CN114152806B

CN114152806B - Electric energy sensor with three-way array structure and measurement system and method formed by same

Info

Publication number: CN114152806B
Application number: CN202010935142.2A
Authority: CN
Inventors: 侯飞; 侯铁信; 金鹏; 汪毅; 钟晓清; 郑华; 刘春华; 段愿; 朱政
Original assignee: Wuhan National Survey Data Technology Co ltd
Current assignee: Wuhan National Survey Data Technology Co ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2024-03-15
Anticipated expiration: 2040-09-08
Also published as: CN114152806A

Abstract

The invention discloses an electric energy sensor with a three-way array structure and a measurement system and method formed by the same. And establishing a mathematical model by utilizing the electric energy conservation relation of the electric energy system, calculating electric energy measurement errors of electric energy sensing units respectively arranged on 1 inlet pipeline branch and 2 outlet pipeline branches of the electric energy sensor of the three-way array structure by utilizing electric energy data detected by the electric energy sensor of the three-way array structure and the error reference standard device, and continuously and iteratively calculating the measurement errors of the electric energy sensing units by utilizing the calculated errors to compensate the newly measured electric energy data to obtain the electric energy sensor of the three-way array structure without errors or equal errors. The method reduces the multiple collinearity influence of electric energy data calculation caused by the habit similarity of using electric energy of users, and improves the calculation efficiency and calculation accuracy.

Description

Electric energy sensor with three-way array structure and measurement system and method formed by same

Technical Field

The invention belongs to the technical field of intelligent meter measurement, and particularly relates to an electric energy sensor with a three-way array structure and a measurement system and method formed by the electric energy sensor.

Background

Currently, a large number of electric energy sensors, such as electric meters, water meters, gas meters, or other electric energy meters, are used because the amount of use in real life is too large to be taken back to the laboratory for detecting electric energy errors. There is a need to find techniques and methods for online detection of these power sensor errors.

For a mathematical algorithm, when the electric energy measurement system is relatively large, a plurality of electric energy sensors are contained in the electric energy measurement system, the similarity of electric energy consumption habits of users can be used for deriving a multiple collinearity problem of the electric energy meter data, and the calculation accuracy of the data calculation method is affected.

Conventionally, power sensors are installed on the pipeline branches or nodes of the power measurement system to be measured, power at each point is measured, and measurement errors of each power sensor are checked respectively when needed. The problem with this approach is that the power sensor error checking is labor intensive and cost prohibitive.

In view of this, overcoming the drawbacks of the prior art is a problem to be solved in the art.

Disclosure of Invention

Aiming at the defects or improvement demands of the prior art, the invention provides an electric energy sensor with a three-way array structure and a measurement system and a method for forming the same, and aims to not only construct an electric energy measurement system with any scale by the electric energy sensor with the three-way array structure, but also divide the electric energy measurement system with a larger scale into a plurality of electric energy arrays with smaller scale by the electric energy sensor with the three-way array structure, wherein each electric energy array meets the relative energy conservation law, calculates the error of the electric energy sensor in each electric energy array respectively, weakens the influence of multiple collinearity on electric energy data calculation caused by the similarity of habits of users using electric energy, improves the calculation efficiency and the calculation precision, and solves the technical problem of multiple collinearity of the electric energy data.

In order to achieve the above objective, in a first aspect, the present invention provides an electric energy sensor with a three-way array structure, where the electric energy sensor with a three-way array structure includes a 1 in and 2 out electric energy splitting structure, the electric energy splitting structure forms an electric energy system according with an electric energy conservation relationship, electric energy sensing units are respectively disposed on pipeline branches of 1 inlet and 2 outlets, and calculation of a metering error of the electric energy sensing units is completed by connecting error reference standard devices in series on any pipeline branch, specifically:

establishing a mathematical model by utilizing the electric energy conservation relation of an electric energy system, calculating electric energy measurement errors of electric energy sensing units respectively arranged on 1 inlet pipeline branch and 2 outlet pipeline branches of the electric energy sensor of the three-way array structure by utilizing electric energy data detected by the electric energy sensor of the three-way array structure and an error reference standard device, compensating the newly measured electric energy data by utilizing the calculated electric energy measurement errors, and continuously and iteratively calculating the measurement errors of the electric energy sensing units to obtain the electric energy sensor of the three-way array structure without errors or equal errors;

the electric energy sensor of the three-way array structure is used for constructing an electric energy system with measurable electric energy errors, and the electric energy system with measurable electric energy errors is arranged in an array mode by cascading the electric energy sensors of the three-way array structure.

In a second aspect, the present invention also provides an electrical energy measurement system formed by electrical energy sensors of a three-way array structure, where the electrical energy measurement system provided with the electrical energy sensors of the three-way array structure of the first aspect includes: the electric energy sensor of the three-way array structure of at least two stages 1 in and 2 out, wherein the electric energy sensor of the three-way array structure of each stage 1 in and 2 out comprises 1 electric energy sensing total surface unit positioned on the inflow side and 2 electric energy sensing sub-meter units positioned on the outflow side, and the 1 electric energy sensing total surface unit positioned on the inflow side and the 2 electric energy sensing sub-meter units positioned on the outflow side form a relative electric energy conservation relation;

the electric energy sensor meter unit is positioned on the outflow side of the electric energy sensor of the three-way array structure of the 1 in and 2 out of the upper stage and is positioned on the inflow side of the electric energy sensor of the three-way array structure of the 1 in and 2 out of the lower stage.

Preferably, the electric energy measurement system comprises n electric energy sensors with three-way array structures, wherein the electric energy sensors with three-way array structures are mutually independent;

the electric energy measurement system further comprises an error reference standard device which is connected in series with any pipeline branch of any three-way array structure electric energy sensor of the n three-way array structures electric energy sensors.

Preferably, the electric energy measurement system further comprises an error reference standard device, wherein the error reference standard device is connected in series on any pipeline branch of the electric energy sensor with the three-way array structure;

when the error reference standard device is arranged on a pipeline branch of the three-way array structure of the last stage 1 in and 2 out, transmitting a reference error value in a progressive calculation mode from a lower level to an upper level so as to calibrate an electric energy measurement system and obtain error-free data or equal error data;

when the error reference standard device is arranged on a pipeline branch of the three-way array structure of which the uppermost stage 1 is in and out, transmitting a reference error value in a progressive calculation mode from the upper layer to the lower layer so as to calibrate the electric energy measurement system, and obtaining error-free data or equal error data;

when the error reference standard device is arranged on a pipeline branch of the three-way array structure with the middle stage 1 in and 2 out, the reference error value is transmitted by a mode of progressive calculation from the middle stage to the upper stage and a mode of progressive calculation from the middle stage to the lower stage, so that the electric energy measurement system is calibrated, and error-free data or equal error data are obtained.

Preferably, the electric energy measurement system comprises a microprocessor and a data transmission module, wherein the microprocessor is connected with each electric energy sensing unit, and the data transmission module is connected with the microprocessor and used for calculating error edges of the electric energy sensing units in the three-way array structure and/or sending electric energy data collected from each electric energy sensing unit to the cloud server.

