使用中间性中心性进行风险敏感性分析的网络物理组件排序

IF 1.7 Q3 COMPUTER SCIENCE, INFORMATION SYSTEMS IET Cyber-Physical Systems: Theory and Applications Pub Date : 2021-04-21 DOI:10.1049/cps2.12010
Amarachi Umunnakwe, Abhijeet Sahu, Mohammad Rasoul Narimani, Katherine Davis, Saman Zonouz
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引用次数: 11

摘要

本文提出了一种基于网络物理中间性中心性(CPBC)指数的电力系统风险分析中关键部件排序模型。风险评估作为应急分析的一部分,是一项关键活动,可以识别和评估导致系统脆弱性的组件中断,帮助运营商提高弹性。提出了一种电力系统网络物理风险评估模型,该模型基于组件对攻击者的脆弱性和受损资产对系统运行的影响,计算并为系统运营商提供有效的保护策略。我们提出了CPBC指数,它遍历生成的攻击图,根据它们在减少对手对电力系统影响方面的重要性对组件进行排名。CPBC扩展了中间中心,并集成到分析中,系统组件之间通信的服务和安全成本,以及组件被利用为目标中继的对手媒介的可能性。拟议的模型建议采取行动,考虑到网络和物理组件之间的互连,以及网络引起的常见漏洞和与这些连接相关的暴露分数,从而保护关键组件。在网络物理态势感知8变电站和扩展的IEEE 300总线网络物理电力系统模型上实现了所提出的模型,并给出了所提出的组件排序模型对电力系统安全感知运行的影响结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Cyber-physical component ranking for risk sensitivity analysis using betweenness centrality

This article proposes a model for critical component ranking in power system risk analysis using a proposed cyber-physical betweenness centrality (CPBC) index. Risk assessment, as part of the contingency analysis, is a critical activity that can identify and evaluate component outages that lead to system vulnerability, aiding operators to improve resilience. A power system cyber-physical risk assessment model is proposed that calculates and offers an efficient protection strategy to the system operator based on component vulnerability to adversaries and the impact of compromised assets on the system operation. We present the CPBC index, which traverses generated attack graphs to rank components according to their importance in reducing adversary impact on the power system. The CPBC extends upon betweenness centrality and integrates into analysis, the services and security cost of communications between system components, as well as the likelihood of component exploitation as an adversary medium to the target relays. The proposed model recommends actions, taking into account the interconnections between cyber and physical components as well as cyber-induced Common Vulnerabilities and Exposure scores associated with these connections, thus protecting critical components. The proposed model is implemented on the Cyber-Physical Situational Awareness 8-substation and extended IEEE 300-bus cyber-physical power system models, and results are presented on the impacts of the proposed component ranking model on the security-aware operation of the power system.

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来源期刊
IET Cyber-Physical Systems: Theory and Applications
IET Cyber-Physical Systems: Theory and Applications Computer Science-Computer Networks and Communications
CiteScore
5.40
自引率
6.70%
发文量
17
审稿时长
19 weeks
期刊最新文献
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