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An integrated approach for failure mitigation & localization in power systems

Liang, Chen and Guo, Linqi and Zocca, Alessandro and Yu, Shuyue and Low, Steven H. and Wierman, Adam (2021) An integrated approach for failure mitigation & localization in power systems. Electric Power Systems Research, 190 . Art. No. 106613. ISSN 0378-7796.

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The transmission grid is often comprised of several control areas that are connected by multiple tie lines in a mesh structure for reliability. It is also well-known that line failures can propagate non-locally and redundancy can exacerbate cascading. In this paper, we propose an integrated approach to grid reliability that (i) judiciously switches off a small number of tie lines so that the control areas are connected in a tree structure; and (ii) leverages a unified frequency control paradigm to provide congestion management in real time. Even though the proposed topology reduces redundancy, the integration of tree structure at regional level and real-time congestion management can provide stronger guarantees on failure localization and mitigation. We illustrate our approach on the IEEE 39-bus network and evaluate its performance on the IEEE 118-bus, 179-bus, 200-bus and 240-bus networks with various network congestion conditions. Simulations show that, compared with the traditional approach, our approach not only prevents load shedding in more failure scenarios, but also incurs smaller amounts of load loss in scenarios where load shedding is inevitable. Moreover, generators under our approach adjust their operations more actively and efficiently in a local manner.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Zocca, Alessandro0000-0001-6585-4785
Low, Steven H.0000-0001-6476-3048
Additional Information:© 2020 Elsevier B.V. Received 5 October 2019, Revised 20 April 2020, Accepted 31 July 2020, Available online 8 August 2020. This work has been supported by Resnick Fellowship, Linde Institute Research Award, NWO Rubicon grant 680.50.1529, NSF through awards ECCS 1619352, CNS 1545096, CCF 1637598, ECCS 1739355, CNS 1518941, CPS 154471, ARPA-E through award DE-AR0000699 (NODES), and DTRA through award HDTRA 1-15-1-0003. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Group:Resnick Sustainability Institute
Funding AgencyGrant Number
Resnick Sustainability InstituteUNSPECIFIED
Linde Institute of Economic and Management ScienceUNSPECIFIED
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)680.50.1529
Advanced Research Projects Agency-Energy (ARPA-E)DE-AR0000699
Defense Threat Reduction Agency (DTRA)HDTRA 1-15-1-0003
Subject Keywords:Cascading failure; Failure mitigation; Frequency control; Power system reliability; Topology design
Record Number:CaltechAUTHORS:20200707-103725840
Persistent URL:
Official Citation:Chen Liang, Linqi Guo, Alessandro Zocca, Shuyue Yu, Steven H. Low, Adam Wierman, An integrated approach for failure mitigation & localization in power systems, Electric Power Systems Research, Volume 190, 2021, 106613, ISSN 0378-7796, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:104243
Deposited By: Tony Diaz
Deposited On:07 Jul 2020 17:47
Last Modified:14 Jan 2021 17:29

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