CN114152806A

CN114152806A - Electric energy sensor with three-way array structure and measurement system and method formed by electric energy sensor

Info

Publication number: CN114152806A
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: 2022-03-08
Anticipated expiration: 2040-09-08
Also published as: CN114152806B

Abstract

The invention discloses an electric energy sensor with a three-way array structure and a measuring system and method formed by the electric energy sensor. The method comprises the steps of 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 with the three-way array structure by utilizing electric energy data detected by the electric energy sensor with the three-way array structure and an error reference standard device, compensating newly measured electric energy data by utilizing the calculated errors, continuously and iteratively calculating the measurement errors of the electric energy sensing units, and obtaining the electric energy sensor with the three-way array structure without errors or the like. The multiple collinearity influence on electric energy data calculation caused by the similarity of the habits of using electric energy by users is weakened, and the calculation efficiency and the calculation precision are improved.

Description

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

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 a measurement method for the electric energy sensor.

Background

At present, a large number of electric energy sensors, such as an electric meter, a water meter, a gas meter or other electric energy meters, cannot be removed back to a laboratory to detect electric energy errors due to too large usage amount in real life. There is a need to find techniques and methods for online detection of errors in these power sensors.

For mathematical algorithms, when an electric energy measurement system is large, a plurality of electric energy sensors are included in the electric energy measurement system, the multiple collinearity problem of electric energy meter data can be derived due to the similarity of electric energy consumption habits of users, and the calculation accuracy of the data calculation method is influenced.

Conventionally, an electric energy sensor is installed on a pipeline branch or a node of a measured electric energy measurement system, electric energy of each point is measured, and a measurement error of each electric energy sensor is checked when needed. The method has the problems of huge workload and high cost of error checking of the electric energy sensor.

In view of the above, overcoming the drawbacks of the prior art is an urgent problem in the art.

Disclosure of Invention

The invention provides an electric energy sensor with a tee-joint array structure, a measuring system and a measuring method for the electric energy sensor, and aims to construct an electric energy measuring system with any scale through the electric energy sensor with the tee-joint array structure, divide an electric energy measuring system with a large scale into a plurality of electric energy arrays with small scales through the electric energy sensor with the tee-joint array structure, meet a relative energy conservation law for each electric energy array, respectively calculate errors of the electric energy sensor in each electric energy array, weaken multiple collinearity influences of electric energy data calculation caused by similar habits of using electric energy of users, improve the calculation efficiency and the calculation precision, and solve the technical problem of multiple collinearity of electric energy data.

In order to achieve the above object, 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 an electric energy shunting structure with 1 inlet and 2 outlets, and the electric energy shunting structure constitutes an electric energy system conforming to an electric energy conservation relation, where electric energy sensing units are respectively disposed on pipeline branches with 1 inlet and 2 outlets, and a calculation of a metering error of the electric energy sensing unit is completed by connecting an error reference standard device in series to 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 with the three-way array structure by utilizing electric energy data detected by the electric energy sensor with the three-way array structure and an error reference standard device, compensating newly measured electric energy data by utilizing the electric energy measurement errors obtained by calculation, and continuously and iteratively calculating the measurement errors of the electric energy sensing units to obtain the electric energy sensor with the three-way array structure without errors or the like;

the electric energy sensor with the three-way array structure is used for constructing an electric energy system with a measurable electric energy error, and the array layout of the electric energy system with the measurable electric energy error is completed in a mode of cascading the electric energy sensors with the three-way array structure.

In a second aspect, the present invention also provides an electric energy measuring system composed of electric energy sensors in a three-way array structure, in the electric energy measuring system provided with the electric energy sensors in the three-way array structure of claim 1, comprising: the electric energy sensor with the three-way array structure comprises at least two stages of electric energy sensors with 1 inlet and 2 outlets, wherein the electric energy sensor with the three-way array structure of each stage of 1 inlet and 2 outlets comprises 1 electric energy sensing general meter unit positioned at the inflow side and 2 electric energy sensing sub meter units positioned at the outflow side, and the 1 electric energy sensing general meter unit positioned at the inflow side and the 2 electric energy sensing sub meter units positioned at the outflow side form a relative electric energy conservation relation;

the electric energy sensor with the three-way array structure comprises two adjacent stages of electric energy sensors with 1 inlet and 2 outlet, wherein the electric energy sensing sub-meter unit positioned on the outlet side in the electric energy sensor with the three-way array structure with 1 inlet and 2 outlet on the upper stage is the electric energy sensing main meter unit positioned on the inlet side in the electric energy sensor with the three-way array structure with 1 inlet and 2 outlet on the lower stage.

Preferably, the electric energy measuring system comprises n electric energy sensors with a three-way array structure, wherein every two electric energy sensors with the three-way array structure are mutually independent;

the electric energy measuring system also 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 structure electric energy sensors.

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

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

when the error reference standard device is arranged on a pipeline branch of a three-way array structure from the middle stage 1 to the inlet 2, a reference error value is transmitted in a mode of progressive calculation from the middle stage to the upper stage and in a mode of progressive calculation from the middle stage to the lower stage so as to calibrate the electric energy measuring system and obtain error-free data or equal error data.

