A Node Backup Algorithm for Fault Cascade Degradation in Virtualization Power Communication Network

This paper studies the fault cascade degradation in virtualization power communication network. To fulfill certain requirements (e.g. reasonable network design in the network virtualization environment (NV)), we propose a network optimization algorithm: PNGA (Primary Nodes Group Algorithm) based on the complex network theory. The main goal of PNGA is promoting the robustness of the entire network. In the simulation experiment, this paper analyzes the network modeling and topological characteristics of a three-tier power grid in NV. We use the degree sorting algorithm as the control group which is widely used in power grid. Under different attack strategies, the results of the simulations we performed in this paper have shown that PNGA is superior to the rest of the algorithms in suppressing faults.