适用于5G通道的输电线路差动保护方法

Transmission Line Differential Protection Method Suitable for 5G Channel

现有输电线路差动保护只能使用有线通道,5G通信网络为输电线路差动保护通道提供了一种无线通道。本文从帧结构、网络安全、采样同步等方面研究了适用于5G通道的输电线路差动保护解决方案,提出了适用于5G通道的线路差动保护方法。并提出了一种自适应切换的通道同步监视方法:当光纤通道正常时,采用光纤通道监视5G通道的同步状态;当光纤通道异常时,采用电气量监视5G通道的同步状态。实验验证表明,本文提出的方法可以实时监视5G差动保护的同步状态,适用于5G通道,提高了差动保护通道的选择性。

The existing transmission line differential protection can only use wired channel, and 5 G communication network provides a wireless channel for transmission line differential protection channel. This paper studies the solution of transmission line differential protection suitable for 5 G channel from the aspects of frame structure, network security and sampling synchronization, and puts forward the line differential protection method suitable for 5 G channel. An adaptive switching channel synchronization monitoring method is proposed: when the fiber channel is normal, the fiber channel is used to monitor the synchronization state of 5 G channel;When the fiber channel is abnormal, the electrical quantity is used to monitor the synchronization status of 5 G channel. Experimental results show that the proposed method can monitor the synchronization state of 5 G differential protection in real time, is suitable for 5 G channel, and improves the selectivity of differential protection channel.