DoS攻击下电力网络控制系统脆弱性分析及防御

Vulnerability analysis and countermeasures of electrical network control systems under DoS attacks

考虑DoS攻击对电力信息物理系统的影响,提出一种电力网络控制系统脆弱节点的检测方法和防御策略,采用分布式控制架构设计传感器和RTU的传输路径.通过求解最稀疏矩阵优化问题,提出一种识别并保护电力通信网脆弱节点和边的方法,保证系统实现安全稳定运行.进一步提出一种可以抵御DoS攻击的电力网络控制系统拓扑设计方法,研究系统遭受DoS攻击时能恢复稳定的电力网络控制系统拓扑连接方式.IEEE 9节点系统用于仿真验证,充分验证了算法的可行性和可靠性,并针对该9节点电力网络控制系统,给出了具体的网络攻击防御策略.

Considering the influence of denial-of-service（Do S） attacks on electrical cyber physical systems（ECPSs）, this paper studies the problem of vulnerability analysis and countermeasure synthesis for electrical network control systems under Do S attacks.Distributed control and its features are considered for the design of transmission paths of sensors and remote terminal units（RTUs） based on automatic voltage regulators（AVR） of synchronous generators.An algorithm is proposed for identifying and protecting vulnerable nodes and lines in electrical network control systems by solving a problem of optimum sparse matrix.Countermeasures of electrical communication networks under Do S attacks are further studied.The proposed algorithms are validated on the IEEE 9-node system.Spectific advice and defending strategies against cyber attacks are given according to the algorithms.