Active disturbance rejection control for load frequency control systems under uncertainty and resonance attacks
Year: 2025
Type: article
Abstract: The pervasive presence of hackers has seriously constrained the development of national cyber security. The necessity of addressing the issue of counteracting cyber-attacks is of paramount importance to the power grid system. In this study, we propose a novel attack compensation structure, namely the linear active disturbance rejection (LADRC) controller with a compensation loop. This enhances the existing second-order LADRC structure through incorporating a compensation loop that multiplies the difference between the output of the linear extended state observer (LESO) and the frequency deviation factor multiplied with RoCoF with a compensation factor controlled by a specific control law. The compensating attack loop drawing inspiration from LESO, possesses robust real-time online observation and estimation capabilities; effectively estimating and compensating for disturbances to stabilize system frequency within acceptable limits. The compensation loop employs three model-based resonance strategies to counteract disturbances, with detailed theoretical derivations and simulations conducted to determine the compensation factors. Simulation testing has been expanded to include two and three-area systems to validate the proposed approach. In addition, a comparison is made between the proposed compensation structure and the existing control scheme. The simulation results demonstrate that the proposed attack compensation scheme exhibits superior anti-attack capabilities while maintaining flexibility against resonance attacks.
Authors: Xingqi Hu, Wen Tan, Guolian Hou
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,920
OpenAlex ID: W4410880835