Master-slave clock synchronization method and system

Abstract

The present invention provides a master-slave clock synchronization method and system, the master clock sends the first message to the slave clock, the slave clock feeds back the second message to the master clock, and records the time t when the first message leaves the master clock during this process 1 , the time t when the slave clock receives the first message 2 , the second message leaves the slave clock time t 3 and the time t when the master clock receives the second message 4 , calculate the path delay and clock skew between the master clock and the slave clock based on these recorded times, perform exponential smoothing on the path delay and clock skew, and synchronize the master clock and the slave clock according to the processing results. During the whole process, the path delay and clock offset between the master and slave clocks are calculated, and the path delay and clock offset results are optimized by exponential smoothing processing. The optimized data is more in line with the real situation and has adaptability, and can automatically adjust Time and frequency modulation to achieve high-precision master-slave clock synchronization.

Description

technical field [0001] The invention relates to the technical field of clock synchronization, in particular to a master-slave clock synchronization method and system. Background technique [0002] Clock synchronization is also called "clocking". In a network built by multiple devices, master-slave clock synchronization is very important. Most devices have their own clock signals. If these devices cannot be synchronized with high precision, it will inevitably affect the coordination between devices. [0003] Taking the microgrid as an example, the microgrid is a small power generation and distribution system composed of distributed power sources, energy storage devices, energy conversion devices, related loads, monitoring and protection devices. It is an autonomous system capable of self-control, protection and management. The system has great potential in solving energy depletion, environmental protection problems and power quality. The stable operation of the microgrid pu...

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide a simple master-slave clock synchronization method and system with high synchronization accuracy for the problems of complex master-slave clock synchronization methods and low synchronization accuracy.

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