Single-phase circuit anomaly identification method, identification system and storage medium of three-phase electric meter

Abstract

The application discloses a single-phase circuit abnormality identification method, an identification system and a storage medium of a three-phase electric meter. The identification method comprises the following steps: performing a calibration item to obtain a calibration parameter array of the calibration item; wherein the calibration item comprises three-phase independent parameters that need to be calibrated; determining a deviated phase and a deviation degree according to a preset abnormal phase deviation degree algorithm; and performing abnormality identification on the electric meter according to the deviated phase and the deviation degree. Therefore, the circuit device abnormality of the sensing chain of the three-phase electric meter can be found in time, and the three-phase electric meter can meet the requirements of measurement accuracy in the whole measurement domain.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile safe driving, and in particular to a single-phase circuit abnormality identification method for a three-phase electric meter, an identification system and a storage medium. BACKGROUND

[0002] An electric energy meter is an indispensable module in the current power system. The calibration involved in the production process of the electric energy meter has always been an important topic. The electric energy meter generally has a certain error. The main reason for the error is that the parameters of the devices in the electric energy meter are slightly different. However, the devices of the electric energy meter have relatively strict precision and tolerance requirements. Therefore, the measurement calibration parameters of the three-phase electric meter are relatively close. If a device of one phase is abnormal, the electric meter may be normal in some measurement intervals after calibration, but it cannot meet the measurement precision requirements in the full measurement domain.

[0003] At present, most of the electronic three-phase electric meters on the market do not have detection and alarm for single-phase circuit abnormality (the single-phase circuit abnormality refers to that in a three-phase measurement system, if any one item has a problem such as a device parameter that does not meet the standard, resulting in abnormal measurement of one phase compared with the other two phases). If the electric meter design or wiring has a single-phase circuit abnormality, the electric meter may be normal in some measurement intervals, but it cannot meet the measurement precision requirements in the full measurement domain. SUMMARY

[0004] Embodiments of the present application aim to provide a single-phase circuit abnormality identification method for a three-phase electric meter, an identification system and a storage medium, which can solve the problem that the existing three-phase electric meter cannot meet the measurement precision requirements in the full measurement domain due to the inability to detect single-phase circuit abnormality.

[0005] To solve the above technical problems, a first aspect of the present application provides a single-phase circuit abnormality identification method for a three-phase electric meter, which comprises:

[0006] performing a calibration item to obtain a calibration parameter array of the calibration item;

[0007] determining a deviated phase and a deviation degree according to a preset abnormal phase deviation degree algorithm based on the calibration parameter array;

[0008] performing abnormality identification on the electric meter according to the deviated phase and the deviation degree.

[0009] Optionally, before the step of performing a calibration item to obtain a calibration parameter array of the calibration item, the identification method further comprises: dividing the meter calibration into a plurality of calibration items, and each calibration item includes three-phase independent parameters that need to be calibrated.

[0010] Optionally, the step of dividing the calibration table into calibration items comprises: dividing the calibration items of the calibration table into voltage calibration items, current calibration items, phase calibration items and zero offset calibration items.

[0011] Optionally, the preset abnormal phase deviation degree algorithm comprises:

[0012] calculating a first average value of all elements in the three-phase array;

[0013] calculating absolute values of differences between each element in the three-phase array and the first average value;

[0014] determining that the phase corresponding to the element corresponding to the maximum absolute value of the difference is the phase with the maximum deviation degree;

[0015] calculating a second average value of the other two elements in the three-phase array except the element corresponding to the maximum absolute value of the difference;

[0016] calculating an abnormal phase deviation degree of the other two elements in the three-phase array except the element corresponding to the maximum absolute value of the difference using a preset formula.

[0017] Optionally, the preset formula is:

[0018]

[0019] wherein Y is the abnormal phase deviation degree of the other two elements in the three-phase array except the element corresponding to the maximum absolute value of the difference, ax is one of the other two elements in the three-phase array except the element corresponding to the maximum absolute value of the difference, and P1 is the second average value.

