Electric energy meter testing method and system

Abstract

The invention discloses an electric energy meter testing method and system, relates to the field of testing, and aims to more accurately verify the reliability of an electric energy meter in consideration of relatively complex climatic environment, power grid environment and networking environment in a field environment. According to the scheme, the user response characteristic values, the climatic environment characteristic values, the power grid environment characteristic values and the networking environment characteristic values corresponding to the field environments are determined firstly, then whether the field environments corresponding to the characteristic values meet the electric energy meter testing standard or not is judged, and then the electric energy meter to be tested is installed in the field environments meeting the electric energy meter testing standard. And whether the operation reliability of the to-be-tested electric energy meter in a complex climatic environment, a power grid environment and a networking environment is poor or not is judged through the periodically collected characteristic data of the to-be-tested electric energy meter, so that the verification reliability of the to-be-tested electric energy meter is improved, and the risk of field operation of the to-be-tested electric energy meter is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the field of testing, and in particular to an electric energy meter testing method and system. Background Art

[0002] With the rapid development of science and technology, the demand for electricity in various industries is increasing, and the phenomenon of uneven electricity consumption at different times is becoming increasingly serious. In order to alleviate the increasingly acute contradiction between electricity supply and demand, adjust the load curve, and improve the phenomenon of uneven electricity consumption, electric energy meters are currently used in many industries to count electricity consumption. Therefore, it is increasingly important to test the electric energy meter before using it to count actual electricity consumption.

[0003] The existing electric energy meter test is to build a test environment in a laboratory environment, including power supply, character rack, real load and other equipment, simulate various virtual loads or connect to part of the real load, simulate some interference impacts and working conditions during the test, and simulate the test of typical power consumption environment, but the climate environment, power grid environment and networking environment in the laboratory environment are relatively simple, while the climate environment, power grid environment and networking environment of the electric energy meter used in the field are relatively complex, so there is a big difference between the laboratory environment and the field application, and most of the electric energy meters in the climate environment, power grid environment and networking environment cannot be simulated by the laboratory environment. In addition, the existing electric energy meter test method is to collect the power data of the electric energy meter to be tested in the laboratory environment, and make a judgment on the operating reliability of the electric energy meter to be tested based on the collected power data, but it is too simple to collect and make a judgment on the operating reliability of the electric energy meter to be tested based on the power data, which makes it impossible to accurately and comprehensively verify the reliability of the electric energy meter to be tested, which greatly increases the risk of the electric energy meter to be tested in the field. Summary of the invention

[0004] The purpose of the present invention is to provide an electric energy meter testing method and system. In this scheme, the electric energy meter to be tested is installed in a field environment that meets the electric energy meter testing standards, and the characteristic data of the electric energy meter to be tested that is periodically collected is used to determine whether the electric energy meter to be tested has a fault in a complex climate environment, power grid environment, and networking environment, so as to improve the reliability of the verification of the electric energy meter to be tested and greatly reduce the risk of the electric energy meter to be tested in the field operation.

[0005] In order to solve the above technical problems, the present invention provides an electric energy meter testing method, comprising:

[0006] Determine a user response characteristic value, a climate environment characteristic value, a power grid environment characteristic value, and a networking environment characteristic value corresponding to a number of on-site environments, wherein the user response characteristic value represents the user's cooperation, the climate environment characteristic value represents the weather resistance of the electric energy meter, the power grid environment characteristic value represents the anti-interference capability of the electric energy meter, and the networking environment characteristic value represents the communication capability of the electric energy meter;

[0007] Determine whether the corresponding on-site environment meets the electric energy meter test standard according to each of the user response characteristic values, each of the climate environment characteristic values, each of the power grid environment characteristic values ​​and each of the networking environment characteristic values;

[0008] If the corresponding field environment meets the electric energy meter test standard, several electric energy meters to be tested are installed in the field environment that meets the electric energy meter test standard, and characteristic data corresponding to each of the electric energy meters to be tested is periodically collected;

[0009] Based on each of the characteristic data, it is determined whether there is a problem with the operating reliability of the corresponding electric energy meter to be tested.

[0010] Optionally, determining user response characteristic values ​​corresponding to several on-site environments includes:

[0011] Obtain the permission value of the competent department corresponding to each of the site environments, the number of users who agree to implement the implementation, and the average cost of the users who agree to implement the implementation;

[0012] Determine the actual user willingness value corresponding to each of the on-site environments according to the number of users who agree to implement the implementation, the average cost value and the actual user willingness value determination formula;

[0013] The authorized value of the competent department and the actual user willingness value are used as the user response characteristic value corresponding to each of the on-site environments.

[0014] Optionally, determine the climate and environmental characteristic values ​​corresponding to several on-site environments, including:

[0015] Obtaining the number of a plurality of preset typical climate characteristics in each of the on-site environments and the typical climate characteristic proportion value corresponding to each of the preset typical climate characteristics;

[0016] The ratio of the sum of the proportions of the typical climate characteristics to the number of the preset typical climate characteristics is used as the climate environment characteristic value corresponding to each of the on-site environments.

[0017] Optionally, determining a plurality of grid environment characteristic values ​​and networking environment characteristic values ​​corresponding to the on-site environments, including:

[0018] Obtaining the number of grid power quality influencing factors, the number of grid power fluctuation influencing factors, the number of harmonic impact influencing factors, and the number of power interference influencing factors of each of the site environments;

[0019] The ratio of the sum of the number of the power supply fluctuation influence factors, the number of the harmonic impact influence factors and the number of the power supply interference influence factors to the number of the power supply quality influence factors of the power supply is taken as the power grid environment characteristic value;

[0020] Determine the number of networking modes that can be performed in each of the field environments and the number of electric energy meters that can be connected;

[0021] The networking environment characteristic value corresponding to each of the field environments is determined according to the number of possible networking modes, the number of connectable electric energy meters and a formula for determining the networking environment characteristic value.

[0022] Optionally, judging whether the corresponding on-site environment meets the electric energy meter test standard according to each of the user response characteristic values, each of the climate environment characteristic values, each of the power grid environment characteristic values, and each of the networking environment characteristic values ​​includes:

[0023] Determine the environmental impact factor corresponding to each of the on-site environments according to each of the climate environment characteristic values, each of the power grid environment characteristic values, each of the networking environment characteristic values ​​and the environmental impact factor determination formula;

[0024] Determine whether the permission value of the competent department corresponding to each of the on-site environments is not less than a first preset value, whether the actual user willingness value is not less than a second preset value, and whether the environmental impact factor is not less than a third preset value;

[0025] If the permitted value of the competent department corresponding to each of the on-site environments is not less than the first preset value, the actual user willingness value is not less than the second preset value, and the environmental impact factor is not less than the third preset value, then it is determined that the corresponding on-site environment meets the electric energy meter test standard;

[0026] If the permitted value of the competent department corresponding to each of the on-site environments is less than the first preset value, or the actual user willingness value is less than the second preset value, or the environmental impact factor is less than the third preset value, it is determined that the corresponding on-site environment does not meet the electric energy meter test standard.

