Error self-checking three-phase electric energy meter and measuring system and method thereof

A three-phase electric energy meter and electric energy measurement technology, applied in the field of smart meter measurement, can solve the problems of heavy workload and high cost of flow sensors, achieve the effect of weakening the influence of multi-collinearity, improving the efficiency and accuracy of calculation

Pending Publication Date: 2022-03-08
武汉国测数据技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem caused by this approach is that the workload of flow sensor error calibration is huge and the cost is too high

Method used

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  • Error self-checking three-phase electric energy meter and measuring system and method thereof
  • Error self-checking three-phase electric energy meter and measuring system and method thereof
  • Error self-checking three-phase electric energy meter and measuring system and method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0066] A three-phase watt-hour meter with error self-checking, such as figure 1As shown, the error self-checking three-phase electric energy meter includes three groups of three-phase electric energy shunting structures of 1 and 2, and each electric energy shunting structure constitutes a three-phase electric energy system conforming to the relationship of power conservation, wherein each group is divided into 1 In the three-phase electric energy shunting structure of 2, electric energy sensing units are respectively arranged on one general and two sub-pipelines, and the electric energy sensing units include a master meter metering module and an electric energy metering module connected in series with the user's electric energy meter The electric energy metering module connected in series with the electric energy meter of the adjacent user is connected in series with the error reference standard device on any pipeline of the three-phase electric energy shunt structure of each g...

Embodiment 2

[0074] The present invention also provides an electric energy measurement system composed of three-phase electric energy meters with error self-verification. The electric energy measurement system includes at least two stages of error self-verification three-phase electric energy meters; The three-phase electric energy meter consists of a master meter metering module on the inflow side, two electric energy metering modules connected in series with the electric energy meter of the user on the outflow side, and electric energy metering modules connected in series with the electric energy meter of the adjacent user; in a single-phase In the three-way array structure electric energy sensor, the electric energy of the general meter metering module, the electric energy metering module connected in series with the electric energy meter of the user and the electric energy metering module connected in series with the electric energy meter of the adjacent user constitutes a relative elect...

Embodiment 3

[0089] A method for measuring an electric energy measuring system composed of an error self-checking three-phase electric energy meter, the measuring method comprising:

[0090] Designate or establish an error reference standard device in the electric energy measurement system and give it a reference error value;

[0091] Collecting the original measurement data of the three-phase electric energy sensors on all input branches and output branches in the electric energy measurement system, and the original measurement data of the error reference standard device;

[0092] For the 1:2 tee array where the error reference standard device is located, use the mathematical model established by the relative electric energy conservation relationship to calculate the total meter measurement module in the 1:2 tee array where the error reference standard device is located , The reference measurement error value of the electric energy metering module connected in series with the electric ene...

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Abstract

The invention relates to an error self-checking three-phase electric energy meter and a measuring system and method thereof. Wherein a mathematical model is established by utilizing an electric energy conservation relation of an electric energy system, and electric energy measurement errors of electric energy sensing units respectively arranged on an incoming line pipeline and a branching pipeline of the single-phase three-way array structure electric energy sensor are calculated according to electric energy data detected by the electric energy shunting structure and the error reference standard device; and compensating the newly measured electric energy data by using the calculated error, continuously iteratively calculating the measurement error of the electric energy sensing unit, and obtaining error-free or equal-error data of the single-phase three-way array structure electric energy sensor. And the errors of the three-phase electric energy sensors in each electric energy array are calculated respectively, so that the multi-collinearity influence of electric energy data calculation caused by similar electric energy using habits of users is weakened, and the calculation efficiency and the calculation precision are improved.

Description

technical field [0001] The invention belongs to the technical field of smart meter measurement, and more specifically relates to an error self-checking three-phase electric energy meter and a measurement system and method thereof. Background technique [0002] At present, a large number of used meters, such as electricity meters, water meters, gas meters or other flow meters, cannot be dismantled back to the laboratory to detect flow errors because the usage in real life is too large. There is an urgent need to find technologies and methods for online detection of these flow sensor errors; [0003] For mathematical algorithms, when the flow measurement system is relatively large, there are many flow sensors included in the flow measurement system, and the similarity of user flow consumption habits will lead to multicollinearity problems in flow meter data. Calculation accuracy is affected. [0004] The traditional method is to install a flow sensor on the pipeline or node ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R22/06G01R35/04
CPCG01R22/06G01R22/061G01R35/04
Inventor 侯飞侯铁信金鹏汪毅钟晓清郑华刘春华段愿朱政
Owner 武汉国测数据技术有限公司
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