A Proactive Intrusion Detection and Mitigation System for Grid-Connected Photovoltaic Inverters

The breach of data confidentiality, integrity, and availability due to cyberattacks can adversely impact the operation of grid-connected Photovoltaic (PV) inverters. Detecting such attacks based on their signatures or behavior-based analytics and adopting corrective actions to prevent security breaches for grid-connected PV systems requires the implementation of an intelligent Intrusion Detection System (IDS). In this paper, a Proactive Intrusion Detection and Mitigation System (PIDMS) based on real-time stability boundary identification at the Point of Common Coupling (PCC) for grid-connected PV systems is presented to identify the potentially compromised grid-connected PV systems in Cyber-Physical Power and Energy Systems (CPPES). The proposed PIDMS correlates the variations in the active power and reactive power measurements to power grids voltage at the PCC in real-time and accurately identifies compromised grid-connected PV systems, and enhances the resilience of CPPES. The performance of the proposed PIDMS is validated through dynamic simulations under different operating conditions. The obtained results verify the applicability and effectiveness of the proposed PIDMS.