[0027] Optionally, judging whether there is a problem with the operation reliability of the corresponding electric energy meter to be tested based on each of the characteristic data includes:

[0028] Determine the power data, operation data and clock data corresponding to each of the electric energy meters to be tested based on each of the characteristic data;

[0029] Determine the power increment accuracy, reverse flow measurement value, anti-flyaway measurement value, time-sharing power measurement value, and power deviation value between the power meter to be tested and the corresponding user master meter in the on-site environment according to each of the power data;

[0030] Based on the accuracy of each of the aforementioned power increase, each of the aforementioned reverse flow measurement values, each of the aforementioned anti-flyaway measurement values, each of the aforementioned time-sharing power measurement values, each of the aforementioned power deviation values, each of the aforementioned operating data and each of the aforementioned clock data, it is determined whether there is a problem with the operating reliability of the corresponding aforementioned electric energy meter to be tested.

[0031] Optionally, judging whether there is a problem with the operation reliability of the corresponding electric energy meter to be tested based on each of the clock data includes:

[0032] Determine the real time and clock battery voltage corresponding to each of the electric energy meters to be tested according to each of the clock data;

[0033] Determining a clock deviation between each of the real time and a corresponding standard time;

[0034] Determine whether the clock deviations corresponding to the electric energy meters to be tested are within a preset clock deviation range and whether the clock battery voltages corresponding to the electric energy meters to be tested are not less than a preset voltage threshold;

[0035] If the clock deviations corresponding to the electric energy meters to be tested are all within the preset clock deviation range and the clock battery voltages corresponding to the electric energy meters to be tested are not less than the preset voltage threshold, it is determined that there is no problem with the operating reliability of the electric energy meters to be tested;

[0036] If the corresponding clock deviation of each of the electric energy meters to be tested is not within the preset clock deviation range or the corresponding clock battery voltage of each of the electric energy meters to be tested is less than the preset voltage threshold, it is determined that there is a problem with the operating reliability of the corresponding electric energy meter to be tested.

[0037] Optionally, judging whether there is a problem with the operation reliability of the corresponding electric energy meter to be tested based on each of the operation data includes:

[0038] Determine the operating state parameters and liquid crystal display state of each of the electric energy meters to be tested according to each of the operating data;

[0039] Based on each of the operating status parameters, determine whether each of the corresponding electric energy meters to be tested has not experienced abnormal operation, and based on each of the liquid crystal display states, determine whether each of the electric energy meters to be tested has normal display;

[0040] If none of the electric energy meters to be tested has experienced abnormal operation and all of the electric energy meters to be tested display normally, it is determined that there is no problem with the operational reliability of all of the electric energy meters to be tested;

[0041] If any of the electric energy meters to be tested have experienced abnormal operation and any of the electric energy meters to be tested have abnormal display, it is determined whether the operation reliability of the corresponding electric energy meter to be tested has problems.

[0042] Optionally, also include:

[0043] Collecting the whole machine parameters before and after the test of each of the electric energy meters to be tested and the characteristic data of the user master meter corresponding to each of the electric energy meters to be tested in the field environment;

[0044] Correspondingly, judging whether there is a problem with the operation reliability of the corresponding electric energy meter to be tested based on each of the characteristic data includes:

[0045] Based on the whole machine parameters before each test, the whole machine parameters after each test, the characteristic data of each electric energy meter to be tested and the characteristic data of each user main meter, it is determined whether there is a problem with the operating reliability of the corresponding electric energy meter to be tested.

[0046] To solve the above technical problems, the present invention also provides an electric energy meter testing system, comprising: a plurality of normally closed switches, a plurality of electric energy meters to be tested, a plurality of normally open switches, a plurality of user master meters, and a processor;

[0047] The input end of each normally closed switch is connected to the power grid, the output end is connected to the input end of the corresponding electric energy meter to be tested, and the control end is connected to the output end of the processor;

[0048] The input end of each normally open switch is connected to the power grid, the output end is connected to the input end of the corresponding user master meter, and the control end is connected to the output end of the processor;

[0049] The output end of each of the electric energy meters to be tested is connected to the input end of the corresponding user main meter;

[0050] The output end of each user main meter is connected to the corresponding load;

[0051] The sampling end of the processor is respectively connected to the data output end of each electric energy meter to be detected and the data output end of each user main meter, and is used to control the opening and closing of each normally closed switch and each normally open switch.

[0052] The purpose of the present invention is to provide an electric energy meter testing method and system. Taking into account that the climate environment, power grid environment and networking environment in the field environment are relatively complex, the reliability of the electric energy meter can be verified more accurately. Therefore, this scheme first determines the user response characteristic values, climate environment characteristic values, power grid environment characteristic values ​​and networking environment characteristic values ​​corresponding to several field environments, and then determines whether the field environment corresponding to each characteristic value meets the electric energy meter testing standard. The electric energy meter to be tested is then installed in a field environment that meets the electric energy meter testing standard, and the characteristic data of the electric energy meter to be tested that is periodically collected is used to determine whether there is a problem with the operating reliability of the electric energy meter to be tested in the complex climate environment, power grid environment and networking environment, so as to improve the reliability of the verification of the electric energy meter to be tested and greatly reduce the risk of the electric energy meter to be tested in the field. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0054] Figure 1 A process flow chart of an electric energy meter testing method provided by the present invention;

[0055] Figure 2 A process flow chart of another electric energy meter testing method provided by the present invention;

[0056] Figure 3 An overall installation layout diagram of an electric energy meter to be tested provided by the present invention;

[0057] Figure 4 A schematic diagram of the installation of a single electric energy meter to be tested provided by the present invention;

[0058] Figure 5 An architectural diagram of an electric energy meter testing system provided by the present invention;

[0059] Figure 6 A schematic diagram of the functional modules of a Beta test system provided by the present invention;

[0060] Figure 7 A schematic diagram of data transmission of an electric energy meter provided by the present invention;

[0061] Figure 8 A process flow chart of another electric energy meter testing method provided by the present invention. DETAILED DESCRIPTION

[0062] The core of the present invention is to provide an electric energy meter testing method and system. This scheme installs the electric energy meter to be tested in a field environment that meets the electric energy meter testing standards, and determines whether the electric energy meter to be tested has a fault in a complex climate environment, power grid environment, and networking environment through periodically collected characteristic data of the electric energy meter to be tested, so as to improve the reliability of the verification of the electric energy meter to be tested and greatly reduce the risk of the electric energy meter to be tested in the field operation.

