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2012 | OriginalPaper | Buchkapitel

Coherent Swing Instability of Interconnected Power Grids and a Mechanism of Cascading Failure

verfasst von : Yoshihiko Susuki, Igor Mezić, Takashi Hikihara

Erschienen in: Control and Optimization Methods for Electric Smart Grids

Verlag: Springer New York

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Abstract

We describe a dynamical mechanism of cascading failure in a system of interconnected power grids. This mechanism is based on the discovery of (SusukiY et al. (2011) J Nonlinear Sci 21(3):403–439), an emergent and undesirable phenomenon of synchronous machines in a power grid, termed the Coherent Swing Instability (CSI). In this phenomenon, most of the machines in a sub-grid coherently lose synchronism with the rest of the grid after being subjected to a local and finite disturbance. By numerical analysis of a system of weakly interconnected power grids, we present a phenomenon of coupled swing dynamics in which the CSI happens for all of the power grids in a successive manner. We suggest that a small disturbance in one grid can grow, spill to the other grids, and cause the whole system to fail. This mechanism enables the development of dynamically relevant tools for monitoring and control of wide-area disturbances, which become feasible when the physical power network is overlaid with an information network, like the smart grid.

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Vorheriges Kapitel Multi-Dimensional Modal Analysis in Large Power Systems from Ambient Data Based on Frequency-Domain Optimization

Nächstes Kapitel Toward a Highly Available Modern Grid

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Titel: Coherent Swing Instability of Interconnected Power Grids and a Mechanism of Cascading Failure
verfasst von: Yoshihiko Susuki
Igor Mezić
Takashi Hikihara
Verlag: Springer New York
Buch: Control and Optimization Methods for Electric Smart Grids
Print ISBN: 978-1-4614-1604-3

Electronic ISBN: 978-1-4614-1605-0

Copyright-Jahr: 2012
DOI: https://doi.org/10.1007/978-1-4614-1605-0_9