[0020] Optionally, before the step of identifying the meter as abnormal according to the deviated phase and the deviation degree, the identification method further comprises: pre-storing a warning threshold and a fault threshold.

[0021] Optionally, the step of identifying the meter as abnormal according to the deviated phase and the deviation degree comprises: comparing the deviation degree with the pre-stored warning threshold and fault threshold respectively, and identifying the meter as abnormal according to the comparison result.

[0022] Optionally, the step of identifying the meter as abnormal according to the comparison result comprises:

[0023] if the comparison result is that the deviation degree is greater than or equal to the fault threshold, stopping calibration and reporting a fault, and feeding back fault information to the calibration table so that the calibration table records the abnormality;

[0024] if the comparison result is that the deviation degree is greater than or equal to the warning threshold, continuing calibration, and feeding back warning information to the calibration table so that the calibration table records the abnormality;

[0025] If the comparison result is that the deviation degree is less than the warning threshold, a normal calibration reply is fed back to the calibration bench.

[0026] Correspondingly, the second aspect of the present application provides a single-phase circuit abnormality identification system of a three-phase electric meter, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, and the computer program is used to execute the steps of the single-phase circuit abnormality identification method of the three-phase electric meter according to the first aspect of the present application.

[0027] Correspondingly, the third aspect of the present application provides a computer storage medium, and the computer storage medium stores a single-phase circuit abnormality identification method of a three-phase electric meter, and the single-phase circuit abnormality identification method of the three-phase electric meter is used to execute the steps of the single-phase circuit abnormality identification method of the three-phase electric meter according to the first aspect of the present application.

[0028] Compared with the prior art, the single-phase circuit abnormality identification method, identification system and storage medium of the three-phase electric meter provided by the embodiments of the present application can timely find the abnormality of the circuit device of the sensing chain of the three-phase electric meter, so that the three-phase electric meter can meet the requirements of measurement accuracy in the full measurement domain. Thus, the problem that the existing three-phase electric meter cannot meet the requirements of measurement accuracy in the full measurement domain due to the inability to detect the single-phase circuit abnormality can be solved. BRIEF DESCRIPTION OF DRAWINGS

[0029] One or more embodiments are illustrated by way of example in the accompanying drawings that are not intended to be limiting of the embodiments so that one of ordinary skill in the art will understand, without limiting the generality of this disclosure, that the with same reference numerals indicating like elements the drawings are not to scale.

[0030] Figure 1 is a flowchart of a single-phase circuit abnormality identification method of a three-phase electric meter provided by the present application;

[0031] Figure 2 is a flowchart of a single-phase circuit abnormality identification method of a three-phase electric meter provided by the present application applied to voltage abnormality identification;

[0032] Figure 3 is a flowchart of a single-phase circuit abnormality identification method of a three-phase electric meter provided by the present application applied to current abnormality identification;

[0033] Figure 4 is a single-phase circuit abnormality identification method of a three-phase electric meter provided by the present application, and a flowchart of phase abnormality identification is shown in the figure;

[0034] Figure 5 is a structural diagram of a single-phase circuit abnormality identification system of a three-phase electric meter provided by the present application. DETAILED DESCRIPTION

[0035] In order to facilitate the understanding of the present application, the present application will be described in more detail below in combination with the drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as being "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The terms "upper", "lower", "inner", "outer", "bottom", etc. used in the specification indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third", etc. are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0036] Unless otherwise defined, all technical and scientific terms used in the specification have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification includes any and all combinations of one or more related listed items.

[0037] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict between them.

[0038] In one embodiment, as shown in Figure 1 The present application provides a single-phase circuit abnormality identification method of a three-phase electric meter, which comprises the following steps:

[0039] S1, performing a calibration item to obtain a calibration parameter array of the calibration item; wherein the calibration item comprises a three-phase independent parameter that needs to be calibrated;

[0040] S2, determining a deviated phase and a deviation degree according to a preset abnormal phase deviation degree algorithm based on the calibration parameter array;

[0041] S3, performing abnormality identification on the electric meter according to the deviated phase and the deviated degree.

