输电线光纤纵差保护通道切换的探讨

Switching over of the communication channels for the current differential protection of transmission lines

阐述了输电线光纤纵联电流差动保护中增加备用通道的必要性 ,提出了光纤通道备用的几种方式 ,给出了输电线光纤纵差保护通道的手动切换和自动切换的几种方案。

This paper describes the importance of the back up channel in the optical fiber current differential protection of transmission lines. Some methods used to realize the channel back up of the optical fiber are presented. Several schemes of the channel switching over including manual and automatic one are also proposed in the paper.