Electric energy meter correction signal compensation method and system and storage medium

Abstract

The invention relates to the technical field of electric energy meter correction, in particular to an electric energy meter correction signal compensation method and system and a storage medium, and the method comprises the steps: regularly collecting working state data corresponding to a to-be-compensated electric meter, the working state data comprising type determination data and numerical value correction data; the working type of the to-be-compensated electric meter is judged according to the type determination data, a comparison data tool corresponding to the working type is screened out from a preset database, and the preset database stores a plurality of groups of comparison data tools corresponding to the working type; obtaining a standard correction value corresponding to the value correction data according to a comparison data tool; and taking the standard correction value as compensation data of the to-be-compensated ammeter, and correcting an actual correction value of the to-be-compensated ammeter according to the compensation data. According to the invention, the small signal error of the electric energy meter under various different conditions can be correct, so that the error of the electric energy meter can be reduced, and the applicability of the electric energy meter can be improved.

Description

Technical Field

[0001] This application relates to the technical field of electricity meter calibration, and particularly to a method and system for compensating calibration signals of an electricity meter and a storage medium. Background Art

[0002] In order to ensure that the measurement results of the electricity meter meet the specified accuracy requirements, the measured value of the electricity meter is compared with the standard value, and the parameters of the internal metering chip of the electricity meter are adjusted to compensate for the metering errors caused by reasons such as processing technology and power supply stability.

[0003] Currently, general metering chips only provide two power calibration registers, so the electricity meter generally calibrates one or two points. For example, for calibration point 1, a voltage of 220V can be applied to the three phases of the electricity meter, the three-phase current is Ib, that is, a current of 5A, and the power factor is set to 1.0L, and then the gain calibration register is calibrated; for calibration point 2, a voltage of 220V can be applied to the three phases of the electricity meter, and the three-phase current is increased by 10%Ib, that is, a current of 0.5A, and then the active offset calibration register is calibrated.

[0004] In actual applications, some three-phase electric meters are also required to be used as single-phase meters, and the error should reach the standard allowable range. Currently, for some three-phase electricity meters with a small volume and using a transformer scheme, the hardware design is relatively difficult, and there are easily problems such as a large induced current and interference between phases, resulting in a large error in the electricity meter when the signal is small, and even exceeding the standard allowable range. Summary of the Invention

[0005] In order to reduce the error of the electricity meter and improve the applicability of the electricity meter, this application provides a method and system for compensating calibration signals of an electricity meter and a storage medium.

[0006] In the first aspect, a method for compensating calibration signals of an electricity meter provided by this application adopts the following technical solution: A method for compensating calibration signals of an electricity meter includes the following steps: Regularly collect the working state data corresponding to the electricity meter to be compensated, where the working state data includes type determination data and numerical calibration data; Judge the working type of the electricity meter to be compensated according to the type determination data, and screen out the comparison data tool corresponding to the working type in a preset database, where the preset database stores several groups of comparison data tools corresponding to the working types; Obtain the standard calibration value corresponding to the numerical calibration data according to the comparison data tool; Use the standard calibration value as the compensation data for the electricity meter to be compensated, and correct the actual calibration value of the electricity meter to be compensated according to the compensation data.

[0007] By adopting the above technical solution, when the electricity meter is in the actual working state, according to the collected working state data, the compensation data corresponding to the electricity meter to be supplemented is obtained, and the supplementary data is used as the actual calibration value corresponding to the electricity meter to be compensated, so that the small-signal error of the electricity meter can be correct in various different situations, and then the error of the electricity meter can be reduced, and the applicability of the electricity meter can be improved.

[0008] In some of the embodiments, the working types include three-phase working and single-phase working. Determining the working type of the electricity meter to be compensated according to the type and determining the data includes the following steps: Obtaining the phase type corresponding to the electricity meter to be compensated and the phase voltage value corresponding to the phase type according to the type and determining the data; Successively comparing the phase voltage value with a preset voltage value to determine whether the phase voltage value is similar to the preset voltage value; If the phase voltage value is similar to the preset voltage value, then marking the phase type corresponding to the phase voltage value to obtain a marked value; Comparing the marked value with a first preset value to determine whether the marked value is the same as the first preset value; If the marked value is the same as the first preset value, then determining that the electricity meter to be compensated is the three-phase working; If the marked value is not the same as the first preset value, then determining that the electricity meter to be compensated is the single-phase working.

[0009] By adopting the above technical solution, a marked value is obtained based on the phase voltage value and the preset voltage value, and the marked value is compared with the first preset value, so as to determine the working type of the current electricity meter to be compensated, and a comparison data tool corresponding to different working types is called in a preset database, reducing the data comparison time and improving the efficiency of obtaining the actual calibration value of the electricity meter.

[0010] In some of the embodiments, screening out the comparison data tool corresponding to the working type in the preset database, wherein the generation method of the comparison data tool includes the following steps: Obtaining a plurality of groups of calibration points and the applied data corresponding to the calibration points; Applying the applied data to a standard test electricity meter and obtaining the calibration output value corresponding to the calibration point; Classifying according to the applied data to obtain a plurality of groups of working type sets, and the working type sets include a plurality of corresponding applied data and corresponding calibration output values; Generate the comparison data tool based on the applied data corresponding to the set of working types and the corrected output value, where the set of working types corresponds to the comparison data tool.

