Abstract: 5G has broad application prospects in smart grids, which will greatly help improve grid intelligence and unmannedness. In addition, as an industry with high security requirements, security has become a threshold for the wide-scale application of 5G in the smart grid industry and must be prioritized. This paper analyzes new security risks and challenges brought by new technologies and features of 5G networks, proposes an overall 5G security framework for smart grids based on the security requirements of electric power features, and describes in detail the implementation of major security technologies, especially the slicing technology in 5G grids. It can meet power regulation and security requirements and build a better power 5G application environment.

Key words: smart grid, 5G, security, slice, isolation, authentication, Framework, Security Management

摘要： 5G在智能电网中有广阔的应用前景，对于提升电网智能化、无人化有巨大帮助。同时作为安全要求很高的行业，安全成为5G在智能电网行业大范围应用的门槛，必须加以优先解决。本文分析了5G网络的新技术、新特征带来了新的安全风险与挑战，针对电力特色的安全要求，提出了智能电网5G安全总体框架，详细描述了各项主要安全技术实现，特别是切片技术在5G电网中的应用，可以满足电力监管和自身安全需求，打造更好的电力5G应用环境。

关键词: 智能电网, 5G, 安全, 切片, 隔离, 认证, 框架, 安全管理