CN114152787B - Electric energy meter structure for checking errors by users at home and error checking method - Google Patents
Electric energy meter structure for checking errors by users at home and error checking method Download PDFInfo
- Publication number
- CN114152787B CN114152787B CN202010935152.6A CN202010935152A CN114152787B CN 114152787 B CN114152787 B CN 114152787B CN 202010935152 A CN202010935152 A CN 202010935152A CN 114152787 B CN114152787 B CN 114152787B
- Authority
- CN
- China
- Prior art keywords
- electric energy
- error
- user
- module
- reference standard
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000005259 measurement Methods 0.000 claims abstract description 61
- 238000004364 calculation method Methods 0.000 claims abstract description 34
- 238000004134 energy conservation Methods 0.000 claims abstract description 19
- 238000013178 mathematical model Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000005265 energy consumption Methods 0.000 claims description 5
- 238000012937 correction Methods 0.000 claims description 3
- 238000011064 split stream procedure Methods 0.000 claims 4
- 230000008676 import Effects 0.000 claims 2
- 230000007306 turnover Effects 0.000 claims 2
- 230000008569 process Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000003491 array Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/17—Compensating for errors; Adjusting or regulating means therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention discloses an electric energy meter structure and an error checking method for checking errors of users. Establishing a mathematical model by utilizing an electric energy conservation relation of an electric energy system, and calculating an electric energy measurement error of the user electric energy metering module according to electric energy data detected by the user electric energy metering module, the auxiliary meter module and the error reference standard device of the three-way array structure; and compensating the newly measured electric energy data by the calculated error, and continuously and iteratively calculating the measurement errors of the user electric energy metering module and the auxiliary meter module to obtain the user electric energy metering module without errors or equal errors. The method provided by the invention can weaken the multiple collinearity influence of electric energy data calculation caused by the similar habit of using electric energy of users, and improve the calculation efficiency and calculation precision.
Description
Technical Field
The invention belongs to the technical field of intelligent meter measurement, and particularly relates to an electric energy meter structure for checking errors by a user at home and a checking error method.
Background
Currently, a large number of flow sensors, such as electricity meters, water meters, gas meters, or other flow meters, are used because they are too large to be removed back to the laboratory for detecting flow errors. There is a need to find techniques and methods for online detection of these flow sensor errors;
for the mathematical algorithm, when the flow measurement system is relatively large, a plurality of flow sensors are included in the flow measurement system, the similarity of the user flow consumption habits can derive the multiple collinearity problem of the flow meter data, and the calculation accuracy of the data calculation method is affected.
Conventionally, flow sensors are installed on the pipeline or at the nodes of the flow measurement system to be measured, and the flow of each point is measured, and the measurement error of each flow sensor is checked separately when needed. The problem with this approach is that the flow 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 meter structure and an error checking method for checking errors of users, which aim to calculate the errors of household electric energy meters in an electric energy array of each user's home through an electric energy sensor with a three-way array structure, weaken the multiple collinearity influence of electric energy data calculation caused by the habit similarity of using electric energy of the users, improve the calculation efficiency and the calculation precision, and solve 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 meter structure for checking errors of a user's own home, where the electric energy meter 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, a user electric energy metering module is disposed on 1 inlet pipeline, 2 auxiliary meter modules are disposed on 2 outlet pipelines, respectively, the user electric energy metering module or the auxiliary meter module on any one of the pipelines can be used as an error reference standard device or connected in series with the error reference device, and calculation of metering errors of the user electric energy metering module, the 2 auxiliary meter modules on a user electric wire and the error reference standard device is completed, specifically:
establishing a mathematical model by utilizing an electric energy conservation relation of an electric energy system, and calculating an electric energy measurement error of the user electric energy metering module according to electric energy data detected by the user electric energy metering module, the auxiliary meter module and the error reference standard device of the three-way array structure; and compensating the newly measured electric energy data by the calculated error, and continuously and iteratively calculating the measurement errors of the user electric energy metering module and the auxiliary meter module to obtain the user electric energy metering module without errors or equal errors.
The user electric energy metering module, the 2 auxiliary meter modules and the error reference standard device on the user electric wire are all the user electric energy metering module, the auxiliary meter module and the error reference standard device.
