CN114152790A - Ammeter box with error self-checking function and checking method thereof - Google Patents
Ammeter box with error self-checking function and checking method thereof Download PDFInfo
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- 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
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- 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
- G01R11/04—Housings; Supporting racks; Arrangements of terminals
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- 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
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The invention discloses an electric meter box with an error self-checking function and a checking method thereof. An incoming line of the electric meter box is split into n primary outgoing line ports, the primary outgoing line ports are used for respectively splitting two secondary outgoing line ports, transmission lines led out from the secondary outgoing line ports are used for supplying power to each household, incoming line sensors are arranged on the transmission lines from each primary outgoing line port to the corresponding secondary outgoing line port, and outgoing line sensors corresponding to each household are arranged on the transmission lines of the secondary outgoing line ports; selecting one transmission line from adjacent secondary line outlet ports in every two adjacent primary line outlet ports to form two parallel transmission lines; arranging collinear sensors for the two parallel transmission lines; in the invention, the calculated metering error value of the metering sensor is transferred to other relative energy conservation relations in a cascading mode, so that the calculation efficiency and the calculation precision are improved.
Description
Technical Field
The invention belongs to the technical field of intelligent meter measurement, and particularly relates to an electric meter box with an error self-checking function and a checking method thereof.
Background
At present, flow sensors such as electric meters, water meters, gas meters or other flow meters are used in large quantities, and the flow sensors cannot be detached to detect metering errors in laboratories due to too large use amount in real life. There is a need to find techniques and methods for online detection of errors in these flow sensors;
for a mathematical algorithm, when a calibration method of an electric meter box with an error self-calibration function is large, a plurality of flow sensors are included in the calibration method of the electric meter box with the error self-calibration function, the multiple collinearity problem of flow meter measurement data can be derived due to the similarity of user flow consumption habits, and the calculation accuracy of the data calculation method is influenced.
Conventionally, a flow sensor is installed on a pipeline or a node of a calibration method of a meter box with an error self-calibration function to be measured, the flow of each point is measured, and the measurement error of each flow sensor is separately calibrated when necessary. The problem that this kind of method brings is that the work load of flow sensor error check-up is huge, and the cost is too high.
In view of the above, overcoming the drawbacks of the prior art is an urgent problem in the art.
Disclosure of Invention
Aiming at the defects or the improvement requirements of the prior art, the cost for completing the metering error of the metering sensor in the electric meter box is reduced, and the efficiency for calculating the metering error of the metering sensor in the electric meter box is improved.
In a first aspect, the present invention provides an electricity meter box with an error self-checking function, including:
an incoming line of the electric meter box is split into n primary outgoing line ports, the primary outgoing line ports are used for respectively splitting two secondary outgoing line ports, transmission lines led out from the secondary outgoing line ports are used for supplying power to each household, incoming line sensors are arranged on the transmission lines from each primary outgoing line port to the corresponding secondary outgoing line port, and outgoing line sensors corresponding to each household are arranged on the transmission lines of the secondary outgoing line ports;
selecting one transmission line from adjacent secondary line outlet ports in every two adjacent primary line outlet ports to form two parallel transmission lines; arranging collinear sensors for the two parallel transmission lines;
each collinear sensor and the outgoing line sensors on the two parallel transmission lines which are responsible for detection form a relative energy conservation relation; each incoming line sensor and two outgoing line sensors under two outgoing line ports of the incoming line sensor form a relative energy conservation relation.
Preferably, the outgoing line sensor and the collinear sensor are respectively provided with a wireless transmission module, and the wireless transmission modules are used for transmitting the electric energy data detected by the outgoing line sensor and the collinear sensor to the concentrator or the server.
Preferably, still be provided with treater and wireless transceiver module in the ammeter case, it is specific:
the outgoing line sensor and the collinear sensor in the electric meter box are respectively connected with the processor and used for transmitting the electric energy data detected by the outgoing line sensor and the collinear sensor to the processor;
the wireless transceiver module is connected with the processor and used for transmitting the electric energy data acquired by the processor to the concentrator or the server.
Preferably, the number of the secondary line outlet ports arranged on the first-stage line outlet ports at the head and the tail is one, and no line inlet sensor is arranged on the first-stage line outlet ports at the head and the tail.