[0042] In the embodiment, by providing a single-phase circuit abnormality identification method of a three-phase electric meter, the identification method comprises performing a calibration item, and obtaining a calibration parameter array of the calibration item; wherein the calibration item comprises three-phase independent parameters that need to be calibrated; the calibration parameter array is determined according to a preset abnormal phase deviated degree algorithm to determine a deviated phase and a deviated degree; and the electric meter is identified according to the deviated phase and the deviated degree. Thus, the circuit device abnormality of the sensor chain of the three-phase electric meter can be found in time, so that the three-phase electric meter can meet the requirements of measurement accuracy in the full measurement domain. Thus, the problem that the existing three-phase electric meter cannot meet the requirements of measurement accuracy in the full measurement domain due to the inability to detect single-phase circuit abnormality can be solved.

[0043] In one embodiment, before the step S1, the identification method further comprises: dividing the meter calibration into several calibration items, and each calibration item comprises three-phase independent parameters that need to be calibrated; wherein the three-phase independent parameters comprise at least the following parameters: voltage, current, phase.

[0044] As an example, the calibration items of the meter calibration are divided into voltage calibration items, current calibration items, phase calibration items and zero offset calibration items, and each calibration item comprises three-phase independent parameters that need to be calibrated.

[0045] In one embodiment, in the step S2, the calibration parameter array is determined according to a preset abnormal phase deviated degree algorithm to determine a deviated phase and a deviated degree.

[0046] The purpose of the preset abnormal phase deviated degree algorithm is to find out a phase data with the largest deviation in a three-phase array and a deviated degree. Wherein the three-phase array is {a1, a2, a3}. The definition of the deviation is the sum of the distances of a point from the other points.

[0047] The preset abnormal phase deviated degree algorithm comprises:

[0048] 1. Calculate the first average value P of all elements in the three-phase array;

[0049] 2. Calculate the absolute value differences Δ1, Δ2, Δ3 of each element in the three-phase array and the first average value P;

[0050] 3. Determine that the phase corresponding to the element with the largest absolute value difference is the phase with the largest deviated degree Phmax;

[0051] 4. Calculate the second average value P1 of the other two elements in the three-phase array except the element with the largest absolute value difference;

[0052] 5. Calculate the abnormal phase deviation degree Y of the other two elements in the three-phase array except the element corresponding to the maximum difference value absolute value according to the following preset formula (1):

[0053]

[0054] Wherein, ax is one of the other two elements in the three-phase array {a1, a2, a3} except the element corresponding to the maximum difference value absolute value.

[0055] In the embodiment, the preset abnormal phase deviation degree algorithm is used to determine the deviated phase and the deviation degree according to the calibration parameter array, so that the circuit device abnormality of the sensor link of the three-phase electric meter can be found in time, and the three-phase electric meter can meet the requirements of measurement accuracy in the full measurement domain.

[0056] In one embodiment, before the step S3, the identification method further comprises: pre-storing a warning threshold and a failure threshold.

[0057] Optionally, the step of pre-storing the warning threshold and the failure threshold can be before the step S1, before the step S2, or between the step S1 and the step S2.

[0058] In the step S3, the abnormal identification of the electric meter according to the deviated phase and the deviation degree comprises:

[0059] Comparing the deviation degree with the pre-stored warning threshold and failure threshold respectively, and identifying the abnormality of the electric meter according to the comparison result; specifically comprising:

[0060] If the comparison result is that the deviation degree is greater than or equal to the failure threshold, stop calibration and report failure, and feed back the failure information to the calibration station, so that the calibration station records the abnormality and stops executing the calibration; at this time, the warning signal light will flash.

[0061] If the comparison result is that the deviation degree is greater than or equal to the warning threshold, continue calibration, and feed back the warning information to the calibration station, so that the calibration station records the abnormality;

[0062] If the comparison result is that the deviation degree is less than the warning threshold, feed back the normal calibration reply to the calibration station, and continue to execute other calibration items according to the above method.

