Three-phase AC electric energy meter verification system and method

Abstract

The invention discloses a three-phase AC electric energy meter verification system which includes a main control unit, a power unit, a standard electric energy meter unit, and at least one verification unit. Each verification unit includes an electric energy meter type identification unit, a tested electric energy meter and an error calculation unit. The power unit is used for providing power forthe tested electric energy meters and the standard electric energy meter unit. The standard electric energy meter unit is used for providing a standard three-phase three-wire electric energy pulse signal and a standard three-phase four-wire electric energy pulse signal. A three-phase AC electric energy meter verification method is also provided. According to the three-phase AC electric energy meter verification system of the invention, the type of an electric energy meter is automatically identified through the electric energy meter type identification units, and the verification efficiency ofthree-phase AC electric energy meters is improved. According to the three-phase AC electric energy meter verification method, the verification process is completed by automatically judging the type of each tested electric energy meter, the verification efficiency of three-phase electric energy meters is improved, and intelligent verification is realized.

Description

technical field [0001] The invention relates to the field of electric energy meter verification, in particular to a three-phase AC electric energy meter verification system and method. Background technique [0002] Generally, three-phase AC energy meters are divided into three-phase three-wire AC energy meters and three-phase four-wire AC energy meters. Due to their different wiring methods, the measurement signals for three-phase three-wire AC energy meters are also different. It is a three-phase three-wire signal; while the measurement signal of a three-phase four-wire AC watt-hour meter is a three-phase four-wire signal; therefore, at present, when testing a three-phase AC watt-hour meter, it is necessary to rely on manual identification of the type of the measured watt-hour meter (three-phase Three-phase three-wire AC electric energy meter or three-phase four-wire AC electric energy meter), and then select the corresponding measurement signal to connect to the three-phas...

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Problems solved by technology

[0002] Generally, three-phase AC energy meters are divided into three-phase three-wire AC energy meters and three-phase four-wire AC energy meters. Due to their different wiring methods, the measurement signals for three-phase three-wire AC energy meters are also different. It is a three-phase three-wire signal; while the measurement signal of a three-phase four-wire AC watt-hour meter is a three-phase four-wire signal; therefore, at present, when testing a three-phase AC watt-hour meter, it is necessary to rely on manual identification of the type of the measured watt-hour meter (three-phase Three-phase three-wire AC electric energy meter or three-phase four-wire AC electric energy meter), and then select the corresponding measurement signal to connect to the three-phase AC electric energy meter and verify it; the verification process for the three-phase AC electric energy meter requires manual participation, and the verification efficiency is low

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