[0063] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0064] Please refer to Figure 1 , Figure 1 A process flow chart of an electric energy meter testing method provided by the present invention. The electric energy meter testing method comprises:

[0065] S11: Determine a user response characteristic value, a climate environment characteristic value, a power grid environment characteristic value, and a networking environment characteristic value corresponding to a number of on-site environments, wherein the user response characteristic value represents the user's cooperation, the climate environment characteristic value represents the weather resistance of the electric energy meter, the power grid environment characteristic value represents the anti-interference capability of the electric energy meter, and the networking environment characteristic value represents the communication capability of the electric energy meter;

[0066] S12: judging whether the corresponding on-site environment meets the electric energy meter test standard according to each user response characteristic value, each climate environment characteristic value, each power grid environment characteristic value and each networking environment characteristic value;

[0067] S13: If the corresponding field environment meets the electric energy meter test standard, a plurality of electric energy meters to be tested are installed in the field environment meeting the electric energy meter test standard, and characteristic data corresponding to each electric energy meter to be tested is periodically collected;

[0068] S14: judging whether there is a problem with the operation reliability of the corresponding electric energy meter to be tested based on each characteristic data.

[0069] In the present invention, considering that the climate environment, power grid environment and networking environment in the laboratory environment are relatively simple, while the climate environment, power grid environment and networking environment of the electric energy meter used in the field are relatively complex, the difference between the laboratory environment and the field application is large, and the electric energy meters in most climate environments, power grid environments and networking environments cannot be simulated through the laboratory environment, resulting in the inability to accurately verify the reliability of the electric energy meter to be tested, which greatly increases the risk of the electric energy meter to be tested in the field. Therefore, this scheme defines the test environment of the electric energy meter to be tested as the field environment, and in order to ensure that the electric energy meter to be tested can be stably tested in the field environment, it is necessary to ensure that the field environment meets the electric energy meter test standards. Therefore, this scheme first determines the user response characteristic values, climate environment characteristic values, power grid environment characteristic values ​​and networking environment characteristic values ​​corresponding to several field environments, because the user response characteristic value represents the user's cooperation, and the climate environment characteristic value represents the electric energy meter. The weather resistance of the energy meter and the grid environment characteristic values ​​characterize the anti-interference ability of the energy meter, and the networking environment characteristic values ​​characterize the communication ability of the energy meter, and they are all related to the energy meter test standard. Therefore, the user response characteristic values, climate environment characteristic values, grid environment characteristic values ​​and networking environment characteristic values ​​determined above can be used to determine whether the corresponding on-site environment meets the energy meter test standard. If the corresponding on-site environment meets the energy meter test standard, several energy meters to be tested are installed in a field environment that meets the energy meter test standard, and characteristic data of each energy meter to be tested is periodically collected, and then based on each characteristic data, it is determined whether there is a problem with the operation reliability of the corresponding energy meter to be tested, that is, whether the energy meter to be tested can guarantee reliable operation in the complex climate environment, grid environment and networking environment of the on-site environment, which improves the reliability of the verification of the energy meter to be tested and greatly reduces the risk of on-site operation of the energy meter to be tested.

[0070] It should be noted that, in actual applications, the characteristic data of the electric energy meter to be tested that needs to be collected by this solution generally include: power data, operation data and clock data, etc. It is only necessary to ensure accurate verification of the operating reliability of the electric energy meter to be tested, and this application does not make any special limitations here.

[0071] It should also be noted that the existing scheme for testing electric energy meters is:

[0072] 1) Build a test environment in a laboratory environment, including power supply, rack, real load and other equipment, simulate various virtual loads or connect some real loads, simulate some interference impacts and working conditions during the test, and simulate the test of a typical power consumption environment.

[0073] 2) The scale of the test depends on the investment in equipment and site. After one batch of samples is tested, another batch is replaced. The simulated on-site operation test usually requires a test cycle of ≥6 months, and the test bottleneck is prominent.

[0074] 3) A constant temperature and humidity test chamber can be used to simulate some typical climate characteristics. However, due to the size of the constant temperature and humidity test chamber, it is generally small in scale.

[0075] The defects of the existing scheme for testing electric energy meters are:

[0076] 1. It is difficult to simulate the on-site climate environment, power grid environment, and networking environment, and the coverage rate is low:

[0077] 1) The climatic environment of field applications is complex, including extreme temperature (low or high temperature), extreme humidity (high humidity or dryness), high salt fog, high ultraviolet rays, frequent lightning strikes, wind and rain, and other climatic characteristics. Only some typical environments can be simulated in the laboratory environment, which is different from the climatic environment of field applications, thus causing deviations in the test results.

[0078] 2) The grid environment of field applications is complex, including grid power fluctuations (overvoltage, undervoltage, phase failure, frequency drift, power on and off, etc.), harmonic shocks (high-order harmonics, interharmonics, odd harmonics, DC even harmonics, etc.), and interference shocks (fast transient pulse group interference, surge, radio interference, high-frequency noise, voltage flicker, etc.). In the laboratory environment, the grid environment is clean and can only simulate some typical power consumption environments, which is different from the grid environment of field applications, resulting in deviations in the test results.

[0079] 3) The combined impact of the on-site climate environment and power grid environment cannot be fully simulated, the test coverage is low, and the sporadic and random nature of the on-site environment is difficult to capture and cover.

[0080] 2. The test scale is limited, there are test bottlenecks, and the economic benefits are low:

[0081] 1) The simulation field operation test cycle is long, and one set of equipment can only connect to a batch of tested samples, which is inefficient.

[0082] 2) Connecting to a real load will incur additional electricity costs, and the cost of continuous testing is high and the economic benefits are low.

[0083] 3. There are big differences in network testing and data collection, and the coverage rate is low:

[0084] 1) Using host computers and local test systems for data monitoring and detection cannot fully cover remote data monitoring and detection, and the coverage rate is low.

[0085] 2) The networking environment of field applications is complex, including interference from other stations, high-frequency data collection, wide networking range, and complex power grid environment. In a laboratory environment, only some typical environments can be simulated and the power grid environment is clean, which is different from the networking environment of field applications, resulting in deviations in the test results.

[0086] It should also be noted that the present application replaces laboratory environment testing with on-site testing to form a set of on-site testing systems and methods to solve the following problems:

[0087] 1) Solve the problems of single climate environment, power grid environment, and networking environment in the laboratory environment, inability to simulate the comprehensive impact, and low coverage, shorten the difference with field applications, comprehensively verify the reliability of the electric energy meter, and reduce the risk of field operation.

[0088] 2) Solve the scientific problem of site selection during user on-site testing.

[0089] 3) Solve the problem of high maintenance costs during user on-site testing.

[0090] 4) Solve the accuracy issues of data collection and data comparison during user on-site testing.

[0091] 5) As a legal measuring instrument, electric energy meters will cause economic disputes or complaints when users are affected by problems or defects in the measured samples. Technical solutions are used to ensure that the user's main meter is not affected.

[0092] In addition, this application selects users with typical characteristics for on-site testing, which has high economic benefits;

[0093] 1) Utilize user's on-site resources without equipment investment.

[0094] 2) Multiple typical characteristic users are tested on site in parallel, with a large test scale and no additional electricity costs.

[0095] 3) All areas are connected to the test system for data monitoring and management, with low on-site maintenance costs.