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

In a third aspect, the present invention further provides a method for measuring an electric energy system formed by a three-way array structure, where the electric energy system formed by electric energy sensors of the three-way array structure includes: the electric energy sensor with the three-way array structure comprises at least two stages of electric energy sensors with 1 inlet and 2 outlets, wherein the electric energy sensor with the three-way array structure of each stage of 1 inlet and 2 outlets comprises 1 electric energy sensing general meter unit positioned at the inflow side and 2 electric energy sensing sub meter units positioned at the outflow side, and the 1 electric energy sensing general meter unit positioned at the inflow side and the 2 electric energy sensing sub meter units positioned at the outflow side form a relative electric energy conservation relation;

aiming at the three-way array structure of the two adjacent stages 1 in and 2 out, the electric energy sensing sub-meter unit positioned on the outflow side in the three-way array structure of the upper stage 1 in and 2 out is an electric energy sensing main meter unit positioned on the inflow side in the three-way array structure of the lower stage 1 in and 2 out;

the error checking method comprises the following steps:

an error reference standard device is appointed or established in the electric energy measuring system, and a reference error value is given to the error reference standard device;

acquiring original measurement data of 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 which has a relation of 1 in 2 out at the previous stage or the next stage with the electric energy sensor of the three-way array structure which has been calculated to obtain a reference measurement error value, and calculating to obtain the reference measurement error value of the electric energy sensing unit in the corresponding three-way array structure of 1 in 2 out at the 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 three-way array structure with 1 inlet and 2 outlets by one or more times of the previous stage or the next stage to obtain the reference measurement error values of all the electric energy sensing units in the three-way array structure in the electric energy measurement system, and compensating the original measurement data according to the reference measurement error value of the electric energy sensing unit in each three-way array structure to obtain 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 equal error data or error-free data includes:

compensating the 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 a delta X deviation exists between a real error value and a reference error value of the error reference standard device, compensating equal error data of each corresponding electric energy sensing unit by utilizing the delta X deviation to obtain error-free data; alternatively, the first and second electrodes may be,

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

Preferably, the obtaining of the Δ X deviation between the real error value and the reference error value of the error reference standard device specifically includes:

taking down the selected electric energy sensing unit as an error reference standard device, and measuring the real error value of the taken-down electric energy sensing unit; and subtracting the reference error value of the selected electric energy sensing unit from the real error value of the taken-down electric energy sensing unit to obtain the delta X deviation.

Preferably, the error reference standard means and the assigned reference error value are determined as follows:

a first electric energy sensing unit with a known real error value is connected in series with any pipeline branch of any one electric energy sensor of a three-way array structure of the electric energy measuring system;

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

and the electric energy sensing units on the selected pipeline branches are used as error reference standard devices, and the real error of each connected electric energy sensing unit in the electric energy measuring system is calculated by using the calculated real error value of the electric energy sensing units on the selected pipeline branches.

Preferably, the error is referenced to a reference error value of a standard device, and comprises:

in the electric energy measuring system, after any electric energy sensing unit is selected as an error reference standard device, a preset reference error value is matched with a measuring 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 real error value of the error reference standard device is equal to the delta X deviation.

Preferably, the measuring method of the electric energy measuring system constituted by the three-way array structure further includes:

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

if the similarity of at least two groups of original measurement data is greater than a preset similarity threshold, the measurement error of each electric energy sensing unit is calculated in a cascade mode in a grading calculation mode so as to verify 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 last stage 1-in-2-out tee array structure and the electric energy sensing general meter in the top stage 1-in-2-out tee array structure utilize a relative electric energy conservation relation to obtain the measurement error of the corresponding electric energy sensing unit so as to verify the original measurement data.

Generally, compared with the prior art, the technical scheme of the invention has the following beneficial effects: the invention provides an electric energy sensor with a three-way array structure, a measuring system and a measuring method formed by the electric energy sensor, wherein the electric energy measuring system comprises at least two stages of electric energy sensors with the three-way array structure, the electric energy sensor with the three-way array structure can be used for constructing an electric energy measuring system with any scale, the electric energy measuring system with a large scale can be divided into a plurality of electric energy arrays with small scales through the electric energy sensor with the three-way array structure, each electric energy array meets the relative energy conservation law, errors of the electric energy sensors in each electric energy array are respectively calculated, multiple collinearity influences facing electric energy data calculation caused by similar habits of using electric energy by users are weakened, and the calculation efficiency and the calculation precision are improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a schematic structural diagram of a three-way array electrical energy sensor;

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

FIG. 3 is a schematic 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 structural diagram of another electricity meter box provided by the embodiment of the invention;

fig. 6 is a schematic structural diagram of a measurement method of an electric energy system formed by a three-way array according to an embodiment of the present invention;

FIG. 7 is a flowchart illustrating a first implementation manner of step 10 in FIG. 6 according to an embodiment of the present invention;

fig. 8 is a schematic flow chart of a second implementation manner of step 10 in fig. 6 according to an embodiment of the present invention;

fig. 9 is a schematic flowchart of a third implementation manner of step 10 in fig. 6 according to an embodiment of the present invention;

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

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict 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 for determining the error in the description is to be used as an error reference standard for breaking a homogeneous equation in the calculation process in a certain sense. Whether using physical experimentation or mathematical calculation, the measurement of any one quantity is relative to a reference; the detection of any one measurement error is relative to an error reference, and the standard or data for the error reference is referred to as the error reference. For example, a "standard meter" in the experiment of error checking of the conventional electric energy meter is an error reference standard. When the error is calculated by using the electric energy data, the data error of the electric energy sensor used as the reference datum data is the error reference standard calculated at this time.

