Comprehensive calibrating device and calibrating method for alternating-current and direct-current electric energy meter

Abstract

The invention discloses an alternating current and direct current electric energy meter comprehensive calibrating device and calibrating method, and belongs to the technical field of electric energy meter calibration. An existing verification mode is not high in automation degree, due to the fact that numerical values of a standard voltage source module and a standard current source module need to be adjusted in the verification process, the manual requirement is high, and errors in the verification process can be increased due to manual operation. According to the comprehensive calibrating device for the alternating-current and direct-current electric energy meters, a plurality of output source modules are integrated together to complete calibration of the alternating-current electric energy meters and the direct-current electric energy meters at the same time, one device can complete calibration of various electric energy meters, the calibrating efficiency is effectively improved, the manufacturing cost is reduced, the user experience is good, and the comprehensive calibrating device is convenient to popularize and use. Furthermore, a microprocessor is utilized to control the accurate output of each output source module, and can be connected with a computer, so that the automatic verification of the electric energy meter can be realized, the automation degree of the verification mode is effectively improved, the requirement on manpower is reduced, and the precision in the verification process is effectively improved.

Description

technical field [0001] The invention relates to a comprehensive verification device and a verification method for an AC and DC electric energy meter, belonging to the technical field of electric energy meter verification. Background technique [0002] Due to the country's vigorous development of the electric vehicle industry, various electric vehicle projects are booming, and the number of charging piles is increasing day by day. The charging piles are currently divided into AC charging piles and DC charging piles. The electric energy meter used in the AC charging pile is an AC electric energy meter, and the DC electric energy meter is used in the DC charging pile. The accurate charging of the charging pile cannot be separated from the inside of the charging pile The accuracy of the electric energy meter in the charging pile is very necessary under the background of the compulsory verification of the national charging pile. [0003] The current identification scheme for the...

AI Technical Summary

Problems solved by technology

[0005] 1. The automation degree of the verification method is not high, and the manual requirements are relatively high, because the verification process needs to adjust the values ​​of the standard voltage source module and the standard current source module. Affected by various factors, manual operation will lead to an increase in the error of the verification process

[0006] 2. The verification of DC energy meters requires standard DC voltage source modules, standard DC current source modules, and the verification of AC energy meters requires standard AC voltage source modules and standard AC current source modules. There are too many devices involved, inconvenient operation, and high manufacturing costs.

[0007] 3. The existing verification methods lack pulse input and output functions and clock time synchronization functions, which cannot meet more verification requirements of electric energy meters

Images