Paper Info
Title
Preventing Outages Under Coordinated Cyber–Physical Attack With Secured PMUs
Abstract
Due to the potentially severe consequences of coordinated cyber-physical attacks (CCPA), the design of defenses has gained significant attention. A popular approach is to eliminate the existence of attacks by either securing existing sensors or deploying secured PMUs. In this work, we improve this approach by lowering the defense target from <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">eliminating attacks</i> to <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">preventing outages</i> and reducing the required number of PMUs. To this end, we formulate the problem of <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">PMU Placement for Outage Prevention (PPOP)</i> under DC power flow model as a tri-level non-linear optimization problem and transform it into a bi-level mixed-integer linear programming (MILP) problem. Then, we propose an alternating optimization framework to solve PPOP by iteratively adding constraints, for which we develop two constraint generation algorithms. In addition, for large-scale grids, we propose a polynomial-time heuristic algorithm to obtain suboptimal solutions. Next, we extend our solution to achieve the defense goal under AC power flow model. Finally, we evaluate our algorithm on IEEE 30-bus, 57-bus, 118-bus, and 300-bus systems, which demonstrates the potential of the proposed approach in greatly reducing the required number of PMUs.
Year
DOI
Venue
2022
10.1109/TSG.2022.3165768
IEEE Transactions on Smart Grid
Keywords
DocType
Volume
Power system security,phasor measurement units,power system protection,cyberattack
Journal
13
Issue
ISSN
Citations 
4
1949-3053
0
PageRank 
References 
Authors
0.34
20
4
Name
Order
Citations
PageRank
Yudi Huang100.68
Ting He271644.82
Nilanjan Ray Chaudhuri300.68
Thomas La Porta480191.33