The equal error data according to the present invention means: for any sensor with errors, after the measurement error of the sensor is detected, the detected error value is used for carrying out error calibration processing on the original measurement data (the original measurement data has errors) of the sensor, and the errors of all the obtained calibrated electric energy data are equal to the errors caused by the detection error method. These calibrated power data are referred to as "equal error" data. The "equal error" is equal to the error value of the error reference standard itself (also described as Δ X deviation in embodiments of the invention). Under the concept of equal error, after error calibration processing, the measurement error of each electric energy data of the sensing system is the same. The equal error concept is an effective theory which is put forward by the inventor after years of research in the field of sensing systems.

The error-free data of the invention refers to: for any equal error data, when its "equal error" is measured and calibrated, the obtained data is the error-free data. Considering that it is theoretically impossible to have absolute error-free data, it can be said in other words that error-free data is data with no or negligible errors.

Example 1:

an electric energy sensor with a three-way array structure is disclosed, as shown in fig. 2, the electric energy sensor with a three-way array structure comprises an electric energy shunting structure with 1 inlet and 2 outlets, and the electric energy shunting structure constitutes an electric energy system conforming to the conservation relation of electric energy, wherein, electric energy sensing units are respectively arranged on pipeline branches of 1 inlet and 2 outlets (the electric energy sensing units on the pipeline branches at the inlet are also described as 'electric energy sensing general meter units' in other embodiments of the invention, while the electric energy sensors on the pipeline branches at the 2 outlets are also described as 'electric energy sensing sub meter units'), the calculation of the measuring 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 series error reference standard devices are only used for calculating the measuring errors of each electric energy sensing unit in the electric energy sensor with a three-way array structure, therefore, it can be understood that, in a factory condition, the error reference standard device does not need to be arranged on any pipeline branch of the electric energy sensor with the three-way array structure, and it will be found by the test system in embodiment 2 and the test method in embodiment 3 later in the present invention that, in a specific application scenario, the embodiment of the present invention can calculate the metering error of the electric energy sensor with the three-way array structure in the whole system in a more ingenious manner, which is not described herein in more detail), 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 with the three-way array structure by utilizing electric energy data detected by the electric energy sensor with the three-way array structure and an error reference standard device, compensating newly measured electric energy data by utilizing the calculated errors, continuously and iteratively calculating the measurement errors of the electric energy sensing units, and obtaining the electric energy sensor with the three-way array structure without errors or the like; it is based on the principle that the measurement error of the electric energy sensing unit is continuously calculated in an iterative manner until the difference between the results of the calculated error values of the two times is smaller than a preset value (the preset value is obtained according to experience and test experiments, and is not specifically described here), 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 can construct an electric energy measuring system with any scale, the electric energy measuring system with a large scale can be divided into a plurality of electric energy arrays with small scales through the electric energy sensor with the three-way array structure, each electric energy array meets the relative energy conservation law, errors of the electric energy sensor in each electric energy array are calculated respectively, multiple collinearity influences of electric energy data calculation caused by similar habits of using electric energy of users are weakened, and the calculating efficiency and the calculating precision are improved.

Example 2:

the present invention also provides an electric energy measuring system including an electric energy sensor having a three-way array structure, as shown in fig. 2, in the electric energy measuring system provided with the electric energy sensor having the three-way array structure described in embodiment 1, the electric energy measuring system includes: the electric energy sensor with the three-way array structure comprises at least two stages of electric energy sensors with 1 inlet and 2 outlets, wherein the electric energy sensor with the three-way array structure of each stage of 1 inlet and 2 outlets comprises 1 electric energy sensing general meter unit positioned at the inflow side and 2 electric energy sensing sub meter units positioned at the outflow side, and the 1 electric energy sensing general meter unit positioned at the inflow side and the 2 electric energy sensing sub meter units positioned at the outflow side form a relative electric energy conservation relation;

The embodiment of the invention provides a measuring system formed by electric energy sensors of a three-way array structure, wherein the electric energy sensors of the three-way array structure can be used for constructing an electric energy measuring system of any scale, the electric energy measuring system with a large scale can be divided into a plurality of electric energy arrays with small scales through the electric energy sensors of the three-way array structure, each electric energy array meets the relative energy conservation law, errors of the electric energy sensors in each electric energy array are calculated respectively, multiple collinearity influences of electric energy data calculation caused by similar habits of using electric energy of users are weakened, and the calculating efficiency and the calculating precision are improved.

In combination with the embodiment of the present invention, there is a preferred implementation scheme, where the electric energy measurement system includes n electric energy sensors of a three-way array structure, where every two electric energy sensors of the three-way array structure are independent of each other;

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

In combination with the embodiment of the present invention, there is a preferred implementation scheme, where the electric energy measurement system includes a microprocessor and a data transmission module, the microprocessor is connected to each electric energy sensing unit, and the data transmission module is connected to the microprocessor, and is used for calculating an error edge of the electric energy sensing unit in 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.

Example 3:

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

the measuring method of the electric energy system formed by the three-way array structure comprises the following steps:

The embodiment of the invention provides a measuring method formed by electric energy sensors of a three-way array structure, wherein the electric energy sensors of the three-way array structure can be used for constructing an electric energy measuring system of any scale, the electric energy measuring system with a large scale can be divided into a plurality of electric energy arrays with small scales through the electric energy sensors of the three-way array structure, each electric energy array meets the relative energy conservation law, errors of the electric energy sensors in each electric energy array are calculated respectively, multiple collinearity influences of electric energy data calculation caused by similar habits of using electric energy of users are weakened, and the calculating efficiency and the calculating precision are improved.