Preferably, the electric energy meter structure comprises a microprocessor and a data transmission module, wherein the microprocessor is connected with each user electric energy metering module, each auxiliary meter module and each error reference standard device, and the data transmission module is connected with the microprocessor and is used for calculating the error edge of the electric energy meter structure for checking errors at home and/or sending flow data collected from each user electric energy metering module, each auxiliary meter module and each error reference standard device to the cloud server.
Preferably, the compensating the original measurement data according to the reference measurement error value of the error reference standard device 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 reference error values of the electric energy metering module, the auxiliary meter module and the error reference standard device of each user 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 equivalent error data of the corresponding user electric energy metering modules, the auxiliary meter modules and the error reference standard device by utilizing the delta X deviation to obtain error-free data; or,
and directly calculating error-free data of the electric energy meter corresponding to the user self-checking errors of the three-way array structures according to the real error value of the error reference standard device.
Preferably, the error reference standard device comprises:
in the flow measurement system, after any one of the user electric energy metering module, the auxiliary meter module and the error reference standard device is selected as an error reference standard device, a preset reference error value is matched for the 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 the true error value of the error reference standard device is equal to DeltaX deviation.
Preferably, after completing the layout of the three-way array in the flow system and completing the calculation of the flow measurement errors of the user electric energy metering modules, the auxiliary meter modules and the error reference standard devices respectively arranged on the 1-inlet and 2-outlet lines, the continuous iterative calculation of the errors of the flow metering devices in the flow system on the corresponding pipelines is completed by using the metering data with corrected errors in the three-way array.
Preferably, the pipeline of the second outlet where the error reference standard device is located is led out from a single pipeline which is originally only provided with the user electric energy metering module; after passing through the node position of the corresponding leading-out second outlet pipeline, the original single pipeline forms a first outlet pipeline corresponding to the second outlet pipeline, and a first auxiliary table module is additionally arranged on the corresponding first outlet pipeline;
and a second auxiliary meter module is arranged on the second outlet pipeline, an error reference standard device can be additionally arranged on the first auxiliary meter module or the second auxiliary meter module pipeline, and an electric appliance with the working state meeting the preset condition is selected as energy consumption equipment on the second outlet pipeline.
Preferably, the first outlet pipeline and the second outlet pipeline are respectively preloaded with respective live wire connecting terminals.
Preferably, if the user is provided with a branching device at home, the corresponding branching device is used for respectively transmitting the electric energy from the user electric energy metering module to different areas in the room through respective tripping switches; the method is led out from a single pipeline which is originally provided with only a user electric energy metering module, and specifically comprises the following steps:
a node for leading out a second outlet pipeline is arranged between the outlet end of the user electric energy metering module and the inlet of the tripping switch; or,
and directly selecting the outlet ends of the two tripping switches to serve as the first outlet pipeline and the second outlet pipeline respectively, and setting other tripping switches in an open state and only setting the tripping switches corresponding to the first outlet pipeline and the second outlet pipeline in a closed state when checking errors.
Preferably, the electric energy meter is an alternating current electric energy meter or a direct current electric energy meter.
In a second aspect, the present invention further provides a method for checking errors of a user's own electric energy meter structure, where the electric energy meter 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, a user electric energy metering module is disposed on 1 inlet pipeline, and auxiliary meter modules and error reference standard devices on user electric wires are disposed on 2 outlet pipelines respectively, so as to complete calculation of metering errors of the user electric energy metering module, the auxiliary meter modules on the user electric wires and the error reference standard devices, specifically:
establishing a mathematical model by utilizing an electric energy conservation relation of an electric energy system, and calculating an electric energy measurement error of the user electric energy metering module according to electric energy data detected by the user electric energy metering module, the auxiliary meter module and the error reference standard device of the three-way array structure; and compensating the newly measured electric energy data by the calculated error, and continuously and iteratively calculating the measurement errors of the user electric energy metering module and the auxiliary meter module to obtain the user electric energy metering module without errors or equal errors.
Preferably, the compensating the original measurement data according to the reference measurement error value of the error reference standard device 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 reference error values of the electric energy metering module, the auxiliary meter module and the error reference standard device of each user 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 equivalent error data of the corresponding user electric energy metering modules, the auxiliary meter modules and the error reference standard device by utilizing the delta X deviation to obtain error-free data; or,
and directly calculating error-free data of the electric energy meter corresponding to the user self-checking errors of the three-way array structures according to the real error value of the error reference standard device.
