Remote verification method and device for charging equipment and electronic equipment

Abstract

The invention relates to a remote verification method and device for charging equipment and electronic equipment, and the method comprises the steps: obtaining a first power sequence and a second power sequence, and enabling the first power sequence and the second power sequence to be collected from a built-in metering module and a remote metering module of to-be-verified charging equipment; determining an accumulated verification error and an accumulated time error between the first power sequence and the second power sequence through an iterative assignment function; and judging whether the charging equipment to be verified is qualified or not according to the accumulative verification error and the accumulative time error after iteration assignment is completed. Compared with the direct comparison of the metering results of the two metering modules, the method can effectively avoid the condition that the differences in the metering process counteract each other, thereby improving the verification accuracy, and solving the problem of low verification accuracy in the current remote verification method of the charging pile.

Description

Technical Field

[0001] The present application relates to the field of charging pile calibration, and in particular to a remote calibration method, device and electronic equipment for charging equipment. Background Art

[0002] At present, the calibration methods for charging piles on the market are mainly concentrated in three aspects: 1. The method based on the line loss model, establishes the charging pile metering equipment, the charging area total table, and the line loss information to establish the charging area energy conservation equation, and realizes the estimation of the calibration error of the charging pile metering equipment. This method relies heavily on the quality of the model and the accuracy of the data; 2. The method of calibrating the charging piles one by one based on specific calibration equipment. This method requires the deployment of special equipment on site, which consumes manpower and time. With the rapid development of electric vehicles in China, more charging areas will inevitably be established in the future, and the timeliness of calibration will become more important. 3. The method of online detection of charging piles based on the standard remote calibration module. At present, this method is based on the electric energy value provided by the operation management platform at the end of the charging order (provided by the built-in metering module of the charging pile) and the electric energy value measured by the online remote calibration module to complete the calibration of the charging pile. This method relies heavily on the final settlement electric energy of the complete charging process. For the charging piles that need to be calibrated, the charging piles need to complete the current charging order before they can be calibrated, and thus real-time calibration cannot be achieved. At the same time, during the complete charging process, the abnormalities in power metering may offset each other. For example, for a certain charging pile, the metering inaccuracy of its built-in metering module is fluctuating, that is, sometimes more metering is performed and sometimes less metering is performed. Then, it may be coincidental that the two metering errors offset each other in a charging cycle, making the metering value and the actual value in the charging cycle closer. In this case, by comparing the final metering value of the charging process, it is impossible to identify the problem of the built-in metering module of the charging pile.

[0003] The current remote calibration method for charging piles has the problem of low calibration accuracy, and no effective solution has been proposed yet. Summary of the invention

[0004] The present invention provides a remote calibration method, device and electronic device for charging equipment to solve the problem of low calibration accuracy in the current remote calibration method for charging piles.

[0005] In a first aspect, the present invention provides a remote verification method for a charging device, comprising: Acquire a first power sequence and a second power sequence, wherein the first power sequence and the second power sequence are respectively acquired from a built-in metering module and a remote metering module of the charging device to be inspected; Determine the cumulative verification error between the first power sequence and the second power sequence by iterative assignment function P loss and the accumulated time error T loss , the iterative assignment functions include:

[0006] in, and Respectively represent the first power sequence x The first sequence value and the second power sequence y sequence values, express and The distance between and Respectively and The measurement time, P loss and T loss The initial value of is 0. x and y The initial values ​​of are the lengths of the first power sequence and the second power sequence. x and y Iteration reduction, when x and y When all are 1, the iteration assignment is completed; Whether the charging device to be inspected is qualified is judged according to the accumulated inspection error and the accumulated time error after the iterative assignment is completed.