In combination with the embodiment of the present invention, there is an optional extension, where 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 expansion scheme exists in combination with the embodiment of the invention, and the delta X deviation between the real error value and the reference error value of the error reference standard device is obtained, specifically:

An optional extension exists in conjunction with the embodiments of the present invention to determine an error reference standard device and a reference error value assigned thereto, specifically:

An optional extension exists in conjunction with the embodiments of the present invention, where the reference error value of the error reference standard device includes:

In combination with the embodiment of the present invention, there is an optional extension, and the measurement method of the electric energy measurement system constituted 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, the electric energy sensors in the three-way array structure with the last stage 1 in and 2 out are divided into sub-meters, and the electric energy sensing general meter in the three-way array structure with the top stage 1 in and 2 out and the electric energy sensing general meter utilize the relative electric energy conservation relation to obtain the measurement error of the corresponding electric energy sensor so as to check the original measurement data.

An optional extension scheme exists in combination with the embodiment of the invention, and after the layout of the three-way array structure in the electric energy system is completed, and the electric energy measurement error calculation of the electric energy sensing units respectively arranged on the 1 inlet line and the 2 outlet lines is completed, the continuous iterative calculation of the error of the electric energy metering device in the electric energy system on the corresponding pipeline branch is completed by using the metering data after the error correction in the three-way array structure.

Example 4:

at present, when the scale of an electric energy measurement system is large, due to the similarity of electric energy consumption habits of users, the problem of multiple collinearity of electric energy meter data is derived, so that not only can the calculation efficiency be reduced, but also the calculation accuracy of the data calculation method is influenced. In order to solve the foregoing problems, in an embodiment, an electric energy measurement system convenient for error calibration is provided, and in practical use, the electric energy measurement system of a pipeline branch with an electric energy sensor is configured into a structure integrating a plurality of subsystems convenient for error calculation, and the electric energy measurement system includes at least two stages of electric energy sensors with a 1-in-2-out three-way array structure, where the electric energy sensor with the 1-in-2-out three-way array structure can not only configure an electric energy measurement system of any scale, but also divide an electric energy measurement system with a large scale into a plurality of electric energy arrays with a small scale through the electric energy sensor with the 1-in-2-out three-way array structure, and each electric energy array satisfies a relative energy conservation law, calculates errors of the electric energy sensors in each electric energy array, and can effectively reduce multiple collinearity problems of electric energy data.

Wherein the plurality of power sensors for each power array conform to a correct network topology relationship. The network topology relationship refers to the connection and the affiliation relationship between the inflow side electric energy sensing unit and the outflow side electric energy sensing unit, wherein the concept of the inflow side electric energy sensing unit and the outflow side electric energy sensing unit is relatively speaking, and is a relationship between an electric energy general meter and an electric energy sub meter.

With reference to fig. 2, a schematic structural diagram of the electric energy measurement system of the present embodiment is described, and the electric energy measurement system includes: the electric energy sensor with the three-way array structure comprises at least two stages of electric energy sensors with 1 inlet and 2 outlets, wherein the electric energy sensor with the three-way array structure of each stage of the 1 inlet and 2 outlets comprises 1 electric energy sensing general meter unit positioned at an inflow side and 2 electric energy sensing sub meter units positioned at an outflow side, and the 1 electric energy sensing general meter unit positioned at an inlet side and the 2 electric energy sensing sub meter units positioned at an outlet side form a relative energy conservation relation.

The electric energy sensing sub-meter unit positioned on the outflow side in the electric energy sensor of the three-way array structure with the inlet 1 and the outlet 2 of the previous stage is an electric energy sensing main meter unit positioned on the inflow side in the three-way array structure with the inlet 2 of the next stage 1, aiming at the three-way array structure with the inlet 2 and the outlet 2 of the two adjacent stages 1.

In this embodiment, the upper stage and the lower stage are relative concepts, wherein the electric energy sensor excluding the electric energy sensor at the uppermost stage and the electric energy sensor at the last stage, and the electric energy sensor located in the middle, among the electric energy sensors of different 1 in 2 out three-way array structures, may be dependent on the electric energy sensor of the 1 in 2 out three-way array structure at the upper stage, or may be dependent on the electric energy sensor of the 1 in 2 out three-way array structure at the lower stage, and when a certain electric energy sensing unit is dependent on the electric energy sensor of the 1 in 2 out three-way array structure at the upper stage, the electric energy sensing unit is an electric energy sensing sub-meter unit; when a certain electric energy sensing unit belongs to the electric energy sensor with the three-way array structure with the inlet and the outlet of the next stage 1, the electric energy sensing unit is an electric energy sensing general meter unit.

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

For a 1 inflow line and 2 outflow line power measurement system, the power conforms to the relative power conservation relationship, i.e., the following equation is satisfied:

wherein w is in the above formula₀，x₀And w_i，x_iAnd the data and the errors respectively represent the original measurement data and the errors corresponding to the 1 electric energy sensing general meter unit and the ith electric energy sensing sub meter unit.

In the foregoing formula, x₀And x_iAny one of the reference measurement error values is a known value, and the reference measurement error value of other electric energy sensing units can be obtained by reading data for not less than 2 times.

