With the breakthrough development of wireless communication technology, modern wireless networks have shown significant advantages in carrying key business of power systems with their non-line-of-sight transmission, rapid deployment capability and disaster resilience. Research shows that a highly reliable data transmission mechanism with millisecond-level end-to-end delay can fully meet the stringent requirements of line differential protection for communication channels. This paper proposes to deeply integrate wireless communication delay tracking dynamic compensation synchronization technology, wireless differential protection frequency hopping technology with active warning, information data reliability identification technology, and health assessment technology for communication link perception and status warning into the power communication network architecture to build a protection information transmission system based on wireless links. This solution not only provides multi-dimensional redundant channels for backbone network protection, but also innovatively designs flexible and elastic transmission paths for distribution network protection systems. Experiments show that it can effectively improve the reliability of protection channels, while reducing the investment cost of communication infrastructure, and achieving coordinated optimization of safety benefits and economy.