CN115015828A - Error out-of-tolerance ammeter determining method, device, equipment and computer storage medium - Google Patents
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Abstract
The embodiment of the invention discloses a method, a device and equipment for determining an error out-of-tolerance electric meter and a computer storage medium. The method comprises the following steps: acquiring a first line loss residual error of each ammeter in a target station area within a reference time period, wherein the reference time period is a time period of stable operation of the target station area; acquiring a second line loss residual error of each ammeter in the target station area in a blind sample time period, wherein the blind sample time period is a time period in which an ammeter error is supposed to be out of tolerance, and the interval between the blind sample time period and the reference time period is greater than a first threshold and smaller than a second preset threshold; and determining an error out-of-tolerance ammeter according to the closeness degree of the first line loss residual and the second line loss residual. According to the method for determining the error out-of-tolerance electric meter, the electric meter with error mutation can be clearly and conveniently determined by acquiring the data of the electric meter and the data of the distribution area general table and performing theoretical calculation.
Description
Technical Field
The invention relates to the technical field of power supply, in particular to a method, a device and equipment for determining an error out-of-tolerance ammeter and a computer storage medium.
Background
The electric meter is a metering tool for metering household electric quantity of each user, the number of the electric meters in the electric network is huge, and manufacturers of the electric meters and the types of the electric meters are various. Each electric meter has a rated error, the electric meter is acceptable within the allowable range of the rated error, but the error exceeding the rated error causes certain economic loss to the power supply company. At present, the electric meter is usually measured regularly by a maintainer to judge whether the error of the electric meter exceeds the rated error, but the manual measurement method is not only low in efficiency, but also wastes a large amount of manpower and material resources, so that the invention provides a method, a device, equipment and a computer storage medium for determining the error out-of-tolerance electric meter.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments, and in this section as well as in the abstract and the title of the invention of this application some simplifications or omissions may be made to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made keeping in mind the above problems occurring in the prior art and/or the problems occurring in the prior art.
Therefore, the technical problem to be solved by the invention is that at present, a maintainer usually measures the electric meter regularly to judge whether the error of the electric meter exceeds the rated error, but the manual measurement method is not only low in efficiency, but also wastes a large amount of manpower and material resources.
In order to solve the technical problems, the invention provides the following technical scheme: an error out-of-tolerance electricity meter determining method comprises the following steps,
acquiring a first line loss residual error of each ammeter in a target station area within a reference time period, wherein the reference time period is a time period of stable operation of the target station area;
acquiring a second line loss residual error of each ammeter in the target station area in a blind sample time period, wherein the blind sample time period is a time period in which an ammeter error is supposed to be out of tolerance, and the interval between the blind sample time period and the reference time period is greater than a first threshold and smaller than a second preset threshold;
and determining an error out-of-tolerance ammeter according to the closeness degree of the first line loss residual and the second line loss residual.
As a preferable embodiment of the method for determining an error out-of-tolerance electric meter according to the present invention, wherein: the obtaining of the second line loss residual within the blind sample time period of each electric meter in the target distribution area includes performing multiple calculations based on the power consumption and the electric quantity adjustment amplitude of each electric meter in the target distribution area to obtain multiple second line loss residuals, wherein the electric quantity adjustment amplitude is determined according to an acceptable error of the electric meter;
the determining an error out-of-tolerance meter according to the closeness degree of the first line loss residual and the second line loss residual includes determining an error out-of-tolerance meter according to the closeness degree of a plurality of second line loss residuals and the first line loss residual of each meter.