The reference measurement error value obtained by calculation is used for compensating the readings of the electric energy sensing general meter unit and the electric energy sensing sub-meter, so that electric energy data without errors or the like can be obtained:

w′₀＝w₀(1+x₀)

w′_i＝w_i(1+x_i)

wherein, w'₀And w'_iRespectively representing the electric energy data of the compensated electric energy sensing general meter unit and the electric energy sensing sub-meter, wherein the compensated data also meet the relative energy conservation relation:

in the foregoing calculation process, an error reference standard device needs to be set, and error-free data or equal error data can be obtained by the error reference standard device, so as to perform error correction on the electric energy measurement system.

The selection or setting of the error reference standard device at least comprises the following modes: a cascade computing transfer method; a method of sharing a standard; a standard method of concatenation; and (4) a post correction method.

The cascade computation transfer method comprises the following steps: 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 from the inlet 1 to the outlet 2 of a certain stage, and giving a reference error value to the error reference standard device.

Specifically, when the error reference standard device is arranged on a pipeline branch of the electric energy sensor with the three-way array structure from the last stage 1 to the last stage 2, a reference error value is transmitted in a mode of progressive calculation from the lower stage to the upper stage so as to calibrate the electric energy measuring 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 with the three-way array structure with the top level 1 inlet and the top level 2 outlet, a reference error value is transmitted in a mode of progressive calculation from the upper level to the lower level so as to calibrate the electric energy measuring system and obtain error-free data or equal error data. In a preferred embodiment, the error reference standard device may be disposed at the middle stage, so that the calibration may be performed from the middle stage to both ends, and the calculation efficiency may be improved, specifically, when the error reference standard device is disposed on the pipeline branch of the electric energy sensor of the three-way array structure at the

middle stage

1, 2, the reference error value is transmitted by a manner of calculation from the middle stage to the upper stage, and by a manner of calculation from the middle 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, a "1" in the electrical energy sensor of the three-way array structure with 1 in 2 out at each lower level (for which the reference measurement error value has been calculated) may be a subset of a "2" in the electrical energy sensor of the three-way array structure with 1 in 2 out at another upper level (for which the error is yet to be calculated); similarly, a subset of "2" in each of the three-way array structure power sensors at the upper level (which has calculated the reference measurement error value) 1 in 2 out may be "1" in another lower level (which has yet to calculate the error value) 1 in 2 out three-way array structure power sensor. In this way, the reference error value is transmitted in a cascading manner, and the electric energy sensing units in each independent electric energy sensor with the three-way array structure of 1 inlet and 2 outlets are verified respectively.

When the error reference standard device has a delta X deviation between the real error value and the reference error value, the delta X deviation is used for compensating the equal error data of each corresponding electric energy sensing unit to obtain error-free data. When the reference error value of the error reference standard device is the same as the real error value of the error reference standard device, the error-free data corresponding to each electric energy sensing unit is obtained by calculation directly according to the real error value of the error reference standard device.

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

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

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

For example, referring to fig. 3, the corresponding circuit structure design may perform pipeline branch switching by controlling on/off of the corresponding switch. As shown in fig. 3, taking the 1 in 2 out three-way array structure power sensor as an example for explanation, the power sensor of the first 1 in 2 out three-way array structure and the power sensor of the second 1 in 2 out three-way array structure are independent from each other, the error reference standard device is connected in series to one of the pipeline branches of the power sensor of the first 1 in 2 out three-way array structure and the power sensor of the second 1 in 2 out three-way array structure, a switch K1 is arranged on the pipeline branch of the power sensor of the first 1 in 2 out three-way array structure, a switch K1 is connected in parallel with the error reference standard device, the switch K1 and the error reference standard device are both connected in series to the power sensing unit on the selected pipeline branch, and a switch K2 is arranged between the error reference standard device and the power sensing unit on the selected pipeline branch; meanwhile, a switch K3 is arranged on a pipeline branch of the electric energy sensor with the three-way array structure of the second 1 inlet and the second 2 outlet, a switch K3 is connected with the error reference standard device in parallel, the switch K3 and the error reference standard device are both connected with the electric energy sensing unit on the selected pipeline branch in series, and a switch K4 is arranged between the error reference standard device and the electric energy sensing unit on the selected pipeline branch. The switches K1-K4 can be switch channels of relays, and the relays control the on-off of the corresponding switches K1-K4.

In practical 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 the pipeline branch corresponding to the electric energy sensor of the three-way array structure of the first 1 in 2 out, and as an error reference standard, the error checking is carried out on the electric energy sensing unit in the electric energy sensor of the three-way array structure of the first 1 in 2 out.

In practical 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 the pipeline branch corresponding to the electric energy sensor of the three-way array structure of the second 1 in 2 out, and as an error reference standard, the error checking is carried out on the electric energy sensing unit in the electric energy sensor of the three-way array structure of the second 1 in 2 out.

In the embodiment, the error calibration of the two mutually independent 1-in-2-out three-way array structure electric energy sensors can be completed through one error reference standard device, and the normal work of each other is not influenced. In the 1-in and 2-out three-way array structure of the power sensor, the method of sharing the standard is similar, and the detailed description is omitted here.

