Adaptive memory-based event-triggering resilient LFC for power system under DoS attack

Considering denial-of-service (DoS) attacks in the communication network, this work de-velops the adaptive memory-based event triggering resilient LFC approach for multi-area power systems with wind power. First of all, the impact of each DoS attack is evaluated by the amount of continual information loss it causes. Meanwhile, an adaptive memory event triggering mechanism (AMETM) is proposed, where the dynamic event triggering parame-ter and the triggering mechanism are all related to the historical transmitted states. Then, based on the proposed AMETM and DoS attacks, a sampling-data LFC model is established. In order to construct the LFC scheme with the desired faster state response, the expo-nential decay index is introduced as a performance index. Next the exponential stability problem of LFC sampling model is transformed into the asymptotic stability problem of polynomial uncertain system. Secondly, the exponential stability criterion and the memory controllers design method are obtained by bilateral closed-loop Lyapunov-Krasovskii func-tional (LKF) and LMI technology, which ensure the proposed memory control scheme can quickly stabilize the LFC system under a longer DoS attack. Lastly, a one-area typical LFC system is presented to verify the superiority and effectiveness of the proposed AMETM. The resilient control with fast state response and DoS attack is studied by two-areas LFC systems with wind power. (c) 2023 Elsevier Inc. All rights reserved.

Automated summary

This paper develops an adaptive memory-based event triggering resilient LFC approach for multi-area power systems with wind power, considering denial-of-service (DoS) attacks in the communication network. The impact of each DoS attack is evaluated by the amount of continual information loss it causes, and an adaptive memory event triggering mechanism (AMETM) is proposed. A sampling-data LFC model is established based on the proposed AMETM and DoS attacks. The exponential stability criterion and the memory controllers design method are obtained to ensure the proposed memory control scheme can quickly stabilize the LFC system under a longer DoS attack.