Fully Distributed Economic Dispatch for Cyber-physical Power System with Time Delays and Channel Noises

Zhang, Yuhang; Ni, Ming; Sun, Yonghui

doi:10.35833/mpce.2020.000847

Cited by 18 publications

(7 citation statements)

References 26 publications

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“…1. Optimal routing of information network [2], [10], [16], [19], [82]- [84]; 2. Optimal dispatch of the power system under cyberattacks [85]-[87]; 3.…”

Section: Optimal Operation Of Cppsmentioning

confidence: 99%

“…This approach finds the most "reliable" information infrastructure for the transmission of the most "important" data. Communication delays and noises should also be considered in finding the optimal dispatch in smart grids [10]. The proposed distributed economic dispatch model in [10] takes into account these two crucial factors and provides a robust dispatching plan.…”

Section: A Optimal Routing Of Information In Smart Gridsmentioning

confidence: 99%

“…Communication delays and noises should also be considered in finding the optimal dispatch in smart grids [10]. The proposed distributed economic dispatch model in [10] takes into account these two crucial factors and provides a robust dispatching plan. Wide-area control (WAC) systems, which collect the data from PMUs through the wide-area network (WAN) communication systems, are used for the stability purposes in large-scale power systems [83].…”

Section: A Optimal Routing Of Information In Smart Gridsmentioning

confidence: 99%

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Optimization Models in Cyber-Physical Power Systems: A Review

et al. 2022

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The growing interconnection between information networks and power grids enables a more efficient and economical operation, but also introduces significant challenges in modern cyber-physical power systems, such as malicious cyber-attacks. Several cyber-attacks have been reported in the recent decade, affecting hundreds of thousands of people. These attacks can lead to large power system blackouts, and optimization models are essential tools for optimal decision-making in reliable and secure operation of cyber-physical power systems. In this paper, optimization models in cyber-physical power systems are extensively reviewed and classified based on their applications, including cyber-security and optimal operation. One major application of optimization is in cyber-security evaluation of smart grids. This paper investigates the models to implement cyber-attacks against state estimation, coordinated cyber-physical attacks aiming to cover each other, and financially-motivated attacks in electricity markets; optimal defense strategies and interactions between the attacker and the defender are also introduced. Furthermore, optimization models used in the operation and dispatching of cyber-physical power and energy systems, optimal routing of information networks, and privacy-preserving models are presented. Finally, as solving optimization models is a crucial step in optimal decision-making, solvers in the literature are also introduced.

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“…1. Optimal routing of information network [2], [10], [16], [19], [82]- [84]; 2. Optimal dispatch of the power system under cyberattacks [85]-[87]; 3.…”

Section: Optimal Operation Of Cppsmentioning

confidence: 99%

Section: A Optimal Routing Of Information In Smart Gridsmentioning

confidence: 99%

Section: A Optimal Routing Of Information In Smart Gridsmentioning

confidence: 99%

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Optimization Models in Cyber-Physical Power Systems: A Review

et al. 2022

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“…In [38], a theoretical upper bound of time delays is obtained, ensuring that distributed EDP can be solved. In [39], both communication delays and measurement delays are considered in designing a distributed algorithm for EDP. Nonetheless, it should be noted that these findings are based on the utilization of quadratic cost functions for modeling the EDP.…”

Section: Introductionmentioning

confidence: 99%

Fully Distributed Optimal Economic Dispatch for Microgrids under Directed Communication Networks Considering Time Delays

Zhang,

2023

Energies

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Distributed generation and demand-side management are expected to play a more prominent role in future power systems. However, the increased number of generations and load demands pose new challenges to optimal energy management in a microgrid. In this paper, an economic dispatch model for microgrids considering Traditional Generators (TGs), energy storage units, wind turbines (WTs), and flexible loads is established. To tackle the Economic Dispatch Problem (EDP) over directed communication networks, a fully distributed algorithm developed by leveraging a two-step state information exchange mechanism is proposed. In addition, by employing a fixed stepsize, the proposed algorithm demonstrates rapid convergence. Furthermore, our algorithm is well-suited for nonquadratic convex cost functions. Subsequently, we extend our algorithm to address imperfect communication scenarios. Even in the presence of arbitrarily large yet bounded time delays, our algorithm exhibits robustness. Finally, several numerical examples are given to verify the correctness and effectiveness of the developed results.

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“…The cyber-physical power system is a sophisticated intelligent system with advanced information and communication technologies closely integrated with a physical process [1][2][3][4][5]. Nowadays, lots of fundamental functions of power systems heavily rely on cyber equipment for flexible and efficient operation and control, which increase the cybersecurity risk to itself.…”

Section: Introductionmentioning

confidence: 99%

Security-Oriented Cyber-Physical Risk Assessment for Cyberattacks on Distribution System

Zhang,

2023

Applied Sciences

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With the increasing deployment of advanced sensing and measurement devices, the modern distribution system is evolved into a cyber-physical power distribution system (CPPDS). Due to the extensive application of information and communication technology, CPPDS is prevalently exposed to a wide range of cybersecurity threats. In this paper, a novel security-oriented cyber-physical risk assessment method for CPPDS is proposed. Based on the information model composed of logical nodes, an attack graph of privilege promotion by exploiting the cyber vulnerabilities is constructed. The physical consequence caused by cyberattack is analyzed in detail. By using the Markov decision process (MDP) theory, the cyber-physical risk index (CPRI) is calculated. Furthermore, considering the allocation of the finite defense resource, the modified MDP approach with an attack–defense game is presented. The effectiveness of the proposed method is demonstrated with case studies on a four-feeder IEEE-RTBS test system.

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Fully Distributed Economic Dispatch for Cyber-physical Power System with Time Delays and Channel Noises

Cited by 18 publications

References 26 publications

Optimization Models in Cyber-Physical Power Systems: A Review

Optimization Models in Cyber-Physical Power Systems: A Review

Fully Distributed Optimal Economic Dispatch for Microgrids under Directed Communication Networks Considering Time Delays

Security-Oriented Cyber-Physical Risk Assessment for Cyberattacks on Distribution System

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