A novel FPGA-based method to design the merging unit following IEC 61850

Based on a brief analysis of the international standard for the interface between the electronic transducer and the protective device, this paper points out that the design of the merging unit is the key clement in implementing the interface. This paper introduces the function model of merging unit. With respect to the synchronization and interface problems in designing the merging unit according to the IEC 61850-9-1 standard, this paper proposes a new method using field programmable gate array (FPGA) to implement the main functions of merging unit.