Wherein, the standard method of concatenation refers to: the electric energy sensor with known errors is connected in series to any pipeline branch of the electric energy sensors with the three-way array structure with the inlet 1 and the outlet 2, and the electric energy sensors are used as error reference standard devices, so that the electric energy sensor error calculation with the three-way array structure with the inlet 1 and the outlet 2 can be completed.

The post correction method comprises the following steps: selecting 1 pipeline branch electric energy sensing unit in the electric energy sensor with the three-way array structure of 1 inlet and 2 outlet, giving a reference error value to the electric energy sensing unit, and calculating the errors of all the electric energy sensing units of the electric energy sensor with the three-way array structure of 1 inlet and 2 outlet. The selected pipeline branch electric energy sensing unit is taken down from the electric energy sensor with the three-way array structure of the inlet 1 and the outlet 2, the real error value of the selected pipeline branch electric energy sensing unit is measured by using a standard experimental method, the deviation delta X between the selected pipeline branch electric energy sensing unit and the selected pipeline branch electric energy sensing unit can be calculated by using the set reference error value and the real error value of the selected pipeline branch electric energy sensing unit, the error of all the electric energy sensing units can be corrected by using the deviation delta X, the real error of all the electric energy sensing units can be obtained, and then the original measurement data is corrected, so that error-free data can be obtained.

Furthermore, the electric energy measuring system comprises a microprocessor and a data transmission module, the microprocessor is connected with each electric energy sensing unit, and the data transmission module is connected with the microprocessor and used for sending the electric energy data collected by the microprocessor from each electric energy sensing unit to the cloud server.

And the I/O ports with the preset number in the microprocessor are set to be connected with the data transmission ends of the electric energy sensors with the preset number. The acquisition end of the sub-meter of the electric energy sensor positioned at the last stage is coupled with a user line and/or a user pipeline which are responsible for detection and 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 sends the detection data collected from the electric energy sensing units to the cloud server when necessary.

With the combination of 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 2-out tee-joint array structure, wherein the electric energy sensors with the 1-in 2-out tee-joint array structure can not only construct an electric energy measurement system with any scale, but also 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 2-out tee-joint array structure, each electric energy array meets the relative energy conservation law, the error of the electric energy sensing unit in each tee-joint array structure is respectively calculated, the multiple collinearity influence of electric energy data calculation caused by similar habits of using electric energy by users is weakened, and the calculation efficiency and the 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 scenarios, 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, and the electric energy sensor with the three-way array structure of 1 in and 2 out is used as an error-free sensor system by utilizing calculation error and error compensation to check the error of the electric energy sensor connected in series on a pipeline branch of the electric energy meter; the electric energy sensor with the three-way array structure with the inlet 1 and the outlet 2 can be used as a subsystem of a reticular electric energy sensor system; the electric energy meter is designed and manufactured by adopting the principle of the electric energy sensor with the three-way array structure of 1 inlet and 2 outlet.

In addition, the electric energy sensors of the three-way array structure with 1 inlet and 2 outlets can be connected in an expanding way, and the method for cascading expanding the electric energy measuring system comprises the following steps: the electric energy measuring system capable of measuring the errors of the electric energy sensors can be constructed by cascading 2 electric energy sensors with a 1-in-2-out tee array structure, specifically, a '1' in the electric energy sensors with the 1-in-2-out tee array structure of the lower level is connected to the electric energy sensors with the 1-in-2-out tee array structure of the upper level (the error is yet to be calculated) to become a sub-part of the '2', and 2 electric energy sensors with the 1-in-2-out tee array structure are connected to form 1 new electric energy measuring system, wherein the error values of all the electric energy sensors can be obtained through calculation.

In addition, the 1-in-2-out three-way array structure electric energy sensor can cope with sensor burst faults, for example, for 3 electric energy sensing units in the 1-in-2-out three-way array structure electric energy sensor, if the jth electric energy sensing unit has a burst fault and loses the function of electric energy measurement, the electric energy data w 'of the burst fault electric energy sensor can be obtained by the following formula'_j：

By the aid of the mode, the risk that the electric energy data are lost due to work of the electric energy sensor can be avoided.

In this embodiment, a minimum electric energy measurement system can be constructed by the electric energy sensor with the three-way array structure with 1 inlet and 2 outlets, the scale of the electric energy measurement system is reduced as much as possible, multiple collinear influences of electric energy data calculation caused by similar habits of using electric energy by users are weakened, and the error calculation accuracy of the electric energy sensor is improved.

The use of a three-way array configuration of power sensors with 1 in and 2 out in an electrical meter box is illustrated below.

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

Combine fig. 5, the product form of another kind of ammeter case has been demonstrated, electric energy sensing unit specifically can be sampling resistor, acquire user's power consumption condition through sampling resistor, wherein, last one-level 1 advances 2 three way array structure's electric energy sensor's sampling resistor (branch table) is used for coupling with user's circuit, with the power consumption condition of detection user, other level 1 advances 2 three way array structure's electric energy sensor's sampling resistor of structure and all integrates and set up in the school table ware, furthermore, ammeter case still includes the user ammeter, the user ammeter is connected with the sampling resistor who is located the most end, with the power consumption that shows the user. So divide large-scale power supply system into a plurality of little power supply systems, the school table ware can carry out the school table in grades when carrying out the school table, has reduced the data handling capacity at every turn, can promote computational efficiency, moreover, can weaken the multiple collinearity influence that the custom similarity that the user used the electric quantity caused electric energy data to calculate to face.

