基于5G通信的配电网差动保护技术研究

现代配电网大量分布式电源的接入,使得传统三段式过流保护整定困难。基于光纤通信的差动保护建设成本高,难以大范围应用。5G通信的大带宽、低延时、高可靠特点为配电网差动保护业务提供了一种新的通信方式。通过分析5G通信承载配电网差动保护的技术手段,结合配电网差动保护对通信的技术要求,提出一种基于5G无线通信通道、UDP协议SV采样值报文格式、北斗卫星导航系统授时采样同步法的配电网差动保护方案。该方案在多个5G通信环境进行了验证,差动保护性能满足配电网系统要求。

Research on differential protection of a distribution network based on 5G communication

The access of distributed power in a modern distribution network makes it difficult for the traditional three-section current protection to meet the differential protection needs for the laying of optical fiber infrastructures, and its high construction cost makes its wide application difficult. The extreme data rates, ultra-low latency, and ultra-high reliability of 5G communication provide a new communication way for differential protection in a distribution network. This paper analyzes the technologies of 5G communication for differential protection, and the requirements for communication, and then proposes a solution based on a 5G wireless communication channel, SV sampling value message over UDP protocol, and sampling synchronization with a Beidou satellite navigation system. This solution has been verified in multiple 5G communication environments, showing that its differential protection performance meets distribution network requirements.