Reliability Assessment of Intelligent Distributed Feeder Automation System Based on 5G Communication

With the wide application of 5G communication technology in feeder automation systems, the cyber-physical system is further integrated, and its low latency, high bandwidth, and large connection characteristics further enhance the time and speed of the system to deal with faults, and also have a certain impact on the reliability of feeder automation system. This paper takes the smart distributed feeder automation system as the research object, and also considers 5G communication as the transmission channel between smart terminal units. Based on the fault self-healing principle of distributed feeder automation, by establishing the interaction model between the communication system and the physical switching elements, the influence of the communication element failure in the communication system and the 5G network failure on the traditional physical distribution network is analyzed; Then, a sequential Monte Carlo sampling method is used to simulate the system to obtain the reliability index considering the communication system failure, and to quantify the reasons for the influence of communication component failure rate and communication network loading rate on the reliability of the feeder automation system; Finally, the effectiveness of the proposed method and model is verified by arithmetic simulation.