In a second aspect, the present invention provides a method for calibrating an electric meter box with an error self-calibration function, where the electric meter box of the first aspect is used, specifically:
a metering standard device is connected in series with a transmission line of a first secondary outgoing line port in an electric meter box;
after the electric energy data reported by the metering standard device is obtained, a first common line sensor and a second line sensor which form a relative energy conservation relation with a first line sensor on the first secondary line outlet port are confirmed; the second outgoing line sensor is positioned on a second-level outgoing line port, and a transmission line of the first second-level outgoing line port and a transmission line of the second-level outgoing line port belong to an electric energy detection object of the first common line sensor together;
and substituting the electric energy data detected by the metering standard device as a known quantity into a relative energy conservation equation formed by the detected electric energy data of the first outlet sensor, the detected electric energy data of the second outlet sensor and the detected electric energy data of the first common line sensor, and solving to obtain the detected electric energy data of the first outlet sensor, the detected electric energy data of the second outlet sensor and the respective metering errors of the first common line sensor.
Preferably, after calculating the metering error of the first outlet sensor and the metering error of the second outlet sensor, the method further comprises:
analyzing whether other outlet sensors and collinear sensors exist at two adjacent sides of the first outlet sensor and the second outlet sensor in the electric meter box or not, and forming a relative energy conservation relation with the first outlet sensor and/or the second outlet sensor respectively;
if the linear sensor exists, a second phase pair energy conservation equation and/or a third phase pair energy conservation equation are/is further constructed with the first outgoing line sensor and/or the second outgoing line sensor, and the metering error of the outgoing line sensor and the collinear sensor related in the second phase pair energy conservation equation and/or the third phase pair energy conservation equation is solved by taking the metering error solved in the first outgoing line sensor and/or the second outgoing line sensor as the known quantity.
In a third aspect, the present invention provides a method for calibrating an electric meter box with an error self-calibration function, where the electric meter box of the first aspect is used, specifically:
two power transmission lines which are responsible for detection by a first common line sensor in an electric meter box are connected in series with a metering standard device which can also detect the corresponding two power transmission lines;
after the electric energy data reported by the metering standard device are obtained, confirming a first outgoing line sensor and a second outgoing line sensor which form a relative energy conservation relation with the first common line sensor; the second outgoing line sensor is positioned on a second-level outgoing line port, and a transmission line of the first second-level outgoing line port and a transmission line of the second-level outgoing line port belong to an electric energy detection object of the first common line sensor together;
and substituting the electric energy data detected by the metering standard device as a known quantity into a relative energy conservation equation formed by the detected electric energy data of the first outlet sensor, the detected electric energy data of the second outlet sensor and the detected electric energy data of the first common line sensor, and solving to obtain the detected electric energy data of the first outlet sensor, the detected electric energy data of the second outlet sensor and the respective metering errors of the first common line sensor.
Preferably, after calculating the metering error of the first outlet sensor and the metering error of the second outlet sensor, the method further comprises:
analyzing whether other outlet sensors and collinear sensors exist at two adjacent sides of the first outlet sensor and the second outlet sensor in the electric meter box or not, and forming a relative energy conservation relation with the first outlet sensor and/or the second outlet sensor respectively;
if the linear sensor exists, a second phase pair energy conservation equation and/or a third phase pair energy conservation equation are/is further constructed with the first outgoing line sensor and/or the second outgoing line sensor, and the metering error of the outgoing line sensor and the collinear sensor related in the second phase pair energy conservation equation and/or the third phase pair energy conservation equation is solved by taking the metering error solved in the first outgoing line sensor and/or the second outgoing line sensor as the known quantity.
In a fourth aspect, the present invention further provides a method for calibrating an electric meter box with an error self-calibration function, where the electric meter box of the first aspect is used, specifically:
a metering standard device is connected in series with a transmission line which is responsible for detection by a first incoming line metering sensor in an electric meter box;
after the electric energy data reported by the metering standard device is obtained, a first outgoing line sensor and a second outgoing line sensor which form a relative energy conservation relation with the first incoming line metering sensor are confirmed; the second outlet sensor is positioned on a second-level outlet port, and a transmission line of the first second-level outlet port and a transmission line of the second-level outlet port belong to an electric energy detection object of the first inlet metering sensor together;
and substituting the electric energy data detected by the metering standard device as a known quantity into a relative energy conservation equation formed by the detected electric energy data of the first outlet sensor, the detected electric energy data of the second outlet sensor and the detected electric energy data of the first inlet metering sensor, and solving to obtain the detected electric energy data of the first outlet sensor, the detected electric energy data of the second outlet sensor and the respective metering errors of the first inlet metering sensor.