[0063] In the embodiment, by comparing the deviation degree with the pre-stored warning threshold and fault threshold respectively, and stopping calibration and reporting fault when the deviation degree is greater than the fault threshold, and feeding back fault information to the calibration table, and feeding back warning information to the calibration table when the deviation degree is greater than the warning threshold, the circuit device abnormality of the sensing chain of the three-phase electric meter can be found in time and the warning prompt can be given, so that the three-phase electric meter can meet the requirements of measurement accuracy and the like in the whole measurement range.

[0064] In order to facilitate the understanding of the above inventive concept of the present application, the above inventive concept of the present application will be described in more detail below in combination with the drawings and specific embodiments.

[0065] As shown in Figure 2 The embodiment of the present application provides a single-phase circuit abnormality identification method of a three-phase electric meter, and specifically, the identification method is used for voltage abnormality identification of a single-phase circuit of a three-phase electric meter; the identification method comprises the following steps:

[0066] S401, the calibration table performs voltage calibration on the electric meter.

[0067] The calibration starts, and the upper computer of the calibration table sends a voltage calibration command to the lower computer to control the output module of the calibration source to output balancedly in three phases with a voltage V=220V.

[0068] S402, the electric meter maintains a calibration parameter array of the voltage calibration item, and the calibration parameter array stores corresponding parameters of this time of voltage calibration: Para_V[3] (voltage calibration parameter array).

[0069] In the embodiment, the electric meter completes three-phase voltage gain calibration according to the calibration command and the actual detected voltage, and writes the voltage calibration parameter into the calibration parameter array Para_V[3], which is Para_V[2700, 3000, 2900].

[0070] S403, the calibration parameter array is used to determine a deviated phase and a deviation degree according to a preset abnormal phase deviation degree algorithm.

[0071] In the embodiment, Para_V is substituted into the above preset abnormal phase deviation degree algorithm, and it is obtained that the abnormal phase is 1 and the deviation degree is 0.0847.

[0072] S404, the deviation degree is compared with the pre-stored warning threshold and fault threshold respectively, and abnormality identification of the electric meter is performed according to the comparison result, and single-phase circuit abnormality fault or warning of the electric meter is reported. Specifically, the steps comprise the following steps:

[0073] If the comparison result is that the deviation degree is greater than or equal to the fault threshold, the single-phase circuit abnormality of the electric meter is reported: stop calibration and report fault, feed back fault information to the calibration station, record abnormality by the calibration station, stop performing calibration, and alarm signal light flashes.

[0074] If the comparison result is that the deviation degree is greater than or equal to the warning threshold, the single-phase circuit abnormality of the electric meter is reported: feed back warning information to the calibration station, continue calibration, and record abnormality by the calibration station.

[0075] If the comparison result is that the deviation degree is less than the warning threshold, the electric meter feeds back a normal calibration reply to the calibration station, and continues to perform other calibration items according to the above method.

[0076] In the embodiment, the pre-stored warning threshold is 0.1, the fault threshold is 0.2, the deviation degree of the current calibration is calculated according to the preset abnormal phase deviation degree algorithm, and the deviation degree is 0.0847. The deviation degree is less than the warning threshold, and the electric meter feeds back a normal calibration reply to the calibration station.

[0077] As shown in Figure 3 The embodiment of the present application provides a single-phase circuit abnormality identification method of a three-phase electric meter, and specifically, the identification method is used for current abnormality identification of a single-phase circuit of a three-phase electric meter; the identification method comprises the following steps:

[0078] S501, the calibration station performs current calibration on the electric meter.

[0079] The calibration starts, and the upper computer of the calibration station sends a current calibration command to the lower computer to control the output module of the calibration source to output three-phase balanced current I=20A.

[0080] S502, the electric meter maintains a calibration parameter array of the current calibration item, and the calibration parameter array stores corresponding parameters of the current calibration: Para_I[3] (current calibration parameter array).