[0096] The present embodiment provides a method for testing an electric energy meter. Taking into account that the climate environment, power grid environment, and networking environment in the field environment are relatively complex, the reliability of the electric energy meter can be verified more accurately. Therefore, the present scheme first determines the user response characteristic values, climate environment characteristic values, power grid environment characteristic values, and networking environment characteristic values ​​corresponding to several field environments, and then determines whether the field environment corresponding to each characteristic value meets the electric energy meter testing standard. The electric energy meter to be tested is then installed in a field environment that meets the electric energy meter testing standard. The characteristic data of the electric energy meter to be tested that is periodically collected is used to determine whether there are any problems with the operating reliability of the electric energy meter to be tested in the complex climate environment, power grid environment, and networking environment, so as to improve the reliability of the verification of the electric energy meter to be tested and greatly reduce the risk of the electric energy meter to be tested in the field operation.

[0097] Based on the above embodiments:

[0098] As an optional embodiment, determining the user response characteristic values ​​corresponding to a plurality of on-site environments includes:

[0099] Obtain the authorized value of the competent department corresponding to each site environment, the number of users who agree to implement the system, and the average cost of the users who agree to implement the system;

[0100] Determine the actual user willingness value corresponding to each on-site environment based on the number of users who agree to implement, the average cost, and the actual user willingness value determination formula;

[0101] The permitted values ​​of the competent authorities and the actual user willingness values ​​are taken as the user response characteristic values ​​corresponding to each on-site environment.

[0102] In the present invention, because the user response characteristic value needs to be comprehensively evaluated by collecting data such as the degree of cooperation and costs of the power metering management department and the actual users through market research, user visits, communication with the competent department, etc., that is, it is necessary to determine the permission value of the competent department and the actual user's willingness value, so this scheme needs to obtain the permission value of the competent department corresponding to each site environment, the number of users who agree to implement and the average cost corresponding to the users who agree to implement, and substitute them into the actual user willingness value determination formula to accurately obtain the actual user willingness value, and the final determined permission value of the competent department and the actual user willingness value are the user response characteristic values ​​corresponding to each site environment, which ensures the integrity and accuracy of the user response characteristic value determination process.

[0103] It should be noted that the overall process of this application is as follows: Figure 2 As shown, firstly, modeling is carried out based on the three characteristics of the user's on-site environment, namely, the climate environment, the power grid environment, and the networking environment, and the two dimensions of user response, and user sites with typical characteristics are selected for testing to achieve high test coverage and significant test results. Beta test locations with strong pertinence are selected in combination with the main sales markets of the product, as shown in Table 1:

[0104] Table 1

[0105]

[0106] It should also be noted that as a legal measuring instrument, the electric energy meter is managed by the electric power metering management department. The implementation of Beta testing first requires authorization and permission from the management department, and secondly, the consent of the actual users.

[0107] Data was collected through questionnaire surveys, user visits, and communication with competent authorities, and the site use costs, cooperation and other data were analyzed, as shown in Table 2:

[0108] Table 2

[0109]

[0110] As an optional embodiment, determining climate environment characteristic values ​​corresponding to a plurality of on-site environments includes:

[0111] Obtain the number of several preset typical climate characteristics in each field environment and the typical climate characteristic proportion value corresponding to each preset typical climate characteristic;

[0112] The ratio of the sum of the proportions of each typical climate feature to the number of each preset typical climate feature is used as the climate environment characteristic value corresponding to each site environment.

[0113] In the present invention, it is considered that the climate environment characteristic value represents the climate resistance of the electric energy meter, and the more typical climate characteristics there are, the more obvious the climate environment characteristics are, and the more significant the test effect on the electric energy meter is. Therefore, in order to determine the climate environment characteristic value corresponding to the on-site environment, this scheme needs to first obtain the number of several preset typical climate characteristics in each on-site environment and the typical climate characteristic proportion value corresponding to each preset typical climate characteristic, and take the ratio of the sum of the proportion values ​​of each typical climate characteristic to the number of each preset typical climate characteristic as the climate environment characteristic value corresponding to each on-site environment, thereby ensuring the integrity and accuracy of the climate environment characteristic value determination process.

[0114] It should be noted that the effect of the Beta test is strongly related to the on-site climate and environmental characteristics. When evaluating the weather resistance of the electric energy meter, the more typical climate characteristics there are and the more obvious the characteristics are, the more significant the test effect will be, as shown in Table 3:

[0115] Table 3

[0116]

[0117] As an optional embodiment, determining a plurality of power grid environment characteristic values ​​and networking environment characteristic values ​​corresponding to the field environments includes:

[0118] Obtain the number of factors affecting the power quality of the power grid, the number of factors affecting power fluctuation of the power grid, the number of factors affecting harmonic impact, and the number of factors affecting power interference in each on-site environment;

[0119] The ratio of the sum of the number of grid power fluctuation influence factors, the number of harmonic impact influence factors and the number of power interference influence factors to the number of grid power quality influence factors is taken as the grid environment characteristic value;

[0120] Determine the number of networking methods that can be used in each site environment and the number of electric energy meters that can be connected;

[0121] The networking environment characteristic value corresponding to each on-site environment is determined according to the number of possible networking modes, the number of connectable electric energy meters and the networking environment characteristic value determination formula.

[0122] In the present invention, it is considered that the grid environment characteristic value characterizes the anti-interference ability of the electric energy meter, and the actual grid environment includes a variety of grid environment influencing factors. The more grid environment influencing factors, the more obvious the grid environment characteristics are, and the more significant the test effect on the electric energy meter is. Therefore, in order to determine the grid environment characteristic value corresponding to the on-site environment, this scheme needs to first obtain the number of grid power quality influencing factors, the number of grid power fluctuation influencing factors, the number of harmonic impact influencing factors, and the number of power supply interference influencing factors of each on-site environment, and calculate the ratio of the sum of the number of grid power fluctuation influencing factors, the number of harmonic impact influencing factors, and the number of power supply interference influencing factors to the number of grid power quality influencing factors. The calculated result is the grid environment characteristic value, which ensures the integrity and accuracy of the grid environment characteristic value determination process. In addition, considering that the characteristic value of the networking environment represents the communication performance of the electric energy meter, and the larger the scale of the networking environment and the more complex the networking method, the more significant the test effect on the electric energy meter, and the complexity of the networking method is related to the number of networking methods, and the scale of the networking is related to the number of electric energy meters that can be connected to the on-site environment, this scheme needs to determine the characteristic value of the networking environment corresponding to the on-site environment. It is necessary to first determine the number of networking methods that can be performed in each on-site environment and the number of electric energy meters that can be connected, and then substitute the determined number of networking methods and the number of electric energy meters that can be connected into the networking environment characteristic value determination formula, so as to accurately determine the networking environment characteristic value corresponding to each on-site environment, thereby ensuring the integrity and accuracy of the networking environment characteristic value determination process.