Preferably, after calculating the metering error of the first outlet sensor and the metering error of the second outlet sensor, the method further comprises:
analyzing whether other outlet sensors and collinear sensors exist at two adjacent sides of the first outlet sensor and the second outlet sensor in the electric meter box or not, and forming a relative energy conservation relation with the first outlet sensor and/or the second outlet sensor respectively;
if the linear sensor exists, a second phase pair energy conservation equation and/or a third phase pair energy conservation equation are/is further constructed with the first outgoing line sensor and/or the second outgoing line sensor, and the metering error of the outgoing line sensor and the collinear sensor related in the second phase pair energy conservation equation and/or the third phase pair energy conservation equation is solved by taking the metering error solved in the first outgoing line sensor and/or the second outgoing line sensor as the known quantity.
Generally, compared with the prior art, the technical scheme of the invention has the following beneficial effects: the invention provides an electric meter box with an error self-checking function and a checking method thereof, wherein the error of a flow sensor in each flow array is respectively calculated, the establishment and calculation of a relative energy conservation formula of a minimum unit are ensured in a parallel cascade mode, and the calculated metering error value of a metering sensor is transmitted to other relative energy conservation relations in a cascade mode, so that 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 an electric meter box with an error self-checking function according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an electric meter box with an error self-checking function according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electric meter box with an error self-checking function according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a calibration method of an electric meter box with an error self-calibration function according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a calibration method of an electricity meter box with an error self-calibration function according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a calibration method of an electricity meter box with an error self-calibration function according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a calibration method of an electricity meter box with an error self-calibration function according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a calibration method of an electricity meter box with an error self-calibration function according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a verification method for an electricity meter box with an error self-verification function 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 metering standard device is used as an error reference standard, and flow data reported by the metering standard device is used as one of known quantities for breaking an equation which is established according to a relative energy conservation relation and carries metering error parameters of each metering sensor in a calculation process.
Whether using physical experimentation or mathematical calculation, the measurement of any one quantity is relative to a reference; any measurement error is detected relative to an error reference, and the standard or data used for the error reference is referred to as a metrology standard. For example, a "standard meter" in an experiment of error checking of a conventional electric energy meter is a metering 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 metering standard device calculated at this time.
In the drawings of the embodiments of the present invention, the incoming line metering sensor, the outgoing line sensor and the collinear sensor are abbreviated as an incoming line sensor, an outgoing line sensor and a collinear sensor.
Example 1:
the embodiment of the invention provides an electric meter box with an error self-checking function, as shown in fig. 1, comprising:
an inlet wire split of ammeter case goes out a n one-level outlet port, the one-level outlet port is used for separately dividing two second grade outlet port, the transmission line that the second grade outlet port was derived is used for supplying power for each resident to be provided with inlet wire sensor on every one-level outlet port to the transmission line of corresponding second grade outlet port, be provided with the outlet wire sensor who corresponds to each resident on the transmission line of second grade outlet port.
Selecting one transmission line from adjacent secondary line outlet ports in every two adjacent primary line outlet ports to form two parallel transmission lines; arranging collinear sensors for the two parallel transmission lines; as shown in fig. 1, when a transmission line in the adjacent secondary outlet port is specifically selected, the array shown in fig. 1 is performed, because the actual physical wiring performance is not necessarily consistent as shown in fig. 1, but the logical relationship can be represented as shown in fig. 1.