[0011] By adopting the above technical solution, apply the applied data to the standard test electric meter to obtain the corrected output value corresponding to the calibration point, so as to classify according to different working types to obtain different sets of working types, and each set of working types has a corresponding comparison data tool, which is convenient for obtaining the compensation data of the meter to be compensated and reduces the data comparison time.

[0012] In some of the embodiments, the generating the comparison data tool based on the applied data corresponding to the set of working types and the corrected output value includes the following steps: Process the applied data to obtain relevant values, and the relevant values are in one-to-one correspondence with the corrected output value; Perform a fitting process on the relevant values and the corrected output value to obtain the comparison data tool.

[0013] By adopting the above technical solution, process the data in each set of working types to obtain the corresponding comparison data tool, which is convenient for the meter to be compensated to obtain the corresponding compensation data, reduces the data comparison time, and improves the efficiency of obtaining the actual calibration value of the electric meter.

[0014] In some of the embodiments, the obtaining a plurality of sets of calibration points and the applied data corresponding to the calibration points includes the following steps: Obtain the rated calibration current corresponding to the meter to be calibrated and a set of preset factors, and randomly obtain a set of preset intervals, where the set of preset intervals includes a plurality of groups of preset intervals, and the set of preset factors includes a plurality of groups of preset factors; Generate a set of detection currents based on the preset intervals and the rated calibration current, where the set of detection currents includes a plurality of groups of detection currents; Randomly match the detection currents with the preset factors to generate a set of calibration points, where the set of calibration points includes a plurality of groups of calibration points; Use the detection currents and the matched preset factors as the applied data corresponding to the calibration points.

[0015] By adopting the above technical solution, generate a set of calibration points and the corresponding applied data based on the rated calibration current and the preset intervals, so as to be able to generate an accurate comparison data tool according to the obtained data, facilitate the accuracy of obtaining the compensation data of the meter to be compensated, and further be able to reduce the error of the electric meter and improve the applicability of the electric meter.

[0016] In some of these embodiments, generating the set of detection currents based on the preset interval and the rated calibration current includes the following steps: Successively use the preset interval and the updated rated calibration current as a temporary detection current, and determine whether the temporary detection current is less than a preset overcurrent; If the temporary detection current is less than the preset overcurrent, store the temporary detection current in the set of detection currents, and update the rated calibration current with the temporary detection current.

[0017] In some of these embodiments, before determining that the working state of the meter to be compensated is single-phase working, the following steps are further included: Determine whether the marked value is a second preset value; If the marked value is the second preset value, generate a meter detection signal, and detect the meter to be compensated based on the meter detection signal.

[0018] In some of these embodiments, before using the standard calibration value as the compensation data for the meter to be compensated, the following steps are further included: Obtain a corresponding current calibration value according to the meter to be compensated, where the current calibration value represents the value for calibration when the meter to be compensated leaves the factory; Compare the current calibration value with the standard calibration value, and determine whether the current calibration value is the same as the standard calibration value; If the current calibration value is the same as the standard calibration value, generate an end-of-calibration signal, and control the normal operation of the meter to be compensated based on the end-of-calibration signal.

[0019] In a second aspect, the present application provides an energy meter calibration signal compensation system, adopting the following technical solution: An energy meter calibration signal compensation system that executes the energy meter calibration signal compensation method described in the first aspect, includes: A data acquisition module, which is used to regularly acquire the working state data corresponding to the meter to be compensated, where the working state data includes type determination data and value calibration data; A curve acquisition module, which is used to determine the working type of the meter to be compensated according to the type determination data, and screen out the comparison data tool corresponding to the working type in a preset database; A data acquisition module, which is used to obtain the standard calibration value corresponding to the value calibration data according to the comparison data tool; A compensation data module, which is used to use the standard calibration value as the compensation data of the electricity meter to be compensated, and correct the actual calibration value of the electricity meter to be compensated according to the compensation data.

[0020] In a third aspect, the present application provides an electronic device, adopting the following technical solution: An electronic device, which includes a processor and a memory that are coupled to each other, and a computer program that can run on the processor is stored on the memory; When the computer program is executed by the processor, it implements the electricity meter calibration signal compensation method described in the first aspect.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the electricity meter is in the actual working state, according to the collected working state data, the compensation data corresponding to the electricity meter to be supplemented is obtained, and the supplementary data is used as the actual calibration value corresponding to the electricity meter to be compensated, so that the small signal errors of the electricity meter in various different situations can be corrected correctly, thereby reducing the error of the electricity meter and improving the applicability of the electricity meter; 2. Based on the phase voltage value and the preset voltage value, a marked value is obtained, and the marked value is compared with the first preset value, so as to judge the working type of the current electricity meter to be compensated, and the comparison data tools corresponding to different working types are called in the preset database, reducing the data comparison time and improving the efficiency of obtaining the actual calibration value of the electricity meter. Description of the Drawings

[0022] Figure 1 is a block diagram of the electricity meter calibration signal compensation method provided by the embodiment of the present application; Figure 2 is a block diagram of the working type acquisition method provided by the embodiment of the present application; Figure 3 is a block diagram of the acquisition method of the comparison data tool provided by the embodiment of the present application; Figure 4 is a block diagram of the acquisition method of the calibration point and the applied data provided by the embodiment of the present application; Figure 5 is a schematic structural diagram of the electricity meter calibration signal compensation system provided by the embodiment of the present application; Figure 6 is a block diagram of the electronic device structure provided by this embodiment.

