What is the specific scheme of substation time synchronization system?

The substation is equipped with a universal time synchronization system for the whole station, with high-precision clock source dual-channel configuration, and the standard timing signal of Beidou system is preferred for clock correction. The time synchronization system can output SNTP, IRIG-B (DC) (serial time B code), 1PPS (second pulse) and other signals. SNTP timing mode shall be adopted for the equipment in the station control layer. IRIG-B and 1PPS are used for equipment in the interval layer and the process layer, and IEC 6 1588 network time synchronization can also be used when conditions permit. The main clock source shall provide a communication interface conforming to DL/T 860 Substation Communication Network and System, and directly connect with the automation system to transmit information such as device operation, locked satellite number, synchronization or out-of-step status, etc. Arrive at the station control floor.