Voltage Control in Distributed Generation under Measurement Falsification Attacks
Mingxiao Ma (TU Delft - Intelligent Electrical Power Grids)
André Herdeiro Teixeira (Information and Communication Technology)
Jan van den Berg (TU Delft - Cyber Security, TU Delft - Cyber Security)
Peter Palensky (TU Delft - Intelligent Electrical Power Grids)
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Abstract
Low-voltage distribution grids experience a rising penetration of inverter-based, distributed generation. In order to not only contribute to but also solve voltage problems, these inverters are increasingly asked to participate in intelligent grid controls. Communicating inverters implement distributed voltage droop controls. The impact of cyber-attacks to the stability of such distributed grid controls is poorly researched and therefore addressed in this article. We characterize the potential impact of several attack scenarios by employing the positivity and diagonal dominance properties. In particular, we discuss measurement falsification scenarios where the attacker corrupts voltage measurement data received by the voltage droop controllers. Analytical, control-theoretic methods for assessing the impact on system stability and voltage magnitude are presented and validated via simulation.
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