[0023] Description of the reference numerals: 10, data acquisition module; 20, curve acquisition module; 30, data acquisition module; 40, compensation data module; 51, processor; 52, memory; 53, computer program. Detailed Embodiment

[0024] To more clearly understand the purpose, technical solution, and advantages of the present application, the present application will be described and explained below in conjunction with the accompanying drawings and embodiments. However, those of ordinary skill in the art should understand that the present application can be implemented without these details. In some cases, to avoid unnecessary description from obscuring various aspects of the present application, well-known methods, processes, systems, components, and / or circuits that have been described at a higher level will not be elaborated further. For those of ordinary skill in the art, it is obvious that various changes can be made to the disclosed embodiments of the present application, and without departing from the principles and scope of the present application, the general principles defined in the present application can be applied to other embodiments and application scenarios. Therefore, the present application is not limited to the illustrated embodiments, but conforms to the broadest scope consistent with the scope claimed in the present application.

[0025] An embodiment of the present application discloses a method for compensating an electric energy meter correction signal, which is applied to an electronic device for compensating an electric energy meter correction signal. The electronic device includes a processor and a memory that are coupled to each other, and a computer program capable of running on the processor is stored on the memory. When the computer program is executed by the processor, the method for compensating an electric energy meter correction signal is implemented.

[0026] As Figure 1 shown, the method for compensating an electric energy meter correction signal includes the following steps: S100, regularly collect the working state data corresponding to the meter to be compensated.

[0027] Among them, the meter to be compensated represents the meter in the working state after calibration, and the working state data represents the specific data of the meter to be compensated in the normal working state. The working state data includes type determination data and numerical correction data. The type determination data is used to determine the working type of the meter to be compensated, and the type determination data includes the A-phase voltage value, the B-phase voltage value, and the C-phase voltage value. The numerical correction data is used to obtain the data that the meter to be compensated needs to be compensated, and the numerical correction data includes the current value of the meter to be compensated and the power factor, etc.

[0028] It should be noted here that since the meter to be compensated is a three-phase meter, but in actual use, voltages are not applied simultaneously. Therefore, it is necessary to collect the voltage values of the three phases of the meter to be compensated separately.

[0029] It should be noted here that the processor regularly collects the working state data corresponding to the meter to be compensated. This period is set in advance, for example, it can be set to 0.5 seconds or 0.9 seconds for collection, but it is not limited to this. This regular time limit is generally within one second.

[0030] It should be noted here that when the electricity meter is in a normal working state, it does not change the current working type all the time. Therefore, the processor regularly obtains the working state data, and after each power-on of the electricity meter to be supplemented, multiple detections can be carried out. Specifically, when the electricity meter is in the working state, it will regularly read the current working state data of the electricity meter.

[0031] S200, determine the working type of the electricity meter to be compensated based on the type determination data, and screen out the comparison data tool corresponding to the working type in the preset database.

[0032] Among them, the working types include three-phase working and single-phase working. The preset database stores several groups of comparison data tools corresponding to the working types. The processor determines the working type of the electricity meter to be compensated based on the type determination data collected.

[0033] Combined Figure 2 , specifically determine the working type of the electricity meter to be compensated based on the type determination data, including the following steps: S210, obtain the phase type corresponding to the electricity meter to be compensated and the phase voltage value corresponding to the phase type according to the type determination data.

[0034] S220, compare the phase voltage value with the preset voltage value in turn to determine whether the phase voltage value is similar to the preset voltage value.

[0035] S230, if the phase voltage value is similar to the preset voltage value, mark the phase type corresponding to the phase voltage value to obtain the marked value.

[0036] S240, compare the marked value with the first preset value to determine whether the marked value is the same as the first preset value.

[0037] S250, if the marked value is the same as the first preset value, it is determined that the electricity meter to be compensated is in three-phase working.

[0038] S260, if the marked value is not the same as the first preset value, it is determined that the electricity meter to be compensated is in single-phase working.

[0039] Among them, the phase types include three types: phase A, phase B, and phase C of the electricity meter to be compensated, and the phase voltage values are the phase A voltage value, the phase B voltage value, and the phase C voltage value. The preset voltage value is the voltage set in advance, that is, the voltage value when the electricity meter is working normally. Generally, the preset voltage value is set to 220V. It should be noted here that due to some situations, the electricity meter works under high voltage or low voltage, and the preset voltage value can be set to other types of voltage values.

