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Method for quick calibration of error of electric energy meter

A calibration method and technology for electric energy meters, which are applied in the measurement of electrical variables, measuring devices, instruments, etc., can solve the problems of low meter calibration efficiency and large error of electric energy meters, and achieve high calibration accuracy, wide application range, and calibration efficiency. high effect

Inactive Publication Date: 2016-11-23
WAHLAP TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is to overcome the problems of low calibration efficiency and large errors of the energy meter after calibration in the prior art, and to provide an energy meter with high calibration efficiency and high calibration accuracy Error Quick Calibration Method

Method used

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  • Method for quick calibration of error of electric energy meter
  • Method for quick calibration of error of electric energy meter
  • Method for quick calibration of error of electric energy meter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 1 The illustrated embodiment is a fast calibration method for an electric energy meter error, comprising the following steps:

[0042] Step 100, power on the energy meter

[0043] Hang the watt-hour meter on the meter calibration platform of model NZ2031C, and use the meter calibration platform to add rated voltage and rated current to the watt-hour meter;

[0044] Step 200, read the power of the meter calibration station and the power of the electric energy meter

[0045] The computer sends a command to read the power of the electric energy meter to the electric energy meter, and the computer reads the power P of the meter calibration station t and energy meter power P b ;

[0046] The computer sends a command to read the power of the electric energy meter to the electric energy meter, and the main processor chip of the electric energy meter is turned off and interrupted;

[0047] The main processor chip of the energy meter samples and measures the ...

Embodiment 2

[0061]Include all step parts of embodiment 1 in embodiment 2, the electric energy meter of embodiment 2 comprises ATM90E32AS metering chip; The electric energy gain A ' calculation step of the step 400 of embodiment 1 is replaced by following steps:

[0062] The computer reads the power gain A of the ATM90E32AS metering chip, and uses the formula

[0063] Calculate the power gain A'; Complementary is a complement operator.

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Abstract

The invention discloses a method for quick calibration of the error of an electric energy meter. The method comprises the steps that the electric energy meter is hung on a meter calibration table, and nominal voltage and nominal current are applied to the electric energy meter by means of the meter calibration table; a computer sends an electric energy meter power reading instruction to the electric energy meter and reads meter calibration table power Pt and electric energy meter power Pb; the computer calculates the error of the electric energy meter err% by means of the formula shown in the description; the computer calculates electric energy gain A' by means of the error err% and sends A' to the electric energy meter, and A' replaces electric energy gain A in the electric energy meter. The method has the advantages that meter calibration efficiency is high, meter calibration precision is high, and manufacturing cost is reduced.

Description

technical field [0001] The invention relates to the technical field of electric energy meter calibration, in particular to a fast error calibration method for electric energy meters with high meter calibration efficiency and high meter calibration accuracy. Background technique [0002] At present, the calibration method of the high-precision electric energy meter of the electric meter manufacturer generally adopts the error calibration method, that is, the error of the meter calibration station is read after the electric energy meter emits a pulse, and the compensation amount is calculated and then written into the electric energy meter. This calibration method has the disadvantages of long calibration time and low production efficiency. [0003] For energy meters with low precision requirements, power calibration is usually used, that is, reading the power of the energy meter and the power of the meter calibration station, calculating the compensation amount and writing it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/04
CPCG01R35/04
Inventor 马小辉潘玉刚姚徐旭
Owner WAHLAP TECH CO LTD