As a preferable embodiment of the method for determining an error out-of-tolerance electric meter according to the present invention, wherein: the method for determining the error out-of-tolerance electric meter according to the closeness degree of the first line loss residual error and the second line loss residual error comprises the following steps,
acquiring a first evaluation index corresponding to the first line loss residual;
acquiring a second evaluation index corresponding to each second line loss residual error, wherein evaluation index parameters in the first evaluation index and the second evaluation index comprise at least one of a mean value, a positive value and a negative value, a standard deviation, a skewness, an IQR index and an electric quantity distribution histogram;
determining a plurality of multi-dimensional residual characteristic index scores according to the difference between the first evaluation index and the plurality of second evaluation indexes;
and determining an error out-of-tolerance electric meter based on the optimal multi-dimensional residual error characteristic index score and a preset index score of each electric meter, wherein the optimal multi-dimensional residual error characteristic index score of each electric meter is the smallest index score in the multi-dimensional residual error characteristic index scores of each electric meter.
As a preferable embodiment of the method for determining an error out-of-tolerance electric meter according to the present invention, wherein: the determining a plurality of multi-dimensional residual feature indicator scores based on a difference between the first evaluation indicator and the plurality of second evaluation indicators includes,
acquiring index weight corresponding to each evaluation index parameter;
determining a plurality of multi-dimensional residual feature indicator scores based on the difference between each indicator weight, the first evaluation indicator, and the plurality of second evaluation indicators.
As a preferable embodiment of the method for determining an error out-of-tolerance electric meter according to the present invention, wherein: the above determining an error out-of-tolerance meter based on the minimum multi-dimensional residual characteristic index score and the preset index score of each meter includes,
and under the condition that the optimal multi-dimensional residual error characteristic index scores of all the electric meters are larger than the preset index score, all the electric meters in the target distribution area have no error out-of-tolerance phenomenon.
As a preferable embodiment of the method for determining an error out-of-tolerance electric meter according to the present invention, wherein: the above determining an error out-of-tolerance meter based on the minimum multi-dimensional residual characteristic index score and the preset index score of each meter includes,
and under the condition that the optimal multi-dimensional residual characteristic index scores of the multiple electric meters are smaller than or equal to the preset index score, the electric meter corresponding to the minimum optimal multi-dimensional residual characteristic index scores is an error out-of-tolerance electric meter.
As a preferable embodiment of the method for determining an error out-of-tolerance electric meter according to the present invention, wherein: and calculating according to an energy conservation law and kirchhoff law based on daily freezing data corresponding to each electric meter in the target distribution area to obtain the first line loss residual error and the second line loss residual error.
The invention also provides an error out-of-tolerance electric meter determining device, which comprises,
the system comprises a first obtaining unit, a second obtaining unit and a third obtaining unit, wherein the first obtaining unit is used for obtaining a first line loss residual error in a reference time period of each ammeter in a target transformer area, and the reference time period is a time period of stable operation of the target transformer area;
a second obtaining unit, configured to obtain a second line loss residual error in a blind sample time period of each ammeter in the target distribution area, where the blind sample time period is a time period in which an error of the ammeter is assumed to occur, and an interval between the blind sample time period and the reference time period is greater than a first threshold and smaller than a second preset threshold;
and the determining unit is used for determining an error over-tolerance ammeter according to the closeness degree of the first line loss residual error and the second line loss residual error.
The present invention also provides an electronic device, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor is configured to implement the steps of the method for determining an out-of-tolerance electric meter according to any one of the first aspect when executing the computer program stored in the memory.
The invention also proposes a computer-readable storage medium on which a computer program is stored which, when being executed by a processor, carries out the method of determining an out-of-error meter according to any one of claims 1 to 7.
