CN116699500A - Online checking method, equipment and medium for automatic calibrating device of electric energy meter - Google Patents
Online checking method, equipment and medium for automatic calibrating device of electric energy meter Download PDFInfo
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Abstract
The application discloses an on-line checking method, equipment and medium for an automatic electric energy meter calibrating device. According to the on-line checking method, the equipment and the medium for the automatic electric energy meter calibrating device, whether the calibrating performance of the automatic electric energy meter calibrating device is qualified or not can be rapidly and accurately checked on-line load for the automatic electric energy meter calibrating device, faults of the automatic electric energy meter calibrating device in the aspects of accuracy, functionality and the like can be timely found on the premise that normal calibrating tasks are not carried out on the automatic electric energy meter calibrating device, checking efficiency is improved, on-line checking cost for the automatic electric energy meter calibrating device can be comprehensively reduced, and labor cost and time cost are reduced.
Description
Technical Field
The application relates to the technical field of electrical equipment and electrical engineering, in particular to an online checking method, equipment and medium of an automatic verification device of an electric energy meter.
Background
The automatic calibrating device for the electric energy meter is a novel automatic meter calibrating system, and is mainly used for automatic calibration or detection of electric energy metering devices such as single-phase electric energy meters, three-phase electric energy meters and the like in electric energy meter production enterprises and metering centers of electric power companies. In order to maintain the reliability of the electric energy metering device and ensure the accuracy and reliability of the traceability and transitivity of the electric energy value, periodic checking of the device according to relevant regulations is one of effective ways.
In the prior art, the performance of the device is checked by a special high-precision checking standard table, the device is accessed during each checking, the checking is completed and removed, and the high-precision checking standard table has large volume, so that the device needs large labor cost and time cost during each checking, and the checking efficiency is reduced.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application.
The application is provided in view of the problems of the on-line checking method, the on-line checking equipment and the medium of the existing automatic electric energy meter calibrating device.
Therefore, a first object of the present application is to provide an on-line checking method for an automatic verification device of an electric energy meter, which aims at: by using a quick and effective method, the checking efficiency is improved and the time is saved.
In order to solve the technical problems, the application provides the following technical scheme: when a checking task is carried out, a checking standard electric energy meter is installed on a checking epitope of an electric energy meter automatic checking device to be tested, the checking standard electric energy meter, the electric energy meter automatic checking device and a data terminal are connected to a checking terminal, the data terminal is connected with the checking standard electric energy meter and the electric energy meter automatic checking device, and the data terminal is connected with a checking terminal;
the verification terminal is controlled to acquire verification data generated by the automatic electric energy meter verification device based on the verification task, the verification terminal is used for controlling the automatic electric energy meter verification device to execute the verification task, and verification data generated by the verification standard electric energy meter based on the verification task is acquired;
and acquiring the verification data from the data terminal by using the verification terminal, judging whether the verification performance of the automatic electric energy meter verification device is qualified according to a preset judgment rule of the accurate device grading, and analyzing whether the verification performance of the automatic electric energy meter verification device is qualified according to the verification data and the verification data.
As a preferable scheme of the on-line checking method of the automatic verification device of the electric energy meter, the application comprises the following steps: and obtaining the verification data of the verification epitope and the verification data according to the verification terminal for analysis, wherein the method comprises the following steps of:
whether the check data is consistent with the verification data;
and if the check data and the verification data do not exceed a preset judgment rule and the absolute values of the two data are consistent, determining that the verification performance of the verification epitope is qualified, and if the check data and the verification data exceed the preset judgment rule or the absolute values of the two data are inconsistent, determining that the verification performance of the verification epitope is unqualified.
As a preferable scheme of the on-line checking method of the automatic verification device of the electric energy meter, the application comprises the following steps: acquiring pulse data of the checking standard electric energy meter according to the checking terminal;
simultaneously acquiring pulse data of an inspection epitope where the inspection standard electric energy meter is located in the electric energy meter automatic inspection device;
and comparing the pulse data of the checking standard electric energy meter with the pulse data of the verification epitope to detect the verification epitope basically and repeatedly in error.