[0081] In the embodiment, the electric meter completes three-phase current gain calibration according to the calibration command and the actual detected current, and writes the current calibration parameters into the calibration parameter array Para_I[3], which is Para_I[2500, 3000, 2900].

[0082] S503, the calibration parameter array is determined according to a preset abnormal phase deviation degree algorithm to determine a deviation phase and a deviation degree.

[0083] In the embodiment, Para_I is substituted into the above-mentioned preset abnormal phase deviation degree algorithm, and the abnormal phase is 1 and the deviation degree is 0.1525.

[0084] S504, compare the deviation degree with the pre-stored warning threshold and fault threshold respectively, and perform abnormality identification on the electric meter according to the comparison result, and report the single-phase circuit abnormality fault or warning of the electric meter. Specifically, it comprises:

[0085] If the comparison result is that the deviation degree is greater than or equal to the fault threshold, the single-phase circuit abnormality fault of the electric meter is reported: stop calibration and report fault, and feed back the fault information to the calibration station, the calibration station records the abnormality, stops performing calibration, and the warning signal light flashes.

[0086] If the comparison result is that the deviation degree is greater than or equal to the warning threshold, the single-phase circuit abnormality warning of the electric meter is reported: feed back the warning information to the calibration station, continue calibration, and the calibration station records the abnormality.

[0087] If the comparison result is that the deviation degree is less than the warning threshold, the electric meter feeds back a normal calibration reply to the calibration station, and continues to perform other calibration items according to the above method.

[0088] In the embodiment, the pre-stored warning threshold is 0.1, the fault threshold is 0.2, the deviation degree of the present calibration is calculated according to the preset abnormal phase deviation degree algorithm and is 0.1525. The deviation degree is greater than the warning threshold and less than the fault threshold, so the electric meter judges that the abnormality is a warning, returns the warning information and related data to the calibration station, and the calibration station records the abnormality and related data.

[0089] As shown in Figure 4 The embodiment of the present application provides a single-phase circuit abnormality identification method of a three-phase electric meter, and specifically, the identification method is used for phase abnormality identification of a single-phase circuit of a three-phase electric meter; the identification method comprises:

[0090] S601, the calibration station performs phase calibration on the electric meter.

[0091] The calibration starts, and the upper computer of the calibration station sends a phase calibration command to the lower computer to control the output module of the calibration source to output in a balanced manner with a phase of 60°.

[0092] S602, the electric meter maintains a calibration parameter array of the phase calibration item, and the calibration parameter array stores corresponding parameters of the present phase calibration: Para_Phase[3] (phase calibration parameter array).

[0093] In the embodiment, the electric meter completes three-phase phase calibration according to the calibration command and the actual detected phase, and writes the phase calibration parameters into the calibration parameter array Para_Phase[3] as Para_Phase[3000, 2000, 2900].

[0094] S603, determining a deviated phase and a deviation degree of the calibration parameter array according to a preset abnormal phase deviation degree algorithm.

[0095] In the embodiment, the Para_Phase is substituted into the preset abnormal phase deviation degree algorithm, and it is obtained that the abnormal phase is 2 and the deviation degree is 0.3220.

[0096] S604, comparing the deviation degree with a pre-stored warning threshold and a fault threshold respectively, and performing abnormal identification on the electric meter according to a comparison result, and reporting an abnormal fault or a warning of a single-phase circuit of the electric meter. Specifically, the step S604 comprises:

[0097] If the comparison result is that the deviation degree is greater than or equal to the fault threshold, an abnormal fault of the single-phase circuit of the electric meter is reported: calibration is stopped and a fault is reported, and fault information is fed back to a calibration station, the calibration station records the abnormality, stops performing calibration, and an alarm signal light blinks.

[0098] If the comparison result is that the deviation degree is greater than or equal to the warning threshold, an abnormal warning of the single-phase circuit of the electric meter is reported: warning information is fed back to the calibration station, and calibration is continued, and the calibration station records the abnormality.

[0099] If the comparison result is that the deviation degree is less than the warning threshold, the electric meter feeds back a normal calibration reply to the calibration station, and continues to perform other calibration items according to the above method.

[0100] In the embodiment, the pre-stored warning threshold is 0.2, the fault threshold is 0.3, the deviation degree of the present calibration is calculated to be 0.3220 according to the preset abnormal phase deviation degree algorithm. The deviation degree is greater than the fault threshold, the electric meter judges that the abnormality is a fault, the electric meter reports the fault, stops calibration, and returns the fault information and related data to the calibration station, and the calibration station records the abnormality and the related data.

[0101] Based on the same concept, in one embodiment, as shown in Figure 5 The present application provides a single-phase circuit abnormality identification system of a three-phase electric meter, the identification system 900 comprises a memory 902, a processor 901, and one or more computer programs stored in the memory 902 and executable on the processor 901, the memory 902 and the processor 901 are coupled together through a bus system 903, and the one or more computer programs are executed by the processor 901 to implement the following steps of a single-phase circuit abnormality identification method of a three-phase electric meter provided by the embodiment of the present application:

[0102] S1, performing a calibration item to obtain a calibration parameter array of the calibration item; wherein the calibration item comprises three-phase independent parameters that need to be calibrated;

[0103] S2, determining a deviated phase and a deviated degree of the calibration parameter array according to a preset abnormality phase deviation degree algorithm;

[0104] S3, performing abnormality identification on the electric meter according to the deviated phase and the deviated degree.

[0105] The method disclosed by the embodiments of the present application can be applied to or implemented by the processor 901. The processor 901 can be an integrated circuit chip with a signal processing capability. In the implementation process, each step of the above method can be completed by an integrated logic circuit or an instruction in a software form in the processor 901. The processor 901 can be a general-purpose processor, a DSP, or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc. The processor 901 can implement or execute the disclosed methods, steps and logic block diagrams in the embodiments of the present application. The general-purpose processor can be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiments of the present application, the hardware decoding processor can be directly embodied to complete the execution, or the hardware and software modules in the decoding processor can be combined to complete the execution. The software module can be located in a storage medium, and the storage medium is located in the memory 902. The processor 901 reads the information in the memory 902 and combines the hardware to complete the steps of the above method.

[0106] It can be understood that the memory 902 of the embodiment of the present application can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable read-only memory (EEPROM), a ferromagnetic random access memory (FRAM), a flash memory or other memory technology, a compact disk read-only memory (CD-ROM), a digital versatile disk (DVD) or other optical disk storage, a magnetic cassette, a magnetic tape, a magnetic disk storage or other magnetic storage device; the volatile memory can be a random access memory (RAM), and many forms of RAM are available by way of example but not limitation, for example, static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), sync link dynamic random access memory (SLDRAM), direct rambus random access memory (DRRAM).The memory described in the embodiments of the present application is intended to include, but not limited to, these and any other suitable types of memory.

[0107] It should be noted that the above-mentioned recognition system embodiments and method embodiments belong to the same concept, the specific implementation process is detailed in the method embodiments, and the technical features in the method embodiments are all applicable in the recognition system embodiments, which will not be repeated here.

[0108] In addition, in the exemplary embodiments, the embodiments of the present application also provide a computer storage medium, specifically a computer readable storage medium, for example, including the memory 902 storing the computer program, one or more programs of a single-phase circuit abnormality identification method of a three-phase electric meter are stored on the computer storage medium, and the one or more programs of the single-phase circuit abnormality identification method of the three-phase electric meter are executed by the processor 901 to implement the following steps of the single-phase circuit abnormality identification method of the three-phase electric meter provided by the embodiments of the present application:

[0109] S1, performing a calibration item to obtain a calibration parameter array of the calibration item; wherein the calibration item includes three-phase independent parameters that need to be calibrated;

[0110] S2, determining a deviated phase and a deviation degree according to a preset abnormal phase deviation degree algorithm based on the calibration parameter array;

[0111] S3, performing abnormality identification on the electric meter according to the deviated phase and the deviation degree.

