The paper investigated the technology system and key technologies of igh-precision time-frequency transmission in wide area based on ground optical fiber communication network

analysed and summarized implementation mode

technical means

the difference and applicable scope of network application and development situation for the fiber time and frequency transfer system

combining with the actual demand of power system for wide area and high precision time synchronization. this paper gives the networking application scheme and suggestions for wide area high-precision time and frequency synchronization system suitable for power system

and provides technical support and guidance for the planning

design

construction and operation and maintenance of wide area high-precision time and frequency synchronization system of power system.