In a third aspect, the present invention also provides a method for measuring an electric energy system configured by a three-way array structure, the electric energy system configured by electric energy sensors of the three-way array structure including: the electric energy sensor of the three-way array structure of at least two stages 1 in and 2 out, wherein the electric energy sensor of the three-way array structure of each stage 1 in and 2 out comprises 1 electric energy sensing total surface unit positioned on the inflow side and 2 electric energy sensing sub-meter units positioned on the outflow side, and the 1 electric energy sensing total surface unit positioned on the inflow side and the 2 electric energy sensing sub-meter units positioned on the outflow side form a relative electric energy conservation relation;

the electric energy sensing sub-meter unit positioned on the outflow side in the three-way array structure of the 1 in and 2 out of the upper stage is an electric energy sensing total surface unit positioned on the inflow side in the three-way array structure of the 1 in and 2 out of the lower stage;

The error checking method comprises the following steps:

designating or establishing an error reference standard device in the electric energy measurement system and giving a reference error value to the error reference standard device;

collecting original measurement data of the electric energy sensing units on all input pipeline branches and all output pipeline branches in the electric energy measurement system, and original measurement data of the error reference standard device;

calculating a reference measurement error value of an electric energy sensing unit in the 1-in 2-out three-way array structure of the error reference standard device by utilizing a mathematical model established by a relative electric energy conservation relation aiming at the electric energy sensor of the 1-in 2-out three-way array structure of the error reference standard device;

acquiring an electric energy sensor of a three-way array structure with a 1-in-2-out relation of a previous stage or a next stage with the electric energy sensor of the three-way array structure with the calculated reference measurement error value, and calculating to obtain the reference measurement error value of an electric energy sensing unit in the three-way array structure with the 1-in-2-out relation of the corresponding previous stage or the next stage by utilizing a relative electric energy conservation relation;

and calculating the reference measurement error value process of the electric energy sensing units in the 1-in and 2-out three-way array structure through one or more previous or next stages, so as to obtain the reference measurement error values of the electric energy sensing units of all three-way array structures in the electric energy measurement system, and compensating the original measurement data according to the reference measurement error values of the electric energy sensing units of each three-way array structure to obtain the equal-error data or error-free data.

Preferably, the compensating the original measurement data according to the reference measurement error value of each electric energy sensing unit to obtain the equal error data or the error-free data includes:

compensating corresponding original measurement data by using the reference measurement error value to obtain equal error data of the reference error value of each electric energy sensing unit relative to the error reference standard device; when the delta X deviation exists between the true error value and the reference error value of the error reference standard device, compensating the equal error data of the corresponding electric energy sensing units by using the delta X deviation to obtain error-free data; or,

and directly calculating error-free data of the electric energy sensing units corresponding to the three-way array structures according to the true error value of the error reference standard device.

Preferably, the Δx deviation between the true error value and the reference error value of the error reference standard device is obtained, specifically:

taking down the electric energy sensing unit selected as an error reference standard device, and measuring the real error value of the taken-down electric energy sensing unit; the actual error value of the removed power sensing unit is subtracted from the reference error value of the selected power sensing unit to obtain the DeltaX deviation.

Preferably, the error reference standard means and the assigned reference error value are determined, in particular:

a first electric energy sensing unit with a known true error value is connected in series on any pipeline branch of an electric energy sensor of any three-way array structure of the electric energy measurement system;

in the operation process of the electric energy measurement system, respectively reading electric energy data of the first electric energy sensing unit and electric energy data of the electric energy sensing unit on the selected pipeline branch, and calculating a real error value of the electric energy sensing unit on the selected pipeline branch;

the power sensing units on the selected pipeline branches serve as error reference standard devices, and the calculated true error values of the power sensing units on the selected pipeline branches are used for calculating the true error of each connected power sensing unit in the power measuring system.

Preferably, the reference error value of the error reference standard device includes:

in the electric energy measurement system, after any electric energy sensing unit is selected as an error reference standard device, a preset reference error value is matched with a measurement error of the error reference standard device, wherein the difference value between the preset reference error value of the error reference standard device and a true error value of the error reference standard device is equal to DeltaX deviation.

Preferably, the measurement method of the electric energy measurement system formed by the three-way array structure further comprises the following steps:

after the original measurement data of the electric energy sensing unit are collected, determining the similarity condition of each original measurement data;

if the similarity of at least two groups of original measurement data is larger than a preset similarity threshold, adopting a hierarchical calculation mode to calculate measurement errors of each electric energy sensing unit in a cascading way so as to check the original measurement data;

if the similarity of each group of original measurement data is smaller than a preset similarity threshold value, the electric energy sensing sub-meter in the three-way array structure of the last stage 1 in and 2 out and the electric energy sensing total meter in the three-way array structure of the uppermost stage 1 in and 2 out are subjected to relative electric energy conservation relation to obtain measurement errors of corresponding electric energy sensing units so as to verify the original measurement data.

In general, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects: the invention provides an electric energy sensor with a three-way array structure and a measuring system and a measuring method thereof, wherein the electric energy measuring system comprises at least two stages of electric energy sensors with the three-way array structure, the electric energy sensors with the three-way array structure not only can construct an electric energy measuring system with any scale, but also can divide the electric energy measuring system with a larger scale into a plurality of electric energy arrays with smaller scale through the electric energy sensors with the three-way array structure, each electric energy array meets the relative energy conservation law, the error of the electric energy sensor in each electric energy array is calculated respectively, the multiple collinearity influence of electric energy data calculation caused by the similarity of habit of using electric energy of a user is weakened, and the calculating efficiency and the calculating precision are improved.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are required to be used in the embodiments of the present invention will be briefly described below. It is evident that the drawings described below are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic diagram of a three-way array structure of an electrical energy sensor according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a measurement system formed by three-way array electric energy sensors according to an embodiment of the present invention;

FIG. 3 is a schematic circuit diagram of a circuit structure based on a sharing standard according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an electric meter box according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of another embodiment of an electricity meter box;

FIG. 6 is a schematic diagram of a method for measuring an electrical energy system formed by a three-way array according to an embodiment of the present invention;

FIG. 7 is a flow chart of a first implementation of step 10 of FIG. 6 according to an embodiment of the present invention;

FIG. 8 is a flow chart of a second implementation of step 10 of FIG. 6 provided by an embodiment of the present invention;

FIG. 9 is a flow chart of a third implementation of step 10 of FIG. 6 provided by an embodiment of the present invention;

fig. 10 is a schematic structural diagram of an error measurement device according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

The error reference standard device refers to a standard device used as an error reference standard, so that the error reference standard device is determined in the description, and in a certain sense, electric energy data reported by the error reference standard device is used as an error reference standard for breaking a homogeneous equation in the calculation process. Whether using physical experimentation or mathematical calculations, the measurement of any one quantity is relative to a reference datum; any one measurement error is detected relative to an error reference standard, and the etalon or data for the error reference standard is referred to as the error reference standard. For example, a "standard meter" in the experiment of error checking of the conventional electric energy meter is an error reference standard. When calculating an error using the power data, the data error of the power sensor used as the reference datum is the error reference standard calculated at this time.

The constant error data according to the present invention is: for any sensor with errors, after the error calibration processing is performed on the original measurement data of the sensor (the original measurement data has errors) by using the detected error value after the measurement error of any sensor with errors is detected, all the errors of the obtained calibrated electric energy data still exist are equal to the errors brought by the error detection method. These calibrated power data are referred to as "equierror" data. The "isoerror" is equal to the error value of the error reference standard itself (also described as Δx deviation in various embodiments of the invention). Under the concept of the same error, after error calibration processing, the measurement error of each piece of electric energy data of the sensing system is the same. The concept of error is an effective theory which is proposed by the inventor after years of research aiming at the field of sensing systems.