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 meter structure and an error checking method for checking errors of a user, which are suitable for a home scene environment, and can finish error checking of the electric energy meter of the user under the condition of minimum circuit adjustment required by the user.
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 structural diagram of an electric energy meter structure for checking errors of users themselves according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of an error checking method of an electric energy meter structure forming system for checking errors by users themselves according to an embodiment of the present invention;
fig. 3 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 homogeneous equations 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. 1, an electric energy meter structure for checking errors of a user's own home, the electric energy meter 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, wherein, a user electric energy metering module is arranged on 1 inlet pipeline, an auxiliary meter module and an error reference standard device on a user electric wire are respectively arranged on 2 outlet pipelines, and the calculation of the metering errors of the user electric energy metering module, the auxiliary meter module and the error reference standard device on the user electric wire is completed, specifically:
establishing a mathematical model by utilizing an electric energy conservation relation of an electric energy system, and calculating an electric energy measurement error of the user electric energy metering module according to electric energy data detected by the user electric energy metering module, the auxiliary meter module and the error reference standard device of the three-way array structure; and compensating the newly measured electric energy data by the calculated error, and continuously and iteratively calculating the measurement errors of the user electric energy metering module and the auxiliary meter module to obtain the user electric energy metering module 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 meter with a three-way array structure, which 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 three-way array structure, each electric energy array meets the relative energy conservation law, the error of an 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 habit of using electric energy of a user is weakened, and the calculation efficiency and calculation precision are improved.
The method is suitable for home scene environment, and the error correction of the home electric energy meter is completed under the condition of minimum circuit adjustment required by a user.
The invention is different from the common method that the error reference standard device is directly connected in series on the user electric energy metering module to measure the error value of the user electric energy metering module, the traditional method has larger change on the original line, and the traditional method is impractical for users to operate the main line where the user electric energy metering module is located and set the error reference standard device on the corresponding main line.
The electric energy meter structure for checking the errors of the user's own home provided by the embodiment of the invention can enable the common user who does not know electricity to finish checking the metering errors of the electric energy meter of the user's own home. The scheme of the invention only needs to connect the auxiliary meter module in series on the power consumption line where one trip switch is located, and connect the error reference standard device in series on the power consumption line where the other trip switch is located, and at the moment, the other trip switches are all in an off state. Therefore, the whole self-home power supply system is in relative electric energy conservation relation formed by the user electric energy metering module, the auxiliary meter module and the error reference standard device.
In the actual use process, the auxiliary meter module and the error reference standard device can be manufactured into a structure similar to a change-over socket, and corresponding microprocessors and data transmission modules are arranged in corresponding change-over plugs, so that collected output can be processed and sent correspondingly.
In combination with the embodiment of the invention, a preferred implementation scheme exists, wherein the electric energy meter structure comprises a microprocessor and a data transmission module, the microprocessor is connected with each user electric energy metering module, each auxiliary meter module and each error reference standard device, the data transmission module is connected with the microprocessor and is used for calculating the error edge of the electric energy meter structure for checking errors at home and/or sending flow data acquired from each user electric energy metering module, each auxiliary meter module and each error reference standard device to a cloud server.
In combination with the embodiment of the present invention, there is a preferred implementation scheme, and compensating the original measurement data according to the reference measurement error value of the error reference standard device, 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 reference error values of the electric energy metering module, the auxiliary meter module and the error reference standard device of each user 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 equivalent error data of the corresponding user electric energy metering modules, the auxiliary meter modules and the error reference standard device by utilizing the delta X deviation to obtain error-free data; or,
and directly calculating error-free data of the electric energy meter corresponding to the user self-checking errors of the three-way array structures according to the real error value of the error reference standard device.
There is a preferred implementation manner in connection with the embodiment of the present invention, where the error refers to a reference error value of a standard device, and includes:
in the flow measurement system, after any one of the user electric energy metering module, the auxiliary meter module and the error reference standard device is selected as an error reference standard device, a preset reference error value is matched for the 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 the true error value of the error reference standard device is equal to DeltaX deviation.
In combination with the embodiment of the invention, a preferred implementation scheme exists, after completing the layout of the three-way array in the flow system and completing the calculation of the flow measurement errors of the user electric energy metering modules, the auxiliary meter modules and the error reference standard devices respectively arranged on the 1-inlet and 2-outlet lines, the continuous iterative calculation of the errors of the flow metering devices in the flow system on the corresponding pipeline is completed by using the metering data with the corrected errors in the three-way array.
