Method and device for measuring merging unit time characteristics

The invention discloses a method for measuring merging unit time characteristics. The method is characterized by comprising steps that: first step, synchronization of the merging unit and a measuring device is realized through a clock synchronization signal; second step, an SV message of the merging unit is received by the measuring device, and a standard interval of the SV message is acquired; third step, a time difference of arrival time of the SV message to the measuring device and the clock synchronization signal is measured by the measuring device; fourth step, sending interval jitter of the SV message is locked by the measuring device; fifth step, rated sampling time-delay of the merging unit is acquired; and sixth step, discreteness of the merging unit for sending the SV message is acquired. Through the method and the device, problems that a merging unit time characteristic measuring system in an intelligent transformer station is complex and a measuring method is tedious are solved, measuring efficiency and measuring accuracy are improved, so an effective method is provided for a large scale test on the intelligent transformer station after popularization construction.