The invention has the beneficial effects that: according to the method for determining the error out-of-tolerance electric meters, the reference time interval and the blind sample time interval are set, the approaching degree of line loss residual errors of each electric meter in the target station area in the blind sample time interval and the reference time interval is respectively obtained, and the electric energy meters with error mutation in the target station area are positioned in a 'search error' mode. The method can clearly and conveniently determine the ammeter with error mutation by acquiring the data of the ammeter and the data of the district summary table and by theoretical calculation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
fig. 1 is a schematic flow chart of a method for determining an out-of-tolerance error electric meter according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram illustrating a reference time period and a blind sample time period division principle provided in an embodiment of the present application;
fig. 3 is a schematic circuit structure diagram according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of an error out-of-tolerance electric meter determination apparatus according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an error out-of-tolerance electric meter determination electronic device according to an embodiment of the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially according to the general scale for convenience of illustration when describing the embodiments of the present invention, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1, the present invention provides a method for determining an out-of-tolerance error electric meter, including,
s1: acquiring a first line loss residual error of each ammeter in a target distribution room in a reference time period, wherein the reference time period is a time period of stable operation of the target distribution room;
s2: acquiring a second line loss residual error of each ammeter in the target station area in a blind sample time period, wherein the blind sample time period is a time period in which an ammeter error is supposed to be out of tolerance, and the interval between the blind sample time period and the reference time period is greater than a first threshold and smaller than a second preset threshold;
s3: and determining an error out-of-tolerance ammeter according to the closeness degree of the first line loss residual and the second line loss residual.
Specifically, the invention mainly determines whether the error is out of tolerance on the ammeter based on the line loss residual error characteristics in the target transformer area. Assuming that the data acquisition period is N days, that is, effective data of N days are acquired in total, if the meter has a sudden error change in the meter within the last ln (last N) day (hereinafter referred to as a blind sample time period), the abnormal electric energy meter and the out-of-tolerance range thereof can be quickly located through the characteristic change of the line loss residual error. The specific method comprises the following steps: first, a reference time period and a blind sample time period are selected. The blind sample time period is the last LN (last N) day, the reference time period (REF _ N) should be close to the blind sample time period (LN), but because the point of the sudden change of the metering point is not determined yet and is only a fuzzy range, a certain interval is preferably arranged between the reference time period (REF _ N) and the blind sample time period (LN) and cannot be closely adjacent, namely, the interval is larger than a first threshold and smaller than a second preset threshold, and the situation that the fitting effect is poor due to power utilization fluctuation, seasonal variation and other factors can be effectively avoided. May take the form as shown in figure 2. By obtaining each second line loss residual error in the blind sample time period and the first line loss residual error in the reference time period, and comparing the closeness degree of the second line loss residual error and the first line loss residual error of each ammeter, whether an out-of-tolerance ammeter exists in the transformer area can be determined.
In summary, according to the method for determining the error out-of-tolerance electric meter, the reference time interval and the blind sample time interval are set, the closeness degree of the line loss residual error of each electric meter in the target station area in the blind sample time interval and the reference time interval is respectively obtained, and the electric energy meter with the error mutation in the target station area is positioned in a 'search error' mode. According to the method, the ammeter with error mutation can be clearly and conveniently determined through acquiring data of the ammeter and data of the distribution area general table and theoretical calculation.
Example 2
Referring to fig. 1 to 5, a second embodiment of the present invention is based on the previous embodiment, and is different from the previous embodiment in that:
in some examples, the obtaining a second line loss residual in the blind sample time period of each electric meter in the target station area includes:
calculating for multiple times based on the power consumption of each ammeter in the target distribution area and the electric quantity adjustment amplitude to obtain a plurality of second line loss residuals, wherein the electric quantity adjustment amplitude is determined according to the acceptable error of the ammeter;
the determining an error out-of-tolerance electric meter according to the proximity of the first line loss residual and the second line loss residual includes:
and determining an error out-of-tolerance electric meter according to the closeness degree of the plurality of second line loss residual errors and the first line loss residual error of each electric meter.
Specifically, each electric meter corresponds to a plurality of second line loss residual errors, the corresponding second line loss residual errors can be obtained by changing the adjustment range of the electric meter, the adjustment range is determined according to the acceptable error of the electric meter, for example, three thousandths or five thousandths, and if the acceptable error is five thousandths, any error within five thousandths can be calculated, so that the second line loss residual errors can be obtained.
