Paper Info
Title
Cybersecurity Enhancement for Multi-Infeed High-Voltage DC Systems
Abstract
Composed of multiple two-terminal high-voltage DC (HVDC) transmission systems, a multi-infeed HVDC (MIDC) system exchanges massive power among multiple asynchronous AC systems. However, as an intrinsically cyber-physical system, an MIDC system could suffer from cyber-attacks, leading to massive power mismatches in multiple AC systems, and resulting in catastrophic consequences. Since the sequential responses of an MIDC system and interconnected AC systems are in different timescales, this paper first establishes a two-timescale model to evaluate the sequential impacts caused by cyber-attacks. Then, an event-triggered cyber-defense strategy is proposed to enhance the cybersecurity of an MIDC system by mitigating multiple non-simultaneous cyber-attacks. Whenever new cyber-attack events occur, the proposed cyber-defense strategy, which is mathematically modeled as a mixed-integer quadratic programming problem, is executed on-line and updated in an event-triggered manner. Simulation results on an MIDC system demonstrate that the low-cost and almost blind cyber-attacks can cause severe frequency deviations, and the proposed strategy can mitigate multi-cyber-attacks effectively.
Year
DOI
Venue
2022
10.1109/TSG.2022.3156796
IEEE Transactions on Smart Grid
Keywords
DocType
Volume
Cyber-attack,cyber-defense,cybersecurity enhancement,frequency deviation,high-voltage DC systems,multi-infeed DC systems
Journal
13
Issue
ISSN
Citations 
4
1949-3053
0
PageRank 
References 
Authors
0.34
19
5
Name
Order
Citations
PageRank
Jiazuo Hou100.34
Shunbo Lei200.34
Wenqian Yin300.34
Wei Sun463.26
Yunhe Hou511422.07