Formal modeling and verification of flexible load control for power grid CPS based on differential dynamic logic

In this paper, we proposed a formal modeling and verification method of CPS flexible load control strategy based on differential dynamic logic theory. HybridUML is used to construct the model for critical control process of flexible load in power grid. Based on the differential dynamic logic theory, the formalization protocol is created using the automatic hybrid reasoning tool KeYmaera, and the differential dynamic logic calculus rules are applied to formalize the system attributes. The effectiveness of the method is verified by instantiating the typical application scenario of flexible load.