Resilient Event-Triggered Control for LFC-VSG Scheme of Uncertain Discrete-Time Power System under DoS Attacks

This paper is concerned with resilient triggered control problem for load frequency control and virtual synchronous generation (LFC-VSG) scheme of discrete-time multi-area power system with parameter uncertainty, governor dead band (GDB), and low inertia under time delay and aperiodic Denial-of-Service (DoS) attacks. To reduce communication load of sleep intervals, event triggered mechanism (ETM) is introduced. A discrete-time switched delay system model is established to describe the dynamic of multi-area power system under resilient static output feedback control law. Combining piecewise Lyapunov–Krasovskii functional (LKF) method with switched system theory, a criterion is derived that the tolerant bound of attack duration and attack frequency can be estimated explicitly. Meanwhile, some sufficient conditions are obtained which can preserve weighted H ∞ performance. By using linear matrix inequalities (LMIs) techniques, a co-design method is proposed to solve the control gains and trigger parameters. A simulation example of a two-area power system was carried out to verify the efficiency of our proposed resilient event based LFC-VSG scheme.

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Event-triggered H∞ control for networked control systems under denial-of-service attacks

Transactions of the Institute of Measurement and Control ◽

10.1177/0142331220966417 ◽

2020 ◽

pp. 014233122096641

Author(s):

Liruo Zhang ◽

Sing Kiong Nguang ◽

Shen Yan

Keyword(s):

Control Systems ◽

Networked Control Systems ◽

Denial Of Service ◽

Sufficient Conditions ◽

Networked Control ◽

Linear Matrix ◽

Dos Attacks ◽

Network Resources ◽

Zigbee Protocol ◽

Event Triggered

This paper investigates the event-triggered H∞ control for networked control systems under the denial-of-service (DoS) attacks. First, a novel system model is established considering random, time-constraint DoS attacks. Second, an event-triggered scheme including an off-time is proposed to reduce the unnecessary occupation of network resources, with which a prescribed minimum inter-triggering time is guaranteed and Zeno problem is avoided. Third, sufficient conditions for the existence of an event-triggered controller which ensures the exponential stability of the closed-loop system with desired H∞ performance are formulated in linear matrix inequalities (LMIs). Finally, the effectiveness of the proposed method is examined by two illustrative examples, where a real communication network based on the ZigBee protocol is utilized.

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Adaptive event-triggered state estimation for complex networks with nonlinearities against hybrid attacks

AIMS Mathematics ◽

10.3934/math.2022158 ◽

2022 ◽

Vol 7 (2) ◽

pp. 2858-2877

Author(s):

Yahan Deng ◽

◽

Zhenhai Meng ◽

Hongqian Lu

Keyword(s):

Complex Networks ◽

State Estimation ◽

Denial Of Service ◽

Sufficient Conditions ◽

Cyber Attacks ◽

Linear Matrix ◽

System State ◽

Dos Attacks ◽

Augmented System ◽

Event Triggered

<abstract><p>This paper investigates the event-triggered state estimation problem for a class of complex networks (CNs) suffered by hybrid cyber-attacks. It is assumed that a wireless network exists between sensors and remote estimators, and that data packets may be modified or blocked by malicious attackers. Adaptive event-triggered scheme (AETS) is introduced to alleviate the network congestion problem. With the help of two sets of Bernoulli distribution variables (BDVs) and an arbitrary function related to the system state, a mathematical model of the hybrid cyber-attacks is developed to portray randomly occurring denial-of-service (DoS) attacks and deception attacks. CNs, AETS, hybrid cyber-attacks, and state estimators are then incorporated into a unified architecture. The system state is cascaded with state errors as an augmented system. Furthermore, based on Lyapunov stability theory and linear matrix inequalities (LMIs), sufficient conditions to ensure the asymptotic stability of the augmented system are derived, and the corresponding state estimator is designed. Finally, the effectiveness of the theoretical method is demonstrated by numerical examples and simulations.</p></abstract>

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Resilient Event-triggered Load Frequency Control for Multi-area Power System with Wind Power Integrated Considering Packet Losses

IEEE Access ◽

10.1109/access.2021.3083609 ◽

2021 ◽

pp. 1-1

Author(s):

Chao Yang ◽

Wei Yao ◽

Ying Wang ◽

Xiaomeng Ai

Keyword(s):

Power System ◽

Wind Power ◽

Frequency Control ◽

Load Frequency Control ◽

Packet Losses ◽

Load Frequency ◽

Event Triggered

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Handshake Logic-based Event-triggered Load Frequency Control for Smart Grids under DoS Attacks

IEEE Transactions on Industrial Informatics ◽

10.1109/tii.2021.3116165 ◽

2021 ◽

pp. 1-1

Author(s):

Md Musabbir Hossain ◽

Chen Peng ◽

Yu-Long Wang ◽

Xin Du

Keyword(s):

Smart Grids ◽

Frequency Control ◽

Load Frequency Control ◽

Dos Attacks ◽

Load Frequency ◽

Event Triggered

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Robust LFC Strategy for Wind Integrated Time-Delay Power System Using EID Compensation

Energies ◽

10.3390/en12173223 ◽

2019 ◽

Vol 12 (17) ◽

pp. 3223 ◽

Cited By ~ 4

Author(s):

Liu ◽

Zhang ◽

Zou

Keyword(s):

Time Delay ◽

Power System ◽

Closed Loop ◽

Frequency Control ◽

Loop System ◽

Load Frequency Control ◽

System Stability ◽

Linear Matrix ◽

Closed Loop System ◽

The Stability

This paper presents an active disturbance rejection control (ADRC) technique for load frequency control of a wind integrated power system when communication delays are considered. To improve the stability of frequency control, equivalent input disturbances (EID) compensation is used to eliminate the influence of the load variation. In wind integrated power systems, two area controllers are designed to guarantee the stability of the overall closed-loop system. First, a simplified frequency response model of the wind integrated time-delay power system was established. Then the state-space model of the closed-loop system was built by employing state observers. The system stability conditions and controller parameters can be solved by some linear matrix inequalities (LMIs) forms. Finally, the case studies were tested using MATLAB/SIMULINK software and the simulation results show its robustness and effectiveness to maintain power-system stability.

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Distributed Event-Triggered Consensus Control of Multi-Agent Systems under Denial-of-Service Jamming Attacks

10.21203/rs.3.rs-1002028/v1 ◽

2021 ◽

Author(s):

Mingyue Xiong ◽

Xin Wang ◽

Jun Cheng

Keyword(s):

Denial Of Service ◽

Sufficient Conditions ◽

Consensus Problem ◽

Multi Agent Systems ◽

Dos Attacks ◽

Topological Graph ◽

Jamming Attacks ◽

Agent Systems ◽

Multi Agent ◽

Event Triggered

Abstract This work focuses on the consensus problem of multi-agent systems (MASs) under event-triggered control (ETC) subject to denial-of-service (DoS) jamming attacks. To reduce the cost of communication networks, a novel event-triggering mechanism (ETM) is applied to the sleeping interval to determine whether the sampled signal should be transmitted or not. Unlike periodic DoS attacks model, the DoS attacks occurrence are irregular, where attack attributes such as attack frequency and attack duration are taken into account. Moreover, compared with the fixed topological graph, the communication topologies may change due to DoS jamming attacks in this work. In view of this, based on the piecewise Lyapunov functional, sufficient conditions are derived to guarantee that consensus problem of the MASs can be solved. Finally, the effectiveness and correctness of the theoretical results are verified by a numerical example.

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