Risk-based method to secure power systems against cyber-physical faults with cascading impacts: a system protection scheme application

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Title: Risk-based method to secure power systems against cyber-physical faults with cascading impacts: a system protection scheme application
Authors: Calvo, JL
Tindemans, SH
Strbac, G
Item Type: Journal Article
Abstract: The utilization levels of the transmission network can be enhanced by the use of automated protection schemes that rapidly respond to disturbances. However, such corrective systems may suffer from malfunctions that have the potential to exacerbate the impact of the disturbance. This paper addresses the challenge of jointly optimizing the dispatch of generators and protection settings in this context. This requires a holistic assessment of the cyber (protection logic) and physical (network) systems, considering the failures in each part and their interplay. Special protection schemes are used as a prototypical example of such a system. An iterative optimization method is proposed that relies on power system response simulations in order to perform detailed impact assessments and compare candidate solutions. The candidate solutions are generated on the basis of a security-constrained dispatch that also secures the system against a set of cyber failure modes. A case study is developed for a generation rejection scheme on the IEEE reliability test system (RTS): candidate solutions are produced based on a mixed integer linear programming optimisation model, and loss-of-load costs are computed using a basic cascading outage algorithm. It is shown that the partial security approach is able to identify solutions that provide a good balance of operational costs and loss-of-load risks, both in a fixed dispatch and variable dispatch context.
Issue Date: 1-Sep-2018
Date of Acceptance: 31-Jul-2018
URI: http://hdl.handle.net/10044/1/65378
DOI: https://dx.doi.org/10.1007/s40565-018-0447-8
ISSN: 2196-5420
Publisher: SpringerOpen
Start Page: 930
End Page: 943
Journal / Book Title: Journal of Modern Power Systems and Clean Energy
Volume: 6
Issue: 5
Copyright Statement: © 2018 The Author(s). This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Sponsor/Funder: Engineering & Physical Science Research Council (E
Funder's Grant Number: R96051 - EP/K036173/1
Keywords: Science & Technology
Engineering, Electrical & Electronic
Power system operations
Cyber-physical systems
System protection schemes
Risk-aware dispatch
Publication Status: Published
Online Publication Date: 2018-09-12
Appears in Collections:Faculty of Engineering
Electrical and Electronic Engineering
Centre for Environmental Policy
Faculty of Natural Sciences

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