The error-free data according to the invention are: for any isoerror data, when its "isoerror" is measured and calibrated, the resulting data is error-free data. In view of the fact that it is theoretically impossible to have absolute error-free data, it is possible in other words that the error-free data is data with no errors or negligible errors.

Example 1:

as shown in fig. 2, the electric energy sensor of the three-way array structure includes a 1-in and 2-out electric energy splitting structure, the electric energy splitting structure forms an electric energy system according with the electric energy conservation relation, wherein electric energy sensing units are respectively arranged on the pipeline branches of the 1 inlet and 2 outlets (wherein the electric energy sensing units on the inlet pipeline branch are also described as "electric energy sensing total surface units" in other embodiments of the invention, while the electric energy sensors on the 2 outlet pipeline branches are also described as "electric energy sensing branch meter units"), the calculation of the measurement errors of the electric energy sensing units is completed by connecting error reference standard devices in series on any pipeline branch (it is emphasized that the serial error reference standard devices are only used when calculating the measurement errors of the electric energy sensing units in the electric energy sensor of the three-way array structure, therefore, it can be understood that in the factory situation, the electric energy sensor of the three-way array structure does not need to be provided with the error reference standard devices on any pipeline branch, and the invention can be realized by the following the detailed method of the following the specific embodiment of the invention in the three-way array structure by implementing the test system in more detail than the embodiment of the invention in the following embodiment 3:

Establishing a mathematical model by utilizing the electric energy conservation relation of an electric energy system, calculating electric energy measurement errors of electric energy sensing units respectively arranged on 1 inlet pipeline branch and 2 outlet pipeline branches of the electric energy sensor of the three-way array structure by utilizing electric energy data detected by the electric energy sensor of the three-way array structure and an error reference standard device, and continuously and iteratively calculating the measurement errors of the electric energy sensing units by utilizing the calculated errors to compensate the newly measured electric energy data to obtain the electric energy sensor of the three-way array structure without errors or equal errors; the method is based on the fact that the measurement error of the electric energy sensing unit is continuously calculated in an iterative manner until the difference between the calculated error values is smaller than a preset value (the preset value is obtained according to experience and test experiments and is not described in detail herein), and then the error-free or equal error value of each electric energy sensor in the single-phase three-way array structure electric energy sensor can be determined.

The embodiment of the invention provides an electric energy sensor with a three-way array structure, wherein the electric energy sensor with the three-way array structure not only can construct an electric energy measuring system with any scale, but also can divide the electric energy measuring system with a larger scale into a plurality of electric energy arrays with smaller scale through the electric energy sensor with the three-way array structure, each electric energy array meets the relative energy conservation law, the error of the electric energy sensor in each electric energy array is calculated respectively, the influence of multiple collinearity on electric energy data calculation caused by the similarity of the habit of using electric energy of a user is weakened, and the calculation efficiency and the calculation precision are improved.

Example 2:

the present invention also provides an electric energy measurement system composed of electric energy sensors of a three-way array structure, as shown in fig. 2, in the electric energy measurement system provided with the electric energy sensors of the three-way array structure according to embodiment 1, comprising: the electric energy sensor of the three-way array structure of at least two stages 1 in and 2 out, wherein the electric energy sensor of the three-way array structure of each stage 1 in and 2 out comprises 1 electric energy sensing total surface unit positioned on the inflow side and 2 electric energy sensing sub-meter units positioned on the outflow side, and the 1 electric energy sensing total surface unit positioned on the inflow side and the 2 electric energy sensing sub-meter units positioned on the outflow side form a relative electric energy conservation relation;

The embodiment of the invention provides a measurement system formed by electric energy sensors of a three-way array structure, wherein the electric energy sensors of the three-way array structure not only can construct an electric energy measurement system of any scale, but also can divide the electric energy measurement system of a larger scale into a plurality of electric energy arrays of a smaller scale through the electric energy sensors of the three-way array structure, each electric energy array meets the relative energy conservation law, the error of the electric energy sensor in each electric energy array is calculated respectively, the multiple collinearity influence on electric energy data calculation caused by the habit of using electric energy by a user is weakened, and the calculation efficiency and calculation precision are improved.

In combination with the embodiment of the invention, a preferred implementation scheme exists, and the electric energy measurement system comprises n electric energy sensors with three-way array structures, wherein the electric energy sensors with three-way array structures are mutually independent;

There is a preferred implementation scheme in combination with the embodiment of the invention, the electric energy measurement system further includes an error reference standard device, and the error reference standard device is connected in series on any pipeline branch of the electric energy sensor with the three-way array structure;

In combination with the embodiment of the invention, a preferred implementation scheme exists, and the electric energy measurement system comprises a microprocessor and a data transmission module, wherein the microprocessor is connected with each electric energy transmission unit, and the data transmission module is connected with the microprocessor and is used for calculating error edges of electric energy sensing units in a three-way array structure and/or sending electric energy data acquired from each electric energy sensing unit to a cloud server.

Example 3:

the embodiment of the invention also provides a measuring method of the electric energy system formed by the three-way array structure, the electric energy system formed by the electric energy sensors of the three-way array structure comprises the following steps: the electric energy sensor of the three-way array structure of at least two stages 1 in and 2 out, wherein the electric energy sensor of the three-way array structure of each stage 1 in and 2 out comprises 1 electric energy sensing total surface unit positioned on the inflow side and 2 electric energy sensor sub-meter units positioned on the outflow side, and the 1 electric energy sensing total surface unit positioned on the inflow side and the 2 electric energy sensing sub-meter units positioned on the outflow side form a relative electric energy conservation relation;

The measuring method of the electric energy system formed by the tee joint array structure comprises the following steps:

The embodiment of the invention provides a measurement method formed by electric energy sensors of a three-way array structure, wherein the electric energy sensors of the three-way array structure not only can construct an electric energy measurement system of any scale, but also can divide the electric energy measurement system of a larger scale into a plurality of electric energy arrays of a smaller scale through the electric energy sensors of the three-way array structure, each electric energy array meets the relative energy conservation law, the error of the electric energy sensor in each electric energy array is calculated respectively, the multiple collinearity influence of electric energy data calculation caused by the habit of using electric energy by a user is weakened, and the calculation efficiency and calculation precision are improved.

An optional extension scheme exists in combination with the embodiment of the present invention, the compensating the original measurement data according to the reference measurement error value of each electric energy sensing unit, to obtain the equal error data or the error-free data includes:

An optional extension scheme exists in combination with the embodiment of the invention, and the delta X deviation between the true error value and the reference error value of the error reference standard device is obtained, specifically:

An optional extension scheme exists in combination with the embodiment of the invention, and the error reference standard device and the assigned reference error value are determined specifically as follows:

An optional extension scheme exists in combination with the embodiment of the present invention, where the reference error value of the error reference standard device includes:

An optional extension scheme exists in combination with the embodiment of the present invention, and the measurement method of the electric energy measurement system formed by the three-way array structure further includes:

If the similarity of each group of original measurement data is smaller than a preset similarity threshold value, dividing the electric energy sensors in the three-way array structure of the last stage 1 in and 2 out into a meter and a total electric energy sensing table in the three-way array structure of the uppermost stage 1 in and 2 out, and obtaining measurement errors of the corresponding electric energy sensors by utilizing a relative electric energy conservation relationship so as to verify the original measurement data.

