A repeatable test method for automatic verification system of direct-in three-phase smart energy meter

Abstract

The invention relates to a repeatability test method for a straight-in type three-phase intelligent electric energy meter automation calibration system. Calibration process steps on an automatic assembly line calibration system are as follows: (1) preparation that information of a standard electric energy meter is recorded into the calibration system, (2) meter installation that a standard electric energy meter tray is placed at a binding position and that the standard electric energy meter tray and normal-task electric energy meters are randomly mixed and then flow into an automatic calibration line body, (3) binding that an assembly line server binds a bar code number of the standard electric energy meter and information of the tray according to a preset scheme, (4) testing that the automatic line executes a test according to a preset test scheme, (5) meter detachment that a PLC automatically identifies the standard electric meter on the tray according to the binding information, and the standard electric energy meter tray circularly executes process of the step (3), the step (4) and the step (5), and (6) data processing that calibration data are led out. The repeatability test method has the advantages of reasonable design, convenient operation, high accuracy and high reliability; period check for an electric energy metering device or electric energy metering instrument equipment is achieved; and an electric energy value can be effectively guaranteed to be transmitted accurately and reliably.

Description

technical field [0001] The invention belongs to the fields of electric measurement and instrumentation, in particular to a repetitive test method for an automatic verification system of a direct-in type three-phase intelligent electric energy meter. Background technique [0002] Electric energy has become an indispensable and important energy source for the survival and development of human society. Almost all human activities are closely related to electricity, and electric energy meters are direct measuring instruments for detecting electric energy usage standards. How to ensure the calibration of electric energy meters The accuracy and efficiency of the test, and efforts to improve the calibration efficiency of the electric energy meter have become problems that need to be solved urgently by the measurement and testing departments at all levels. [0003] In order to maintain the reliability of electric energy metering devices and test equipment, and ensure the accuracy an...

AI Technical Summary

Problems solved by technology

At present, the method of checking during the period is to use the online detection of the electric energy meter to be tested. Dozens to hundreds of detection equipment are installed on the detection line to meet the online detection requirements of a large number of electric energy meters. The detection accuracy of the multiple detection equipment itself is calibrated It has become another difficult problem to ensure the detection accuracy of electric energy meters. Because the existing equipment itself is large in size, heavy in weight and difficult to move, it is necessary to manually carry the calibration equipment to disassemble, connect, and calibrate the testing equipment, often every calibration cycle Long time, heavy manual workload and low work efficiency

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