[0040] The processor determines the phase type corresponding to the data acquisition to-be-compensated electric meter and the phase voltage value corresponding to the phase type according to the type, and sequentially compares the phase voltage value of the phase type with the preset voltage value. When the phase voltage value is similar to the preset voltage value, it indicates that the current phase is working. Therefore, the phase type corresponding to the phase voltage value is marked to obtain a marked value. The marking mentioned here can specifically be a digital cumulative marking, and the marked value can be determined according to the number of phases in which the to-be-compensated electric meter is working.

[0041] It should be noted here that there will be a certain deviation in the actually measured phase voltage value. When the phase voltage value is 220.05V or 219.95V and the preset voltage value is set to 220V, as long as the difference between the phase voltage value and the preset voltage value meets the preset deviation, it is determined that the phase voltage value is similar to the preset voltage value. The preset deviation can be set to 1V, but it is not limited to this.

[0042] Exemplarily, the processor obtains 220V of the phase A voltage value, compares the phase A voltage value with the preset voltage value, and determines that the phase A voltage value is similar to the preset voltage value, then the marked value obtained is 1. Then, it obtains 220V of the phase B voltage value, compares the phase B voltage value with the preset voltage value, and determines that the phase B voltage value is similar to the preset voltage value, then the marked value obtained is 2. Then, it obtains 220V of the phase C voltage value, compares the phase C voltage value with the preset voltage value, and determines that the phase C voltage value is similar to the preset voltage value, then the marked value obtained is 3. Finally, the marked value corresponding to the to-be-compensated electric meter is 3.

[0043] Exemplarily, the processor obtains 220V of the phase A voltage value, compares the phase A voltage value with the preset voltage value, and determines that the phase A voltage value is similar to the preset voltage value, then the marked value obtained is 1. Then, it obtains 0V of the phase B voltage value, compares the phase B voltage value with the preset voltage value, and determines that the phase B voltage value is not similar to the preset voltage value, then the marked value obtained is 1. Then, it obtains 0V of the phase C voltage value, compares the phase C voltage value with the preset voltage value, and determines that the phase C voltage value is not similar to the preset voltage value, then the marked value obtained is 1. Finally, the marked value corresponding to the to-be-compensated electric meter is 1.

[0044] The first preset value described in step S240 is set to 3, indicating that the to-be-compensated electric meter is in a state where all three phases are working. If the marked value is the same as the first preset value, it is determined that the to-be-compensated electric meter is working in three phases. If the marked value is different from the first preset value, it is determined that the to-be-compensated electric meter is working in a single phase.

[0045] It should be noted here that as mentioned in step S260, if the marked value is different from the first preset value, it indicates that the electricity meter to be compensated is in single-phase operation or in a damaged state. Therefore, at this time, the processor specifically analyzes according to the specific value of the current marked value.

[0046] Specifically, when the marked value is 1, the processor determines that the electricity meter to be compensated is in single-phase operation. When the marked value is 2 or 0, it is determined that the current electricity meter to be compensated is abnormal and needs to be detected. Therefore, the processor generates a detection signal to remind the staff to check the energized electricity meter to be compensated to see if there are any operation errors or meter damage.

[0047] It should be noted here that assuming that the A-phase voltage value, B-phase voltage value, and C-phase voltage value obtained by the processor are not 220V, and the preset voltage value is 220V. At this time, through comparison, the marked value is 0, but the processor needs to generate a detection signal to remind the staff to check the energized electricity meter to be compensated to see if there are any operation errors or meter damage.

[0048] The tool for screening out the comparison data corresponding to the work type described in step S200 in the preset database. The preset database stores several groups of tools for comparison data corresponding to the work type. These comparison data tools are all generated and stored in the preset database in advance, facilitating the processor to obtain the tool for comparison data corresponding to the work type in the preset database.

[0049] It should be noted here that in order to reduce the data screening duration, the preset database is distinguished according to different work types. Different work types all correspond to comparison data tools. As long as the corresponding work type is determined through the type to obtain the data, the corresponding comparison data tool is screened out in the preset database according to the work type. S300, obtain the standard correction value corresponding to the numerical correction data according to the comparison data tool.

[0050] Among them, the standard correction value is the standard value obtained according to the numerical correction data during calibration. This standard correction value is specifically the value obtained by applying the numerical correction data to the standard test electricity meter.

[0051] It should be noted here that the comparison data tool includes a comparison data curve, a comparison data set, and a comparison data formula.

[0052] S400, use the standard correction value as the compensation data for the electricity meter to be compensated, and correct the actual correction value of the electricity meter to be compensated according to the compensation data.

[0053] Among them, the compensation data represents the values of the internal parameters that the electricity meter to be compensated needs to adjust. By replacing the corresponding parameters inside the electricity meter to be compensated with the standard calibration values, the electricity meter to be compensated can be made more accurate when measuring the electricity consumption, and the influence between phases can be reduced. Specifically, the compensation data replaces the register values in the electricity meter to be compensated, thereby adjusting the output electricity consumption value of the electricity meter to be compensated.

