A routing optimization method based on risk prediction for communication services in smart grid

As power communication network is more and more important in smart grid, to decrease the failure risk of power system caused by the interruption of communication service, this paper propose a novel routing optimization method based on risk predication for communication services. Firstly, we analyze the probability of failure of communication link and node which is induced by external factors, like winds and snows, equipment failures, and etc. Then based on importance of services, links and nodes, we calculate the risk of failure of communication link and node. Further, we propose three service risk indicators and corresponding improved Dijkstra algorithms to optimize service routing, thus to decrease the network failure probability. Finally, based on part of power grid topology structure from a Chinese province, the simulation results show that the service risk o and the risk of the whole network are also reduced.