Configuration strategy and application for distribution network protection based on standalone 5G

Abstract

The 5G network, with its characteristics of wide coverage, high reliability and low delay communication, has a high application value in solving the “last kilometer” problem in interconnection between the terminal equipment of a distribution network. To improve the practical level of distribution network protection based on standalone 5G, we analyze the requirements of communication resource for distribution network protection firstly. Then, given the overall structure of 5G distribution network protection, a time synchronization scheme with higher reliability is proposed by means of homologous transmission of clock signal and data signal. At the same time, differential protection and regional protection are applied in an urban distribution network. The differences between the two protection methods in overhead lines and cables are analyzed. The results show that overhead lines are recommended for regional protection, and cables can be compatible with differential protection and regional protection.