Decentralized Robust Disturbance-Observer Based LFC of Interconnected Systems

Vafamand, Navid; Arefi, Mohammad Mehdi; Asemani, Mohammad Hassan; Dragičević, Tomislav

doi:10.1109/tie.2021.3078352

Cited by 23 publications

(8 citation statements)

References 38 publications

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“…Therefore, a unique design is crucial to preserve the relationship between generation and load fluctuations to maintain the resilience of the LFC. Some newly designed controllers have been demonstrated to be reliable for LFC schemes in multi-area and microgrid systems [77,78]. As an alternative to the conventional LFC approach, the authors in [61] used a self-tuning regulator to address the challenge of developing optimal LTI designs at various operating points.…”

Section: Similar Designed and Deployed Controllersmentioning

confidence: 99%

A Review of Load Frequency Control Schemes Deployed for Wind-Integrated Power Systems

et al. 2023

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Load frequency control (LFC) has recently gained importance due to the increasing integration of wind energy in contemporary power systems. Hence, several power system models, control techniques, and controllers have been developed to improve the efficiency, resilience, flexibility, and economic feasibility of LFC. Critical factors, such as energy systems, resources, optimization approaches, resilience, and transient stability have been studied to demonstrate the uniqueness of the proposed design. This paper examines the most recent advances in LFC techniques for wind-based power systems. Moreover, the use of classical, artificial intelligence, model predictive control, sliding mode control, cascade controllers, and other newly designed and adopted controllers in the LFC area is thoroughly examined. Statistical analysis and a comparison table are used to evaluate the advantages, disadvantages, and applications of various controllers. Finally, this paper presents a comprehensive overview of contemporary and other widely used soft computing tools for the LFC issue. This detailed literature review will assist researchers in overcoming the gap between current progress, application, limitations, and future developments of wind energy in LFC.

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Section: Similar Designed and Deployed Controllersmentioning

confidence: 99%

A Review of Load Frequency Control Schemes Deployed for Wind-Integrated Power Systems

et al. 2023

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“…This introduces complications in the construction of control strategies, besides the evolution dynamics serving as the dynamical constraints. Meanwhile, power systems operate in the presence of disturbances [6]. Disturbances caused by the load variation from their forecasted value have been considered in [7].…”

Section: Introductionmentioning

confidence: 99%

A Bi-Level Differential Game-Based Load Frequency Control With Cyber-Physical Security

Ghosh,

Konstantinou

2024

IEEE Trans. Smart Grid

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Load frequency control (LFC) is used in power systems to prevent frequency fluctuations caused by load disturbances and maintain power supply reliability. LFC utilizes communication channels to generate control signals, thus it is potentially vulnerable to cyber-attacks and faults. This work considers a cyber-physical model for LFC in which the adversary compromises the resources of the cyber layer to inject a stealthy false data injection attack (FDIA) vector. The FDIA injects the best-effort stealthy error into the data collected by the LFC, corrupting the control center's calculations and leading to incorrect control signals. To effectively manage this complex decision-making scenario, a game theory-based framework is established to analyze the interaction between the controller and the attacker. Based on the model, an FDIA defense mechanism based on a bi-level differential game is proposed. The experiments conducted on a three-region interconnected power system based on the IEEE 39-bus system demonstrate that the proposed strategy can effectively maintain the stability of the frequency and inter-regional power deviation within acceptable limits, even in the presence of FDIAs.

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“…However, most of the reported achievements have only addressed state observation or disturbance estimation. For example, in Vafamand et al [15], the switched interconnected system with limited measured states was investigated, to design the controller, a state estimator was designed first; however, in this work, the disturbance was not considered. In Cao et al [16], a class of interconnected multi‐agent nonlinear systems with time delay was addressed, by applying the radial basis function neural networks (NNs) technology, a state observer was constructed to estimate the states and weight matrices, and an event‐based control scheme was constructed by utilizing the estimation values.…”

Section: Introductionmentioning

confidence: 99%

Distributed observer design for interconnected nonlinear systems with faults and disturbances based on dynamic event conditions

Guo

Dian

Zhao

et al. 2023

Asian Journal of Control

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This study investigated the observer design schemes for interconnected nonlinear systems with actuator faults, sensor faults, external disturbances, and limited measured resources. A novel effective distributed estimation scheme is presented for the interconnected nonlinear system to estimate the states, faults, and lumped disturbances, simultaneously. To save communication resources and to improve information utilization, an adaptive event condition is designed in the sensor channel, and the triggered values are utilized to design the observer. Especially, to handle the sensor fault, the output is separated into two parts, and the estimation is realized with the help of a normal one. In the first part of this study, a class of interconnected nonlinear systems with partial loss of effectiveness of sensor fault is considered, and an event‐based distributed estimation scheme is established. In the second part, a class of more universal feedback interconnected nonlinear with both partial loss sensor fault and bias sensor fault is investigated. An augment system is formulated by an augmented vector composed of state and sensor faults. And then the estimation scheme is realized by utilizing the presented event‐based distributed observer. The convergence abilities of both the two conditions are proved and, finally, the estimation performances of the presented observer are verified by a numerical simulation system and an inverted pendulum system.

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Decentralized Robust Disturbance-Observer Based LFC of Interconnected Systems

Cited by 23 publications

References 38 publications

A Review of Load Frequency Control Schemes Deployed for Wind-Integrated Power Systems

A Review of Load Frequency Control Schemes Deployed for Wind-Integrated Power Systems

A Bi-Level Differential Game-Based Load Frequency Control With Cyber-Physical Security

Distributed observer design for interconnected nonlinear systems with faults and disturbances based on dynamic event conditions

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