The Smart Grid Vulnerability Analysis and Chain Faults Suppression Under Interdependent Coupling Relationship

With the widespread application of communication and information technology in the power system, the degree of interdependence between information networks and power networks is becoming deeper and deeper. On the one hand, the interdependent coupling of the smart grid greatly improves and optimizes the operation and control efficiency of the grid. On the other hand, it has somehow made the smart grid more vulnerable and has become one of the biggest contributors to the spread of chain failures. In this paper, we review the research progress on how to effectively control or suppress the impact of dependent coupling on the vulnerability of smart grid. This overview is presented from the perspectives of dependent coupling structure and vulnerability analysis of smart grids, respectively. We synthesize and analyze existing work, distill the issues and challenges still faced in the approach to controlling or suppressing the impact of interdependent coupling on smart grid vulnerability, and discuss future research trends and directions in the field.