Robustness assessment of the cyber‐physical system against cascading failure in a virtual power plant based on complex network theory

Gao, Xiaxiang; Li, Xiangjun; Yang, Xiyun

doi:10.1002/2050-7038.13039

Cited by 8 publications

(3 citation statements)

References 31 publications

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“…Two stochastic models based on complex network theory were presented in papers [9,13]. The former model presented normal distribution probability density function curves for power flow in different lines, while the latter model proposed random cyber-attacks under centralised and decentralised multi-agent control modes.…”

Section: Complex Network Theorymentioning

confidence: 99%

Virtual‐physical power flow method for cyber‐physical power system contingency and vulnerability assessment

Qiu,

Zhang,

Zhou

et al. 2023

IET Smart Grid

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Traditional power systems have evolved into cyber‐physical power systems (CPPS) with the integration of information and communication technologies. CPPS can be considered as a typical hierarchical control system that can be divided into two parts: the power grid and the communication network. CPPS will face new vulnerabilities which can have network contingencies and cascading consequences. To address this challenge, a virtual‐physical power flow (VPPF) method is proposed for the vulnerability assessment of CPPS. The proposed method contains dual power flows, one is to simulate a virtual power flow from decision‐making units, and the other is to simulate a physical power flow. In addition, a novel hierarchical control model is proposed that includes four layers of CPPS: the physical layer, the secondary device layer, the regional control layer, and the national control layer. The model is based on IEEE test cases using data and structures provided by MATPOWER. Denial‐of‐service (DoS) and false data injection (FDI) are simulated as two major cyber‐attacks in CPPS. A novel vulnerability index is proposed that consists of system voltage, network latency, and node betweenness as three key indicators. This is a comprehensive and adaptive index because it encompasses both cyber and physical system characteristics and can be applied to several types of cyber‐attacks. The results of the vulnerability assessment are compared in national and regional control structures of CPPS to evaluate the vulnerability of cyber‐physical nodes.

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Section: Complex Network Theorymentioning

confidence: 99%

Virtual‐physical power flow method for cyber‐physical power system contingency and vulnerability assessment

Qiu,

Zhang,

Zhou

et al. 2023

IET Smart Grid

View full text Add to dashboard Cite

show abstract

“…This shows disease will be transmitted in the network [15,21,22] as long as the transmission rate  is greater than 0. The network has a strong robustness when it is exposed to random attack [24][25][26] . Therefore, the network has a strong ability to resist random attacks and is very sensitive to the infectious disease spreading.…”

Section: Second Momentmentioning

confidence: 99%

Scale-free and small-world properties in an incompatibility hierarchical network

Wang

Tian

2022

J. Phys.: Conf. Ser.

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In accordance with a particular iterative method, an incompatibility hierarchical network is introduced and the topological features of the network is investigated, It contains the degree distribution, diameter, clustering coefficient, second moment of distribution and degree correlations. The incompatibility hierarchical network is a simultaneous small-world, scale-free, assortative and divergent, which makes it possible to research the complexity of some real networks.

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“…For example, power grids in different regions may be coupled together, or similar financial institutions may be related to lower systemic risk. is highly coupled characteristic brings many risks and challenges, such as cascading failure [26][27][28]. Attackers destroy cyberspace by attacking physical space [29].…”

Section: Introductionmentioning

confidence: 99%

Cascading-Failures Effect on Heterogeneous Internet of Things Systems under Targeted Selective Attack

Yang

Qian

Zhang

et al. 2022

Security and Communication Networks

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With the rapid development of the Internet of Things (IoT), the physical system and the network space are further deeply integrated, forming a larger-scale IoT heterogeneous fusion system. The attack mode considered in the security mechanism research of traditional large-scale complex systems is relatively simple; only simple attack types such as random attacks on physical systems or network systems are considered. In addition, existing attack modalities such as selectivity, locality, and distribution cannot fully consider the characteristics of security threats in the IoT system. In this paper, for large-scale heterogeneous IoT system scenarios, attackers can attack network systems or physical systems through cyberspace. We conduct situational awareness analysis on important traffic nodes or backbone nodes and study the cascading failures of two interdependent heterogeneous space systems. In view of the existence of such targeted attack threats in large-scale IoT heterogeneous systems, we focus on security assessment and risk prediction issues. First, this paper analyzes and models different IoT heterogeneous systems. Then using the penetration theory, we analyze the cascading failure process step by step and obtain the critical threshold for system collapse failure. Finally, we further verify the correctness of the theoretical values through simulation to effectively analyze and illustrate the reliability of the parameters affecting the system risk. The experimental results show that the large-scale IoT heterogeneous system presents a first-order discontinuous transition value near the critical threshold and the power-law index of the SF network has little effect on the system security.

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Robustness assessment of the cyber‐physical system against cascading failure in a virtual power plant based on complex network theory

Cited by 8 publications

References 31 publications

Virtual‐physical power flow method for cyber‐physical power system contingency and vulnerability assessment

Virtual‐physical power flow method for cyber‐physical power system contingency and vulnerability assessment

Scale-free and small-world properties in an incompatibility hierarchical network

Cascading-Failures Effect on Heterogeneous Internet of Things Systems under Targeted Selective Attack

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