[0054] It should be noted here that since the electricity meter to be compensated has three-phase operation and single-phase operation, therefore, for different working types of the electricity meter to be compensated, the compensation data is also different.

[0055] Specifically, when the electricity meter to be compensated is in three-phase operation, the compensation data includes gain data and active power data. The gain data is the data for modifying the gain calibration register inside the electricity meter to be compensated, and the active power data is the data for modifying the active power offset calibration register.

[0056] When the electricity meter to be compensated is in single-phase operation, the compensation data includes the pulse threshold value. The pulse threshold value is the output duration of the electricity meter pulse. Since electric energy is the accumulation of power over a certain period, similarly, the electricity meter also accumulates the collected power values at very small time intervals (such as 100 us). When the accumulated value exceeds a threshold value, the electricity meter outputs a pulse, and the electric energy is accumulated by one over the electricity meter constant. For example, when the electricity meter constant is 1000 imp / kwh, one pulse represents 0.001 kwh of electricity.

[0057] The pulse threshold value can be calibrated under various different operating conditions of the electricity meter. After calibration, when the electricity meter acquires the voltage and current data through the current electricity meter, and then determines which operating condition it is currently in, and then uses the corresponding pulse threshold value, so that the small-signal error of the electricity meter can be correct under various different operating conditions. Furthermore, the problem of excessive small-signal error currently existing can be solved.

[0058] It should be noted here that for obtaining the actual calibration value, after the electricity meter to be compensated is powered on, if the processor continuously acquires similar working state data, the actual calibration value will no longer be processed until the processor acquires a change in the working state data. The processor continuously acquiring similar working state data specifically means continuously acquiring similar working state data for a preset number of times. The preset number of times can be set to 10 times, but is not limited to this. Refer to Figure 3 , in one of the embodiments, a comparison data tool corresponding to the working type is screened out in the preset database. Among them, the generation method of the comparison data tool includes the following steps: S500, obtain a number of calibration points and the applied data corresponding to the calibration points.

[0059] S600, apply the applied data to the standard test electricity meter and obtain the calibration output value corresponding to the calibration point.

[0060] S700 classifies according to the applied data to obtain several sets of working type collections.

[0061] S800 generates a comparison data tool based on the applied data corresponding to the working type collection and the calibration output value.

[0062] Among them, the calibration point represents the point that needs to be detected when calibrating and detecting the electric meter, and the applied data represents the data corresponding to each calibration point. The standard test electric meter represents the reference electric meter used for electric meter detection, and the value output by this electric meter is standard. The calibration output value represents the standard value corresponding to each calibration point. The working type collection includes several corresponding applied data and corresponding calibration output values, and the working type collection corresponds to the comparison data tool.

[0063] In one of the embodiments, generating a comparison data tool based on the applied data corresponding to the working type collection and the calibration output value includes the following steps: S810 processes the applied data to obtain relevant values.

[0064] S820 performs fitting processing on the relevant values and the calibration output value to obtain a comparison data tool.

[0065] Among them, the relevant value represents processing the applied data to obtain a value related to the applied data, and the relevant value and the calibration output value are in one-to-one correspondence. Since the applied data includes the detected voltage, detected current, and power factor, in order to facilitate the generation of the comparison data curve, the detected voltage, detected current, and power factor can be processed to generate relevant values, and the relevant values and the calibration output value are subjected to fitting processing to obtain the comparison data curve.

[0066] It should be noted here that for the specific method of obtaining the relevant value, the applied data is weighted according to its influence ratio to obtain the corresponding value, and the applied data is summed according to its corresponding weight to obtain the corresponding relevant value. The specific calculation formula is as follows: F = Among them, F is the relevant value, i represents the applied data, represents the weight of the i-th applied data, represents the i-th applied data.

[0067] Exemplarily, the applied data in the present application includes a detection voltage, a detection current, and a power factor. Since the detection voltages are mostly the same, and the power factors include 1.0L and 0.5L, the weight of the detection voltage can be set to 0.1, the weight of the power factor can be set to 0.3, and the weight of the detection current can be set to 0.6. The corresponding detection voltage is set to 220V, the detection current is set to 0.5A, and the power factor is set to 1.0L. Therefore, the corresponding F = 22.6.

[0068] Perform data fitting on the relevant values corresponding to each set of applied data and the calibration output value, so as to obtain the corresponding comparison data curve. The comparison data curve here includes the smoothest curve with the most relevant values and calibration output values. Count the relevant values and calibration output values included in the comparison data curve. If half of the relevant values and calibration output values are outside the comparison data curve, at this time, in order to ensure that the comparison values of the relevant values and calibration output values can be stored to obtain a comparison value set, and store the comparison value set in a preset database as the comparison data tool in step S200.

[0069] In addition, for the convenience of calculation, directly perform polynomial fitting on multiple sets of applied data and calibration output values. The specific fitting tool can use BATLAB to generate a polynomial function, and store the polynomial function in a preset database as the comparison data formula in step S200, which is convenient for the screening in step S200 to obtain the standard calibration value corresponding to the numerical calibration data.