In the specific implementation process of the embodiment of the invention, the electric energy and access side where the corresponding user electric energy metering module is located are not excluded from being provided with detection interface terminals in advance after the invention is substantially popularized in the future, the corresponding detection interface terminals are used for completing the arrangement of the auxiliary meter module directly on the electric energy main line where the user enters the home (namely, the line where the user electric energy metering module is located), the auxiliary meter module is positioned at the power supply downstream of the user electric energy metering module, and the lead-out wire position of the standard device with corresponding known error is positioned between the user electric energy metering module and the auxiliary meter module, so that a better compact 1-in 2-out three-way array structure is formed. Specific: the pipeline of the second outlet where the error reference standard device is located is led out from a single pipeline which is originally only provided with a user electric energy metering module; after passing through the node position of the corresponding leading-out second outlet pipeline, the original single pipeline forms a first outlet pipeline corresponding to the second outlet pipeline, and a secondary table module is additionally arranged on the corresponding first outlet pipeline;
and setting an error reference standard device on the second outlet pipeline, and selecting an electric appliance with a working state meeting a preset condition as energy consumption equipment on the second outlet pipeline.
The preset condition is that the energy consumption of the equipment on the first outlet pipeline is controlled within 10 times of the energy consumption of the equipment on the second outlet pipeline. The requirement here is to limit the mutual difference between the metering magnitude of the line where the secondary meter module is located and the metering magnitude of the line where the standard device with known error is located. For example, if the measurement magnitude of the line where the standard device with known error is located is far smaller than the measurement magnitude of the line where the secondary meter module is located, the calculation accuracy is lost correspondingly when the calculation of the relative energy conservation mathematical model is performed.
Summarizing at least two given auxiliary meter setting modules and knowing that if a user is provided with a branching device at home, the corresponding branching device is used for respectively conveying the electric energy from the user electric energy metering module to different areas in a room through respective tripping switches; the method is led out from a single pipeline which is originally provided with only a user electric energy metering module, and specifically comprises the following steps:
a node for leading out a second outlet pipeline is arranged between the outlet end of the user electric energy metering module and the inlet of the tripping switch; or,
and directly selecting the outlet ends of the two tripping switches to serve as the first outlet pipeline and the second outlet pipeline respectively, and setting other tripping switches in an open state and only setting the tripping switches corresponding to the first outlet pipeline and the second outlet pipeline in a closed state when checking errors.
Example 2:
the invention provides a method for checking errors of a user's own electric energy meter structure, which is suitable for realizing the corresponding method process of the electric energy meter structure provided by the embodiment 1, wherein the electric energy meter structure comprises a 1-in and 2-out electric energy splitting structure, the electric energy splitting structure forms an electric energy system conforming to the electric energy conservation relation, 1 inlet pipeline is provided with a user electric energy metering module, 2 outlet pipelines are respectively provided with an auxiliary meter module and an error reference standard device on a user electric wire, and the calculation of the metering errors of the user electric energy metering module, the auxiliary meter module and the error reference standard device on the user electric wire is completed, as shown in fig. 2, the method comprises the following steps:
in step 201, a mathematical model is established by using the electric energy conservation relation of the electric energy system, and the electric energy measurement error of the user electric energy metering module is calculated according to the electric energy data detected by the user electric energy metering module, the auxiliary meter module and the error reference standard device of the three-way array structure;
in step 202, the measured errors of the user power metering module and the auxiliary meter module are continuously and iteratively calculated by compensating the newly measured power data by the calculated errors, so as to obtain the user power metering module without errors or with equal errors.
The embodiment of the invention provides an electric energy meter with a three-way array structure, which 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 three-way array structure, each electric energy array meets the relative energy conservation law, the error of an 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 habit of using electric energy of a user is weakened, and the calculation efficiency and calculation precision are improved.
In combination with the embodiment of the present invention, there is an optional implementation scheme, and compensating the original measurement data according to the reference measurement error value of the error reference standard device, 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 reference error values of the electric energy metering module, the auxiliary meter module and the error reference standard device of each user 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 equivalent error data of the corresponding user electric energy metering modules, the auxiliary meter modules and the error reference standard device by utilizing the delta X deviation to obtain error-free data; or,
and directly calculating error-free data of the electric energy meter corresponding to the user self-checking errors of the three-way array structures according to the real error value of the error reference standard device.