[0112] It should be noted that the above-mentioned computer readable storage medium and the single-phase circuit abnormality identification method of the three-phase electric meter belong to the same concept, the specific implementation process is detailed in the method embodiments, and the technical features in the method embodiments are all applicable in the above-mentioned computer readable storage medium, which will not be repeated here.

[0113] It should be noted that in this paper, the term "including", "containing" or any other variant thereof is intended to cover non-exclusive containing, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the sentence "including a…" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0114] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not limited to them; under the idea of the present application, the technical features of the above examples or different examples can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for simplicity; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for identifying single-phase circuit anomalies in a three-phase electricity meter, characterized in that, The identification method includes: Perform the calibration project to obtain the calibration parameter array for the calibration project; The calibration parameter array is used to determine the deviating phase and the degree of deviation according to a preset abnormal phase deviation algorithm. The preset abnormal phase deviation algorithm includes: calculating the first average value of all elements in the three-phase array; calculating the absolute value of the difference between each element in the three-phase array and the first average value; determining that the phase corresponding to the element with the largest absolute value of the difference is the phase with the largest degree of deviation; calculating the second average value of the other two elements in the three-phase array, excluding the element with the largest absolute value of the difference; and using a preset formula, calculating the degree of abnormal phase deviation of the other two elements in the three-phase array, excluding the element with the largest absolute value of the difference, based on one element of the other two elements in the three-phase array and the second average value. The meter is identified as abnormal based on the phase deviation and the degree of deviation.

2. The identification method according to claim 1, characterized in that, Before the step of performing the calibration item and obtaining the calibration parameter array of the calibration item, the identification method further includes: dividing the calibration meter into several calibration items, each calibration item including three independent parameters that need to be calibrated.

3. The identification method according to claim 2, characterized in that, The step of dividing the meter into several calibration items includes: dividing the meter calibration items into voltage calibration items, current calibration items, phase calibration items, and zero bias calibration items.

4. The identification method according to claim 1, characterized in that, The preset formula is: Where Y represents the degree of abnormal phase deviation of the two elements in the three-phase array other than the element corresponding to the element with the largest absolute value of the difference, ax represents one of the two elements in the three-phase array other than the element corresponding to the element with the largest absolute value of the difference, and P1 represents the second average value.

5. The identification method according to claim 1, characterized in that, Prior to the step of identifying anomalies in the meter based on the phase deviation and the degree of deviation, the identification method further includes: pre-storing warning thresholds and fault thresholds.

6. The identification method according to claim 5, characterized in that, The step of identifying anomalies in the electricity meter based on the deviation phase and the degree of deviation includes: comparing the degree of deviation with pre-stored warning thresholds and fault thresholds, and identifying anomalies in the electricity meter based on the comparison results.

7. The identification method according to claim 6, characterized in that, The step of identifying anomalies in the electricity meter based on the comparison results includes: If the comparison result shows a deviation greater than or equal to the fault threshold, then calibration is stopped and a fault is reported, and the fault information is fed back to the calibration station so that the calibration station can record the anomaly. If the comparison result shows a deviation greater than or equal to the warning threshold, calibration continues, and the alarm information is fed back to the calibration station so that the calibration station can record the anomaly. If the comparison result shows a deviation less than the warning threshold, a normal calibration response is sent to the calibration station.

8. A single-phase circuit anomaly identification system for a three-phase electricity meter, characterized in that, include: The memory, the processor, and the computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the steps of the single-phase circuit anomaly identification method for a three-phase meter as described in any one of claims 1 to 7.

9. A computer storage medium, characterized in that, The computer storage medium stores a program for a method of identifying single-phase circuit anomalies in a three-phase electricity meter. When the program for identifying single-phase circuit anomalies in a three-phase electricity meter is executed by a processor, it implements the steps of the method for identifying single-phase circuit anomalies in a three-phase electricity meter as described in any one of claims 1 to 7.

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