Open Access

ARTICLE

Risk-Balanced Routing Strategy for Service Function Chains of Cyber-Physical Power System Considering Cross-Space Cascading Failure

He Wang, Xingyu Tong, Huanan Yu^*, Xiao Hu, Jing Bian
The Key Laboratory of Modern Power System Simulation and Control Renewable Energy Technology, Ministry of Education, Northeast Electric Power University, Jilin, 132000, China
* Corresponding Author: Huanan Yu. Email: yhn810117@163.com

Energy Engineering https://doi.org/10.32604/ee.2024.050594

Received 11 February 2024; Accepted 10 April 2024; Published online 07 May 2024

Abstract

Cyber-physical power system (CPPS) has significantly improved the operational efficiency of power systems. However, cross-space cascading failures may occur due to the coupling characteristics, which poses a great threat to the safety and reliability of CPPS, and there is an acute need to reduce the probability of these failures. Towards this end, this paper first proposes a cascading failure index to identify and quantify the importance of different information in the same class of communication services. On this basis, a joint improved risk-balanced service function chain routing strategy (SFC-RS) is proposed, which is modeled as a robust optimization problem and solved by column-and-constraint generation (C-CG) algorithm. Compared with the traditional shortest-path routing algorithm, the superiority of SFC-RS is verified in the IEEE 30-bus system. The results demonstrate that SFC-RS effectively mitigates the risk associated with information transmission in the network, enhances information transmission accessibility, and effectively limits communication disruption from becoming the cause of cross-space cascading failures.

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Keywords

Cyber-physical power system; service function chain; risk balance; routing optimization; cascading failure

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