Robustness of Cyber-Physical Supply Networks in Cascading Failures

Entropy

Huanyu Ren¹  Xiongping Yue¹  Dong Mu¹ 

[1] School of Economics and Management, Beijing Jiaotong University, Beijing 100044, China;

关键词: robustness;    cascading failure;    cyber-physical supply networks;    underload;    overload;   

DOI  :  10.3390/e23060769

来源: DOAJ

【 摘 要 】

A cyber-physical supply network is composed of an undirected cyber supply network and a directed physical supply network. Such interdependence among firms increases efficiency but creates more vulnerabilities. The adverse effects of any failure can be amplified and propagated throughout the network. This paper aimed at investigating the robustness of the cyber-physical supply network against cascading failures. Considering that the cascading failure is triggered by overloading in the cyber supply network and is provoked by underload in the physical supply network, a realistic cascading model for cyber-physical supply networks is proposed. We conducted a numerical simulation under cyber node and physical node failure with varying parameters. The simulation results demonstrated that there are critical thresholds for both firm’s capacities, which can determine whether capacity expansion is helpful; there is also a cascade window for network load distribution, which can determine the cascading failures occurrence and scale. Our work may be beneficial for developing cascade control and defense strategies in cyber-physical supply networks.

【 授权许可】

Unknown