Multi-layer Cooperative Frequency Control of Microgrid with False Data Injection Attack and Communication Delay

Abstract

At present, distributed secondary frequency regulation based on multi-agent system (MAS) has become the most commonly used secondary frequency regulation method, but this method also brings network security risks. Therefore, this paper proposes a false data injection attack (FDIA) detection algorithm based on active power difference. Based on this algorithm, an attack elimination factor is added to the proposed consistency protocol to eliminate false data injection attacks. Considering that the communication delay will affect the convergence rate of MAS system, the consistency protocol is optimized. In addition, this paper optimizes a cooperative frequency regulation strategy, and distinguishes the strategies according to different scenarios. According to the order of action, the strategy is divided into two levels and three levels. Finally, a simulation model is built to test the defense algorithm and control strategy. The simulation results show the effectiveness and superiority of FDIA defense algorithm and frequency control strategy.