[0070] Refer to Figure 4 , in one of the embodiments, obtaining a plurality of calibration points and the applied data corresponding to the calibration points includes the following steps: S510, obtain the rated calibration current corresponding to the meter to be calibrated and a preset factor set, and randomly obtain a preset interval set.

[0071] S520, generate a detection current set according to the preset interval and the rated calibration current.

[0072] S530, randomly match the detection current with the preset factors to generate a calibration point set.

[0073] S540, use the detection current and the matched preset factors as the applied data corresponding to the calibration points.

[0074] Wherein, the meter to be calibrated represents the meter that needs to be calibrated, the rated calibration current represents the rated current corresponding to the meter to be calibrated, the rated calibration current is marked with Ib, the preset interval set includes a plurality of groups of preset intervals, the preset factor set includes a plurality of groups of preset factors, the detection current set includes a plurality of groups of detection currents, and the calibration point set includes a plurality of groups of calibration points.

[0075] In this embodiment, the preset factor set includes 1.0L and 0.5L. The preset factor is specifically the power factor. When the power factor is 1.0L, it indicates that the pure resistive load is applied by the ammeter. When the power factor is 0.5L, it indicates that the inductive or capacitive load is applied by the ammeter. The accuracy of the ammeter to be calibrated under pure active power is tested, and the accuracy of the ammeter to be calibrated under reactive power conditions is tested. The preset interval set includes 2%, 5%, 10%, 20%, etc., which is specifically set according to the actual situation. The detected currents in the detected current set are arranged in ascending order, and the preset interval is the interval between two adjacent detected currents. For example, two adjacent detected currents are 2%Ib and 4%Ib respectively, that is, the interval between two adjacent detected currents is 2%Ib.

[0076] The generation of the detected current set according to the preset interval and the rated calibration current mentioned in step S520 specifically includes the following steps: S521, sequentially use the preset interval and the rated calibration current as the temporary detected current, and generate the comparison detected current according to the temporary detected current and the updated preset detected current.

[0077] S522, determine whether the comparison detected current is less than the preset overcurrent.

[0078] S523, if the comparison detected current is less than the preset overcurrent, store the comparison detected current in the detected current set, and update the preset detected current with the comparison detected current.

[0079] Among them, the initial preset detected current is set to 0, and the comparison detected current is generated according to the sum of the temporary detected current and the updated preset detected current. The preset overcurrent is the current when the ammeter is overloaded, that is, the preset overcurrent is 120%Ib. First, obtain the value 2% in the preset interval set, generate the temporary detected current 2%Ib with the rated calibration current, obtain the comparison detected current 2%Ib, determine that the comparison detected current is less than the preset overcurrent, then store the comparison detected current in the detected current set, and use the comparison detected current as the preset detected current, and repeat step S251 until the comparison detected current is greater than the preset overcurrent, end the loop, and generate the detected current set.

[0080] In step S530, the detected current is randomly matched with the preset factor to generate the calibration point set. Specifically, the detected current in the detected current set is sequentially obtained, and then the preset factor in the preset factor set is randomly matched until all the detected currents are matched with the corresponding preset factors.

[0081] Of course, the preset factor can also be randomly matched with the detected current, or first extract a preset factor as the preset factor corresponding to all the detected currents in the detected current set, and then extract another preset factor as the preset factor corresponding to all the detected currents.

[0082] The calibration points in the set of calibration points are arranged according to the magnitude of the detected current, and the applied data for each group are not exactly the same. It should be noted here that since the detected voltages are mostly the same, the applied data also includes the detected voltage.

[0083] In one of the embodiments, before determining that the working state of the meter to be compensated is single-phase operation, the following steps are further included: S261, Determine whether the marked value is a second preset value.

[0084] S262, If the marked value is the second preset value, generate a meter detection signal, and detect the meter to be compensated according to the meter detection signal.

[0085] Among them, the second preset value is set to 0 or 2. When the marked value is 2 or 0, it is determined that the current meter to be compensated is abnormal and needs to be detected. Therefore, the processor generates a meter detection signal to remind the staff to check the energized meter to be compensated for any operation errors or meter damage.

[0086] It should be noted here that assume that the A-phase voltage value, B-phase voltage value, and C-phase voltage value obtained by the processor are not 220V, and the preset voltage value is 220V. At this time, through comparison, the marked value is 0, but the processor needs to generate a meter detection signal to remind the staff to check the energized meter to be compensated for any operation errors or meter damage.

[0087] In one of the embodiments, before using the standard calibration value as the compensation data for the meter to be compensated, the following steps are further included: S410, Obtain the corresponding current calibration value according to the meter to be compensated.

[0088] S420, Compare the current calibration value with the standard calibration value, and determine whether the current calibration value is the same as the standard calibration value.

[0089] S430, If the current calibration value is the same as the standard calibration value, generate a calibration end signal, and control the normal operation of the meter to be compensated according to the calibration end signal.

[0090] Among them, the current calibration value represents the value calibrated when the meter to be compensated leaves the factory. For some calibrated meters, the current calibration value is the same as the standard calibration value. Therefore, there is no need to calibrate the meter to be compensated, and the processor can directly generate a calibration end signal and control the normal operation of the meter to be compensated according to the calibration end signal.

[0091] The implementation principle is: First, the processor periodically collects the working state data corresponding to the electricity meter to be compensated. Specifically, the processor determines the phase type corresponding to the electricity meter to be compensated and the phase voltage value corresponding to the phase type according to the type. The phase voltage value is compared with the preset voltage value in turn to determine whether the phase voltage value is similar to the preset voltage value. If the phase voltage value is similar to the preset voltage value, the phase type corresponding to the phase voltage value is marked to obtain the marked value. The marked value is compared with the first preset value to determine whether the marked value is the same as the first preset value. If the marked value is the same as the first preset value, it is determined that the electricity meter to be compensated is in three-phase operation. If the marked value is not the same as the first preset value, it is determined that the electricity meter to be compensated is in single-phase operation.

[0092] Next, the processor filters out the comparison data tool corresponding to the working type in the preset database, and obtains the standard correction value corresponding to the numerical correction data according to the comparison data tool.

[0093] Finally, the processor uses the standard correction value as the compensation data for the electricity meter to be compensated, and corrects the actual correction value of the electricity meter to be compensated according to the compensation data.

[0094] The embodiment of the present application also discloses an electricity meter correction signal compensation system.

[0095] As Figure 5 shown, the electricity meter correction signal compensation system includes a data acquisition module 10, a curve acquisition module 20 network-connected to the data acquisition module 10, a data acquisition module 30 network-connected to the curve acquisition module 20, and a compensation data module 40 network-connected to the data acquisition module 30.

[0096] Specifically, the data acquisition module 10 is used to periodically collect the working state data corresponding to the electricity meter to be compensated, and the working state data includes type determination data and numerical correction data. The curve acquisition module 20 is used to determine the working type of the electricity meter to be compensated according to the type determination data, and filter out the comparison data tool corresponding to the working type in the preset database. The data acquisition module 30 is used to obtain the standard correction value corresponding to the numerical correction data according to the comparison data tool. The compensation data module 40 is used to use the standard correction value as the compensation data for the electricity meter to be compensated, and correct the actual correction value of the electricity meter to be compensated according to the compensation data.

[0097] The other functions executed in the above data acquisition module 10, curve acquisition module 20, data acquisition module 30, and compensation data module 40, as well as the technical details of each function, are the same as or similar to the corresponding features in the electricity meter correction signal compensation method described above, so they will not be elaborated here.

[0098] The embodiment of the present application also discloses an electronic device.

[0099] Reference Figure 6 Figure 6 , the electronic device includes a processor 51 and a memory 52 that are coupled to each other, and a computer program 53 that can run on the processor 51 is stored on the memory 52. When the computer program 53 is executed by the processor 51, the electric energy meter calibration signal compensation method disclosed in the above embodiments is implemented.

[0100] The processor 51 may be a central processing unit, a general-purpose processor, a data signal processor, an application-specific integrated circuit, a field programmable gate array, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It is used to run the program code stored in the memory 52 or process data.

[0101] The memory 52 may be a ROM or other type of static storage device that can store static information and instructions, a random access memory, or other types of dynamic storage devices that can store information and instructions. It may also be an electrically erasable programmable read-only memory, a compact disc read-only memory, or other optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media, or other magnetic storage devices, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory 52 may be an internal storage unit in some embodiments.

[0102] The processor 51 and the memory 52 are connected by a bus. The bus may include a path for transmitting information between the above components. The bus may be a peripheral component interconnect standard bus or an extended industry standard architecture bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For the sake of representation, Figure 6 only a thick line is shown in, but it does not mean that there is only one bus or one type of bus.

[0103] Figure 6 Only the electronic device having the memory 52, the processor 51, and the bus is shown. Those skilled in the art can understand that, Figure 6 the structure shown does not constitute a limitation on the electronic device. It may be a bus-type structure or a star structure. The electronic device may further include more or fewer components than shown, or combine some components, or deploy different components. Other existing or future possible electronic devices are applicable and should also be included in the protection scope and are included herein by reference.

[0104] It should be understood that although the steps in the flowchart of the accompanying drawings are shown in sequence according to the indication of the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear indication in this article, the execution of these steps has no strict order limitation and may be executed in other orders.

[0105] The above are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A method for compensating a correction signal of an electric energy meter, characterized in that: The following steps are involved: Regularly collecting working status data corresponding to the electric meter to be compensated, wherein the working status data includes type determination data and value correction data; Determine the working type of the to-be-compensated electric meter according to the type determination data, and select a comparison data tool corresponding to the working type from a preset database, wherein the preset database stores several groups of comparison data tools corresponding to the working types; Obtaining a standard correction value corresponding to the numerical correction data according to the comparison data tool; The standard correction value is used as compensation data of the electric meter to be compensated, and the actual correction value of the electric meter to be compensated is corrected according to the compensation data.

