Research on Key Parameters of Intelligent Substation Merging Unit Test

Abstract

Merging unit is an important part of the intelligent substation, whose performance is directly related to the safe and reliable operation of the substation intelligent. Therefore, it is needed to test the key parameters before the merging unit is installed to ensure that the merging unit can meet the requirements of the safe and stable operation of the intelligent substation. Aiming at some of the key considered issues in merging unit design, this paper proposed merging unit test performance parameters that should be paid attention to: the AC sampling time synchronization parameters, the switch time synchronization parameters, the output data precision parameters, the time delay parameters. Then this paper puts forward specific scheme design for these problems, which provide more references for the future merging unit testing.