Random Number Generation Based DoS Attack-resilient Distributed Secondary Control Strategy

Abstract

With the increasing application of communication technologies, the distributed secondary control in the islanded microgrids (MGs) is in danger due to previously unheard-of denial-of-service (DoS) attacks. Current studies rarely delve into how DoS attacks affect frequency restoration and active power sharing and their defensive strategies. In this paper, we firstly design the principle of random number generation (RNG) to verify the correctness of the transmission data. Then, the implementation of the RNG-based DoS attack-resilient distributed control strategy is able to effectively detect and mitigate DoS attacks, meanwhile, improving the resilience of MGs. Eventually, an islanded MG test system is simulated by using the MATLAB/Simulink toolbox. The simulation results reveal that the proposed RNG-based DoS attack-resilient strategy is feasible and effective under normal and high-frequency DoS attacks.