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, which is applied in the field of smart meter measurement, can solve the problems of high cost and heavy workload of flow sensors, etc., and achieve the effects of weakening the influence of multi-collinearity and 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
Comparison scheme
Effect test

Embodiment 1

[0065] A three-phase watt-hour meter with error self-checking, such as figure 1 As 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 ...

Embodiment 2

[0075] The present invention also provides a three-phase electric energy measurement system composed of an error self-checking three-phase electric energy meter. The error self-checking three-phase electric energy meter as described in Embodiment 1 is placed in a household electric meter box, including: each One phase contains at least two stages of 1-to-2 single-phase three-way array structure, wherein each stage of one-to-two three-way array structure includes a total meter metering module on the inflow side, and two on the outflow side The electric energy meter of the user and the electric energy meter of the adjacent user, wherein, the total meter measurement module is used to measure the total electric energy of the first adjacent user and the adjacent user; an electric energy sensing total meter unit and 2 on the inflow side A power sensor sub-meter unit located on the outflow side constitutes a relative power conservation relationship;

[0076] Among them, for the adjac...

Embodiment 3

[0090] A method for measuring a three-phase electric energy measurement system composed of an error self-checking three-phase electric energy meter. The electric energy system composed of a three-way array structure includes: at least two stages of a three-way array structure of 1 to 2, wherein each stage The 1-to-2 tee array consists of a power sensor master meter on the inflow side and 2 sub-meter units on the outflow side, a power sensor master meter on the inflow side and 2 sub-meter units on the outflow side Relative energy conservation relationship;

[0091] Among them, for the adjacent two-level 1-to-2 three-way array structure, the adjacent user electric energy meter on the outflow side in the upper-level 1-to-2 three-way array structure is the next-level 1-to-2 three-way array The structure is located on the outflow side of the electric energy meter of the user, so that the electric energy data of each adjacent user in the existing electric meter box can be connected ...

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Abstract

The invention discloses an error self-checking three-phase electric energy meter and a measuring system and method thereof. Establishing a mathematical model by utilizing an electric energy conservation relation of an electric energy system, and calculating total meter metering modules arranged on two total pipelines of the single-phase three-way array structure according to electric energy data detected by the single-phase three-way array structure and the error reference standard device, the method comprises the following steps of: calculating a total meter metering module, and electric energy measurement errors of a user electric energy meter and an adjacent user electric energy meter which are respectively arranged on two branch pipelines of a single-phase three-way array structure, compensating the newly measured electric energy data by using the calculated errors, continuously iteratively calculating the measurement errors of the total meter metering module, the user electric energy meter and the adjacent user electric energy meter, and calculating the measurement errors of the total meter metering module, the user electric energy meter and the adjacent user electric energy meter. And error-free or equal-error data of the electric energy sensor with the three-way array structure are obtained. The multi-collinearity influence of flow data calculation caused by similar flow 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 flow sensors, such as electricity meters, water meters, gas meters or other flow meters, cannot be dismantled back to the laboratory to detect flow errors because they are used too much in real life. 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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