The error calculation and compensation of the electric energy sensor (comprising the user electric energy metering module, the auxiliary meter module and the error reference standard device) 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 w in the foregoing formula 0 ，x 0 And w i ，x i Representing the total surface of 1 electric energy sensor and the original measurement data and error corresponding to the ith electric energy sensor. Wherein w is 0 、w 1 And w 2 The system can be used for the electric energy metering data corresponding to the user electric energy metering module (such as the user household ammeter) in fig. 1, the electric energy metering data of the auxiliary meter module 1 and the electric energy metering data of the auxiliary meter module 2 respectively.
In the foregoing formula, x 0 And x i Any one of the data is a known quantity, and the error value of other electric energy sensors can be obtained through calculation by reading the data for at least 2 times.
And compensating the readings of the total table unit of the electric energy sensor and the sub table of the electric energy sensor by using the calculated error value, so that electric energy data without errors or equal errors can be obtained:
w′ 0 ＝w 0 (1+x 0 )
w′ i ＝w i (1+x i )
wherein w' 0 And w' i The data respectively represent the electric energy data of the compensated electric energy sensor total surface unit and the electric energy sensor sub-meter, and the compensated data also satisfy the relative energy conservation relation:
in the foregoing calculation process, an error reference standard needs to be set, and error-free data or error-free data can be obtained by using the error reference standard, so as to perform error correction on the electric energy measurement system.
Example 3:
fig. 3 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. 3, 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. 3 as a bus connection.
The memory 42, as a storage medium for storing a nonvolatile computer-readable storage medium, can be used to store nonvolatile software programs and nonvolatile computer-executable programs, such as the checking error method in embodiment 2. 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 (9)
1. The utility model provides a user's self check-up error's electric energy meter structure, its characterized in that, electric energy meter structure includes 1 business turn over 2 electric energy split stream structure, and electric energy split stream structure constitutes an electric energy system who accords with electric energy conservation relation, wherein is provided with user's electric energy metering module on 1 import pipeline, is provided with 2 auxiliary meter modules on 2 export pipelines respectively, and user's electric energy metering module or auxiliary meter module on arbitrary pipeline of wherein regard as error reference standard device or concatenate with error reference device, accomplish the calculation of user's electric energy metering module, 2 auxiliary meter modules and error reference standard device metering error on the user's electric wire, and is specific:
establishing a mathematical model by utilizing an electric energy conservation relation of an electric energy system, and calculating an electric energy measurement error of a user electric energy metering module according to electric energy data detected by the user electric energy metering module, the auxiliary meter module and the error reference standard device of the three-way array structure; compensating the newly measured electric energy data through the calculated error, and continuously and iteratively calculating the measurement errors of the user electric energy metering module and the auxiliary meter module to obtain the user electric energy metering module without errors or equal errors;
the method for obtaining the constant-error data or the error-free data comprises the following steps of:
compensating corresponding original measurement data by using the reference measurement error value to obtain equal error data of reference error values of the electric energy metering module, the auxiliary meter module and the error reference standard device of each user 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 equivalent error data of the corresponding user electric energy metering modules, the auxiliary meter modules and the error reference standard device by utilizing the delta X deviation to obtain error-free data; or directly calculating to obtain error-free data of the user electric energy metering module, the auxiliary meter module and the error reference standard device in the corresponding three-way array structures according to the actual error value of the error reference standard device.
2. The user-by-home error checking electric energy meter structure of claim 1, comprising a microprocessor and a data transmission module, wherein the microprocessor is connected to each of the user electric energy metering module, the sub-meter module and the error reference standard device, and the data transmission module is connected to the microprocessor for error edge calculation of the user-by-home error checking electric energy meter structure and/or for transmitting flow data collected from each of the user electric energy metering module, the sub-meter module and the error reference standard device to the cloud server.
3. The structure of a power meter for checking errors by a user's own home as set forth in claim 1, wherein the error reference standard means comprises:
in the flow measurement system, after any one of the user electric energy metering module, the auxiliary meter module and the error reference standard device is selected as an error reference standard device, a preset reference error value is matched for the measurement error of the error reference standard device, wherein the difference value between the preset reference error value and the real error value of the error reference standard device is equal to DeltaX deviation.
