Direct-current standard source device for detecting metering errors of electric energy meter

Abstract

The embodiments of the invention disclose a direct-current standard source device for detecting metering errors of an electric energy meter. The direct-current standard source device comprises a man-machine interaction module, a data processing module, a power source module and a data acquisition module; when a direct-current power source is outputted to a to-be-detected meter, the man-machine interaction module receives a preset expected electricity quantity; the data processing module processes and converts the expected electricity quantity so as to obtain an expected electricity quantity values; after the power source module outputs an actual electricity quantity to the to-be-detected meter according to the expected electricity quantity value, the data acquisition module acquires the actual electric quantity; the actual electricity quantity is processed and converted through the data processing module, so that an actual electricity quantity value is obtained; and if the electricityquantity difference value of the expected electricity quantity value and the actual electricity quantity value exists, the power source module adjusts the outputted actual electricity quantity. According to the direct-current standard source device disclosed by the invention, a closed-loop feedback structure is adopted; the actual electricity quantity outputted by the power source module in real time through data acquisition and processing, and therefore, the influence of ripple current can be effectively eliminated, and the detection accuracy of the metering errors of the electric energy meter can be ensured.

Description

Technical field [0001] This application relates to the technical field of electric energy meter detection equipment, and in particular to a direct current standard source device for detecting measurement errors of electric energy meters. Background technique [0002] The electric energy meter is an instrument used to measure electric energy. The correct electric energy measurement is of great significance for calculating the generation and supply of electric energy, comprehensively balancing and evaluating the economic and technical indicators of the power system, and saving energy. In order to ensure the accuracy of the measurement, the electric energy meter is required. Measurement errors are detected so that corresponding measures can be taken to eliminate measurement errors. [0003] The steps for detecting the measurement error of the electric energy meter include: firstly, the electric energy meter is provided with a direct current that is consistent with the working electric...

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Problems solved by technology

[0005] In order to solve the technical problem that there is a gap between the amount of electricity actually provided by the DC power supply device to the electric energy meter and the amount of electricity expected to be provided by the ripple current, thereby affecting the accurate detection of the measurement error of the electric energy meter, this application discloses through the following embodiments A DC standard source device for detecting the measurement error of electric energy meter

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