摘要：This paper mainly aims at solving the problems of sampled data synchronization in digital substation based on Filed Programable Gate Array (FPGA). Compared with traditional substations, the design achieves data synchronization without connecting an external clock. Synchronization algorithm is based on Newton interpolation algorithm. The system consists of multi-channel data sampling module, synchronization module, Ethernet module etc. The design realizes the concept of modular design with FPGA processor, ensuring that each sub-module gets parallel execution. It is verified that speed is improved to ns level which is difficult to achieve in current systems. Finally, software simulations and hardware tests prove the accuracy and efficiency of the design. Therefore, the design is of great significance for the automation level in smart grid, especially for the enhancement and development.
关键词：data synchronization system;Newton interpolationalgorithm;merging unit (MU);Filed Programmable Gate Array (FPGA)
