Under the background of energy Internet, the communication load of intelligent substation rises sharply, which leads to poor transmission reliability and real-time performance of communication network, and no link fault self-healing ability. Based on the analysis of the topology of communication network, this paper proposes a communication mode which combines MLPs with uninterruptible dual redundant residual heat backup to improve the self-healing ability in case of link failure.The reliability of the improved communication mode is verified by the simulation analysis of the link normal and link failure.The results show that the improved communication mode improves the self-healing ability of link fault to a certain extent. It provides reference and reference for the study of self-healing ability of communication network fault of intelligent substation in China.