In some examples, the determining an error out-of-tolerance meter based on the proximity of the first line loss residual and the second line loss residual includes:
acquiring a first evaluation index corresponding to the first line loss residual;
acquiring a second evaluation index corresponding to each second line loss residual error, wherein evaluation index parameters in the first evaluation index and the second evaluation index comprise at least one of a mean value, a positive value and a negative value, a standard deviation, a skewness, an IQR index and an electric quantity distribution histogram;
determining a plurality of multi-dimensional residual characteristic index scores according to the difference between the first evaluation index and the plurality of second evaluation indexes;
and determining an error out-of-tolerance electric meter based on the optimal multi-dimensional residual error characteristic index score and a preset index score of each electric meter, wherein the optimal multi-dimensional residual error characteristic index score of each electric meter is the smallest index score in the multi-dimensional residual error characteristic index scores of each electric meter.
Specifically, after the line loss residual is obtained, one or more of a mean value (dYmean), a positive and negative value number (dYsign), a standard deviation (dYstd), a skewness (dYskew), an IQR (four-bit-spacing) index (dYiqr) and a power distribution histogram (dYhist) may be combined to obtain a minimum index score (an optimal multi-dimensional residual characteristic index score) and a preset index score in the multi-dimensional residual characteristic indexes of each electric meter, so as to determine whether an error electric meter exists, where the preset index score is a standard value obtained based on a standard electric meter and a platform area and is used as a judgment threshold.
In some examples, the determining a plurality of multi-dimensional residual feature indicator scores according to a difference between the first evaluation indicator and the plurality of second evaluation indicators includes:
acquiring index weight corresponding to each evaluation index parameter;
determining a plurality of multi-dimensional residual feature indicator scores based on the difference between each indicator weight, the first evaluation indicator, and the plurality of second evaluation indicators.
Specifically, the index scores obtained based on the characteristic indexes can be added and summed according to the weight, and the index score constructed based on the multi-dimensional residual error characteristics is solved, so that multiple index characteristics can be integrated, and the judgment result is more accurate.
In some examples, the determining an error out-of-tolerance meter based on the minimum multi-dimensional residual characteristic indicator score and the preset indicator score for each meter includes:
and under the condition that the optimal multi-dimensional residual error characteristic index scores of all the electric meters are larger than the preset index score, all the electric meters in the target distribution area have no error out-of-tolerance phenomenon.
Specifically, all the adjustment range calculations are traversed on all the electric meters, and if no electric meter with the optimal evaluation index within the threshold range exists, the electric meter with the sudden error change in the distribution area is considered to be absent, namely, all the electric meters in the target distribution area do not have the phenomenon of the error out-of-tolerance.
In some examples, the determining an error out-of-tolerance meter based on the minimum multi-dimensional residual characteristic indicator score and the preset indicator score for each meter includes:
and under the condition that the optimal multi-dimensional residual characteristic index scores of the multiple electric meters are smaller than or equal to the preset index score, the electric meter corresponding to the minimum optimal multi-dimensional residual characteristic index scores is an error out-of-tolerance electric meter.
Specifically, if there is an electric energy meter whose optimal evaluation index is within the preset index score range, the optimal dimension residual characteristic index scores of all the electric energy meters meeting the conditions are sorted according to the scores, and the electric energy meter corresponding to the minimum score is selected, so that the initial data (the original metering data before the electric quantity is not adjusted) of the electric energy meter in the last LN day is out-of-tolerance, and the out-of-tolerance amplitude is-Em.
In some examples, the first line loss residual and the second line loss residual are obtained according to energy conservation law and kirchhoff law based on daily freeze data corresponding to each electric meter in the target region.
Specifically, according to the law of conservation of energy, based on the topological structure in the target station area, a mathematical relation is constructed, that is:
the total power supply of the target station area is the sum of the actual power consumption of each sub-meter, the line loss and the fixed loss of the station area
As shown in formula (1):
p is the total number of table partitions, only;
y (i) -measuring the total electric energy of the power supply meter in the period i, kWh;
ε j the relative error of estimation of the branch rhyme is approximated when the relative error of the electric energy meter is less than 1;
ε y -a platform area line loss rate;
ε 0 -station area fixed loss.
As shown in fig. 2, since the line loss has a large influence on the calculation result, the line loss is decomposed and refined by introducing the KCL concept of kirchhoff's law. Obtaining the relation shown in the formula (2):
therefore, the sum of the line loss components ∑ (from the line loss coefficient × the square of the sub-meter electric quantities/the interval time + the cross-line loss coefficient × the product of two sub-meter electric quantities/the interval time).
The sum of the line loss components is shown in equation (3):
the line loss coefficient is as shown in equation (4):
formula (5) is derived from formulae (1), (3) and (4):
the line loss can be calculated according to equation (5).
And calculating a first line loss residual dYerr _1 using equation (6)
Reducing the power consumption of the electric energy meter according to the out-of-tolerance range, recalculating the second line loss residual evaluation index dYerr _2(Em) of the blind sample time period, as shown in formula (7):
referring to fig. 4, an error out-of-tolerance meter determining apparatus 100 according to an embodiment of the present application includes:
a first obtaining unit 101, configured to obtain a first line loss residual error in a reference time period of each electric meter in a target distribution area, where the reference time period is a time period in which the target distribution area stably operates;
a second obtaining unit 102, configured to obtain a second line loss residual error in a blind sample time period of each ammeter in the target distribution area, where the blind sample time period is a time period in which an error of the ammeter is assumed to occur, and an interval between the blind sample time period and the reference time period is greater than a first threshold and smaller than a second preset threshold;
a determining unit 103, configured to determine an error out-of-tolerance meter according to a proximity of the first line loss residual and the second line loss residual.
As shown in fig. 5, an electronic device 200 is further provided in the embodiments of the present application, and includes a memory 201, a processor 202, and a computer program 203 stored in the memory 201 and executable on the processor 202, where the processor 202 implements the steps of any one of the above-mentioned methods for determining an error out-of-tolerance meter when the computer program 203 is executed by the processor 202.
Since the electronic device described in this embodiment is a device used for implementing an error over-tolerance electric meter determining apparatus in this embodiment, based on the method described in this embodiment, a person skilled in the art can understand a specific implementation manner of the electronic device of this embodiment and various variations thereof, so that how to implement the method in this embodiment by the electronic device is not described in detail herein, and as long as the person skilled in the art implements the device used for implementing the method in this embodiment, the scope of protection intended by this application is included.
In a specific implementation, the computer program 203 may implement any of the embodiments corresponding to fig. 1 when executed by a processor.
It should be noted that, in the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to relevant descriptions of other embodiments for parts that are not described in detail in a certain embodiment.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
An embodiment of the present application further provides a computer program product, where the computer program product includes computer software instructions, and when the computer software instructions are run on a processing device, the processing device is caused to execute the flow of the error out-of-tolerance electric meter determination method in the corresponding embodiment of fig. 1.
The computer program product includes one or more computer instructions. The procedures or functions according to the embodiments of the present application are all or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). A computer-readable storage medium may be any available medium that a computer can store or a data storage device, such as a server, a data center, etc., that is integrated with one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is only a logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. An error out-of-tolerance electric meter determination method is characterized by comprising the following steps: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
acquiring a first line loss residual error of each ammeter in a target station area in a reference time period, wherein the reference time period is a time period of stable operation of the target station area;
acquiring a second line loss residual error of each ammeter in the target station area in a blind sample time period, wherein the blind sample time period is a time period in which an ammeter error is supposed to be out of tolerance, and the interval between the blind sample time period and the reference time period is greater than a first threshold and smaller than a second preset threshold;
and determining an error out-of-tolerance ammeter according to the closeness degree of the first line loss residual error and the second line loss residual error.
