CPS: Synergy: Collaborative Research: A Unified System Theoretic Framework for Cyber Attack-Resilient Power Grid

电网是一个复杂的网络物理系统，其可靠、安全的运行对国家安全和经济活力至关重要。针对该国关键基础设施的网络攻击，无论是在数量上还是在复杂性上，都存在着日益增长和不断演变的威胁。因此，网络安全“包括攻击预防、检测、缓解和恢复能力”在当今电网和新兴智能电网中至关重要。该项目的目标是为电力系统的网络-物理安全开发一个统一的系统理论框架和分析工具，捕捉物理系统和网络系统的动态。研究任务包括：1)开发一种影响分析方法，包括系统地识别对电力系统广域控制的最坏情况下的隐身攻击，并从稳定性破坏和性能损失方面评估由此产生的后果。2)采用系统论、网络安全和基于模型/数据驱动的工具的组合方法，以特定领域的异常检测/容错算法和攻击弹性控制算法的形式，开发健壮的网络物理对策。3)使用真实的系统拓扑和攻击场景，通过仿真和基于试验台的评估相结合的方法来评估所提出的影响建模和缓解算法的有效性。该项目为增强电网的安全性和弹性做出了重大贡献，为关键基础设施的网络物理安全奠定了科学基础。此外，该项目还开发了新的课程模块，指导研究生和本科生，包括未被充分代表的少数族裔，利用行业合作，并向高中生提供网络安全概念。

The electric power grid is a complex cyber-physical system, whose reliable and secure operation is of paramount importance to national security and economic vitality. There is a growing and evolving threat of cyber-based attacks, both in numbers and sophistication, on the nation's critical infrastructure. Therefore, cyber security "encompassing attack prevention, detection, mitigation, and resilience" is critical in today's power grid and the emerging smart grid. The goal of this project is to develop a unified system-theoretic framework and analytical tools for cyber-physical security of power systems, capturing the dynamics of the physical system as well as that of the cyber system. Research tasks include: 1) Development of a methodology for impact analysis that includes systematic identification of worst-case stealthy attacks on the power system's wide-area control and evaluating the resulting consequences in terms of stability violations and performance loss. 2) Development of robust cyber-physical countermeasures, employing a combination of methods from system theory, cyber security, and model-based/data-driven tools, in the form of domain-specific anomaly detection/tolerance algorithms and attack-resilient control algorithms. 3) Evaluating the effectiveness of the proposed impact modeling and mitigation algorithms through a combination of simulation and testbed-based evaluations, using realistic system topologies and attack scenarios. The project makes significant contributions to enhance the security and resiliency of the power grid and lays a scientific foundation for cyber-physical security of critical infrastructure. Also, the project develops novel curriculum modules, mentors graduate and undergraduate students including under-represented minorities, leverages industrial collaborations, and exposes high school students to cyber security concepts.