In combination with the embodiment of the invention, an optional extension scheme exists, after completing the layout of the three-way array structure in the electric energy system and completing the calculation of the electric energy measurement errors of the electric energy sensing units respectively arranged on the 1-inlet and 2-outlet lines, the continuous iterative calculation of the errors of the electric energy metering devices in the electric energy system on the corresponding pipeline branches is completed by using the metering data with the corrected errors in the three-way array structure.

Example 4:

at present, when the electric energy measurement system is large in scale, due to the similarity of electric energy consumption habits of users, the problem of multiple collinearity of electric energy meter data can be derived, so that the calculation efficiency is reduced, and the calculation accuracy of a data calculation method is affected. In order to solve the foregoing problems, the present embodiment provides an electric energy measurement system for facilitating error checking, in practical use, the electric energy measurement system with a pipeline branch of an electric energy sensor is configured as a structure of a plurality of subsystems for facilitating error calculation, the electric energy measurement system includes at least two electric energy sensors with a 1 in and 2 out three-way array structure, wherein the electric energy sensor with the 1 in and 2 out three-way array structure not only can construct any electric energy measurement system, but also can divide the electric energy measurement system with a larger scale into a plurality of electric energy arrays with smaller scales through the electric energy sensor with the 1 in and 2 out three-way array structure, each electric energy array satisfies the relative energy conservation law, calculates the errors of the electric energy sensors in each electric energy array respectively, and can effectively reduce the multiple co-linearity problem of electric energy data.

Wherein the plurality of power sensors in each power array conform to the correct network topology. The network topology relationship refers to connection and attribution relationship between an inflow side electric energy sensing unit and an outflow side electric energy sensing unit, wherein the concepts of the inflow side electric energy sensing unit and the outflow side electric energy sensing unit are relative terms, and the relationship is a relationship between an electric energy summary table and an electric energy sub-meter.

With reference to fig. 2, a schematic structural diagram of the power measuring system of the present embodiment is described, the power measuring system including: the electric energy sensor of the three-way array structure of at least two stages 1 in and 2 out, wherein the electric energy sensor of the three-way array structure of each stage 1 in and 2 out comprises 1 electric energy sensing total surface unit positioned on an inflow side and 2 electric energy sensing sub-meter units positioned on an outflow side, and the 1 electric energy sensing total surface unit positioned on the inlet side and the 2 electric energy sensing sub-meter units positioned on the outlet side form a relative energy conservation relation.

The electric energy sensing meter dividing unit is positioned on the outflow side of the electric energy sensor of the three-way array structure of the 1 in and 2 out of the upper stage and is an electric energy sensing total surface unit positioned on the inflow side of the three-way array structure of the 1 in and 2 out of the lower stage.

In this embodiment, the upper stage and the lower stage are relative concepts, wherein the uppermost stage of the electric energy sensor and the last stage of the electric energy sensor are removed, the electric energy sensor located in the middle is an electric energy sensor of a three-way array structure with different 1 in and 2 out, and the electric energy sensor is an electric energy sensing meter unit when a certain electric energy sensor unit is subordinate to the electric energy sensor of the three-way array structure with the 1 in and 2 out of the upper stage; when a certain electric energy sensing unit belongs to the electric energy sensor with the three-way array structure of the next stage 1 in and 2 out, the electric energy sensing unit is an electric energy sensing total surface unit.

The error calculation and compensation of the electric energy sensor with the 1-in and 2-out three-way array structure are explained.

For an electrical energy measurement system with 1 inlet line and 2 outlet lines, the electrical energy meets the relative energy conservation relationship, namely, the following formula is satisfied:

wherein in the foregoing formulaAnd->And the original measurement data and errors corresponding to the 1 th electric energy sensing total table unit and the ith electric energy sensing sub table unit are respectively represented.

In the foregoing equation of the present invention,any one of the above is a known quantity, and the reference measurement error value of other electric energy sensing units can be obtained by reading data for at least 2 times.

The readings of the electric energy sensing total table unit and the electric energy sensing sub table are compensated by using the calculated reference measurement error value, and electric energy data without errors or equal errors can be obtained:

wherein,and->The data respectively represent the electric energy data of the compensated electric energy sensing total surface unit and the electric energy sensing sub-meter, and the compensated data also satisfy the relative energy conservation relation: />。

In the foregoing calculation process, an error reference standard device needs to be set, and error-free data or error-free data can be obtained through the error reference standard device, so that error correction is performed on the electric energy measurement system.

The selection or setting of the error reference standard means comprises at least the following ways: a cascading calculation transfer method; a method of sharing criteria; a standard method is connected in series; post-correction methods.

The cascade calculation transfer method refers to the following steps: and selecting an electric energy sensing unit as an error reference standard device on a pipeline branch of the electric energy sensor with the three-way array structure of 1 in and 2 out of a certain stage, and endowing the error reference standard device with a reference error value.

Specifically, when the error reference standard device is arranged on a pipeline branch of the electric energy sensor of the three-way array structure of which the last stage is 1 in and 2 out, transmitting a reference error value in a way of progressive calculation from a lower level to an upper level so as to calibrate an electric energy measurement system and obtain error-free data or equal error data; when the error reference standard device is arranged on a pipeline branch of the electric energy sensor of the three-way array structure of which the uppermost stage 1 is in and out, the reference error value is transmitted in a progressive calculation mode from the upper layer to the lower layer so as to calibrate the electric energy measurement system, and error-free data or equal error data are obtained. In a preferred embodiment, the error reference standard device may be disposed at an intermediate stage, so that the calibration may be performed from the intermediate stage to two ends, so as to improve the calculation efficiency, specifically, when the error reference standard device is disposed on a pipeline branch of the electric energy sensor of the three-way array structure of 1 in and 2 out of the intermediate stage, the reference error value is transmitted in a manner of progressive calculation from the intermediate stage to the upper stage and in a manner of progressive calculation from the intermediate stage to the lower stage, so as to calibrate the electric energy measurement system, and obtain error-free data or equal error data.

For example, "1" in each lower level (for which the reference measurement error value has been calculated) of the 1 in 2 out three-way array structure may be a subset of "2" in another upper level (for which the error has yet to be calculated) of the 1 in 2 out three-way array structure; similarly, a subset of "2" in each upper level (for which the reference measurement error value has been calculated) of the 1-in-2-out three-way array structure may be "1" in another lower level (for which the error has yet to be calculated) of the 1-in-2-out three-way array structure. In this way, the reference error value is transmitted in a cascading manner, and the verification is performed on the electric energy sensing units in each independent electric energy sensor with the 1-in and 2-out three-way array structure.

When there is delta X deviation between the true error value and the reference error value of the error reference standard device, compensating the equal error data of each corresponding electric energy sensing unit by using the delta X deviation to obtain error-free data. When the reference error value of the error reference standard device is the same as the true error value of the error reference standard device, error-free data corresponding to each electric energy sensing unit are obtained directly according to the true error value of the error reference standard device.

The method for sharing the standard refers to the following steps: the electric energy sensor with known or unknown error is connected in series to any pipeline branch of the 1 electric energy sensors with 1-in and 2-out three-way array structure, and the electric energy sensor is used as an error reference standard device, so that the calculation of the reference measurement error value of the electric energy sensor with the corresponding 1-in and 2-out three-way array structure can be completed. Then, the same known or unknown error electric energy sensor is connected into any pipeline branch of the adjacent 1-in and 2-out three-way array structure electric energy sensors in series through pipeline branch switching, and is used as an error reference standard device, so that the error calculation of the adjacent 1-in and 2-out three-way array structure electric energy sensor can be completed. By sharing the standard method, the error value can be transferred between the 2 independent electric energy sensors with the 1-in and 2-out three-way array structure.