As a preferable scheme of the on-line checking method of the automatic verification device of the electric energy meter, the application comprises the following steps: and when the verification epitopes with unqualified verification performance in the automatic electric energy meter verification device exceed a preset number, determining that the verification performance of the automatic electric energy meter verification device is unqualified.
As a preferable scheme of the on-line checking method of the automatic verification device of the electric energy meter, the application comprises the following steps: the checking standard electric energy meter simulates faults according to the setting of the checking terminal, and stores the checking data when detecting the clock measurement precision of the electric energy meter automatic verification device;
meanwhile, the checking standard electric energy meter sends the checking data to the checking terminal and/or the data terminal;
and uploading and storing the acquired verification data by the verification terminal.
As a preferable scheme of the on-line checking method of the automatic verification device of the electric energy meter, the application comprises the following steps: uploading the obtained checking data, verification data and data of verification performance of the automatic verification device of the electric energy meter obtained through analysis to a database of the data terminal according to a set period for storage;
the verification terminal periodically acquires historical verification performance data of the automatic electric energy meter verification device from the data terminal, establishes a device abnormality information rule base, establishes a mathematical model by adopting a digital twin technology, performs simulation according to the historical verification performance data, analyzes verification performance change information of the verification units and verification epitopes of the automatic electric energy meter verification device, performs alignment simulation according to the device abnormality information rule base corresponding to the verification performance change information, analyzes distribution conditions of abnormal points of the automatic electric energy meter verification device, pre-judges faults, and pre-warns verification performance of the automatic electric energy meter verification device.
As a preferable scheme of the on-line checking method of the automatic verification device of the electric energy meter, the application comprises the following steps: the verification terminal is further used for setting verification parameters matched with the verification tasks for the verification standard electric energy meter, so that the verification standard electric energy meter generates verification data based on the verification tasks;
and the checking terminal is also used for displaying information of unqualified verification performance and giving an alarm if the verification performance of the automatic verification device of the electric energy meter is obtained through analysis.
The second object of the present application is to provide an on-line checking device for an automatic calibrating device for an electric energy meter, which aims at: the system is used for checking the single-phase and three-phase intelligent electric energy meter automatic calibrating device, and can realize functions of automatic period checking, state monitoring, station inspection, conclusion analysis, automatic fault early warning and the like.
In order to solve the technical problems, the application provides the following technical scheme: the method comprises the steps of checking a standard electric energy meter, wherein the standard electric energy meter is arranged on an automatic electric energy meter calibrating device;
the verification terminal is respectively connected with the automatic verification device of the electric energy meter and the verification standard electric energy meter, and is also connected with the data terminal;
and the checking terminal is connected with the checking standard electric energy meter and the data terminal.
As a preferable scheme of the on-line checking equipment of the automatic verification device of the electric energy meter, the application comprises the following steps: the checking standard electric energy meter comprises a fault simulation module, a clock module, a storage module and a data communication module, wherein the fault simulation module is connected with the checking terminal and used for simulating various faults according to the setting of the checking terminal, the clock module is connected with the electric energy meter automatic verification device and used for detecting the clock measurement precision of the electric energy meter automatic verification device, the storage module is used for storing checking data, and the data communication module is connected with the checking terminal or the data terminal and used for sending the checking data to the checking terminal or the data terminal;
the verification terminal comprises an error calculation module connected with the verification standard electric energy meter and the electric energy meter automatic verification device, and a communication module and a data storage module which are arranged in the error calculation module;
the data terminal is provided with a database, so that the verification terminal can conveniently upload verification data to the database for storage;
the automatic electric energy meter calibrating device is provided with a calibrating epitope, and the checking standard electric energy meter is arranged on the calibrating epitope.
The third object of the present application is to provide an on-line checking method, device and medium for an automatic calibrating device of an electric energy meter, which aims at: the stored computer program is utilized to facilitate the execution of the checking method by the processor of the execution instruction, thereby improving the efficiency.
