This paper discusses the challenges faced by cyber-physical microgrids (MGs) due to the inclusion of information and communication technologies in their already complex, multi-layered systems. The work identifies a research gap in modeling and analyzing stealthy intermittent integrity attacks in MGs, which are designed to maximize damage and cancel secondary control objectives. To address this, the paper proposes a nonlinear residual-based observer approach to detect and mitigate such attacks. In order to ensure a stable operation of the MG, the formulation then incorporates stability constraints along with the detection observer. The proposed design is validated through case studies on a MG benchmark with four distributed generators, demonstrating its effectiveness in detecting attacks while satisfying network and stability constraints.

翻译：本文探讨了网络物理微电网由于在已复杂多层系统中引入信息通信技术所面临的挑战。研究指出，在微电网中建模与分析旨在最大化破坏并取消次级控制目标的隐蔽间歇性完整性攻击方面存在研究空白。为解决此问题，本文提出了一种基于非线性残差的观测器方法，用于检测并缓解此类攻击。为确保微电网稳定运行，该方案在检测观测器中融入了稳定性约束。通过一个包含四台分布式发电机的微电网基准案例研究，验证了所提设计的有效性，表明其能在满足网络与稳定性约束的同时有效检测攻击。