Community-Based Link-Addition Strategies for Mitigating Cascading Failures in Modern Power Systems

Hu, Po; Lee, Lily

doi:10.3390/pr8020126

Cited by 4 publications

(3 citation statements)

References 35 publications

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“…The interdependent power network disruptor (IPND) is proven as an NP-hard problem. A new evaluation index is proposed to measure the impacts on the network under sequential attacks [11]. The power grid coupled with double-star networks has a lower probability of failure than the mesh structure.…”

Section: Vulnerability Assessmentmentioning

confidence: 99%

Active and Passive Defense Strategies of Cyber-Physical Power System against Cyber Attacks Considering Node Vulnerability

Shi

Wang

et al. 2022

Processes

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Vulnerable parts in the cyber-physical power system can be maliciously attacked to trigger cascading failures. This paper proposes a defense framework with active and passive defense hybrid strategies. First, a comprehensive vulnerability assessment index is presented to identify vital nodes contributing to failure extension. The proposed index is based on both physical characteristics and topology. Physical characteristic is assessed through the optimal power flow to calculate the load losses. The topology index is obtained by the attacking node and calculating the nodes lost at the steady state. Then, the active and passive defense strategies are established. Deploying false nodes based on the comprehensive vulnerability index is set as the active defense strategy. Changing from centralized control mode to centralized-distributed control mode is the passive defense strategy. The system can defend against attacks with active and passive strategies effectively in the attacking experiments. Finally, we have made a profound study of the first-order percolation problem. The first-order percolation disappears under the active and passive defense strategies in a scale-free network, while the small world network transfers from the first-order percolation to the second-order percolation. The findings indicated that the diverse results resulted from their structure.

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Section: Vulnerability Assessmentmentioning

confidence: 99%

Active and Passive Defense Strategies of Cyber-Physical Power System against Cyber Attacks Considering Node Vulnerability

Shi

Wang

et al. 2022

Processes

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“…The graphs can be divided into communities, and it is thus of interest to find out an optimal community to alleviate cascading failure propagation. In [10], Hu and Lee proposed three low-degree-node-based link-addition strategies to optimize the original topology, by considering islanding characteristics and node vulnerability. An evaluation index was addressed to measure impacts from sequential attacks on the network.…”

Section: Condition Monitoring and Resilient Strategies For Complex Industrial Processesmentioning

confidence: 99%

Special Issue on “Advances in Condition Monitoring, Optimization and Control for Complex Industrial Processes”

Chen

Zhang

2021

Processes

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“…In principle, fault diagnosis (FD) and fault-tolerant control (FTC) deployed on AUVs could improve their survivability and optimize the mission execution in response to faults. Real-time FD should be an early action to expose system faults [ 3 ], which probably provide information of fault severity and location for FTC to ensure the system stability [ 4 , 5 ]. Research efforts on AUV FD have been carried out for several decades facing the faults of actuators, sensors, and hardware/software, where the methods are typically assorted into categories of qualitative and quantitative analyses [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Active Fault Localization of Actuators on Torpedo-Shaped Autonomous Underwater Vehicles

Liu

Yan

Luo

et al. 2021

Sensors

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To ensure the mission implementation of Autonomous Underwater Vehicles (AUVs), faults occurring on actuators should be detected and located promptly; therefore, reliable control strategies and inputs can be effectively provided. In this paper, faults occurring on the propulsion and attitude control systems of a torpedo-shaped AUV are analyzed and located while fault features may induce confusions for conventional fault localization (FL). Selective features of defined fault parameters are assorted as necessary conditions against different faulty actuators and synthesized in a fault tree subsequently to state the sufficiency towards possible abnormal parts. By matching fault features with those of estimated fault parameters, suspected faulty sections are located. Thereafter, active FL strategies that analyze the related fault parameters after executing purposive actuator control are proposed to provide precise fault location. Moreover, the generality of the proposed methods is analyzed to support extensive implementations. Simulations based on finite element analysis against a torpedo-shaped AUV with actuator faults are carried out to illustrate the effectiveness of the proposed methods.

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Community-Based Link-Addition Strategies for Mitigating Cascading Failures in Modern Power Systems

Cited by 4 publications

References 35 publications

Active and Passive Defense Strategies of Cyber-Physical Power System against Cyber Attacks Considering Node Vulnerability

Active and Passive Defense Strategies of Cyber-Physical Power System against Cyber Attacks Considering Node Vulnerability

Special Issue on “Advances in Condition Monitoring, Optimization and Control for Complex Industrial Processes”

Active Fault Localization of Actuators on Torpedo-Shaped Autonomous Underwater Vehicles

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