Risk assessment and optimization for key services in smart grid communication network

This paper proposes a risk assessment model of key service and optimization methods to reduce service risk in smart grid communication network. Firstly, we analyze the probability of failure of communication link and node which is induced by external factors, like natural disaster, human attack and system disturbances. Then using importance of services, links and nodes, we build the risk model of failure for key services. Further, we propose optimization methods based on Dijkstra algorithms to reduce the risk of key services. Finally, based on part of smart grid communication network topology structure from a Chinese province, the simulation results show that the risk of key services and whole network are reduced.