Mitigation of Denial of Service and Time Delay Attacks on the Automatic Generation Control of Power Systems

In this work, the effect of Time Delay (TD) as well as Distributed Denial-of-Service (DDoS) attacks on the Automatic Generation Control (AGC) is investigated. For this purpose, a cyber-physical communication platform bridging a communication network simulator Graphical Network Simulator-3 (GNS3) and a power system simulator OPAL-RT is utilized. It is shown that TD and DDoS attacks have a significant effect on the frequency stability in the power system. To address this problem, three Multiprotocol Label Switching (MPLS) technologies are investigated to detect and mitigate DDoS and delays in the communication network. A 2-area AGC system is simulated and a comparative study on the utilized three MPLS technologies are provided to show their abilities in mitigating TD and DDoS attacks and their direct impact on the AGC operation.