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High-precision rapid meter calibration method for multi-core electric energy meter

A high-precision, electric energy meter technology, applied in the measurement of electrical variables, instruments, measuring devices, etc., can solve the problems of low accuracy and poor calibration efficiency, and achieve high-precision calibration functions, improve efficiency, and flexible operation and algorithms.

Active Publication Date: 2021-07-02
SHENZHEN FRIENDCOM TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a multi-core electric energy meter for the current proofreading scheme of the metering core of the multi-core electric energy meter that cannot solve the technical problems of small current error and standard source jitter that lead to poor proofreading efficiency and low precision. High-precision fast meter calibration method

Method used

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  • High-precision rapid meter calibration method for multi-core electric energy meter
  • High-precision rapid meter calibration method for multi-core electric energy meter
  • High-precision rapid meter calibration method for multi-core electric energy meter

Examples

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Embodiment 1

[0061] like figure 1 As shown, a high-precision fast meter calibration method for a multi-core electric energy meter is used to calibrate the meter calibration module, metering core, and standard source of the meter calibration device respectively. The meter calibration method includes the following steps:

[0062] S1. Initialize the meter calibration module. Among them, the initialization parameters of the meter calibration module include the rated voltage U of the standard source n , rated current I b and error points;

[0063] S2. The meter calibration module initializes the output of the standard source to perform power calibration. This step S2 comprises the following steps:

[0064] S21, the output of the initialization standard source is: rated voltage U 1 =100%U n , rated current I 1 =100%I b , power factor PF=1.0;

[0065] S22, read the output voltage U of the standard source 1 , current I 1 and metering core output voltage U 2 , current I 2 ;

[0066] S...

Embodiment 2

[0102] A high-precision fast meter calibration device for a multi-core electric energy meter of the present invention is used to implement the meter calibration method described in Embodiment 1, and includes a meter calibration module, a metering core, and a standard source. Wherein, the meter calibration module is communicatively connected with the metering core and the standard source, and the metering core and the standard source are electrically connected, and the metering core is set in the multi-core electric energy meter. The meter calibration module can control the output of the standard source and read its output in real time; at the same time, it can also read the output of the metering core in real time. In this embodiment, the meter calibration module is a storage medium readable by the terminal, and a program that can be run on the terminal is stored on the storage medium. When the program is executed, the relevant steps of the meter calibration method can be imple...

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Abstract

The invention provides a high-precision rapid meter calibration method for a multi-core electric energy meter, relates to the technical field of sensing communication optimization, and solves the technical problems of poor calibration efficiency and low precision caused by low current error and standard source jitter of the calibration scheme for the metering core of the multi-core electric energy meter in the prior art. The method comprises a meter calibration module, the metering core and a standard source. The meter calibration method comprises the steps that initialization setting is carried out on the meter calibration module; the meter calibration module initializes the output of the standard source and performs power calibration; the meter calibration module modifies the output of the standard source and performs power phase calibration; the meter calibration module modifies the output of the standard source and performs power offset calibration; and the meter calibration module modifies the output of the standard source and carries out current bias calibration. The meter calibration method is automatically completed by the meter calibration module; and the method has a high-efficiency and high-precision calibration function.

Description

technical field [0001] The invention relates to the technical field of electric power metering equipment, in particular to a high-precision and fast meter calibration method for a multi-core electric energy meter. Background technique [0002] As the unit of electricity measurement, the accuracy of the metering core must be guaranteed, but in reality, because the components used in the meter cannot guarantee the accuracy of each meter, each metering core always has certain differences, and it needs to be checked before leaving the factory. Each meter is calibrated for accuracy. [0003] The difference between the multi-core modular energy meter and the integrated smart energy meter is that the multi-core modular energy meter adopts a multi-core modular design, which is mainly composed of a metering core, a management core, and an extended function module. my country adopts a dual-core smart meter solution based on the IR46 (International Recommendation46, IR46) standard for...

Claims

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Application Information

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IPC IPC(8): G01R35/04
CPCG01R35/04
Inventor 梁肇森黄卫明黄旭均王蕾
Owner SHENZHEN FRIENDCOM TECH DEV
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