5G用作配电网差动保护通道的可行性分析

光纤铺设费用高且普及率较低,不利于配网差动保护的大面积推广。5G的高性能和商用化为解决配网差动保护通道问题提供了理想机遇。通过理论分析和计算,提出差动保护对于通信通道的要求,包括通道速率、时延、可靠性以及安全性等方面。介绍并分析了5G差动保护实现的技术基础——网络切片、切片架构以及基于网络切片的电网安全体系。最后,通过分析5G的主要性能指标,得出5G对于配电网差动保护具有良好的适配性,可以取代光纤成为配网差动保护新的数据通道。

Feasibility analysis of adopting 5G in differential protection of distribution networks

Fiber laying costs are high and its popularity is low. These factors limit the large-scale promotion of differential protection in distribution networks. The high performance and commercialization of 5G provides a rare chance for solving the above channel problem. Through theoretical analysis and calculation, the requirements for a communication channel of differential protection are presented, including rate, delay, reliability and security of the channel. Then, the technical basis for 5G-based differential protection is introduced and analyzed. This mainly discusses network slice, slice architecture, and the security system when used for the power grid. Finally, through analyzing the main performance index of 5G, it can be concluded that 5G has good adaptability to differential protection of a distribution network, and can replace optical fiber to become a new communication channel. This work is supported the National Natural Science Foundation of China (No. 51877127), and the Science and Technology Project of Shandong Electric Power Company (No. 5206011900DG), and the Science and Technology Project of the Headquarters of State Grid Corporation of China (No. 5100-202055018A-0-0-00).