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Research on advanced metering infrastructure time synchronization based on NTP

The Advanced Metering Infrastructure (AMI) is an automatic electric energy information collection system which integrates microelectronic, communication and embedded computer technology. The role of AMI is becoming more and more important in power system with the smart grid construction. In AMI, the time information is not only an important indicator of the system, its accuracy will also restrict the time of use (TOU) power price implementation , and affect the power demand side management efficiency. In order to improve the time accuracy of the AMI, this paper proposes a network time protocol (NTP) time synchronization theory based on asymmetric coefficient modification, using client/server mode and broadcast mode to synchronize the acquisition terminal and the smart meter of AMI from top to bottom respectively. Finally, the designed time synchronization system can effectively improve the accuracy and efficiency of AMI.