Abstract
With the involvement of cyber-infrastructure, the power grids are susceptible to cyber-attacks, whose consequences can be alarming, especially during attacks on control units. Due to utilizing several control units, the vulnerability of high-voltage direct current (HVDC) transmission systems to cyber-attacks can be severe. Hence, this paper aims to analyze the impacts of cyber-attacks on the well-known modular multilevel converter (MMC) HVDC transmission technology for a smart grid with countermeasures. The ramifications of the false data injection attacks on different control units of the control system of MMC–HVDC are evaluated individually, while introducing the system’s vulnerabilities from the control parameters’ perspective for voltage controller, current controller, and phase-locked loop. Both positively and negatively biased attacks are considered during investigating the impacts of the false data injection attacks on the controller parameters of the MMC–HVDC transmission system, which can be severe. Hence, a controlled switching unit is proposed as a countermeasure for developing an attack-resilient system. Based on the experimental results using MATLAB/Simulink, the proposed protective system ensures the stable operation of a two-terminal MMC–HVDC transmission system of a wind farm effectively during cyber-attacks. The proposed controlled switching unit-based countermeasure can serve as a guide for attack-resilient applications of MMC-based systems.
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Abbreviations
- CCSC:
-
Circulating current suppression controller
- CPS:
-
Cyber-physical system
- CSU:
-
Controlled switching unit
- DRES:
-
Distributed renewable energy sources
- FDI:
-
False data injection
- HBSM:
-
Half-bridge sub-module
- HVDC:
-
High-voltage direct current
- ICT:
-
Information and communication technologies
- MMC:
-
Modular multilevel converter
- NCS:
-
Networked control system
- PCC:
-
Point of common coupling
- PI:
-
Proportional–integral
- PID:
-
Proportional–integral–derivative
- PLL:
-
Phase-locked loop
- SM:
-
Sub-modules
- SRF-PLL:
-
Synchronous reference frame phase-locked loop
- WPGS:
-
Wind power generation station
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AD: Conceptualization, Research, Writing-Drafting and Editing. MAR: Conceptualization, Research, Writing-Drafting and Editing. MSR: Supervision,Review
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Devnath, A., Rahman, M.A. & Rana, M.S. Impact analysis of cyber-attack on MMC–HVDC control system with countermeasures. Int. J. Dynam. Control (2023). https://doi.org/10.1007/s40435-023-01313-3
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DOI: https://doi.org/10.1007/s40435-023-01313-3