[0007] In a second aspect, the present invention provides a remote verification device for a charging device, comprising: A data acquisition module, used to acquire a first power sequence and a second power sequence, wherein the first power sequence and the second power sequence are respectively acquired from a built-in metering module and a remote metering module of the charging device to be inspected; A remote calibration module is used to determine the cumulative calibration error between the first power sequence and the second power sequence through an iterative assignment function P loss and the accumulated time error T loss , the iterative assignment functions include:

[0008] in, and Respectively represent the first power sequence x The first sequence value and the second power sequence y sequence values, express and The distance between and Respectively and The measurement time, P loss and T loss The initial value of is 0. x and y The initial values ​​of are the total lengths of the first power sequence and the second power sequence. x and y Iteration reduction, when x and y When all are 1, the iteration assignment is completed; The verification and issuing module is used to determine whether the charging device to be verified is qualified according to the accumulated verification error and the accumulated time error after the iterative assignment is completed.

[0009] In a third aspect, the present invention provides an electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute the remote verification method of the charging device described in the first aspect.

[0010] In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the remote verification method of the charging device described in the first aspect are implemented.

[0011] Compared with the related art, the remote calibration method of the charging equipment provided by the present invention can effectively determine the difference in the metering process of the two metering modules by accumulating the difference in the metering data sequence generated by the built-in metering module and the remote metering module of the charging equipment to be verified, and the data sequence difference will not be offset. Compared with directly comparing the metering results of the two metering modules, it can effectively avoid the situation where the differences in the metering process offset each other, thereby improving the accuracy of the calibration, and solving the problem of low calibration accuracy in the current remote calibration method of the charging pile.

[0012] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a flow chart of a remote verification method for a charging device provided in this embodiment; Figure 2 is an example diagram of a remote verification device for a charging device provided in this embodiment. DETAILED DESCRIPTION

[0014] In order to more clearly understand the purpose, technical solutions and advantages of the present application, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0015] Unless otherwise defined, the technical terms or scientific terms involved in this application shall have the general meaning understood by people with general skills in the technical field to which this application belongs. The words "one", "a", "the", "these" and the like in this application do not indicate a quantitative limitation, and they may be singular or plural. The terms "include", "comprise", "have" and any variants thereof involved in this application are intended to cover non-exclusive inclusions; for example, a process, method and system, product or device comprising a series of steps or modules (units) is not limited to the listed steps or modules (units), but may include unlisted steps or modules (units), or may include other steps or modules (units) inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there may be three relationships, for example, "A and / or B" may mean: A exists alone, A and B exist at the same time, and B exists alone. Generally, the character " / " indicates that the objects associated with each other are in an "or" relationship. The terms "first", "second", "third", etc. in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0016] In this embodiment, a remote verification method for a charging device is provided. Figure 1 is a flow chart of the remote verification method of the charging device provided in this embodiment. Figure 1 As shown, the process includes step S110, step S120 and step S130.

[0017] Step S110: acquiring a first power sequence and a second power sequence, wherein the first power sequence and the second power sequence are respectively acquired from a built-in metering module and a remote metering module of the charging device to be inspected.

[0018] In this embodiment, the charging device to be inspected is a charging pile, and the built-in metering module is a metering module built into the charging pile. Both the built-in metering module and the remote metering module can measure the charging process of the charging pile. In the prior art, after the charging pile completes at least one complete charging order, the metering results of the charging process by the built-in metering module and the remote metering module are compared respectively, so as to realize the inspection of the charging pile, that is, to determine whether the built-in metering module of the charging pile is normal. The remote inspection method has the problem of low inspection accuracy. In order to solve the above problem, the present embodiment focuses on comparing the metering process data of the built-in metering module and the remote metering module, and the metering process data is mainly power data. Among them, each sequence value in the first power sequence represents the charging power of the charging device to be inspected measured by the built-in metering module at different times, and each sequence value in the second power sequence represents the charging power of the charging device to be inspected measured by the remote metering module at different times. By comparing the first power sequence and the second power sequence, it can be determined whether the built-in metering module of the charging device to be inspected is normal.