4. The structure of claim 1, wherein after completing the layout of the three-way array in the flow system and completing the calculation of the measurement errors of the user power metering module, the sub-meter module and the error reference standard device on the 1-inlet and 2-outlet lines, the calculation of the errors of the flow metering devices in the flow system on the corresponding pipeline is completed continuously and iteratively by using the measurement data after the correction of the errors in the three-way array.
5. The structure of any one of claims 1-4, wherein the second outlet pipeline where the error reference standard device is located is led out from a single pipeline where only the user power metering module is originally provided; after passing through the node position of the corresponding leading-out second outlet pipeline, the original single pipeline forms a first outlet pipeline corresponding to the second outlet pipeline, and a first auxiliary table module is additionally arranged on the corresponding first outlet pipeline;
and a second auxiliary meter module is arranged on the second outlet pipeline, an error reference standard device is additionally arranged on the first auxiliary meter module or the second auxiliary meter module pipeline, and an electric appliance with the working state meeting the preset condition is selected as energy consumption equipment on the second outlet pipeline.
6. The user-friendly error checking electric energy meter structure according to claim 5, wherein the first outlet line and the second outlet line are preloaded with respective live wire terminals, respectively.
7. The structure of claim 5, wherein if the user is provided with a branching device, the branching device is used for respectively transmitting the electric energy from the user electric energy metering module to different areas in the room through the tripping switch; the method is led out from a single pipeline which is originally provided with only a user electric energy metering module, and specifically comprises the following steps:
a node for leading out a second outlet pipeline is arranged between the outlet end of the user electric energy metering module and the inlet of the tripping switch; or,
and directly selecting the outlet ends of the two tripping switches to serve as the first outlet pipeline and the second outlet pipeline respectively, and setting other tripping switches in an open state and only setting the tripping switches corresponding to the first outlet pipeline and the second outlet pipeline in a closed state when checking errors.
8. The structure of claim 1, wherein the meter is an ac meter or a dc meter.
9. The utility model provides a calibration error method of electric energy meter structure of user's own home which characterized in that, electric energy meter structure includes 1 business turn over 2 electric energy split stream structure, and electric energy split stream structure constitutes an electric energy system who accords with electric energy conservation relation, wherein is provided with user's electric energy metering module on 1 import pipeline, and the pipeline of 2 exports is provided with auxiliary meter module and error reference standard device on the user's electric wire respectively, accomplishes the calculation of user's electric energy metering module, auxiliary meter module and error reference standard device metering error on the user's electric wire, and is specific:
establishing a mathematical model by utilizing an electric energy conservation relation of an electric energy system, and calculating an electric energy measurement error of a user electric energy metering module according to electric energy data detected by the user electric energy metering module, the auxiliary meter module and the error reference standard device of the three-way array structure; compensating the newly measured electric energy data through the calculated error, and continuously and iteratively calculating the measurement errors of the user electric energy metering module and the auxiliary meter module to obtain the user electric energy metering module without errors or equal errors;
the method for obtaining the constant-error data or the error-free data comprises the following steps of:
compensating corresponding original measurement data by using the reference measurement error value to obtain equal error data of reference error values of the electric energy metering module, the auxiliary meter module and the error reference standard device of each user 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 equivalent error data of the corresponding user electric energy metering modules, the auxiliary meter modules and the error reference standard device by utilizing the delta X deviation to obtain error-free data; or directly calculating to obtain error-free data of the electric energy meter corresponding to the user self-checking errors of the three-way array structures according to the real error value of the error reference standard device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010935152.6A CN114152787B (en) | 2020-09-08 | 2020-09-08 | Electric energy meter structure for checking errors by users at home and error checking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010935152.6A CN114152787B (en) | 2020-09-08 | 2020-09-08 | Electric energy meter structure for checking errors by users at home and error checking method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114152787A CN114152787A (en) | 2022-03-08 |
