Leveraging Network Topology Optimization to Strengthen Power Grid Resilience Against Cyber-Physical Attacks
Leveraging Network Topology Optimization to Strengthen Power Grid Resilience Against Cyber-Physical Attacks
复制标题
利用网络拓扑优化增强电网抵御网络物理攻击的弹性
DOI：
10.1109/tsg.2020.3028123
复制
发表时间：
2021-03-01
影响因子：
9.6
通讯作者：
Wang, Lingfeng
中科院分区：
文献类型：
--
作者：
Liu, Zhaoxi;Wang, Lingfeng
由于对手潜在的蓄意攻击，当代电力系统面临着越来越大的风险。考虑到电力系统对整个社会的重要性，加强电网抵御恶意网络物理攻击的能力正在成为一项关键任务。在这篇文章中，一个双层优化模型制定协调的网络物理攻击对电网。为了提高电力系统的抗毁能力，提出了一种基于网络拓扑优化（NTO）的网络物理攻击抗毁模型。提出了一种用于评估电力系统抵御协同网络物理攻击的弹性指标。在改进的IEEE 57节点和118节点系统上进行了案例研究，以说明协调的网络物理攻击的影响，并验证所提出的基于NTO的方法。算例结果表明，基于NTO的缓解策略能有效降低网络物理协同攻击下的电力系统负荷损失。与传统的基于最优重调度（OR）和最优传输切换（OTS）的补救方法相比，所提出的基于NTO的方法提高了系统的弹性。
The contemporary power systems are facing a growing level of risks due to potential deliberate attacks by adversaries. Strengthening the resilience of power grids against malicious cyber-physical attacks is emerging as a critical task considering the importance of power systems to the entire society. In this article, a bilevel optimization model is developed to formulate the coordinated cyber-physical attacks against the power grids. In order to enhance the resilience of the power systems, a networked topology optimization (NTO) based model is proposed to mitigate the coordinated cyber-physical attacks. Resilience metrics are proposed to evaluate the power system resilience against the coordinated cyber-physical attacks. Case studies were conducted on the modified IEEE 57-bus and 118-bus systems to illustrate the impacts of coordinated cyber-physical attacks as well as validate the proposed NTO based approach. The results of the case studies show that the proposed NTO based mitigation strategy can effectively reduce the load loss of the power system under the coordinated cyber-physical attacks. The resilience of the system is improved by the proposed NTO based approach compared with the conventional optimal redispatch (OR) and optimal transmission switching (OTS) based remedial methods.