Specifically, the electric energy measurement system comprises an electric energy sensor of a first 1-in 2-out three-way array structure and an electric energy sensor of a second 1-in 2-out three-way array structure, wherein the electric energy sensor of the first 1-in 2-out three-way array structure and the electric energy sensor of the second 1-in 2-out three-way array structure are mutually independent;

The electric energy measurement system further comprises an error reference standard device, wherein the error reference standard device is arranged on a pipeline branch of the electric energy sensor of the first 1-in and 2-out three-way array structure, and the error reference standard device is also arranged on a pipeline branch of the electric energy sensor of the second 1-in and 2-out three-way array structure, and a switch is arranged on the selected pipeline branch; and switching a pipeline branch into which the error reference standard device is connected by setting a state of a switch so as to selectively connect the error reference standard device in series to the electric energy sensor of the first 1-in-2-out three-way array structure or the electric energy sensor of the second 1-in-2-out three-way array structure.

For example, referring to fig. 3, the corresponding circuit structure design can be used for switching the pipeline branches by controlling the on/off of the corresponding switch. As shown in fig. 3, taking the electric energy sensor of the three-way array structure with 1 in and 2 out as an example explanation, the electric energy sensor of the three-way array structure with 1 in and 2 out and the electric energy sensor of the three-way array structure with 2 in and 2 out are mutually independent, the error reference standard device is simultaneously connected in series on one pipeline branch of the electric energy sensor of the three-way array structure with 1 in and 2 out and the electric energy sensor of the three-way array structure with 2 in and 2 out, meanwhile, a switch K1 is arranged on the pipeline branch of the electric energy sensor of the three-way array structure with 1 in and 2 out, the switch K1 is connected in parallel with the error reference standard device, the switch K1 and the error reference standard device are connected in series with the electric energy sensing units on the selected pipeline branch, and a switch K2 is arranged between the error reference standard device and the electric energy sensing units on the selected pipeline branch; meanwhile, a switch K3 is arranged on a pipeline branch of the electric energy sensor of the second 1-in 2-out three-way array structure, the switch K3 is connected with the error reference standard device in parallel, the switch K3 and the error reference standard device are connected with the electric energy sensing units on the selected pipeline branch in series, and a switch K4 is arranged between the error reference standard device and the electric energy sensing units on the selected pipeline branch. The switches K1 to K4 can be specifically switch channels of relays, and the on-off of the corresponding switches K1 to K4 is controlled through the relays.

In actual use, when the switch K1 is set to be in an open state, the switch K2 is set to be in a closed state, the switch K3 is set to be in a closed state, and the switch K4 is set to be in an open state, the error reference standard device is connected in series to a pipeline branch corresponding to the electric energy sensor of the first 1 in 2 out three-way array structure, and is used as an error reference standard to perform error checking on the electric energy sensing unit in the electric energy sensor of the first 1 in 2 out three-way array structure.

In actual use, when the switch K1 is set to be in a closed state, the switch K2 is set to be in an open state, the switch K3 is set to be in an open state, and the switch K4 is set to be in a closed state, the error reference standard device is connected in series to a pipeline branch corresponding to the electric energy sensor of the second 1 in 2 out three-way array structure, and is used as an error reference standard to perform error checking on the electric energy sensing unit in the electric energy sensor of the second 1 in 2 out three-way array structure.

In this embodiment, the error calibration of the two independent 1 in and 2 out three-way array electric energy sensors can be completed by one error reference standard device, and the normal operation of each other is not affected. In the electric energy sensor with the 1-in and 2-out three-way array structure, the standard sharing method is similar, and is not repeated here.

The serial standard method refers to the following steps: the electric energy sensor with known error is connected in series to any pipeline branch of the electric energy sensor with the 1-in and 2-out three-way array structure and used as an error reference standard device, so that the electric energy sensor error calculation with the 1-in and 2-out three-way array structure can be completed.

The post-correction method refers to: and selecting 1 pipeline branch electric energy sensing units in the electric energy sensor with the 1-in and 2-out three-way array structure, giving reference error values to the electric energy sensing units, and calculating the errors of all the electric energy sensing units of the electric energy sensor with the 1-in and 2-out three-way array structure. The method comprises the steps of taking down selected pipeline branch electric energy sensing units from electric energy sensors of a 1-in and 2-out three-way array structure, measuring true error values by using a standard experiment method, calculating deviation delta X between the set reference error values and the true error values, correcting errors of all electric energy sensing units by using the deviation delta X, obtaining true errors of all electric energy sensing units, correcting original measured data, and obtaining error-free data.

Further, the electric energy measurement system comprises a microprocessor and a data transmission module, wherein the microprocessor is connected with each electric energy sensing unit, and the data transmission module is connected with the microprocessor and used for sending electric energy data acquired by the microprocessor from each electric energy sensing unit to the cloud server.

The preset number of I/O ports in the microprocessor are set to be connected with the data transmission ends of the preset number of electric energy sensors. The acquisition end of the electric energy sensor sub-meter positioned at the last stage is coupled with a user line and/or a user pipeline which are responsible for detection, and is used for feeding back the actual use condition of the corresponding user to the microprocessor; the data transmission module is connected with the microprocessor, and transmits detection data acquired from each electric energy sensing unit to the cloud server when the detection data are needed.

In combination with the above embodiments, the electric energy measurement system provided by the invention includes at least two stages of electric energy sensors with a 1-in and 2-out three-way array structure, wherein the electric energy sensors with the 1-in and 2-out three-way array structure not only can construct an electric energy measurement system with any scale, but also can divide the electric energy measurement system with a larger scale into a plurality of electric energy arrays with smaller scale through the electric energy sensors with the 1-in and 2-out three-way array structure, each electric energy array satisfies the law of conservation of relative energy, and the error of the electric energy sensing unit in each three-way array structure is calculated respectively, so that the multiple collinearity influence of electric energy data calculation caused by the similarity of habit of using electric energy of a user is weakened, and the calculation efficiency and calculation precision are improved.

Example 5:

in practical use, the electric energy sensor with the three-way array structure of 1 in and 2 out has various application situations, for example, the electric energy sensor with the three-way array structure of 1 in and 2 out can be used as an error correction tool of an electric energy meter, calculation errors and error compensation are utilized, the electric energy sensor with the three-way array structure of 1 in and 2 out is used as an error-free sensor system, and errors of the electric energy sensors connected in series on a pipeline branch of the electric energy sensor are verified; the electric energy sensor with the three-way array structure of 1 in and 2 out can be used as a subsystem of a netlike electric energy sensor system; the principle design and the manufacturing of the electric energy meter of the electric energy sensor adopting the three-way array structure with 1 inlet and 2 outlet are adopted.

In addition, the electric energy sensor with the three-way array structure with the 1-in and 2-out can be connected in an expansion way, and the method for cascading and expanding the electric energy measurement system is as follows: by cascading 2 electric energy sensors with 1 in and 2 out three-way array structures, an electric energy measurement system capable of measuring errors of the electric energy sensors can be constructed, specifically, 1 in the electric energy sensors with 1 in and 2 out three-way array structures of the lower level is connected to the electric energy sensors with 1 in and 2 out three-way array structures of the upper level (errors yet to be calculated), and becomes one part of 2, and the electric energy sensors with 2 1 in and 2 out three-way array structures are connected to form 1 new electric energy measurement system, wherein error values of all the electric energy sensors can be calculated.

