NDLI: Time scale stability analysis of a Hopf bifurcation in a wind

Content Provider	IET Digital Library
Author	Pillco, Edwin Choque Alberto, Luís Fernando Costa Oliveira, Ricardo Vasques de
Abstract	Microgrids and modern bulk power systems usually have multiple time scale dynamics, such as slow and fast dynamics. In this study, the stability of a wind–diesel hybrid microgrid is investigated to show a mechanism of system collapse caused by the interaction between fast dynamics of interface converters and slow electromechanical dynamics. This mechanism leads to a Hopf bifurcation of the fast subsystem due to slow changes in the variables of the slow subsystem and is completely understood by decomposing the stability analysis of the microgrid into the stability assessment of two simpler subsystems: the slow and the fast subsystems. The time-scale method proposed in this study for stability analysis of the microgrid extends the existing proposals in the literature and is able to detect this kind of instability scenario, where the interaction between fast and slow subsystems is the cause of collapse, while the existing approaches, such as quasi-steady-state analysis, fail in detecting instability.
Starting Page	1491
Ending Page	1501
Page Count	11
ISSN	17521416
Volume Number	14
e-ISSN	17521424
Issue Number	Issue 9, Jul (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/14/9
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2019.1193
Journal	IET Renewable Power Generation
Publisher Date	2020-03-10
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Bifurcation Control of Electric Power System Diesel-electric Power Stations Distributed Power Generation Fast Subsystem Hopf Bifurcation Hybrid Power System Modern Bulk Power System Multiple Time Scale Dynamics Power Grid Power System Control Quasisteady-state Analysis Simpler SubSystem Slow Electromechanical Dynamics Slow Subsystem Stability Stability Assessment System Collapse Time Scale Stability Analysis Time-scale Method Wind–diesel Hybrid Microgrid
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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