Vulnerability Analysis and Evaluation of Nodes in Cyber-Physical Power System under the Framework of Blockchain

To reach the aim of carbon peaking and carbon neutral before 2030 and 2060, the strengthen of cyber-physical power systems is the priority, and thus the vulnerability analysis under the framework of blockchain is studied in this paper. In cyber-physical power systems, power system and communication system based on blockchain are strongly coupling and mutually independent. Communication system as the vital infrastructure can effectively influences the security of cyber-physical power systems, and the 5G network based on blockchain introduced can dramatically improve its security. In this paper, we propose the isolated clusters-based model for cascading failure, which can differentiate the survival clusters after attack. Considering that traditional searching methods neglect the nodes characteristic of coupling system, we propose the hybrid attack method. In simulation, we find that the proposed hybrid attack methods behave well in disintegrating the systems into isolated clusters than other attack method and can revise the corresponding adjustable parameter to better locate vulnerable nodes in cyber-physical power systems.