The ammeter case that figure 5 demonstrates has set up the user's ammeter in user's side, and the user's ammeter is used for showing user's power consumption, and the user can learn its power consumption condition through the electric quantity display of user's ammeter, and to a certain extent, provides the convenience for the user. However, at present, the user electric meter is generally arranged at a fixed position of a building, and the user generally cannot see the display of the user electric meter, that is, the electric meter box in the form of fig. 5 has a display function which is not used, and the electric meter box shown in fig. 4 can be popularized to reduce the cost while ensuring the electric quantity detection function.

Wherein, the ammeter case that figure 4 demonstrates does not set up the user's ammeter in user's side, promptly, does not have for being used for providing the function that shows the electric quantity, when the user need acquire its power consumption condition, can establish the connection with corresponding cloud server, acquires its power consumption condition through the network, so, can reduce this part of user's ammeter, also can reduce the installation of user's ammeter moreover, can reduce product cost and installation cost greatly.

Example 6:

with reference to the electric energy measurement system of the foregoing embodiment, this embodiment provides a measurement method of an electric energy measurement system formed by a three-way array structure of the electric energy measurement system, where the electric energy measurement system includes: the electric energy sensor with the three-way array structure comprises at least two stages of electric energy sensors with 1 inlet and 2 outlet, wherein the electric energy sensor with the three-way array structure of each stage of 1 inlet and 2 outlet comprises an electric energy sensing general meter unit positioned on an inlet side and 2 electric energy sensing sub meter units positioned on an outlet side, and the electric energy sensing general meter unit positioned on an inlet side and the 2 electric energy sensing sub meter units positioned on an outlet side form a relative energy conservation relation; the electric energy sensor with the three-way array structure comprises two adjacent stages of electric energy sensors with 1 inlet and 2 outlet, wherein an electric energy sensing sub-meter unit positioned on the outlet side in the electric energy sensor with the three-way array structure with 1 inlet and 2 outlet at the previous stage is an electric energy sensing main meter unit positioned on the inlet side of the electric energy sensor with the three-way array structure with 1 inlet and 2 outlet at the next stage;

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 designated or established in the electric energy measurement system and is assigned a reference error value.

In this embodiment, in order to calibrate the raw data, an error reference standard device needs to be set first, and then the raw 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 several ways to set the error reference standard.

The first method is as follows: by using 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, and obtaining a Δ X 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: and removing the selected electric energy sensing unit from the electric energy measuring system, and measuring the real error value of the selected electric energy sensing unit.

Referring to fig. 2, the electric energy measurement system includes a large number of electric energy sensing units, wherein each stage of electric energy sensors with a three-way array structure of 1 inlet and 2 outlet includes 3 electric energy sensing units, one electric energy sensing general meter is used for measuring energy at an inlet side, 2 electric energy sensing sub meters are used for measuring energy at an outlet side, and the 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 with the inlet and the outlet of each stage 1, one electric energy sensing unit can be selected from 3 electric energy sensing units to serve as an error reference standard device.

Step 1112: and subtracting the reference error value of the selected electric energy sensing unit from the real error value of the selected electric energy sensing unit to obtain the delta X deviation.

In an alternative embodiment, a numerical value is automatically designated as a reference error value according to an actual situation, or a numerical value is selected from a standard measurement error interval as the reference error value. The reference error value may be different from the actual measurement error of the electric energy sensing unit, and the actual measurement error of the electric energy sensing unit cannot be truly reflected. And the difference value between the reference error value of the error reference standard device and the real error value of the error reference standard device is equal to the Delta X deviation.

The second method comprises the following steps: by using a series standard method, the error reference standard determining device is specifically configured to connect a first electric energy sensing unit with a known real error value in series with a pipeline branch where any one electric energy sensor in the electric energy measurement system is located, and then calculate to obtain a reference measurement error of each electric energy sensing unit in the electric energy measurement system, as shown in fig. 8, the specific electric energy measurement system includes:

step 1121: and 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 in the running process of the electric energy measuring system, and calculating the real error value of the electric energy sensing unit on the selected pipeline branch.

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

Compared with the first mode, the second mode is more suitable for the example scene of the specific application, but in the implementation process of the second mode, it is also recommended to arrange an interface for intervention in the first electric energy sensing unit in a certain pipeline branch or a plurality of pipeline branches of the existing electric energy measuring system.

The third method comprises the following steps: by adopting a cascade computing and transferring method, if the electric energy measuring system and the adjacent first electric energy measuring system and/or second electric energy measuring system can construct a relative second electric energy conservation environment, the error reference standard determining device is specifically that an electric energy sensor with a known real error value is arbitrarily selected from the first electric energy measuring system and/or the second electric energy measuring system to serve as the error reference standard device; then, 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 using the electric energy measuring system and each electric energy sensor in the adjacent first electric energy measuring system and/or second electric energy measuring system.

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

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

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

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

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

In the embodiment, the error calibration of the two mutually independent 1-in-2-out three-way array structure electric energy sensors can be completed through one error reference standard device, and the normal work of each other is not influenced.

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

Step 11: and acquiring 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 transmitted to the database server. Wherein, because the electric energy sensing unit has the error, correspondingly, the raw measurement data has the error.

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

In this embodiment, a cascade progressive calculation mode 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 problem of co-linearity caused by the similarity of the user power data may be reduced.