[0123] It should be noted that the effect of the Beta test is strongly related to the characteristics of the on-site power grid environment. The more the number of typical power grid environment influencing factors and the more complex the characteristics, the more significant the test effect, as shown in Table 4:

[0124] Table 4

[0125]

[0126] It should also be noted that the effect of the Beta test is strongly related to the characteristics of the on-site networking environment. When evaluating the communication performance of the electric energy meter, the larger the scale of the typical networking environment and the more complex the networking method, the more significant the test effect, as shown in Table 5:

[0127] Table 5

[0128]

[0129] As an optional embodiment, judging whether the corresponding on-site environment meets the electric energy meter test standard according to each user response characteristic value, each climate environment characteristic value, each power grid environment characteristic value and each networking environment characteristic value includes:

[0130] Determine the environmental impact factor corresponding to each on-site environment based on the characteristic values ​​of each climate environment, each power grid environment, each networking environment and the environmental impact factor determination formula;

[0131] Determine whether the permitted value of the competent department corresponding to each on-site environment is not less than the first preset value, whether the actual user willingness value is not less than the second preset value, and whether the environmental impact factor is not less than the third preset value;

[0132] If the permitted value of the competent department corresponding to each on-site environment is not less than the first preset value, the actual user willingness value is not less than the second preset value, and the environmental impact factor is not less than the third preset value, then it is determined that the corresponding on-site environment meets the electric energy meter test standard;

[0133] If the permitted value of the competent department corresponding to each on-site environment is less than the first preset value, or the actual user willingness value is less than the second preset value, or the environmental impact factor is less than the third preset value, it is determined that the corresponding on-site environment does not meet the electric energy meter test standard.

[0134] In the present invention, because each user response characteristic value, each climate environment characteristic value, each power grid environment characteristic value and each networking environment characteristic value have their own standards, that is, numerical requirements, and each climate environment characteristic value, each power grid environment characteristic value and each networking environment characteristic value all belong to the influence of environmental factors on the electric energy meter test, it is necessary to first determine the environmental impact factor corresponding to each on-site environment according to the climate environment characteristic value, each power grid environment characteristic value, each networking environment characteristic value and the environmental impact factor determination formula, and because the user response characteristic value is divided into the competent department permission value and the actual user willingness value, it is necessary to judge these two values ​​separately, and the actual judgment process is: judge whether the competent department permission value corresponding to each on-site environment is not less than the first The preset value, whether the actual user willingness value is not less than the second preset value, and whether the environmental impact factor is not less than the third preset value; if the permitted value of the competent department corresponding to each on-site environment is not less than the first preset value, the actual user willingness value is not less than the second preset value, and the environmental impact factor is not less than the third preset value, that is, all three conditions are met, then the corresponding on-site environment can be determined to meet the electric energy meter test standard; conversely, if the permitted value of the competent department corresponding to each on-site environment is less than the first preset value or the actual user willingness value is less than the second preset value or the environmental impact factor is less than the third preset value, that is, one of the three conditions is not met, then the corresponding on-site environment can be determined to not meet the electric energy meter test standard, which ensures the accuracy and reliability of the electric energy meter test standard judgment process.

[0135] It should be noted that the official electric energy meter (user main meter) installed by the power metering management department is the main meter for trade settlement. The electric energy meter to be tested is installed in front of the main meter as the auxiliary meter, and data comparison can be performed regularly between the main and auxiliary meters. Intelligent micro-break switches (normally closed switches and normally open switches) are installed at the front and rear ends of the auxiliary meter, which can be remotely controlled by the Beta test system, such as Figure 3 As shown, the user main meter 1-N is the user main meter, and the measured meter 1-N is the electric energy meter to be tested. The collection terminal of the power metering management department is used to collect the data of the user main meter, and the test meter collection terminal is used to collect the data of the electric energy meter to be tested. In this scheme, the collection terminal of the power metering management department and the test meter collection terminal are combined and referred to as a processor. Once a serious fault such as power failure occurs in the auxiliary meter, the micro-breaker switch can be quickly switched to switch the line, so as not to affect the normal operation of the user's main meter, and reduce the impact on the user's on-site main meter and the user's normal electricity consumption. Among them, 1) User main meter data: The user main meter file is filed in the power metering management department collection terminal, and the user main meter data is regularly collected through the power metering management department's collection terminal. 2) Tested meter (electric energy meter to be tested) data: The tested meter file is filed in the test meter collection terminal, and the tested meter data is regularly collected through the test meter collection terminal. The Beta test system analyzes the data of the test meter collection terminal to obtain the test results. 3) Data comparison between the user's main meter and the meter under test: A one-to-one correspondence is established between the user's main meter and the supplementary meter and maintained in the Beta test system. Remote file management and testing are achieved through the Beta test system. The data from the collection terminal of the power metering management department is obtained and imported into the Beta test system for data analysis and comparison.

[0136] As an optional embodiment, judging whether there is a problem with the operation reliability of the corresponding electric energy meter to be tested based on each characteristic data includes:

[0137] Determine the power data, operation data and clock data corresponding to each electric energy meter to be tested based on each characteristic data;

[0138] According to each power data, determine the power increment accuracy, reverse flow measurement value, anti-flyaway measurement value, time-sharing power measurement value and power deviation value between the power meter to be tested and the corresponding user master meter in the on-site environment corresponding to each power meter to be tested;

[0139] Based on the incremental accuracy of each power quantity, each reverse flow measurement value, each anti-flyaway measurement value, each time-sharing power measurement value, each power deviation value, each operating data and each clock data, it is determined whether there is a problem with the operating reliability of the corresponding electric energy meter to be tested.

[0140] In the present invention, since a user main meter is provided in the on-site environment, the scheme can judge whether there is a problem in the operation reliability of the electric energy meter to be tested by collecting the characteristic data of the user main meter for self-comparison or simultaneously collecting the characteristic data of the user main meter corresponding to each electric energy meter to be tested in the on-site environment for mutual comparison, and since the electric energy data, operation data and clock data corresponding to the electric energy meter to be tested can accurately characterize the operation reliability of the electric energy meter to be tested, the scheme first determines the electric energy data, operation data and clock data corresponding to each electric energy meter to be tested based on each characteristic data, and then respectively determines the electric energy increment accuracy, the reverse flow measurement value, the anti-flyaway measurement value, the time-sharing electric energy measurement value and the electric energy deviation value between the electric energy meter to be tested and the corresponding user main meter in the on-site environment, that is, determines the total electric energy of the electric energy meter to be tested in a unit period, the time-sharing electric energy and the electric energy deviation between the electric energy meter to be tested and the corresponding user main meter, etc. In addition, the operation reliability of the electric energy meter to be tested can be verified by the operation data and clock data of the electric energy meter to be tested, thereby ensuring the integrity and accuracy of the scheme.

