Universität zu Köln

Rohden, Martin, Witthaut, Dirk ORCID: 0000-0002-3623-5341, Timme, Marc ORCID: 0000-0002-5956-3137 and Meyer-Ortmanns, Hildegard ORCID: 0000-0001-9882-6529 (2017). Curing critical links in oscillator networks as power flow models. New J. Phys., 19. BRISTOL: IOP PUBLISHING LTD. ISSN 1367-2630

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Abstract

Modern societies crucially depend on the robust supply with electric energy so that blackouts of power grids can have far reaching consequences. Typically, large scale blackouts take place after a cascade of failures: the failure of a single infrastructure component, such as a critical transmission line, results in several subsequent failures that spread across large parts of the network. Improving the robustness of a network to prevent such secondary failures is thus key for assuring a reliable power supply. In this article we analyze the nonlocal rerouting of power flows after transmission line failures for a simplified ACpower grid model and compare different strategies to improve network robustness. Weidentify critical links in the grid and compute alternative pathways to quantify the grid's redundant capacity and to find bottlenecks along the pathways. Different strategies are developed and tested to increase transmission capacities to restore stability with respect to transmission line failures. Weshow that local and nonlocal strategies typically perform alike: one can equally well cure critical links by providing backup capacities locally or by extending the capacities of bottleneck links at remote locations.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Rohden, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED Witthaut, Dirk UNSPECIFIED orcid.org/0000-0002-3623-5341 UNSPECIFIED Timme, Marc UNSPECIFIED orcid.org/0000-0002-5956-3137 UNSPECIFIED Meyer-Ortmanns, Hildegard UNSPECIFIED orcid.org/0000-0001-9882-6529 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-242708
DOI:	10.1088/1367-2630/aa5597
Journal or Publication Title:	New J. Phys.
Volume:	19
Date:	2017
Publisher:	IOP PUBLISHING LTD
Place of Publication:	BRISTOL
ISSN:	1367-2630
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SUPPLY NETWORKS; SYNCHRONIZATION; STABILITY; FAILURES Multiple languages Physics, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/24270