Reliability Implementation Technology of Distrubution Automation System Based on 5G

The smart grid requires real-time, reliable, and secure communication. Based on 5G reference point architecture, this paper has proposed a heterogeneous wireless non-public network, and added I-SMF, I-UPF to ensure the continuity of network switching business sessions. This paper described session switching process and the deployment plan of a heterogeneous integrated network. In order to ensure transmission reliability, the end-to-end monitoring token bucket algorithm is used to monitor network performance. Once a fault is found, the switching action is executed immediately. And random backoff algorithm is adopted to avoid end-to-end switching conflicts. Finally, experimental simulation and field test results show that as the number of backoff increases, the handover success rate is closer to one. During field test, businesses communication channel switching and transmission delay are only 100ms level.