Each collinear sensor and outlet sensors on two parallel transmission lines under the detection of the collinear sensor form a relative energy conservation relation; each incoming line sensor and two outgoing line sensors under two outgoing line ports of the incoming line sensor form a relative energy conservation relation. Taking fig. 1 as an example, wherein the outgoing line sensor 2-the outgoing line sensor 3-the collinear sensor 1 form a relative energy conservation relation, the outgoing line sensor 3-the outgoing line sensor 4-the collinear sensor 1 form a relative energy conservation relation, and the like, the outgoing line sensor 2 n-2-the outgoing line sensor 2 n-1-the collinear sensor n form a relative energy conservation relation. On the other hand, the incoming line sensor 1, the outgoing line sensor 1 and the outgoing line sensor 2 form a relative energy conservation relation, the incoming line sensor 2, the outgoing line sensor 3 and the outgoing line sensor 4 form a relative energy conservation relation, and by analogy, the incoming line sensor n, the outgoing line sensor 2n-1 and the outgoing line sensor 2n form a relative energy conservation relation.
The embodiment of the invention provides an electric meter box with an error self-checking function and a checking method thereof, wherein the error of a flow sensor in each flow array is calculated respectively, the establishment and calculation of a relative energy conservation formula of a minimum unit are ensured in a parallel cascade mode, and the calculated metering error value of a metering sensor is transmitted to other relative energy conservation relations in a cascade mode, so that the calculation efficiency and the calculation precision are improved.
In the embodiment of the present invention, there is an optional implementation manner, where the outgoing line sensor and the collinear sensor are respectively provided with a wireless transmission module, and the wireless transmission module is configured to transmit the electric energy data detected by the outgoing line sensor and the collinear sensor to the concentrator or the server. The method has the advantages that great flexibility can be realized for the layout of the metering sensors in the electric meter box, namely, the temporary addition or deletion of the metering sensors in the designed electric meter box can not cause great influence on the whole electric energy data acquisition, only the corresponding relation between the addition/deletion metering sensors and the user identity identification needs to be registered at the server side, and in an optional mode, the corresponding relation of corresponding electric meter box identifications can be newly added, so that convenience is provided for management.
In the embodiment of the present invention, there is another optional implementation manner, as shown in fig. 2, the electric meter box is further provided with a processor and a wireless transceiver module, it should be noted that in fig. 2, each metering sensor and the processor are respectively provided with a data channel, and for simplicity of presentation, connection lines of the data channels in fig. 2 are not labeled one by one, specifically:
the outgoing line sensor and the collinear sensor in the electric meter box are respectively connected with the processor and used for transmitting the electric energy data detected by the outgoing line sensor and the collinear sensor to the processor; the wireless transceiver module is connected with the processor and used for transmitting the electric energy data acquired by the processor to the concentrator or the server. The method has the advantages that the number of data channels required to be established on the server side is reduced, and the data processing pressure of the server is reduced.
In combination with the embodiment of the present invention, further considering that the benefit of the arrangement of the line sensors is relatively low at the head and tail positions of the electric meter box, in order to further compress the processing cost of the electric meter box and improve the utilization rate of each metering sensor, an improvement is also provided based on embodiment 1 of the present invention, as shown in fig. 3, the number of the secondary line outlets provided at the head and tail primary line outlets is one, and no line sensor is provided at the head and tail primary line outlets.
Example 2:
the invention provides a method for checking an electric meter box with an error self-checking function, which uses the electric meter box described in embodiment 1 and specifically comprises the following steps as shown in fig. 4:
in step 201, a measurement standard is connected in series to a power line of a first secondary outlet port in an electric meter box. Taking fig. 1 as an example, the transmission line of the first secondary output port connected in series with the brick measuring marker is the transmission lead where the output sensor 2 in fig. 1 is located.
In step 202, after the electric energy data reported by the metering standard is acquired, it is determined that the first common line sensor and the second line sensor, which form a relative energy conservation relation with the first line sensor on the first secondary line outlet port, are formed.
The second outgoing line sensor is positioned on a second-level outgoing line port, and a transmission line of the first second-level outgoing line port and a transmission line of the second-level outgoing line port belong to an electric energy detection object of the first common line sensor together;
in step 203, the electric energy data detected by the measurement standard is substituted into the relative energy conservation equation formed by the detected electric energy data of the first outgoing line sensor, the detected electric energy data of the second outgoing line sensor and the detected electric energy data of the first common line sensor, and the respective measurement errors of the first outgoing line sensor, the detected electric energy data of the second outgoing line sensor and the first common line sensor are obtained by solving.