2. The electric energy meter correction signal compensation method according to claim 1, characterized in that: The working type includes three-phase working and single-phase working. The working type of the to-be-compensated electric meter is determined based on the type determination data, including the following steps: Determine the data based on the type to obtain the phase type corresponding to the meter to be compensated and the phase voltage value corresponding to the phase type; Comparing the phase voltage value with the preset voltage value in sequence to determine whether the phase voltage value is similar to the preset voltage value; If the phase voltage value is similar to the preset voltage value, marking the phase type corresponding to the phase voltage value to obtain a marked value; Compare the mark value with a first preset value to determine whether the mark value is the same as the first preset value; If the mark value is the same as the first preset value, it is determined that the to-be-compensated electric meter is in three-phase operation; If the mark value is different from the first preset value, it is determined that the to-be-compensated electric meter is operating in the single-phase mode.

3. The electric energy meter correction signal compensation method according to claim 1, characterized in that: The method of selecting a comparison data tool corresponding to the work type from a preset database, wherein the method of generating the comparison data tool comprises the following steps: Acquire several groups of calibration points and application data corresponding to the calibration points; Applying the applied data to a standard test meter and obtaining a correction output value corresponding to the correction point; Classifying according to the applied data to obtain a plurality of groups of work type sets, wherein the work type sets include a plurality of corresponding applied data and corresponding correction output values; The comparison data tool is generated according to the applied data corresponding to the work type set and the correction output value, and the work type set corresponds to the comparison data tool.

4. The electric energy meter correction signal compensation method according to claim 3, characterized in that: The method of generating the comparison data tool according to the applied data corresponding to the work type set and the correction output value comprises the following steps: Processing the applied data to obtain a related value, wherein the related value corresponds to the corrected output value one by one; The correlation value and the correction output value are fitted to obtain the comparison data tool.

5. The electric energy meter correction signal compensation method according to claim 3, characterized in that: The step of obtaining a plurality of sets of calibration points and application data corresponding to the calibration points comprises the following steps: Acquire a rated correction current and a preset factor set corresponding to the electric meter to be calibrated, and randomly acquire a preset interval set, wherein the preset interval set includes a plurality of groups of preset intervals, and the preset factor set includes a plurality of groups of preset factors; generating a detection current set according to the preset interval and the rated correction current, wherein the detection current set includes a plurality of groups of detection currents; Randomly matching the detection current with a preset factor to generate a correction point set, wherein the correction point set includes a plurality of groups of correction points; The detection current and the matching preset factor are used as application data corresponding to the calibration point.

6. The electric energy meter correction signal compensation method according to claim 5, characterized in that: The step of generating a detection current set according to the preset interval and the rated correction current comprises the following steps: sequentially using the preset interval and the rated correction current as temporary detection currents, and generating a comparison detection current according to the temporary detection current and the updated preset detection current; Determining whether the compared detection current is less than a preset super current; If the compared detection current is less than the preset super current, the compared detection current is stored in the detection current set, and the preset detection current is updated by the compared detection current.

7. The electric energy meter correction signal compensation method according to claim 2, characterized in that: Before determining that the working state of the electric meter to be compensated is single-phase operation, the following steps are also included: Determining whether the mark value is a second preset value; If the mark value is the second preset value, an electric meter detection signal is generated, and the electric meter to be compensated is detected according to the electric meter detection signal.

8. The electric energy meter correction signal compensation method according to claim 1, characterized in that: Before using the standard correction value as compensation data of the electric meter to be compensated, the following steps are also included: According to the electric meter to be compensated, a corresponding current correction value is obtained, wherein the current correction value represents the value of the electric meter to be compensated calibrated when it leaves the factory; Comparing the current calibration value with the standard calibration value, and determining whether the current calibration value is the same as the standard calibration value; If the current correction value is the same as the standard correction value, a correction end signal is generated, and the ammeter to be compensated is controlled to operate normally according to the correction end signal.

9. An electric energy meter correction signal compensation system, characterized in that: A method for compensating an electric energy meter correction signal according to any one of claims 1 to 8, comprising: a data acquisition module (10), the data acquisition module (10) being used to periodically acquire working status data corresponding to the electric energy meter to be compensated, the working status data comprising type determination data and numerical correction data; a curve acquisition module (20), the curve acquisition module (20) being used to determine the working type of the electric energy meter to be compensated based on the type determination data, and to select a comparison data tool corresponding to the working type in a preset database; a data acquisition module (30), the data acquisition module (30) being used to acquire a standard correction value corresponding to the numerical correction data based on the comparison data tool; and a compensation data module (40), the compensation data module (40) being used to use the standard correction value as the compensation data of the electric energy meter to be compensated, and to correct the actual correction value of the electric energy meter to be compensated based on the compensation data.

10. An electronic device, characterized in that: The electronic device comprises a processor (51) and a memory (52) coupled to each other, wherein the memory (52) stores a computer program (53) that can be run on the processor (51); when the computer program (53) is executed by the processor (51), the electric energy meter correction signal compensation method according to any one of claims 1 to 8 is implemented.

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