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Communication Dans Un Congrès Année : 2023

Impact of cyberattacks targeting distributed photovoltaic inverters

Résumé

Smart grid technologies increase the power grid vulnerability to cyberattacks. This study analyses the impact on voltage profiles of cyberattacks against photovoltaic (PV) inverters. Their capability to support the grid through ancillary services enlarges their attack surface. In particular, their reactive power capability is considered here in order to evaluate whether the related cybersecurity threats constitute a risk of voltage collapse. The study case network represents the distribution of a small city. The voltage regulation consists of an On-Load Tap Changer (OLTC) and the reactive power control of distributed inverters. Under cyberattack, the inverters start absorbing reactive power in undervoltage conditions. The minimum voltage of the network and the equipment loading are the metrics of the analysis. A domino effect on the attack activation is observed. The cyberattacks degrade the network voltage, but the voltage stability in terms of collapse is not endangered, thanks to the support of the OLTC.
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Dates et versions

cea-04630699 , version 1 (01-07-2024)

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Marta Gomis Domènech, Yassine Naimi, Xavier Le Pivert. Impact of cyberattacks targeting distributed photovoltaic inverters. ISGT EUROPE - 2023 IEEE PES Innovative Smart Grid Technologies Europe, Oct 2023, Grenoble, France. ⟨10.1109/ISGTEUROPE56780.2023.10408681⟩. ⟨cea-04630699⟩

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