| CN114152787B true CN114152787B (en) | 2024-04-02 |
Family
ID=80460686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010935152.6A Active CN114152787B (en) | 2020-09-08 | 2020-09-08 | Electric energy meter structure for checking errors by users at home and error checking method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114152787B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114152805B (en) * | 2020-09-08 | 2024-04-26 | 武汉国测数据技术有限公司 | Electric energy meter structure for checking errors by users at home and error checking method |
| CN116754830B (en) * | 2023-06-13 | 2024-01-09 | 武汉阿迪克电子股份有限公司 | Metering method and device of electric energy meter and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101925826A (en) * | 2008-02-06 | 2010-12-22 | 三菱电机株式会社 | Power measuring system, measuring apparatus, load terminal, and device control system |
| CN106338706A (en) * | 2015-07-10 | 2017-01-18 | 侯飞 | Electric energy metering device overall error detecting method, device and system |
| CN106468769A (en) * | 2016-09-06 | 2017-03-01 | 武汉尤瑞卡节能科技有限公司 | A kind of error can the charging pile of self checking and its method of calibration |
| CN107818395A (en) * | 2017-09-05 | 2018-03-20 | 天津市电力科技发展有限公司 | A kind of electric energy meter error iterative calculation method based on uncertainty of measurement |
| CN109342989A (en) * | 2018-08-16 | 2019-02-15 | 全球能源互联网研究院有限公司 | A kind of error analysis method and device of electric energy meter |
-
2020
- 2020-09-08 CN CN202010935152.6A patent/CN114152787B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101925826A (en) * | 2008-02-06 | 2010-12-22 | 三菱电机株式会社 | Power measuring system, measuring apparatus, load terminal, and device control system |
| CN106338706A (en) * | 2015-07-10 | 2017-01-18 | 侯飞 | Electric energy metering device overall error detecting method, device and system |
| CN106468769A (en) * | 2016-09-06 | 2017-03-01 | 武汉尤瑞卡节能科技有限公司 | A kind of error can the charging pile of self checking and its method of calibration |
| CN107818395A (en) * | 2017-09-05 | 2018-03-20 | 天津市电力科技发展有限公司 | A kind of electric energy meter error iterative calculation method based on uncertainty of measurement |
| CN109342989A (en) * | 2018-08-16 | 2019-02-15 | 全球能源互联网研究院有限公司 | A kind of error analysis method and device of electric energy meter |
Non-Patent Citations (1)
| Title |
|---|
| 基于高压电能表的计量装置在线校验技术;郭琳云;尹项根;张乐平;胡顺;;电力自动化设备(第12期);第83-86页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114152787A (en) | 2022-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114152787B (en) | Electric energy meter structure for checking errors by users at home and error checking method | |
| CN106569164A (en) | Method and system for synchronization testing of electric quantity of double-core electric energy meter | |
| CN112946560B (en) | Electric energy meter calibration method and device, electric energy meter and electric energy meter system | |
| WO2010083164A2 (en) | Distribution system analysis using meter data | |
| CN111998918B (en) | Error correction method, error correction device and flow sensing system | |
| CN114152791B (en) | Three-meter-method three-phase electric energy meter structure with user self-checking error and checking method | |
| CN114152812B (en) | Error self-checking three-phase electric energy meter and measuring system and method thereof | |
| CN112556798B (en) | Flow measurement system and error verification method convenient for error verification | |
| CN112557999B (en) | Multiuser electric energy meter convenient for checking errors and error checking method | |
| CN112557997B (en) | Mesh-shaped electric energy sensor system convenient for error verification and error verification method | |
| CN114152811B (en) | Electric energy meter with three-way array structure and measuring system and measuring method formed by electric energy meter | |
| CN114152805B (en) | Electric energy meter structure for checking errors by users at home and error checking method | |
| CN114152789B (en) | Three-meter-method three-phase electric energy meter structure with user self-checking error and checking method | |
| CN112557995B (en) | Ammeter box convenient for checking errors and error checking method | |
| CN114152806A (en) | Electric energy sensor with three-way array structure and measurement system and method formed by electric energy sensor | |
| CN102136105A (en) | Phase measurement unit-based power grid information graph parameter estimation method | |
| CN114152807A (en) | Error self-checking three-phase electric energy meter and measuring system and method thereof | |
| CN114152810B (en) | Three-phase electric energy sensor with three-way array structure and measuring system and method thereof | |
| CN114152804B (en) | Electric energy meter with three-way array structure and measuring system and method thereof | |
| CN114152788B (en) | Two-meter-method three-phase electric energy meter structure with user self-checking error and testing method | |
| CN112557996B (en) | Electric energy measurement system convenient for error verification and error verification method | |
| CN112557998B (en) | Ammeter box convenient for checking errors and error checking method | |
| CN114152813A (en) | Error self-checking three-phase electric energy meter and measuring system and method thereof | |
| CN113030611A (en) | Line loss information planning system based on actual measurement information | |
| CN115201742B (en) | Method and device for determining error of metering point of low-voltage transformer area and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |