Synchronous Tracing Real Load Verification Technology for Digital Input Watt-hour Meter

With the gradual development of electronic transformer and smart substation, the detection technology of electric energy meter with digital input has become a bottleneck problem in the development of digital substation. At present, most of the digital input watt-hour meters in digital substations adopt off-line detection or no detection, and off-line detection has no corresponding traceability support. Based on the technology of digital quantity input electric energy meter in the existing digital substation, this paper proposes a real load digital input watt-hour meter detection scheme that operates online. And a scheme of digital input watt-hour meter testing equipment compatible with various protocols and synchronous traceability online real load verification technology is proposed.