[0019] In this embodiment, in order to better compare the first power sequence and the second power sequence, key points can be sampled from the original power sequences measured by the built-in metering module and the remote metering module to form the first power sequence and the second power sequence. Specifically, obtaining the first power sequence and the second power sequence includes steps S111, S112, S113, S114, and S115.

[0020] Step S111 : collecting a first current sequence, a first voltage sequence, and a third power sequence from the built-in metering module, and collecting a second current sequence, a second voltage sequence, and a fourth power sequence from the remote metering module.

[0021] Among them, the first current sequence, the first voltage sequence and the third power sequence are all original data sequences collected from the built-in metering module, and the sequence values ​​with the same timestamp among the three sequences are corresponding, and the timestamp of the sequence value represents the metering time of the built-in metering module for the sequence value. Similarly, the second current sequence, the second voltage sequence and the fourth power sequence are all original data sequences collected from the remote metering module, and the sequence values ​​with the same timestamp among the three sequences are corresponding, and the timestamp of the sequence value represents the metering time of the remote metering module for the sequence value.

[0022] Step S112: performing zero removal processing on the third power sequence and the fourth power sequence. The zero removal processing includes removing sequence values ​​equal to zero in the sequence.

[0023] This step is used to remove some invalid sequence values ​​in the third power sequence and the fourth power sequence.

[0024] Step S113, determining a sequence change turning point in the first current sequence and the first voltage sequence and sampling a corresponding sequence value in the third power sequence to form a first power sequence.

[0025] This step is used to determine the key sequence value in the third power sequence. Since the sequence values ​​between the first current sequence, the first voltage sequence and the third power sequence are corresponding, this step first determines the sequence change turning points in the first current sequence and the first voltage sequence respectively, and determines the sequence values ​​corresponding to these sequence change turning points in the third power sequence (correspondence means having the same timestamp) as key sequence values, and samples these key sequence values ​​to form the first power sequence.

[0026] Step S114, determining a sequence change turning point in the second current sequence and the second voltage sequence and sampling a corresponding sequence value in the fourth power sequence to form a second power sequence.

[0027] This step is used to determine the key sequence value in the fourth power sequence. Since the sequence values ​​between the second current sequence, the second voltage sequence and the fourth power sequence are corresponding, this step first determines the sequence change turning points in the second current sequence and the second voltage sequence respectively, and determines the sequence values ​​corresponding to these sequence change turning points in the fourth power sequence (correspondence means having the same timestamp) as key sequence values, and samples these key sequence values ​​to form the second power sequence.

[0028] In step S113 and step S114, there are different sequence change trends before and after the sequence change turning point. For example, the sequence change turning point can be a local peak value or a local valley value of the sequence.

[0029] Specifically, in this embodiment, the sequence change turning point is determined by an index value, and the index value is determined by an index function, and the index function is:

[0030] Among them, Index represents the index set of sequence values ​​at the turning point of sequence change in sequence X. diff represents the difference function, sign represents the symbolic function, find Returns the index value of the vector that satisfies the condition.

[0031] Through the above index function, the index values ​​of the sequence change turning points of each sequence can be determined respectively, and then the corresponding key sequence values ​​can be determined in the third power sequence and the fourth power sequence. Sampling these key sequence values ​​can form the first power sequence and the second power sequence.

[0032] It should be noted that the index values ​​of the sequence change turning points between the first current sequence and the first voltage sequence may be repeated, and the index value sets of the two sequences can be deduplicated and reordered. Similarly, the index value sets of the second current sequence and the second voltage sequence can be deduplicated and reordered.

[0033] As follows, step S110 and step S120 in this embodiment are described in detail by using an example.

[0034] First, the master station system collects data from two types of metering modules of the charging pile to be tested at a fixed frequency. (Third power sequence), metering time (metering time series of power, voltage and current), voltage (first voltage sequence) and current (first current sequence), where R is a set of real numbers, N The number of collections of the built-in metering module under the current charging order (the length of the first voltage sequence, the first current sequence, and the third power sequence); the power in the remote metering module (Fourth power sequence), metering time (metering time series of power, voltage and current), voltage (Second voltage sequence) and current (Second current sequence), where M is the number of data collected by the remote metering module under the current charging order (the length of the second voltage sequence, the second current sequence, and the fourth power sequence). Since the metering frequencies and start times of the two metering modules are different, the metering time series of the two types of metering modules are different.

[0035] Secondly, perform power sequence data processing. Screen the power sequence P B and P A , remove the data with power equal to 0 in the sequence.

[0036] Then, the key points of the sequence are selected. The turning points of the voltage sequence and current sequence of the built-in metering module and the remote metering module are used as key points for collection. Specifically, the selection of key points follows the following rules:

[0037] in, diff is the difference function, sign is a symbolic function, there is a relationship , find To return the vector subscript that satisfies the condition, , is the sequence key point subscript set obtained by screening the current sequence and voltage sequence. The final key point subscript set is:

[0038] in, sort is the sorting function, unique is a de-duplication function, which rearranges the vector subscripts from small to large, and D is the length of the key point subscript set.

[0039] Through the above selection rules, the key point subscript sets of the first current sequence and the first voltage sequence can be obtained respectively, and the key point subscript sets of the second current sequence and the second voltage sequence can be obtained respectively. Among them, the key point subscript sets are the index values ​​of the turning points of the sequence changes.

[0040] Finally, according to the key point index set, the power sequence of the built-in metering module is regenerated (First power series), metering time series , N 1 is the new sequence length and the power sequence of the remote metering module , Measuring time series , M 1 is the new sequence length.

[0041] Step S120, determining the cumulative verification error between the first power sequence and the second power sequence by iterating the assignment function P loss and the accumulated time error T loss , the iterative assignment functions include:

[0042] in, k Represents the number of iterations, and its initial value is 0. and Respectively represent the first power sequence x The first sequence value and the second power sequence y sequence values, express and The distance between and Respectively and The measurement time, P loss and T loss The initial value of is 0. x and y The initial values ​​are the length of the first power sequence N 1 and the length of the second power sequenceM 1. During the iterative assignment process x and y Iteration reduction, when x and y When both are 1, the iteration assignment is completed.

[0043] In this embodiment, the iterative assignment function also includes: like x =1, y>1, then x =1, y =y -1; like x >1、 y =1, then x =x -1. y =1; otherwise:

[0044] Among them, E s Represents the unit vector E s Column vector, F represents the assignment matrix, find Indicates returning the vector subscript that meets the conditions. min represents the minimum function, U represents the distance matrix, express and The previous cumulative error distance, w represents the weight group, w=[0.2,0.3,0.3].

[0045] From the above iterative assignment function, we can see that in each generation of assignment, renew P loss , before the update P loss Plus the current Get the updated P loss , and with x and y The iterative changes in each generation assignment are different. Similarly, in each generation of assignment, renew T loss , before the update T loss Plus the current Get the updated T loss , and with x and y The iterative changes in each generation assignment are different.

[0046] It should be noted that in each generation and They are all positive numbers, and during the iterative assignment process, the verification error and time error will not be offset.

[0047] when x and y When all are updated to 1, the iteration ends. P loss It can effectively reflect the difference between the first power sequence and the second power sequence, as well as the final T loss It can effectively reflect the difference between two measurement time series.

[0048] It should be noted that in the assignment function, “=” means assignment.

[0049] Step S130, judging whether the charging device to be inspected is qualified according to the accumulated inspection error and the accumulated time error after the iterative assignment is completed.

[0050] In this embodiment, when the cumulative inspection error and the cumulative time error exceed the inspection error upper limit and the time error upper limit respectively, the charging device to be inspected is determined to be unqualified.

[0051] The accumulated verification error and the accumulated time error may be first converted and then compared with the corresponding standard upper limit.

[0052] Specifically, first calculate the test error MSE of the two power sequences P and time-biased MSE T :

[0053] Then, according to the calculated detection error MSE P The upper limit of the calibration error MSE specified by the calibration platform PMAX In comparison, the calculated time deviation MSE T The upper limit of time deviation MSE specified by the verification platform TMAX In comparison, if and , then the charging equipment is qualified and the error of the charging order meets the standard.

[0054] In other embodiments, a stricter standard may also be adopted: when the cumulative verification error exceeds the verification error upper limit or the cumulative time error exceeds the time error upper limit, the charging device to be verified is determined to be qualified.

[0055] It can be seen from the above-mentioned embodiments that the remote calibration method for charging equipment provided in this embodiment can effectively determine the difference in the metering process of the two metering modules by accumulating the difference in the metering data sequence generated by the built-in metering module and the remote metering module of the charging equipment to be calibrated, and the data sequence difference will not be offset. Compared with directly comparing the metering results of the two metering modules, the situation where the metering process differences offset each other can be effectively avoided, thereby improving the accuracy of calibration and solving the problem of low calibration accuracy in the current remote calibration method for charging piles. At the same time, the remote calibration method for charging equipment provided in this embodiment does not rely on the metering results, so it can be compared at any time during the charging process based on the metering process data that has been generated, thereby achieving real-time calibration.

[0056] In this embodiment, a remote calibration device for a charging device is also provided, which is used to implement the above-mentioned embodiments and preferred implementation modes, and will not be repeated hereafter. The terms "module", "unit", "subunit", etc. used below can implement a combination of software and / or hardware for a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0057] Reference Figure 2 The remote calibration device of the charging equipment includes a data acquisition module, a remote calibration module and a calibration issuing module.

[0058] The data acquisition module is used to acquire a first power sequence and a second power sequence, wherein the first power sequence and the second power sequence are respectively acquired from a built-in metering module and a remote metering module of the charging device to be inspected.

[0059] The remote verification module is used to determine the cumulative verification error between the first power sequence and the second power sequence through an iterative assignment function. P loss and the accumulated time error T loss , the iterative assignment functions include:

[0060] in, and Respectively represent the first power sequence x The first sequence value and the second power sequence y sequence values, express and The distance between and Respectively and The measurement time,P loss and T loss The initial value of is 0. x and y The initial values ​​of are the total lengths of the first power sequence and the second power sequence. x and y Iteration reduction, when x and y When both are 1, the iteration assignment is completed.

[0061] The verification and issuing module is used to determine whether the charging device to be verified is qualified according to the accumulated verification error and the accumulated time error after the iterative assignment is completed.

[0062] In this embodiment, the charging device is a charging pile, and the data acquisition module, the remote verification module and the verification issuing module constitute a charging pile remote verification platform.

[0063] It should be noted that the above modules can be functional modules or program modules, and can be implemented by software or hardware. For modules implemented by hardware, the above modules can be located in the same processor; or the above modules can be located in different processors in any combination.

[0064] In this embodiment, an electronic device is also provided, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute the remote verification method of the charging device in this embodiment.

[0065] In this embodiment, a computer-readable storage medium is further provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the remote verification method of the charging device in this embodiment are implemented.

[0066] It should be understood that the specific embodiments described herein are only used to explain the application, rather than to limit it. Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of this application.

[0067] Obviously, the drawings are only some examples or embodiments of the present application. For ordinary technicians in the field, the present application can also be applied to other similar situations based on these drawings without creative work. In addition, it is understandable that although the work done in this development process may be complicated and lengthy, for ordinary technicians in the field, certain changes in design, manufacturing or production based on the technical content disclosed in this application are only conventional technical means and should not be regarded as insufficient content disclosed in this application.

Claims

1. A remote verification method for a charging device, characterized in that: include: Acquire a first power sequence and a second power sequence, wherein the first power sequence and the second power sequence are respectively acquired from a built-in metering module and a remote metering module of the charging device to be inspected; Determine the cumulative verification error between the first power sequence and the second power sequence by iterative assignment function P loss and the accumulated time error T loss , the iterative assignment functions include: ； in, and Respectively represent the first power sequence x The first sequence value and the second power sequence y sequence values, express and The distance between and Respectively and The measurement time, P loss and T loss The initial value of is 0. x and y The initial values ​​of are the lengths of the first power sequence and the second power sequence. x and y Iteration reduction, when x and y When all are 1, the iteration assignment is completed; Whether the charging device to be inspected is qualified is judged according to the accumulated inspection error and the accumulated time error after the iterative assignment is completed.

2. The remote verification method of the charging device according to claim 1, characterized in that: Acquiring the first power sequence and the second power sequence includes: Collecting a first current sequence, a first voltage sequence, and a third power sequence from the built-in metering module, and collecting a second current sequence, a second voltage sequence, and a fourth power sequence from the remote metering module; Performing zero removal processing on the third power sequence and the fourth power sequence, wherein the zero removal processing includes removing sequence values ​​equal to zero in the sequence; Determine sequence change turning points in the first current sequence and the first voltage sequence and sample corresponding sequence values ​​in the third power sequence to form a first power sequence; A sequence change turning point is determined in the second current sequence and the second voltage sequence, and corresponding sequence values ​​are sampled in the fourth power sequence to form a second power sequence.

3. The remote verification method of the charging device according to claim 2, characterized in that: The sequence change turning point is determined by an index value, and the index value is determined by an index function, and the index function is: ； Among them, Index represents the index set of sequence values ​​at the turning point of sequence change in sequence X. diff represents the difference function, sign represents the symbolic function, find Returns the index value of the vector that satisfies the condition.

4. The remote verification method of a charging device according to claim 1, characterized in that: The iterative assignment function also includes: like x =1, y>1, then x =1, y =y -1; like x >1、 y =1, then x =x -1. y =1; otherwise: ； Among them, E s Represents the unit vector E s Column vector, F represents the assignment matrix, find Indicates returning the vector subscript that meets the conditions. min represents the minimum function, U represents the distance matrix, express and The previous cumulative error distance, w represents the weight group.

5. The remote verification method of the charging device according to claim 4, characterized in that: Weight group w=【0.2,0.3,0.3】.

6. The remote verification method of a charging device according to claim 1, characterized in that: Judging whether the charging device to be inspected is qualified according to the accumulated inspection error and the accumulated time error after iterative assignment includes: When the cumulative verification error and the cumulative time error exceed the verification error upper limit and the time error upper limit respectively, the charging device to be verified is determined to be unqualified; Alternatively, when the accumulated verification error exceeds the verification error upper limit or the accumulated time error exceeds the time error upper limit, the charging device to be verified is determined to be qualified.

7. The remote verification method of a charging device according to claim 1, characterized in that: The charging equipment to be tested is a charging pile.

8. A remote calibration device for a charging device, characterized in that: include: A data acquisition module, used to acquire a first power sequence and a second power sequence, wherein the first power sequence and the second power sequence are respectively acquired from a built-in metering module and a remote metering module of the charging device to be inspected; A remote calibration module is used to determine the cumulative calibration error between the first power sequence and the second power sequence through an iterative assignment function P loss and the accumulated time error T loss , the iterative assignment functions include: ； in, and Respectively represent the first power sequence x The first sequence value and the second power sequence y sequence values, express and The distance between and Respectively and The measurement time, P loss and T loss The initial value of is 0. x and y The initial values ​​of are the total lengths of the first power sequence and the second power sequence. x and y Iteration reduction, when x and y When all are 1, the iteration assignment is completed; The verification and issuing module is used to determine whether the charging device to be verified is qualified according to the accumulated verification error and the accumulated time error after the iterative assignment is completed.

9. An electronic device, comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to run the computer program to execute the remote verification method for a charging device according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the remote verification method of a charging device according to any one of claims 1 to 7 are implemented.

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