With the rise of 5G technology and the deepening of network co-construction and sharing

power business applications have put forward higher demands on network delay

bandwidth

reliability and other indicators

and 5G + business construction has entered the fast lane. The principle of the longitudinal difference of 5G distribution network is analyzed

and a system architecture

communication networking and commissioning plan are proposed. In the laboratory environment

the communication system construction

parameter configuration and online commissioning of double longitudinal difference protection device are carried out

and taking 10 k V distribution network line for application example

a new indoor distributed system is built to meet the requirements of 5G network communication

and two different 5G networking methods are horizontally compared. The test results show that SA networking method is superior to NAS network and is ultra-low. The network channel delay and ultra-high network bandwidth can meet the application conditions of 5G longitudinal differential channels. The implementation and application of the overall plan can be used as a reference for the construction of intelligent distributed power distribution protection and self-healing control systems in the future.