In addition, the electric energy sensor with the 1 in and 2 out three-way array structure can cope with sudden sensor faults, for example, for 3 electric energy sensing units in the electric energy sensor with the 1 in and 2 out three-way array structure, if the jth electric energy sensing unit has sudden faults, the electric energy measuring function is lost, and the electric energy data of the sudden fault electric energy sensor can be obtained through the following formula：

By the above way, the risk of losing electrical energy data due to the operation of the electrical energy sensor can be avoided.

In this embodiment, the minimum electric energy measurement system can be constructed by the electric energy sensor with the three-way array structure of 1 in and 2 out, so that the scale of the electric energy measurement system is reduced as much as possible, the multiple collinearity influence of electric energy data calculation caused by the similarity of habits of users in using electric energy is weakened, and the error calculation accuracy of the electric energy sensor is improved.

In the following, the use of the electric energy sensor in a three-way array structure of 1 in and 2 out in an electric meter box is illustrated.

In combination with fig. 4, a product form of an electric meter box is shown, the electric energy sensing unit can be a sampling resistor specifically, and the electricity consumption situation of a user is obtained through the sampling resistor, wherein the sampling resistor (sub-meter) of the electric energy sensor of the three-way array structure of the last stage 1 in and 2 out is used for being coupled with a circuit of the user so as to detect the electricity consumption situation of the user, the sampling resistors of the electric energy sensors of the three-way array structure of the other stages 1 in and 2 out are integrated and arranged in a meter corrector, so that a large-scale power supply system is divided into a plurality of small power supply systems, and when the meter corrector is used for meter correction, the meter correction can be carried out in a grading manner, the data processing quantity of each time is reduced, the calculation efficiency is improved, and the multiple collinearing influence of electric energy data calculation caused by the habit similarity of the electric energy consumption quantity can be weakened.

In combination with fig. 5, a product form of another electric meter box is shown, the electric energy sensing unit can be specifically a sampling resistor, and the electricity consumption situation of the user is obtained through the sampling resistor, wherein the sampling resistor (sub-meter) of the electric energy sensor of the three-way array structure of the last stage 1 in and 2 out is used for coupling with the line of the user so as to detect the electricity consumption situation of the user, the sampling resistors of the electric energy sensors of the three-way array structures of the other stages 1 in and 2 out are all integrally arranged in the meter corrector, in addition, the electric meter box further comprises a user electric meter, and the user electric meter is connected with the sampling resistor positioned at the most terminal so as to display the electricity consumption of the user. Therefore, the large-scale power supply system is divided into a plurality of small power supply systems, when the meter calibrating device is used for calibrating the meter, the meter calibrating can be carried out in a grading manner, the data processing amount of each time is reduced, the calculation efficiency can be improved, and the multiple collinearity influence on electric energy data calculation caused by the habit similarity of the electric quantity used by a user can be weakened.

The ammeter case that fig. 5 shows has set up the user ammeter at the user side, and the user ammeter is used for showing the power consumption of user, and the user can learn its power consumption condition through the electric quantity display of user ammeter, to a certain extent, provides the convenience for the user. However, currently, the user electric meter is generally disposed at a fixed location of the building, and the user generally cannot see the display of the user electric meter, that is, the display function of the electric meter box in the form of fig. 5 is generally not used, so that the electric meter box illustrated in fig. 4 can be popularized in order to reduce the cost while ensuring the electric quantity detection function.

The electricity meter box shown in fig. 4 is not provided with a user electricity meter on the user side, that is, the function of displaying the electricity is not provided, when the user needs to acquire the electricity consumption condition of the user, the connection can be established with the corresponding cloud server, and the electricity consumption condition of the user can be acquired through a network, so that the component of the user electricity meter can be reduced, the installation of the user electricity meter can be reduced, and the product cost and the installation cost can be greatly reduced.

Example 6:

in combination with the electric energy measurement system of the above embodiment, the present embodiment provides a measurement method of an electric energy measurement system configured by a three-way array structure of the electric energy measurement system, the electric energy measurement system includes: the electric energy sensor of the three-way array structure of at least two stages 1 in and 2 out comprises an electric energy sensing total surface unit positioned at an inlet side and 2 electric energy sensing sub-meter units positioned at an outlet side, wherein the electric energy sensing total surface unit positioned at an inlet side and the electric energy sensing sub-meter units positioned at an outlet side form a relative energy conservation relation; the electric energy sensor meter unit is used for measuring the electric energy of the electric energy sensor of the three-way array structure of the next stage 1 in and 2 out, and is used for measuring the electric energy of the electric energy sensor of the three-way array structure of the next stage 1 in and 2 out;

Referring to fig. 6, the method for measuring the electric energy system formed by the three-way array structure includes the following steps:

step 10: an error reference standard device is assigned or built into the power measurement system and assigned a reference error value.

In this embodiment, in order to calibrate the original data, an error reference standard device is set first, and then the original measurement data is calibrated based on the error reference standard device, so as to eliminate errors and obtain more accurate electric energy data. There are at least the following ways of setting up the error reference standard means.

Mode one: by adopting a post calibration method, the determining an error reference standard device, specifically, selecting an electric energy sensing unit as an error reference standard device in the electric energy measurement system at will, acquiring a Δx deviation between a true error value of the error reference standard device and the reference error value, as shown in fig. 7, specifically includes:

step 1111: the selected power sensing unit is removed from the power measurement system and the actual error value of the selected power sensing unit is measured.

Referring to fig. 2, the electric energy measurement system includes a plurality of electric energy sensing units, wherein the electric energy sensors of the three-way array structure for each stage 1 in and 2 out each include 3 electric energy sensing units, wherein one electric energy sensing total table is used for measuring inflow side energy, 2 electric energy sensing sub tables are used for measuring outflow side energy, and 3 electric energy sensors form a correct network topology relationship, and whether the network topology relationship is correct or not can be determined according to a correlation method.

For the electric energy sensor with the three-way array structure of 1 in and 2 out of each stage, one electric energy sensing unit can be selected from any one of 3 electric energy sensing units to serve as an error reference standard device.

Step 1112: subtracting the reference error value of the selected power sensing unit from the actual error value of the selected power sensing unit to obtain the DeltaX deviation.

In an alternative embodiment, a numerical value is self-specified as the reference error value according to the actual situation, and a numerical value can also be selected from the standard measurement error interval as the reference error value. The reference error value may be in and out of the true measurement error of the power sensing unit, and may not truly reflect the true measurement error of the power sensing unit. The difference between the reference error value of the error reference standard device and the true error value of the error reference standard device is equal to the DeltaX deviation.

Mode two: by adopting a serial standard method, the device for determining the error reference standard specifically includes that a first electric energy sensing unit with a known true error value is connected in series on a pipeline branch where any electric energy sensor in the electric energy measurement system is located, and then the reference measurement error of each electric energy sensing unit in the electric energy measurement system is obtained through calculation, as shown in fig. 8, the specific electric energy measurement system includes:

Step 1121: and in the operation process of the electric energy measurement system, respectively reading the electric energy data of the first electric energy sensing unit and the electric energy data of the electric energy sensing units on the pipeline branches, and calculating the real error value of the electric energy sensing units on the selected pipeline branches.

