtiss, P. et al SandC Electric Company
Dec 31, 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
ESIC Energy Storage Commissioning Guide
This report updates the previously published Energy Storage Integration Council (ESIC) Energy Storage Commissioning Guide 2018. In order to align with the rapidly changing energy storage technology space, these guidelines were refined to address how commissioning can be most effic...
Electric Power Research Institute
Dec 31, 2022
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