Zarei Mahdi Sadegh, Atrianfar Hajar
Electrical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran.
Electrical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran; Center of Excellence on Control and Robotics, Department of Electrical Engineering, Amirkabir University of Technology, Tehran, Iran.
ISA Trans. 2023 Aug;139:191-204. doi: 10.1016/j.isatra.2023.03.044. Epub 2023 Apr 4.
In this paper, we propose a control scheme to ensure the microgrid control layers are resilient to cyberattacks. The studied microgrid consists of several distributed generation (DG) units and we consider the hierarchical control structure that is common for microgrids. The use of communication channels among DGs has made microgrids more vulnerable and this is where cybersecurity issues arise. In this work we added three algorithms, reputation-based, Weighted Mean Subsequence Reduced (W-MSR) and Resilient Consensus Algorithm with Trusted Nodes (RCA-T), to the secondary control layer of the microgrid and made them resilient to false data injection (FDI) attacks. In reputation-based control, some procedures are used for detecting the attacked DGs and isolating them from the others. W-MSR and RCA-T are Mean Subsequence Reduced (MSR)-based algorithms that fade the effect of attacks without finding them. These algorithms use a simple strategy that ignores some extreme values of neighboring agents, so an attacker can simply get ignored. Our analysis of the reputation-based algorithm is based on scrambling matrices, so the communication graph can switch in a prescribed set. In each of the above cases, to evaluate the performance of the designed controllers, in addition to theoretical analysis, we evaluated and compared the controllers using simulation.
在本文中，我们提出了一种控制方案，以确保微电网控制层对网络攻击具有弹性。所研究的微电网由多个分布式发电（DG）单元组成，并且我们考虑了微电网常见的分层控制结构。DG之间通信通道的使用使微电网更容易受到攻击，这就是网络安全问题出现的地方。在这项工作中，我们在微电网的二次控制层添加了三种算法，即基于声誉的算法、加权平均子序列约简（W-MSR）算法和带可信节点的弹性共识算法（RCA-T），使它们能够抵御虚假数据注入（FDI）攻击。在基于声誉的控制中，一些程序用于检测受攻击的DG并将它们与其他DG隔离开来。W-MSR和RCA-T是基于平均子序列约简（MSR）的算法，它们在不找出攻击的情况下减弱攻击的影响。这些算法使用一种简单的策略，即忽略相邻代理的一些极端值，因此攻击者可能会被简单地忽略。我们对基于声誉的算法的分析基于置乱矩阵，因此通信图可以在规定的集合中切换。在上述每种情况下，为了评估所设计控制器的性能，除了理论分析之外，我们还通过仿真对控制器进行了评估和比较。