Step 1122: and the calculated true error value of the electric energy sensing units on the selected pipeline branch is used as an error reference standard device, and the true error of each electric energy sensing unit in the electric energy measuring system is calculated by using the calculated true error value of the electric energy sensing units on the selected pipeline branch.

In comparison, the second mode is more suitable for the example scenario of the specific application, but in the implementation process of the second mode, it is also recommended to set an interface for accessing the first power sensing unit in a certain pipeline branch or multiple pipeline branches of the existing power measurement system.

Mode three: adopting a cascade calculation transmission method, wherein the electric energy measurement system and the adjacent first electric energy measurement system and/or second electric energy measurement system can construct a relative second electric energy conservation environment, and then determining an error reference standard device, specifically, arbitrarily selecting an electric energy sensor with a known true error value from the first electric energy measurement system and/or the second electric energy measurement system as the error reference standard device; the calculating obtains a reference measurement error of each electric energy sensing unit in the electric energy measurement system, as shown in fig. 9, specifically including:

Step 1131: and establishing an energy equation according to the second electric energy conservation environment by the electric energy measurement system and each electric energy sensor in the adjacent first electric energy measurement system and/or second electric energy measurement system.

Step 1132: and calculating the true error of each electric energy sensing unit in the electric energy measuring system according to the true error value of the error reference standard device.

In this embodiment, an electrical energy sensing unit having a real error value in the adjacent electrical energy measurement system may be selected as an error reference standard device according to the adjacent electrical energy measurement system having the known real error value, where the reference error value determined according to this method is the real error value (also described as a real error), so that the real error value of each electrical energy sensing unit in the electrical energy measurement system to be measured can be calculated under a circumstance that the electrical energy measurement system to be measured is based on the electrical energy measurement system to be measured and the adjacent first electrical energy measurement system and/or second electrical energy measurement system can construct a relative second electrical energy conservation environment.

In the third mode, when the error reference standard device is set, the reference measurement error value of each electric energy sensing unit obtained according to the following step 12 is the true error value of each electric energy sensor, and after the corresponding original data is calibrated through the true error value, error-free electric energy data can be obtained. In general, the third mode is the most intelligent, but the specific implementation of the third mode also puts higher demands on the architecture relationship, the sharing of data and the computing capacity of each electric energy measurement system in the current environment.

Mode four: by adopting a standard sharing mode, an electric energy sensor with known or unknown error is connected in series to any pipeline branch of the electric energy sensors with 1-in and 2-out three-way array structures, and the electric energy sensors are used as error reference standard devices, so that the calculation of reference measurement error values of the electric energy sensors with the corresponding 1-in and 2-out three-way array structures can be completed. Then, the same known or unknown error electric energy sensor is connected into any pipeline branch of the adjacent 1-in and 2-out three-way array structure electric energy sensors in series through pipeline branch switching, and is used as an error reference standard device, so that the error calculation of the adjacent 1-in and 2-out three-way array structure electric energy sensor can be completed. By sharing the standard method, the error value can be transferred between the 2 independent electric energy sensors with the 1-in and 2-out three-way array structure.

Specifically, the electric energy measurement system comprises an electric energy sensor of a first 1-in-2-out three-way array structure and an electric energy sensor of a second 1-in-2-out three-way array structure, wherein the electric energy sensor of the first 1-in-2-out three-way array structure and the electric energy sensor of the second 1-in-2-out three-way array structure are mutually independent, namely, the electric energy sensor of the first 1-in-2-out three-way array structure is subordinate to one electric energy measurement system, and the electric energy sensor of the second 1-in-2-out three-way array structure is subordinate to the other electric energy measurement system; the electric energy measurement system further comprises an error reference standard device, wherein the error reference standard device is arranged on a pipeline branch of the electric energy sensor of the first 1-in and 2-out three-way array structure, and the error reference standard device is also arranged on a pipeline branch of the electric energy sensor of the second 1-in and 2-out three-way array structure, and a switch is arranged on the selected pipeline branch; and switching a pipeline branch into which the error reference standard device is connected by setting a state of a switch so as to selectively connect the error reference standard device in series to the electric energy sensor of the first 1-in-2-out three-way array structure or the electric energy sensor of the second 1-in-2-out three-way array structure.

In this embodiment, the error calibration of the two independent 1 in and 2 out three-way array electric energy sensors can be completed by one error reference standard device, and the normal operation of each other is not affected.

In other ways, a standard meter can also be introduced into the power measurement system, which standard meter serves as an error reference standard. The setting mode of the error reference standard device is selected according to the actual situation, and is not particularly limited herein.

Step 11: and collecting the original measurement data of the electric energy sensing units on all the input pipeline branches and the output pipeline branches in the electric energy measurement system, and the original measurement data of the error reference standard device.

In this embodiment, the raw measurement data of the individual power sensing units may be automatically collected by the concentrator and transferred to the database server. Wherein, because of errors in the power sensing unit, the raw measurement data is correspondingly error-prone.

Step 12: and calculating a reference measurement error value of an electric energy sensing unit in the electric energy sensor with the 1-in 2-out three-way array structure in which the error reference standard device is positioned by utilizing a relative energy conservation relation aiming at the electric energy sensor with the 1-in 2-out three-way array structure in which the error reference standard device is positioned.

In this embodiment, a cascade progressive calculation manner may be adopted to transfer the reference error value, so that the scale of data calculation may be reduced, the calculation efficiency may be improved, and the co-linearity problem caused by the similarity of the user electric energy data may be reduced.

Step 13: and acquiring an electric energy array with a 1-in 2-out relation of the upper stage or the lower stage of the electric energy sensor with the calculated reference measurement error value, and calculating the reference measurement error value of the electric energy sensor in the electric energy sensor with the three-way array structure corresponding to the 1-in 2-out of the upper stage or the lower stage by utilizing the relative energy conservation relation.

Step 14: and calculating the reference measurement error value process of the electric energy sensors in the electric energy sensors with the 1-in and 2-out three-way array structure through one or more previous stages or next stages, thereby obtaining the reference measurement error values of all the electric energy sensing units in the electric energy measurement system, and compensating the original measurement data according to the reference measurement error value of each electric energy sensing unit to obtain equal-error data or error-free data.

In the embodiment, the corresponding original measurement data is compensated by using the reference measurement error value to obtain the equal error data of the reference error value of each electric energy sensing unit relative to the error reference standard device; when the delta X deviation exists between the true error value and the reference error value of the error reference standard device, compensating the equal error data of the corresponding electric energy sensors by using the delta X deviation to obtain error-free data; or,

And directly calculating error-free data corresponding to each electric energy sensor according to the true error value of the error reference standard device.

When the setting modes of the error reference standard device are different, the data calibration modes corresponding to the step 12 are also different.

When the error reference standard device is set in the second mode or the standard meter is directly referenced as the error reference standard device, the measurement error of each electric energy sensing unit in the electric energy measurement system is obtained based on the error reference standard device, the measurement error is the true error value of each electric energy sensing unit, and then the corresponding original measurement data is calibrated based on the true error value of each electric energy sensing unit, so that error-free data are obtained.

When the error reference standard device is selected in the foregoing manner, the measurement error of each electric energy sensing unit in the electric energy measurement system is obtained based on the error reference standard device, where the measurement error is a reference measurement error of each electric energy sensing unit, and may not be equal to the true error value. And calibrating the original measurement data according to the reference measurement errors to obtain compensated electric energy data, wherein the compensated electric energy data corresponding to each electric energy sensing unit is equal error data aiming at the electric energy measurement system, and error-free data can be obtained after the equal errors are required to be eliminated.

