Systematic planning of moving target defence for maximising detection effectiveness against false data injection attacks in smart grid
Systematic planning of moving target defence for maximising detection effectiveness against false data injection attacks in smart grid
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DOI：
10.1049/cps2.12012
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发表时间：
2021-05
期刊：
影响因子：
--
通讯作者：
Bo Liu;Hongyu Wu
中科院分区：
文献类型：
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作者：
Bo Liu;Hongyu Wu
移动目标防御（MTD）已经获得牵引力，以挫败针对电网中的状态估计（SE）的虚假数据注入攻击。MTD主动干扰配备有分布式灵活交流输电系统（D-FACTS）设备的输电线路的电抗，以伪造攻击者关于系统配置的知识。然而，现有的文献并没有系统地研究什么影响MTD的检测效果，以及如何可以提高它的基础上的拓扑分析。这些问题在这里从MTD计划的角度来解决，在MTD计划中确定D-FACTS放置。我们首先利用复合矩阵的秩和检测效率之间的关系。然后，我们严格地推导出上界和下界的攻击检测概率的MTD与给定的复合矩阵的秩。此外，我们还分析了现有的规划方法，并强调了D-FACTS设备对总线覆盖的重要性。为了提高检测效率，我们提出了一种新的基于图论的规划算法，以保持最大秩的复合矩阵，同时覆盖所有必要的巴士。多个系统的比较结果表明，该算法在DC-和AC-SE的高检测效率。
Moving target defence (MTD) has been gaining traction to thwart false data injection attacks against state estimation (SE) in the power grid. MTD actively perturbs the reactance of transmission lines equipped with distributed flexible AC transmission system (D ‐ FACTS) devices to falsify the attacker's knowledge about the system configuration. However, the existing literature has not systematically studied what influences the detection effectiveness of MTD and how it can be improved based on the topology analysis. These problems are tackled here from the perspective of an MTD plan in which the D ‐ FACTS placement is determined. We first exploit the relation between the rank of the composite matrix and the detecting effectiveness. Then, we rigorously derive upper and lower bounds on the attack detecting probability of MTDs with a given rank of the composite matrix. Furthermore, we analyse existing planning methods and highlight the importance of bus coverage by D ‐ FACTS devices. To improve the detection effectiveness, we propose a novel graph theory–based planning algorithm to retain the maximum rank of the composite matrix while covering all necessary buses. Comparative results on multiple systems show the high detecting effectiveness of the proposed algorithm in both DC ‐ and AC ‐ SE.