The embodiment of the invention provides an electric meter box with an error self-checking function and a checking method thereof, wherein the error of a flow sensor in each flow array is calculated respectively, the establishment and calculation of a relative energy conservation formula of a minimum unit are ensured in a parallel cascade mode, and the calculated metering error value of a metering sensor is transmitted to other relative energy conservation relations in a cascade mode, so that the calculation efficiency and the calculation precision are improved.
In an embodiment of the present invention, in order to further embody the characteristics of the cascaded relative energy conservation relation, in combination with the embodiment of the present invention, after the metering error of the first outgoing line sensor and the metering error of the second outgoing line sensor are obtained through calculation, as shown in fig. 5, the method further includes:
in step 204, analyzing whether other outgoing line sensors and collinear sensors exist at two adjacent sides of the first outgoing line sensor and the second outgoing line sensor in the electric meter box, and forming a relative energy conservation relation with the first outgoing line sensor and/or the second outgoing line sensor respectively;
if the linear sensor exists, a second phase pair energy conservation equation and/or a third phase pair energy conservation equation are/is further constructed with the first outgoing line sensor and/or the second outgoing line sensor, and the metering error of the outgoing line sensor and the collinear sensor related in the second phase pair energy conservation equation and/or the third phase pair energy conservation equation is solved by taking the metering error solved in the first outgoing line sensor and/or the second outgoing line sensor as the known quantity.
In order to further explain the implementation details of the embodiment of the present invention, the expression is performed by using a formula, and then a first-stage relative metering conservation relation formed by the three components is calculated to obtain a metering error value of the three components, which specifically includes:
for the n incoming line metering sensor, 2n-1 outgoing line sensor and 2n outgoing line sensor as shown in fig. 1, the flow rate conforms to the relative energy conservation relation, that is, the following formula is satisfied:
wincoming line n(1+xIncoming line n)＝wOutgoing line 2n-1(1+xOutgoing line 2n-1)+wOutgoing line 2n(1+xOutgoing line 2n)
Wherein, wIncoming line n，xIncoming line n、wOutgoing line 2n-1，xOutgoing line 2n-1And wOutgoing line 2n，xOutgoing line 2nRespectively representing original detection data and a metering error variable corresponding to the nth incoming line metering sensor, the 2n-1 th outgoing line sensor and the 2 nth outgoing line sensor;
as shown in fig. 1, a measurement standard is connected in series to a transmission line on which a 2 nd outgoing line sensor is located, and the measurement standard is directly solved, specifically including:
the transmission lead of the 2 nd outgoing line sensor is connected with a metering standard device in series, and the following formula is satisfied:
wstandard of merit＝wOutgoing line 2(1+xOutgoing line 2)
Wherein, wStandard of meritAnd wOutgoing line 2Representing raw test data, x, of the metrological standard and 2 nd outlet line sensor, respectivelyOutgoing line 2Representing the metering error variable of the 2 nd outlet line sensor. In the specific calculation process, pass wCollinear 1(1+y1)＝wOutgoing line 2(1+xOutgoing line 2)+wOutgoing line 3(1+xOutgoing line 3) Wherein w isCollinear 1Is raw detection data of the 1 st collinear sensor, y1Is the metrology error of the 1 st inline sensor. The metering error x of the 3 rd outgoing line sensor 3 is obtained after solving3Then, the calculation of the outgoing line sensor 4 is further performed through a cascaded next-stage relative metering conservation relation, wherein the next-stage relative metering conservation relation is as follows:
wincoming line2(1+xInlet wire 2)＝wOutgoing line 3(1+xOutgoing line 3)+wOutgoing line 4(1+xOutgoing line 4)
According to the above progressive relationship, the known quantity is finally transferred to the 2 n-th outgoing line sensor.
Example 3:
the invention provides a method for checking an electric meter box with an error self-checking function, which uses the electric meter box described in embodiment 1, and is different from embodiment 2 in that the position of a metering standard device is positioned at the position of the characteristic of a collinear sensor, and the position of the metering standard device is positioned at the position of the characteristic of an outgoing line sensor in embodiment 1, as shown in fig. 6, the method comprises the following steps:
in step 301, a measurement standard device capable of detecting two corresponding transmission lines is connected in series to the two transmission lines in the electric meter box, wherein the two transmission lines are detected by the first common line sensor.
In step 302, after the electric energy data reported by the metering standard is obtained, a first outgoing line sensor and a second outgoing line sensor which form a relative energy conservation relation with the first common line sensor are determined.
The second outgoing line sensor is located on a second-level outgoing line port, and a transmission line of the first second-level outgoing line port and a transmission line of the second-level outgoing line port belong to an electric energy detection object of the first common line sensor together.
In step 303, the electric energy data detected by the measurement standard is substituted into the relative energy conservation equation formed by the detected electric energy data of the first outgoing line sensor, the detected electric energy data of the second outgoing line sensor and the detected electric energy data of the first common line sensor, and the respective measurement errors of the first outgoing line sensor, the detected electric energy data of the second outgoing line sensor and the first common line sensor are obtained by solving.
The embodiment of the invention provides an electric meter box with an error self-checking function and a checking method thereof, wherein the error of a flow sensor in each flow array is calculated respectively, the establishment and calculation of a relative energy conservation formula of a minimum unit are ensured in a parallel cascade mode, and the calculated metering error value of a metering sensor is transmitted to other relative energy conservation relations in a cascade mode, so that the calculation efficiency and the calculation precision are improved.
In an embodiment of the present invention, in order to further embody the characteristics of the cascaded relative energy conservation relation, in combination with the embodiment of the present invention, after the metering error of the first outgoing line sensor and the metering error of the second outgoing line sensor are obtained through calculation, as shown in fig. 7, the method further includes:
in step 304, it is analyzed whether there are other outgoing line sensors and collinear sensors located at two adjacent sides of the first outgoing line sensor and the second outgoing line sensor in the electric meter box, and a relative energy conservation relationship may be formed between the outgoing line sensors and the collinear sensors and the first outgoing line sensor and/or the second outgoing line sensor, respectively.
In step 305, if the measurement error exists, a second phase pair energy conservation equation and/or a third phase pair energy conservation equation are further constructed with the first outgoing line sensor and/or the second outgoing line sensor, and the measurement error of the second phase pair energy conservation equation and/or the third phase pair energy conservation equation associated with the outgoing line sensor and the collinear sensor is solved by taking the solved measurement error in the first outgoing line sensor and/or the second outgoing line sensor as a known quantity.
Example 4:
the invention also provides a method for checking an electric meter box with an error self-checking function, which uses the electric meter box described in embodiment 1, and is different from embodiments 2 and 3 in that the position of the metering standard device provided by the invention is the position of the characteristic of the incoming line metering sensor, while the position of the metering standard device in embodiment 1 is the position of the characteristic of the outgoing line sensor, and the position of the metering standard device in embodiment 2 is the position of the characteristic of the collinear sensor, as shown in fig. 8, specifically:
in step 401, a measurement standard is connected in series with a power line for detection by a first incoming line measurement sensor in an electric meter box.
In step 402, after the electric energy data reported by the metering standard is obtained, a first outgoing line sensor and a second outgoing line sensor which form a relative energy conservation relation with the first incoming line metering sensor are determined.
The second outlet sensor is located on a second-level outlet port, and a transmission line of the first second-level outlet port and a transmission line of the second-level outlet port belong to an electric energy detection object of the first inlet wire metering sensor.
In step 403, the electric energy data detected by the metering standard device is substituted into the relative energy conservation equation formed by the detected electric energy data of the first outgoing line sensor, the detected electric energy data of the second outgoing line sensor and the detected electric energy data of the first incoming line metering sensor, and the respective metering errors of the first outgoing line sensor, the detected electric energy data of the second outgoing line sensor and the first incoming line metering sensor are obtained through solving.
The embodiment of the invention provides an electric meter box with an error self-checking function and a checking method thereof, wherein the error of a flow sensor in each flow array is calculated respectively, the establishment and calculation of a relative energy conservation formula of a minimum unit are ensured in a parallel cascade mode, and the calculated metering error value of a metering sensor is transmitted to other relative energy conservation relations in a cascade mode, so that the calculation efficiency and the calculation precision are improved.
In an embodiment of the present invention, in order to further embody the characteristics of the cascaded relative energy conservation relation, in combination with the embodiment of the present invention, after the metering error of the first outgoing line sensor and the metering error of the second outgoing line sensor are obtained through calculation, as shown in fig. 9, the method further includes:
in step 404, whether other outgoing line sensors and collinear sensors exist at two adjacent sides of the first outgoing line sensor and the second outgoing line sensor in the electric meter box or not is analyzed, and a relative energy conservation relation can be formed between the other outgoing line sensors and the first outgoing line sensor and/or the second outgoing line sensor respectively.
In step 405, if the measurement error exists, a second phase pair energy conservation equation and/or a third phase pair energy conservation equation are further constructed with the first outgoing line sensor and/or the second outgoing line sensor, and the measurement error of the outgoing line sensor and the collinear sensor which are associated in the second phase pair energy conservation equation and/or the third phase pair energy conservation equation is solved by taking the solved measurement error in the first outgoing line sensor and/or the second outgoing line sensor as a known quantity.
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 (10)
1. The utility model provides an ammeter case that possesses error self-checking function which characterized in that includes:
an incoming line of the electric meter box is split into n primary outgoing line ports, the primary outgoing line ports are used for respectively splitting two secondary outgoing line ports, transmission lines led out from the secondary outgoing line ports are used for supplying power to each household, incoming line sensors are arranged on the transmission lines from each primary outgoing line port to the corresponding secondary outgoing line port, and outgoing line sensors corresponding to each household are arranged on the transmission lines of the secondary outgoing line ports;
selecting two parallel transmission lines corresponding to the adjacent secondary line outlet ports from the two adjacent primary line outlet ports; arranging collinear sensors for the two parallel transmission lines;
each collinear sensor and the outgoing line sensors on the two parallel transmission lines which are responsible for detection form a relative energy conservation relation; each incoming line sensor and two outgoing line sensors under two outgoing line ports of the incoming line sensor form a relative energy conservation relation.
2. The ammeter box with error self-checking function as claimed in claim 1, wherein a wireless transmission module is disposed in each of the outgoing line sensor and the collinear sensor, and the wireless transmission module is configured to transmit the electric energy data detected by the outgoing line sensor and the collinear sensor to the concentrator or the server.
3. The ammeter box with the error self-checking function as claimed in claim 1, wherein a processor and a wireless transceiver module are further arranged in the ammeter box, specifically:
the outgoing line sensor and the collinear sensor in the electric meter box are respectively connected with the processor and used for transmitting the electric energy data detected by the outgoing line sensor and the collinear sensor to the processor;
the wireless transceiver module is connected with the processor and used for transmitting the electric energy data acquired by the processor to a concentrator or a server.
4. The electric meter box with the error self-checking function according to claim 1, wherein the number of the secondary outlet ports provided at the head-to-tail primary outlet ports is one, and no inlet line sensor is provided at the head-to-tail primary outlet ports.
5. A method for checking an electric meter box with an error self-checking function, which is characterized in that the electric meter box of any one of claims 1-4 is used, and specifically:
a metering standard device is connected in series with a transmission line of a first secondary outgoing line port in an electric meter box;
after the electric energy data reported by the metering standard device is obtained, a first common line sensor and a second line sensor which form a relative energy conservation relation with a first line sensor on the first secondary line outlet port are confirmed; the second outgoing line sensor is positioned on a second-level outgoing line port, and a transmission line of the first second-level outgoing line port and a transmission line of the second-level outgoing line port belong to an electric energy detection object of the first common line sensor together;
and substituting the electric energy data detected by the metering standard device as a known quantity into a relative energy conservation equation formed by the detected electric energy data of the first outlet sensor, the detected electric energy data of the second outlet sensor and the detected electric energy data of the first common line sensor, and solving to obtain the detected electric energy data of the first outlet sensor, the detected electric energy data of the second outlet sensor and the respective metering errors of the first common line sensor.
6. The method for verifying the electric meter box with the error self-verifying function according to claim 5, wherein after the metering error of the first outlet sensor and the metering error of the second outlet sensor are calculated, the method further comprises the following steps:
analyzing whether other outlet sensors and collinear sensors exist at two adjacent sides of the first outlet sensor and the second outlet sensor in the electric meter box or not, and forming a relative energy conservation relation with the first outlet sensor and/or the second outlet sensor respectively;
if the linear sensor exists, a second phase pair energy conservation equation and/or a third phase pair energy conservation equation are/is further constructed with the first outgoing line sensor and/or the second outgoing line sensor, and the metering error of the outgoing line sensor and the collinear sensor related in the second phase pair energy conservation equation and/or the third phase pair energy conservation equation is solved by taking the metering error solved in the first outgoing line sensor and/or the second outgoing line sensor as the known quantity.