Due to the equal error theory, the true error value of each electric energy sensing unit minus the reference measurement error thereof is correspondingly equal to the DeltaX deviation. Therefore, an electric energy sensing unit can be selected at will to acquire the true error value of the electric energy sensing unit so as to acquire the delta X deviation of the electric energy measuring system, and the compensated electric energy data of other electric energy sensors are calibrated to acquire error-free electric energy data.

In this embodiment, after the Δx deviation is obtained, the compensated electric energy data of each electric energy sensing unit is calibrated according to the Δx deviation, so as to obtain error-free electric energy data of each electric energy sensor, where the error-free electric energy data is data that has no errors in theory or data that has negligible errors.

Example 7:

fig. 10 is a schematic structural diagram of an error calibration device according to an embodiment of the present invention. The error calibration device of the present embodiment includes one or more processors 41 and a memory 42. In fig. 10, a processor 41 is taken as an example.

The processor 41 and the memory 42 may be connected by a bus or otherwise, which is illustrated in fig. 10 as a bus connection.

The memory 42 is used as a non-volatile computer-readable storage medium for storing a non-volatile software program and a non-volatile computer-executable program, and is used for storing the measurement method in embodiment 2 to embodiment 6. The processor 41 performs the measurement method by running non-volatile software programs and instructions stored in the memory 42.

Memory 42 may include high-speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some embodiments, memory 42 may optionally include memory located remotely from processor 41, which may be connected to processor 41 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

It should be noted that, because the content of information interaction and execution process between modules and units in the above-mentioned device and system is based on the same concept as the processing method embodiment of the present invention, specific content may be referred to the description in the method embodiment of the present invention, and will not be repeated here.

Those of ordinary skill in the art will appreciate that all or a portion of the steps in the various methods of the embodiments may be implemented by a program that instructs associated hardware, the program may be stored on a computer readable storage medium, the storage medium may include: read Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk, optical disk, or the like.

It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims

1. The utility model provides an electric energy measurement system that three way array structure's electric energy sensor constitutes, its characterized in that, three way array structure's electric energy sensor includes 1 business turn over 2 electric energy split stream structures, and electric energy split stream structure constitutes an electric energy system who accords with electric energy conservation relation, wherein is provided with the electric energy sensing unit on the pipeline branch of 1 import and 2 export respectively, and the mode of error reference standard device or the mode of appointed error reference standard device of concatenating on arbitrary pipeline branch accomplish the calculation of electric energy sensing unit measurement error, specifically: establishing a mathematical model by utilizing the electric energy conservation relation of an electric energy system, calculating electric energy measurement errors of electric energy sensing units respectively arranged on 1 inlet pipeline branch and 2 outlet pipeline branches of the electric energy sensor of the three-way array structure by utilizing electric energy data detected by the electric energy sensor of the three-way array structure and an error reference standard device, compensating the newly measured electric energy data by utilizing the calculated electric energy measurement errors, and continuously and iteratively calculating the measurement errors of the electric energy sensing units to obtain the electric energy sensor of the three-way array structure without errors or equal errors; in an electrical energy measurement system, comprising: the electric energy sensor of the three-way array structure of at least two stages 1 in and 2 out, wherein the electric energy sensor of the three-way array structure of each stage 1 in and 2 out comprises 1 electric energy sensing total surface unit positioned on the inflow side and 2 electric energy sensing sub-meter units positioned on the outflow side, and the 1 electric energy sensing total surface unit positioned on the inflow side and the 2 electric energy sensing sub-meter units positioned on the outflow side form a relative electric energy conservation relation;

The electric energy sensor meter unit is used for measuring the electric energy of the electric energy sensor of the three-way array structure of the next stage 1 in and 2 out, and is used for measuring the electric energy of the electric energy sensor of the three-way array structure of the next stage 1 in and 2 out;

the error checking method comprises the following steps:

Calculating the reference measurement error value process of the electric energy sensing units in the 1-in and 2-out three-way array structure through one or more previous or next stages, so as to obtain the reference measurement error values of the electric energy sensing units of all three-way array structures in the electric energy measurement system, and compensating the original measurement data according to the reference measurement error values of the electric energy sensing units of each three-way array structure to obtain equal-error data or error-free data;

the method comprises the steps of connecting an electric energy sensor with known or unknown errors in series to any pipeline branch of 1 electric energy sensor with a 1-in and 2-out three-way array structure, and using the electric energy sensor as an error reference standard device to finish calculation of reference measurement error values of the electric energy sensor with the corresponding 1-in and 2-out three-way array structure; the same known or unknown error electric energy sensor is connected into any pipeline branch of the adjacent 1-in and 2-out three-way array structure electric energy sensors in series through pipeline branch switching, and is used as an error reference standard device to finish the error calculation of the adjacent 1-in and 2-out three-way array structure electric energy sensor.

2. The system for measuring electric energy formed by electric energy sensors with three-way array structures according to claim 1, wherein the electric energy measuring system comprises n electric energy sensors with three-way array structures, wherein the electric energy sensors with three-way array structures are mutually independent;

The electric energy measurement system further comprises an error reference standard device, wherein the error reference standard device is connected in series to a pipeline branch where the electric energy sensor in any one of the n three-way array structures is located.

3. The system for measuring electric energy formed by electric energy sensors with three-way array structure according to claim 1, wherein the system for measuring electric energy further comprises an error reference standard device, and the error reference standard device is connected in series on any pipeline branch of the electric energy sensors with three-way array structure;

4. The system for measuring electric energy formed by electric energy sensors of three-way array structure according to claim 1, wherein the electric energy measuring system comprises a microprocessor and a data transmission module, the microprocessor is connected with each electric energy sensing unit, the data transmission module is connected with the microprocessor, and is used for calculating error edges of the electric energy sensing units of the three-way array structure and/or is used for sending electric energy data collected from each electric energy sensing unit to a cloud server.

5. The measuring method of the electric energy measuring system formed by three-way array structure is characterized in that the electric energy system formed by electric energy sensors of the three-way array structure comprises the following steps: the electric energy sensor of the three-way array structure of at least two stages 1 in and 2 out, wherein the electric energy sensor of the three-way array structure of each stage 1 in and 2 out comprises 1 electric energy sensing total surface unit positioned on the inflow side and 2 electric energy sensing sub-meter units positioned on the outflow side, and the 1 electric energy sensing total surface unit positioned on the inflow side and the 2 electric energy sensing sub-meter units positioned on the outflow side form a relative electric energy conservation relation;

the error checking method comprises the following steps:

6. The method for measuring the electrical energy of the three-way array structure according to claim 5, wherein the compensating the original measurement data according to the reference measurement error value of each electrical energy sensing unit to obtain the equal error data or the no error data comprises:

7. The method for measuring the electric energy by the three-way array structure according to claim 6, wherein the Δx deviation between the true error value and the reference error value of the error reference standard device is obtained, specifically:

8. The method for measuring the electric energy of the three-way array structure according to claim 5, wherein the error reference standard device and the assigned reference error value are determined specifically as follows:

9. The method for measuring the electric energy of the three-way array structure according to claim 5, wherein the reference error value of the error reference standard device comprises:

10. The method for measuring the electric energy of the three-way array structure according to claim 5, further comprising: