With the access and application of distributed energy

microgrid and advanced measurement infrastructure in smart distribution network

the volume of information in a smart distribution network will be much greater than current distribution networks. In order to ensure the reliability and economy of the information network

optimal planning is needed. An optimization model is given for the survivability of the smart information network by using the N-1 criterion. A heuristic algorithm is proposed to solve the model successfully. Finally

the heuristic algorithm is compared with the 1+1 protection optimal model in an example of distribution information network planning for a county

the results showing that the heuristic algorithm can satisfy the survivability constraints of network planning.