Distributed adaptive clock synchronization scheme for smart grid based on system stability analysis

Aiming at services such as nearby consumption and flexible interaction of new loads, it is necessary to achieve higher precision clock synchronization of local equipment, and the public network transmission delay fluctuates randomly, which cannot meet the corresponding accuracy requirements. In order to get rid of the limitations brought by public network transmission, distributed clock synchronization replaces the centralized timing of the master station through information exchange between nodes to achieve higher precision clock synchronization. However, in the process of distributed synchronization, a large amount of information will be exchanged between key nodes of the link and their neighbors, but the concurrent transmission capacity of key nodes such as dedicated power gateways and centralized coordinators (CCOs) is limited, which is difficult to meet the corresponding communication requirements. In order to solve the above problems, this paper proposes a time-triggered distributed synchronization scheme based on node priority, which can meet the requirements of high-precision synchronization and reduce the transmission burden of link aggregation nodes such as power dedicated gateways and CCOs.