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

Step 14: and calculating the reference measurement error value process of the electric energy sensor in the three-way array structure of 1 in and 2 out through one or more times of the previous stage or the next stage to obtain 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 reference measurement error value is used for compensating the corresponding original measurement data to obtain equal error data of the reference error value of each electric energy sensing unit relative to the error reference standard device; when delta X deviation exists between a real error value and a reference error value of the error reference standard device, compensating equal error data of each corresponding electric energy sensor by utilizing the delta X deviation to obtain error-free data; alternatively, the first and second electrodes may be,

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

When the error reference standard devices are arranged in different modes, the data calibration mode corresponding to the step 12 also has a difference.

When the error reference standard device is set in the second mode or the standard meter is directly quoted 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 real error value of each electric energy sensing unit, and then the corresponding original measurement data is calibrated based on the real error value of each electric energy sensing unit to obtain error-free data.

When the error reference standard device is selected in the above manner, a 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 a real error value. And according to the electric energy measuring system, the compensated electric energy data corresponding to each electric energy sensing unit is equal error data, and error-free data can be obtained after the equal errors need to be eliminated.

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

In this embodiment, after the Δ X deviation is obtained, the compensated power data of each power sensing unit is calibrated according to the Δ X deviation to obtain error-free power data of each power sensor, where the error-free power data is data with no error theoretically or data with negligible error.

Example 7:

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

The processor 41 and the memory 42 may be connected by a bus or other means, and fig. 10 illustrates the connection by a bus as an example.

The memory 42 serves as a storage medium for storing a nonvolatile computer readable, and may be used to store a nonvolatile software program and a nonvolatile computer executable program, such as the measurement methods in embodiments 2 to 6. Processor 41 executes the measurement method by executing non-volatile software programs and instructions stored in memory 42.

The 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, for the information interaction, execution process and other contents between the modules and units in the apparatus and system, the specific contents may refer to the description in the embodiment of the method of the present invention because the same concept is used as the embodiment of the processing method of the present invention, and are not described herein again.

Those of ordinary skill in the art will appreciate that all or part of the steps of the various methods of the embodiments may be implemented by associated hardware as instructed by a program, which may be stored on a computer-readable storage medium, which may include: a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and the like.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a tee bend array structure's electric energy sensor, its characterized in that, tee bend array structure's electric energy sensor includes 1 electric energy reposition of redundant personnel structure that advances 2 plays, and electric energy reposition of redundant personnel structure has constituted an electric energy system that accords with the conservation of electric energy relation, wherein, is provided with electric energy sensing unit respectively on the pipeline branch of 1 import and 2 exports, concatenates the mode of error reference standard device or the mode of appointed error reference standard device and accomplishes the calculation of electric energy sensing unit metering error on arbitrary pipeline branch, it is specific:

2. An electric power measuring system formed by electric power sensors of a three-way array structure, characterized by comprising, in an electric power measuring system provided with the electric power sensors of the three-way array structure of claim 1: the electric energy sensor with the three-way array structure comprises at least two stages of electric energy sensors with 1 inlet and 2 outlets, wherein the electric energy sensor with the three-way array structure of each stage of 1 inlet and 2 outlets comprises 1 electric energy sensing general meter unit positioned at the inflow side and 2 electric energy sensing sub meter units positioned at the outflow side, and the 1 electric energy sensing general meter unit positioned at the inflow side and the 2 electric energy sensing sub meter units positioned at the outflow side form a relative electric energy conservation relation;

3. The electric energy measurement system formed by the electric energy sensors with the three-way array structure as claimed in claim 2, wherein the electric energy measurement system comprises n electric energy sensors with the three-way array structure, and the electric energy sensors with the three-way array structures are independent in pairs;

the electric energy measuring system also comprises an error reference standard device which is connected in series with a pipeline branch where the electric energy sensor in any one tee array structure of the n tee array structures is located.

4. The electric energy measurement system formed by the electric energy sensors of the three-way array structure as claimed in claim 2, characterized in that the electric energy measurement system further comprises an error reference standard device, and the error reference standard device is connected in series with any pipeline branch of the electric energy sensors of the three-way array structure;

5. The electric energy measurement system formed by the electric energy sensors with the three-way array structure as claimed in claim 2, wherein the electric energy measurement 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 error edge calculation of the electric energy sensing units with 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.

6. A measuring method of an electric energy measuring system formed by a 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 with the three-way array structure comprises at least two stages of electric energy sensors with 1 inlet and 2 outlets, wherein the electric energy sensor with the three-way array structure of each stage of 1 inlet and 2 outlets comprises 1 electric energy sensing general meter unit positioned at the inflow side and 2 electric energy sensing sub meter units positioned at the outflow side, and the 1 electric energy sensing general meter unit positioned at the inflow side and the 2 electric energy sensing sub meter units positioned at the outflow side form a relative electric energy conservation relation;

the error checking method comprises the following steps:

7. The method for measuring an electric energy measuring system with a three-way array structure according to claim 6, wherein the compensating the raw measurement data according to the reference measurement error value of each electric energy sensing unit to obtain equal error data or error-free data comprises:

8. The method of claim 7, wherein the Δ X deviation between the true error value and the reference error value of the error reference standard device is obtained by:

9. The method for measuring an electric energy measuring system formed by a three-way array structure according to claim 6, wherein an error reference standard device and a given reference error value are determined, and specifically:

10. The method of claim 6, wherein the error value of the reference standard device comprises:

11. The method of claim 6, further comprising: