Testing method for legal metering part of double-core electric energy meter

Abstract

The invention relates to a technical field, and especially relates to a testing method for a legal metering part of a double-core electric energy meter. The method comprises the steps that a detection table body receives an instruction of a PC, and outputs a signal to a detected electric energy meter; the detection table body obtains the metering data of the legal metering part of the detected electric energy meter under a plurality of testing conditions, and calculates error data according to metering data; the PC stores the error data, and carries out the fitting of an error curve according to the error data; the PC compares the error curve with a calibration standard, and obtains a comparison result. Because the detection table body calculates error data according to metering data, the PC stores the error data, and carries out the fitting of the error curve according to the error data, compares the error curve with the calibration standard, and obtains the comparison result. The method can detect the accuracy of independent operation of the legal metering part of the detected electric energy meter under the interference of various types of testing conditions.

Description

technical field [0001] The invention relates to the technical field, in particular to a testing method for the legal metrology department of a double-core electric energy meter. Background technique [0002] At present, my country's electric energy meter is designed in one piece, that is, the metering part and the non-metering part do not require independent work. This kind of energy meter has relatively solid requirements for software and hardware. Once a hardware or software failure occurs, the only way to replace the entire meter is to ensure the smooth progress of power metering. And for the safety consideration of preventing tampering with the energy meter program, the online upgrade of the energy meter software is not allowed. In the future competitive electricity market, out of the consideration of maximizing the interests of different electricity selling entities, the multi-rate electricity price day time division strategy formulated is more targeted, diverse and re...

AI Technical Summary

Problems solved by technology

At the same time, with the gradual penetration of user experience concepts, there are more and more functional requirements for electric energy meters. At present, if you want to expand and upgrade functions, you can only implement it by installing new meters, which not only wastes resources, but also increases manpower and material cost

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