Analog-digital integrated standard power source and standard electronic energy meter value tracing system

Abstract

The embodiment of the invention discloses an analog-digital integrated standard power source and standard electronic energy meter value tracing system. After an analog-digital integrated standard power source passes through a D / A conversion module and a power amplifier to verify a traditional electric energy meter through an analog output interface and can also pass through a signal conditioning module, an A / D conversion and a protocol conversion module to verify an electronic energy meter through a digital output interface, and the flexibility and universality are high; meanwhile, due to the fact that signals output by the analog output interface and the digital output interface are from the same power source, the traditional standard electric energy meter with the low uncertainty can be connected through the analog output interface, the mode that the digital output interface is connected with the standard digital electric energy meter is adopted for performing value tracing on the standard digital electric energy meter through the traditional standard electric energy meter with the low uncertainty, and the technical problem that a current standard digital power source cannot be used for value tracing of the electronic energy meter and is low in universality is solved.

Description

technical field [0001] The invention relates to the field of electrical instruments, in particular to a modulus-digital integrated standard power source and a standard digital electric energy meter value traceability system. Background technique [0002] The digital substation based on IEC61850 is being promoted and applied nationwide, and the application of digital energy meters in digital substations is also becoming more and more extensive. The input interface of the digital watt-hour meter is different from that of the traditional watt-hour meter. The verification method of the traditional watt-hour meter cannot be used to verify the digital watt-hour meter. It is necessary to use a standard digital power source to verify the digital watt-hour meter. [0003] However, when the current standard digital power source checks the digital electric energy meter, because the IEC61850 data frame output by the standard digital power source cannot be compared with the external actu...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a modulus-digital integrated standard power source and a standard digital electric energy meter value traceability system, which solves the technical problems that the current standard digital power source cannot be used for the value traceability of the digital electric energy meter and has low versatility

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