[0141] It should be noted that the operational reliability of the electric energy meter to be tested is verified by the electric energy meter's own electric energy data, which is roughly divided into five judgment processes, namely: 1. Compare the zero-point electric energy data of the electric energy meter to be tested with the zero-point electric energy data of the previous day, that is, perform a reverse flow measurement test, and the determined reverse flow measurement value can reflect whether the test is qualified. Because the reverse flow measurement value should not appear in the on-site working conditions, after comparing the reverse electric energy data at zero o'clock on the day with the reverse electric energy data at zero o'clock on the previous day, if they are not equal, the electric energy meter to be tested is judged to be unqualified, and when the reverse electric energy data at zero o'clock on the day is not equal to the reverse electric energy data at zero o'clock on the previous day, the reverse flow measurement value will be output; 2. According to the sequence of several second-time-sharing electric energy collected at preset intervals, judge the difference between the second moment and the second moment. Whether the difference between the two time-sharing electricity is greater than zero; 3. Determine the hourly electricity of the electric energy meter to be tested, and then calculate the difference between each hourly electricity and the previous hourly electricity, that is, the hourly electricity increment, and determine whether the hourly electricity increment is not greater than the preset electricity increment; 4. Determine whether the sum of the time-sharing electricity is not greater than the corresponding current zero-point total electricity, that is, determine whether the total electricity of each electric energy meter to be tested at the same time is not less than the sum of the time-sharing electricity; 5. Compare the electricity data of the user's main meter and the electric energy meter to be tested, that is, determine the time-sharing electricity difference between each first time-sharing electricity and each second time-sharing electricity at the same time, determine the initial electricity difference between each first initial electricity and the corresponding second initial electricity, and use the sum of the difference between each time-sharing electricity and each initial electricity difference as the electricity error between the user's main meter and the corresponding electric energy meter to be tested, and determine whether the electricity error is not greater than the preset error value. If all of the above conditions are met, it is determined that the corresponding electric energy meter to be tested does not have a fault; conversely, if any of the above conditions is not met, it is determined that the corresponding electric energy meter to be tested has a fault. The integrity and accuracy of the fault judgment process are guaranteed.

[0142] As an optional embodiment, judging whether there is a problem with the operation reliability of the corresponding electric energy meter to be tested based on each clock data includes:

[0143] Determine the real time and clock battery voltage corresponding to each electric energy meter to be tested according to each clock data;

[0144] Determine the clock deviation of each real time and the corresponding standard time;

[0145] Determine whether the clock deviations corresponding to each of the electric energy meters to be tested are within a preset clock deviation range and whether the clock battery voltages corresponding to each of the electric energy meters to be tested are not less than a preset voltage threshold;

[0146] If the clock deviations corresponding to the electric energy meters to be tested are all within the preset clock deviation range and the clock battery voltages corresponding to the electric energy meters to be tested are not less than the preset voltage threshold, it is determined that there is no problem with the operating reliability of the electric energy meters to be tested;

[0147] If the corresponding clock deviation of each tested electric energy meter is not within the preset clock deviation range or the corresponding clock battery voltage of each tested electric energy meter is less than the preset voltage threshold, it is determined that there is a problem with the operating reliability of the corresponding tested electric energy meter.

[0148] In the present invention, considering that whether the electric energy meter has a fault is not only related to the electric power data, but also to the clock data of the electric energy meter, and the clock deviation and clock battery voltage in the clock data can characterize the operating reliability of the electric energy meter, so this scheme also determines the real-time time and clock battery voltage corresponding to each electric energy meter to be tested according to each clock data, and determines the clock deviation between each real-time time and the corresponding standard time, and finally judges whether the clock deviation corresponding to each electric energy meter to be tested is within the preset clock deviation range and whether the clock battery voltage corresponding to each electric energy meter to be tested is not less than the preset voltage threshold. If the clock deviation corresponding to each electric energy meter to be tested is within the preset clock deviation range and the clock battery voltage corresponding to each electric energy meter to be tested is not less than the preset voltage threshold, it is determined that there is no problem with the operating reliability of each electric energy meter to be tested; conversely, if there is an electric energy meter to be tested whose corresponding clock deviation is not within the preset clock deviation range or there is an electric energy meter to be tested whose corresponding clock battery voltage is less than the preset voltage threshold among the electric energy meters to be tested, it is determined that there is a problem with the operating reliability of the corresponding electric energy meter to be tested. The reliability of the verification of the electric energy meter under test is improved, and the risk of the electric energy meter under test in on-site operation is greatly reduced.

[0149] As an optional embodiment, judging whether there is a problem with the operation reliability of the corresponding electric energy meter to be tested based on each operation data includes:

[0150] Determine the operating status parameters and liquid crystal display status of each electric energy meter to be tested according to each operating data;

[0151] Based on each operating status parameter, determine whether each corresponding electric energy meter to be tested has not experienced abnormal operation and based on each liquid crystal display status, determine whether each electric energy meter to be tested has normal display;

[0152] If none of the electric energy meters to be tested has experienced any abnormal operation and all of the electric energy meters to be tested display normally, it is determined that there is no problem with the operation reliability of each of the electric energy meters to be tested;

[0153] If abnormal operation has occurred in any of the electric energy meters to be tested and any of the electric energy meters to be tested has abnormal display, it is determined that there is a problem with the operation reliability of the corresponding electric energy meter to be tested.

[0154] In the present invention, considering that the electric energy meter may have operating faults such as power failure in actual work, the operating status parameters of the electric energy meter in actual operation can characterize the operating reliability of the electric energy meter. In addition, because the electric energy meter is also provided with a liquid crystal display screen and needs to display data such as electric quantity through the liquid crystal display screen, the liquid crystal display state corresponding to the liquid crystal display screen can also characterize the operating reliability of the electric energy meter. Therefore, the present scheme also periodically collects the operating status parameters and liquid crystal display state of each electric energy meter to be tested, and judges whether the corresponding electric energy meters to be tested have not had any abnormal operating conditions based on each operating status parameter and judges whether the electric energy meters to be tested have normal display based on each liquid crystal display state. If the electric energy meters to be tested have not had any abnormal operating conditions and the electric energy meters to be tested have normal display, it is determined that there is no problem with the operating reliability of the electric energy meters to be tested; conversely, if there are electric energy meters to be tested that have had abnormal operating conditions and there are electric energy meters to be tested that have abnormal display among the electric energy meters to be tested, it is determined that there is a problem with the operating reliability of the corresponding electric energy meters to be tested. The reliability of the verification of the electric energy meter under test is improved, and the risk of the electric energy meter under test in on-site operation is greatly reduced.

[0155] As an optional embodiment, it also includes:

[0156] Collect the whole machine parameters of each electric energy meter to be tested before the test, the whole machine parameters after the test, and the characteristic data of the user master meter corresponding to each electric energy meter to be tested in the field environment;

[0157] Accordingly, judging whether there is a problem with the operation reliability of the corresponding electric energy meter to be tested based on each characteristic data includes:

[0158] Based on the whole machine parameters before each test, the whole machine parameters after each test, the characteristic data of each electric energy meter to be tested and the characteristic data of each user's main meter, it is determined whether there is a problem with the operation reliability of the corresponding electric energy meter to be tested.

[0159] In the present invention, considering that verifying the operational reliability of the electric energy meter to be tested by the characteristic data of the electric energy meter to be tested is to verify the operational reliability of the electric energy meter to be tested vertically, and the user main meter in the field environment is a legal metering instrument verified by the competent department, which is equivalent to a benchmark, so this scheme also needs to regularly compare the data of the electric energy meter to be tested and the user main meter, that is, to perform a verification test on the consistency of the main and auxiliary meters, and use the verification result as the basis for judging the operational reliability. In addition, considering that whether there is a problem with the operational reliability of the electric energy meter can also be judged by whether the parameters before the test are consistent with the parameters after the test, so this scheme also needs to collect the pre-test whole machine parameters of each electric energy meter to be tested, the post-test whole machine parameters and the characteristic data of the user main meter corresponding to each electric energy meter to be tested in the field environment, and judge whether there is a problem with the operational reliability of the corresponding electric energy meter to be tested based on the three or four conditions of the pre-test parameters, the post-test parameters, the characteristic data of each electric energy meter to be tested and the characteristic data of the user main meter, thereby improving the reliability of the verification of the electric energy meter to be tested and greatly reducing the risk of the electric energy meter to be tested in the field.

[0160] To solve the above technical problems, the present invention also provides an electric energy meter testing system, comprising: a plurality of normally closed switches, a plurality of electric energy meters to be tested, a plurality of normally open switches, a plurality of user master meters, and a processor;

[0161] The input end of each normally closed switch is connected to the power grid, the output end is connected to the input end of the corresponding electric energy meter to be tested, and the control end is connected to the output end of the processor;

[0162] The input end of each normally open switch is connected to the power grid, the output end is connected to the input end of the corresponding user main meter, and the control end is connected to the output end of the processor;

[0163] The output terminal of each electric energy meter to be tested is connected to the input terminal of the corresponding user main meter;

[0164] The output end of each user's main meter is connected to the corresponding load;

[0165] The sampling end of the processor is respectively connected to the data output end of each electric energy meter to be detected and the data output end of each user main meter, and is used to control the opening and closing of each normally closed switch and each normally open switch.

[0166] In the present invention, considering that it is necessary to supply power to the electric energy meter to be tested and the user's main meter at the same time in the field environment, and to bypass the electric energy meter to be tested when a fault occurs in the electric energy meter to be tested, and keep the user's main meter maintaining normal power consumption, the present solution sets a plurality of normally closed switches, a plurality of electric energy meters to be tested, a plurality of normally open switches, a plurality of user's main meters, and a processor. The processor collects characteristic values ​​and data of the user's main meters and the electric energy meters to be tested, and controls the opening and closing of the normally closed switch and the normally open switch. When the processor determines that a fault occurs in the electric energy meter to be tested, the normally open switch is controlled to be opened and the normally closed switch is controlled to be closed, thereby realizing rapid power off of the electric energy meter to be tested, and the user's main meter maintains normal power consumption, thereby avoiding the impact of the fault of the electric energy meter to be tested on the user's normal power consumption, and avoiding complaints or economic disputes from users.

[0167] It should be noted that the installation diagram of the electric energy meter to be tested in the electric energy meter test system is as follows Figure 4 As shown in the figure, the smart micro-breaker and the meter under test are installed in front of the user's main meter. The power consumption of the smart micro-breaker and the meter under test will not be accumulated to the actual user, avoiding complaints from actual users, improving the cooperation and willingness of actual users to respond, and promoting the establishment of the Beta test site. The corresponding fees for the Beta test are collected by calculating the line loss through the collection terminal of the power metering management department, and estimating the power consumption by measuring the power consumption of the smart micro-breaker and the meter under test. The architecture diagram of the test system is shown in Figure 5 As shown in the figure, the Beta test system, i.e., the internal functional module diagram of the processor is as follows Figure 6 As shown, the data flow of the electric energy meter test system is as follows Figure 7 The detailed test process is as shown in Figure 8 shown.

[0168] It should also be noted that building a Beta test system requires several parts as shown in Table 6:

[0169] Table 6

[0170]

[0171] It should also be noted that: 1. Pre-test test items and result judgment: Before testing the electric energy meter to be tested, it is necessary to conduct pre-test tests according to the electric energy meter product standard requirements to ensure that the tested sample meets the Beta test conditions, as shown in Table 7:

[0172] Table 7

[0173]

[0174] 2. Test items and result determination during the test:

[0175] 1) Measurement accuracy test;

[0176] During the test, the measurement accuracy is assessed to be correct and accurate, as shown in Table 8:

[0177] Table 8

[0178]

[0179] 2) Clock accuracy test, as shown in Table 9:

[0180] Table 9

[0181]

[0182] 3) Run the data test, as shown in Table 10:

[0183] Table 10

[0184]

[0185] 3. Test items and result determination after testing:

[0186] According to the requirements of the electric energy meter product standard, the test was carried out before and after the test, and the performance of the whole machine before and after the Beta test was compared, as shown in Table 11:

[0187] Table 11

[0188]

[0189] It should also be noted that the innovations and advantages of this application can be roughly divided into the following points:

[0190] 1. Based on the user's on-site test environment, it fills the gap in the traditional laboratory test environment, fits the actual user's complex operating site, and achieves the purpose of verifying product reliability.

[0191] 2. Beta test site selection model scientifically selects an environment suitable for testing, covering a comprehensive evaluation of the climate environment, power grid environment and networking environment, avoiding test result deviations caused by differences in the on-site environment and greatly improving the test effect.

[0192] 3. The installation method of the tested prototype is designed to use intelligent micro-break switches for effective emergency prevention to avoid disputes and complaints caused by on-site operation failures.

[0193] 4. Beta testing system can manage multiple Beta testing locations at the same time, adopt daily, monthly and quarterly targeted testing plans to avoid congestion in communication channels and improve testing efficiency and reliability.

[0194] 5. The test system adopts remote testing and automatic data comparison to greatly improve test efficiency and reduce manual intervention and maintenance costs.

[0195] 6. The evaluation of test results not only examines the product reliability during the test, but also analyzes the data before and after the test, and simultaneously examines the performance of the entire machine after long-term field operation.

[0196] It should be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0197] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for testing an electric energy meter, characterized in that: include: Determine a user response characteristic value, a climate environment characteristic value, a power grid environment characteristic value, and a networking environment characteristic value corresponding to a number of on-site environments, wherein the user response characteristic value represents the user's cooperation, the climate environment characteristic value represents the weather resistance of the electric energy meter, the power grid environment characteristic value represents the anti-interference capability of the electric energy meter, and the networking environment characteristic value represents the communication capability of the electric energy meter; Determine whether the corresponding on-site environment meets the electric energy meter test standard according to each of the user response characteristic values, each of the climate environment characteristic values, each of the power grid environment characteristic values ​​and each of the networking environment characteristic values; If the corresponding field environment meets the electric energy meter test standard, several electric energy meters to be tested are installed in the field environment that meets the electric energy meter test standard, and characteristic data corresponding to each of the electric energy meters to be tested is periodically collected; Based on each of the characteristic data, it is determined whether there is a problem with the operating reliability of the corresponding electric energy meter to be tested.