2. The method of determining an out-of-tolerance meter of claim 1, wherein: the obtaining of the second line loss residual error of each electric meter in the target distribution area in the blind sample time period comprises calculating for multiple times based on the power consumption and the electric quantity adjustment amplitude of each electric meter in the target distribution area to obtain multiple second line loss residual errors, wherein the electric quantity adjustment amplitude is determined according to the acceptable error of the electric meter;
and determining error out-of-tolerance electric meters according to the closeness degree of the first line loss residual and the second line loss residual, wherein the error out-of-tolerance electric meters comprise a plurality of second line loss residual of each electric meter and the closeness degree of the first line loss residual.
3. The method of determining an out-of-tolerance meter of claim 2, wherein: said determining an error out-of-tolerance meter based on a proximity of said first line loss residual and said second line loss residual, comprising,
acquiring a first evaluation index corresponding to the first line loss residual error;
acquiring a second evaluation index corresponding to each second line loss residual, wherein evaluation index parameters in the first evaluation index and the second evaluation index comprise at least one of a mean value, the number of positive and negative values, a standard deviation, a skewness, an IQR index and an electric quantity distribution histogram;
determining a plurality of multi-dimensional residual characteristic indicator scores according to the difference between the first evaluation indicator and the plurality of second evaluation indicators;
and determining an error out-of-tolerance electric meter based on the optimal multi-dimensional residual error characteristic index score and a preset index score of each electric meter, wherein the optimal multi-dimensional residual error characteristic index score of each electric meter is the smallest index score in the multi-dimensional residual error characteristic index scores of each electric meter.
4. The method of determining an out-of-tolerance meter of claim 3, wherein: the determining a plurality of multi-dimensional residual feature indicator scores from a difference of the first evaluation indicator and the plurality of second evaluation indicators includes,
acquiring index weight corresponding to each evaluation index parameter;
determining a plurality of multi-dimensional residual feature indicator scores based on each indicator weight, the first evaluation indicator, and the difference of the plurality of second evaluation indicators.
5. The method of determining an error out-of-tolerance meter according to claim 3 or 4, wherein: the method comprises the step of determining error out-of-tolerance electric meters based on the minimum multi-dimensional residual characteristic index score and the preset index score of each electric meter, wherein under the condition that the optimal multi-dimensional residual characteristic index scores of all the electric meters are larger than the preset index score, all the electric meters in the target distribution room do not have the error out-of-tolerance phenomenon.
6. The method of determining an out-of-tolerance meter of claim 5, wherein: the method comprises the step of determining an error out-of-tolerance electric meter based on the minimum multi-dimensional residual characteristic index score and the preset index score of each electric meter, wherein the electric meter corresponding to the minimum multi-dimensional residual characteristic index score is the error out-of-tolerance electric meter under the condition that the optimal multi-dimensional residual characteristic index score of the plurality of electric meters is smaller than or equal to the preset index score.
7. The method of determining an out-of-tolerance meter of claim 6, wherein: and calculating according to an energy conservation law and a kirchhoff law based on daily freezing data corresponding to each electric meter in the target transformer area to obtain the first line loss residual error and the second line loss residual error.
8. An error out-of-tolerance meter determination apparatus (100) comprising,
the first obtaining unit (101) is used for obtaining a first line loss residual error in a reference time period of each ammeter in a target distribution area, wherein the reference time period is a time period of stable operation of the target distribution area;
a second obtaining unit (102) configured to obtain a second line loss residual error in a blind sample time period of each ammeter in the target station area, where the blind sample time period is a time period in which an ammeter error is assumed to be out of tolerance, and an interval between the blind sample time period and the reference time period is greater than a first threshold and smaller than a second preset threshold;
a determining unit (103) for determining an error out-of-tolerance ammeter according to the closeness of the first line loss residual and the second line loss residual.
9. An electronic device (200) comprising a memory (201), a processor (202) and a computer program (203) stored in the memory (201) and being executable on the processor (202), characterized in that the processor (202) is adapted to implement the steps of the error overproof meter determination method according to any of claims 1-7 when executing the computer program (203) stored in the memory (201).
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method for error-out-of-tolerance meter determination according to any one of claims 1 to 7.
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