Intelligent electric energy meter detection device

Abstract

The invention discloses an intelligent electric energy meter detection device, comprising a computer, an electric energy meter calibration unit, a direct current source control board, a direct currentsource, a stepping motor control board, a three-coordinate stepping motor and electromagnet. Through utilization of the computer, the direct current source is controlled, an exciting current is adjusted, and magnetic field strength program controlled adjustment is realized; and the three-coordinate stepping motor is controlled, arbitrary control over a position of the electromagnet relative to anelectric energy meter is realized, and a standard requirement is satisfied. Through utilization of the electric energy meter calibration unit, under effect of an external constant magnetic field of which program controlled adjustment can be carried out on magnitude, a position and a direction of the magnetic field, measurement error detection is carried out on a tested electric energy meter, anda test result is automatically judged. Automatic detection for an intelligent electric energy meter external constant magnetic field influence quantity test is realized. Influence of different magnetic fields on measurement of the electric energy meter is inspected comprehensively. Magnetic field strength test accuracy is high. A process is automatic. Operation is simple and convenient. Detectionefficiency is improved.

Description

technical field [0001] The invention relates to the technical field of power equipment testing, in particular to a detection device for an intelligent electric energy meter. Background technique [0002] The external constant magnetic field has a great impact on the measurement performance of the electric energy meter, mainly affecting the internal power module, current transformer, and sampling unit of the electric energy meter, resulting in inaccurate measurement. In recent years, it has been found that many unscrupulous users use strong magnets to interfere with the electric energy expression for the purpose of stealing electricity. When the magnet is close to the current transformer inside the meter, the power measurement value of the meter will change. In order to ensure the safe and reliable operation of the smart energy meter and accurate measurement, it is necessary to conduct an external constant magnetic field influence test on the energy meter. [0003] The natio...

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Problems solved by technology

The existing device mainly has the following disadvantages: 1. The external constant magnetic field that cannot meet the requirements of the national standard GB / T17215.321-2008 is applied to all accessible surfaces of the tested meter; 2. The test process has not been automated, and it is impossible to avoid Injury to the operator; 3. The position, size and direction of the external magnetic field cannot be adjusted, and the influence of different magnetic fields on the measurement of the electric energy meter cannot be tested

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