2. The electric energy meter testing method according to claim 1, characterized in that: Determine the user response characteristic values ​​corresponding to several on-site environments, including: Obtain the permission value of the competent department corresponding to each of the site environments, the number of users who agree to implement the implementation, and the average cost of the users who agree to implement the implementation; Determine the actual user willingness value corresponding to each of the on-site environments according to the number of users who agree to implement the implementation, the average cost value and the actual user willingness value determination formula; The authorized value of the competent department and the actual user willingness value are used as the user response characteristic value corresponding to each of the on-site environments.

3. The electric energy meter testing method according to claim 1, characterized in that: Determine the climate and environmental characteristic values ​​corresponding to several on-site environments, including: Obtaining the number of a plurality of preset typical climate characteristics in each of the on-site environments and the typical climate characteristic proportion value corresponding to each of the preset typical climate characteristics; The ratio of the sum of the proportions of the typical climate characteristics to the number of the preset typical climate characteristics is used as the climate environment characteristic value corresponding to each of the on-site environments.

4. The electric energy meter testing method according to claim 1, characterized in that: Determine the grid environment characteristic values ​​and networking environment characteristic values ​​corresponding to several on-site environments, including: Obtaining the number of grid power quality influencing factors, the number of grid power fluctuation influencing factors, the number of harmonic impact influencing factors, and the number of power interference influencing factors of each of the site environments; The ratio of the sum of the number of the power supply fluctuation influence factors, the number of the harmonic impact influence factors and the number of the power supply interference influence factors to the number of the power supply quality influence factors of the power supply is taken as the power grid environment characteristic value; Determine the number of networking modes that can be performed in each of the field environments and the number of electric energy meters that can be connected; The networking environment characteristic value corresponding to each of the field environments is determined according to the number of possible networking modes, the number of connectable electric energy meters and a formula for determining the networking environment characteristic value.

5. The electric energy meter testing method according to claim 2, characterized in that: The determining, according to each of the user response characteristic values, each of the climate environment characteristic values, each of the power grid environment characteristic values ​​and each of the networking environment characteristic values, whether the corresponding on-site environment meets the electric energy meter test standard comprises: Determine the environmental impact factor corresponding to each of the on-site environments according to each of the climate environment characteristic values, each of the power grid environment characteristic values, each of the networking environment characteristic values ​​and the environmental impact factor determination formula; Determine whether the permission value of the competent department corresponding to each of the on-site environments is not less than a first preset value, whether the actual user willingness value is not less than a second preset value, and whether the environmental impact factor is not less than a third preset value; If the permitted value of the competent department corresponding to each of the on-site environments is not less than the first preset value, the actual user willingness value is not less than the second preset value, and the environmental impact factor is not less than the third preset value, then it is determined that the corresponding on-site environment meets the electric energy meter test standard; If the permitted value of the competent department corresponding to each of the on-site environments is less than the first preset value, or the actual user willingness value is less than the second preset value, or the environmental impact factor is less than the third preset value, it is determined that the corresponding on-site environment does not meet the electric energy meter test standard.

6. The electric energy meter testing method according to claim 1, characterized in that: The determining, based on each of the characteristic data, whether there is a problem with the operation reliability of the corresponding electric energy meter to be tested includes: Determine the power data, operation data and clock data corresponding to each of the electric energy meters to be tested based on each of the characteristic data; Determine the power increment accuracy, reverse flow measurement value, anti-flyaway measurement value, time-sharing power measurement value, and power deviation value between the power meter to be tested and the corresponding user master meter in the on-site environment according to each of the power data; Based on the accuracy of each of the aforementioned power increase, each of the aforementioned reverse flow measurement values, each of the aforementioned anti-flyaway measurement values, each of the aforementioned time-sharing power measurement values, each of the aforementioned power deviation values, each of the aforementioned operating data and each of the aforementioned clock data, it is determined whether there is a problem with the operating reliability of the corresponding aforementioned electric energy meter to be tested.

7. The electric energy meter testing method according to claim 6, characterized in that: Judging whether there is a problem with the operation reliability of the corresponding electric energy meter to be tested based on each of the clock data includes: Determine the real time and clock battery voltage corresponding to each of the electric energy meters to be tested according to each of the clock data; Determining a clock deviation between each of the real time and a corresponding standard time; Determine whether the clock deviations corresponding to the electric energy meters to be tested are within a preset clock deviation range and whether the clock battery voltages corresponding to the electric energy meters to be tested are not less than a preset voltage threshold; If the clock deviations corresponding to the electric energy meters to be tested are all within the preset clock deviation range and the clock battery voltages corresponding to the electric energy meters to be tested are not less than the preset voltage threshold, it is determined that there is no problem with the operating reliability of the electric energy meters to be tested; If the corresponding clock deviation of each of the electric energy meters to be tested is not within the preset clock deviation range or the corresponding clock battery voltage of each of the electric energy meters to be tested is less than the preset voltage threshold, it is determined that there is a problem with the operating reliability of the corresponding electric energy meter to be tested.

8. The electric energy meter testing method according to claim 6, characterized in that: Judging whether there is a problem with the operation reliability of the corresponding electric energy meter to be tested based on each of the operation data includes: Determine the operating state parameters and liquid crystal display state of each of the electric energy meters to be tested according to each of the operating data; Based on each of the operating status parameters, determine whether each of the corresponding electric energy meters to be tested has not experienced abnormal operation, and based on each of the liquid crystal display states, determine whether each of the electric energy meters to be tested has normal display; If none of the electric energy meters to be tested has experienced abnormal operation and all of the electric energy meters to be tested display normally, it is determined that there is no problem with the operational reliability of all of the electric energy meters to be tested; If any of the electric energy meters to be tested has experienced abnormal operation and any of the electric energy meters to be tested has abnormal display, it is determined that there is a problem with the operation reliability of the corresponding electric energy meter to be tested.

9. The electric energy meter testing method according to any one of claims 1 to 8, characterized in that: Also includes: Collecting the whole machine parameters before and after the test of each of the electric energy meters to be tested and the characteristic data of the user master meter corresponding to each of the electric energy meters to be tested in the field environment; Correspondingly, judging whether there is a problem with the operation reliability of the corresponding electric energy meter to be tested based on each of the characteristic data includes: Based on the whole machine parameters before each test, the whole machine parameters after each test, the characteristic data of each electric energy meter to be tested and the characteristic data of each user main meter, it is determined whether there is a problem with the operating reliability of the corresponding electric energy meter to be tested.

10. An electric energy meter testing system, characterized in that: include: Several normally closed switches, several electric energy meters to be tested, several normally open switches, several user main meters, and processors; The input end of each normally closed switch is connected to the power grid, the output end is connected to the input end of the corresponding electric energy meter to be tested, and the control end is connected to the output end of the processor; The input end of each normally open switch is connected to the power grid, the output end is connected to the input end of the corresponding user master meter, and the control end is connected to the output end of the processor; The output end of each of the electric energy meters to be tested is connected to the input end of the corresponding user main meter; The output end of each user main meter is connected to the corresponding load; The sampling end of the processor is respectively connected to the data output end of each electric energy meter to be detected and the data output end of each user main meter, and is used to control the opening and closing of each normally closed switch and each normally open switch.

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