7. A method for checking an electric meter box with an error self-checking function, which is characterized in that the electric meter box of any one of claims 1-4 is used, and specifically:
two power transmission lines which are responsible for detection by a first common line sensor in an electric meter box are connected in series with a metering standard device which can also detect the corresponding two power transmission lines;
after the electric energy data reported by the metering standard device are obtained, confirming a first outgoing line sensor and a second outgoing line sensor which form a relative energy conservation relation with the first common line sensor; the second outgoing line sensor is positioned on a second-level outgoing line port, and a transmission line of the first second-level outgoing line port and a transmission line of the second-level outgoing line port belong to an electric energy detection object of the first common line sensor together;
and substituting the electric energy data detected by the metering standard device as a known quantity into a relative energy conservation equation formed by the detected electric energy data of the first outlet sensor, the detected electric energy data of the second outlet sensor and the detected electric energy data of the first common line sensor, and solving to obtain the detected electric energy data of the first outlet sensor, the detected electric energy data of the second outlet sensor and the respective metering errors of the first common line sensor.
8. The method for verifying the electric meter box with the error self-verifying function according to claim 7, wherein after the metering error of the first outlet sensor and the metering error of the second outlet sensor are calculated, the method further comprises the following steps:
analyzing whether other outlet sensors and collinear sensors exist at two adjacent sides of the first outlet sensor and the second outlet sensor in the electric meter box or not, and forming a relative energy conservation relation with the first outlet sensor and/or the second outlet sensor respectively;
if the linear sensor exists, a second phase pair energy conservation equation and/or a third phase pair energy conservation equation are/is further constructed with the first outgoing line sensor and/or the second outgoing line sensor, and the metering error of the outgoing line sensor and the collinear sensor related in the second phase pair energy conservation equation and/or the third phase pair energy conservation equation is solved by taking the metering error solved in the first outgoing line sensor and/or the second outgoing line sensor as the known quantity.
9. A method for checking an electric meter box with an error self-checking function, which is characterized in that the electric meter box of any one of claims 1-4 is used, and specifically:
a metering standard device is connected in series with a transmission line which is responsible for detection by a first incoming line metering sensor in an electric meter box;
after the electric energy data reported by the metering standard device is obtained, a first outgoing line sensor and a second outgoing line sensor which form a relative energy conservation relation with the first incoming line metering sensor are confirmed; the second outlet sensor is positioned on a second-level outlet port, and a transmission line of the first second-level outlet port and a transmission line of the second-level outlet port belong to an electric energy detection object of the first inlet metering sensor together;
and substituting the electric energy data detected by the metering standard device as a known quantity into a relative energy conservation equation formed by the detected electric energy data of the first outlet sensor, the detected electric energy data of the second outlet sensor and the detected electric energy data of the first inlet metering sensor, and solving to obtain the detected electric energy data of the first outlet sensor, the detected electric energy data of the second outlet sensor and the respective metering errors of the first inlet metering sensor.
10. The method for verifying the electric meter box with the error self-verifying function according to claim 9, wherein after the metering error of the first outlet sensor and the metering error of the second outlet sensor are calculated, the method further comprises the following steps:
analyzing whether other outlet sensors and collinear sensors exist at two adjacent sides of the first outlet sensor and the second outlet sensor in the electric meter box or not, and forming a relative energy conservation relation with the first outlet sensor and/or the second outlet sensor respectively;
if the linear sensor exists, a second phase pair energy conservation equation and/or a third phase pair energy conservation equation are/is further constructed with the first outgoing line sensor and/or the second outgoing line sensor, and the metering error of the outgoing line sensor and the collinear sensor related in the second phase pair energy conservation equation and/or the third phase pair energy conservation equation is solved by taking the metering error solved in the first outgoing line sensor and/or the second outgoing line sensor as the known quantity.
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