In order to solve the technical problems, the application provides the following technical scheme: the method comprises the step of storing computer executable instructions which are executed by a processor to realize an on-line checking method of the automatic verification device of the electric energy meter.
The application has the beneficial effects that: according to whether the verification performance of the automatic verification device for the electric energy meter is qualified or not, the on-line on-load verification of the automatic verification device for the electric energy meter can be realized rapidly and accurately, faults of the automatic verification device for the electric energy meter in the aspects of accuracy, functionality and the like can be found in time on the premise that normal verification tasks are not carried out by the automatic verification device for the electric energy meter, verification efficiency is improved, on-line verification cost of the automatic verification device for the electric energy meter can be reduced comprehensively, and labor cost and time cost are reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
fig. 1 is a schematic diagram of an application scenario of an online checking method of an automatic verification device for an electric energy meter.
Fig. 2 is a schematic diagram of the overall structure of the on-line checking device of the automatic electric energy meter calibrating device.
Fig. 3 is a schematic diagram of a communication module structure of an on-line checking device of the automatic verification device of the electric energy meter.
Fig. 4 is a schematic diagram of table standard meter verification data of the on-line verification method, equipment and medium of the automatic verification device of the electric energy meter.
Fig. 5 is a schematic diagram of an on-line checking method, equipment and medium of the automatic electric energy meter checking device.
Fig. 6 is a schematic diagram of table surface verification data of the method, apparatus and medium for on-line verification of an automatic verification device of an electric energy meter according to the present application.
FIG. 7 is a schematic diagram showing the comparison of accuracy rates of the method and apparatus for on-line verification of an automatic verification device for an electric energy meter according to the present application in case of different numbers exceeding a preset number.
FIG. 8 is a schematic diagram showing the comparison of accuracy rates under different conditions of the on-line verification method and apparatus for an automatic verification device of an electric energy meter according to the present application.
Fig. 9 is a schematic diagram showing comparison of accuracy rates of the on-line checking method of the automatic electric energy meter calibrating device according to the present application under the condition that the number of the devices does not exceed the preset number.
Detailed Description
In order that the above-recited objects, features and advantages of the present application will become more readily apparent, a more particular description of the application will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the application. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Further, in describing the embodiments of the present application in detail, the cross-sectional view of the device structure is not partially enlarged to a general scale for convenience of description, and the schematic is only an example, which should not limit the scope of protection of the present application. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
Example 1
Referring to fig. 1 and 7-9, for a first embodiment of the present application, an on-line checking method for an automatic verification device for an electric energy meter is provided.
When a checking task is carried out, the checking standard electric energy meter is arranged on a checking epitope of the automatic electric energy meter calibrating device to be tested, the checking standard electric energy meter, the automatic electric energy meter calibrating device and a data terminal are connected to a checking terminal, and the data terminal and the checking standard electric energy meter are connected to the checking terminal; the verification terminal is controlled to acquire verification data generated by the automatic electric energy meter verification device based on the verification task, the verification terminal is used for controlling the automatic electric energy meter verification device to execute the verification task, and verification data generated by the verification standard electric energy meter based on the verification task is acquired; and acquiring verification data from the data terminal by using the verification terminal, and analyzing verification performance of the automatic verification device of the electric energy meter according to the verification data and the verification data.
The verification standard electric energy meter is arranged on verification epitopes of the automatic verification device of the electric energy meter to be tested according to a preset layout, the number of the verification standard electric energy meter is at least one, usually a plurality of the verification standard electric energy meters are randomly arranged or appointed to be arranged on the verification epitopes, the automatic verification device of the electric energy meter is specifically an automatic verification assembly line of the electric energy meter, each assembly line comprises a plurality of verification units, each verification unit comprises a plurality of verification epitopes, and each verification unit can independently execute respective verification tasks.
The verification terminal is connected with the automatic verification device of the electric energy meter, the verification standard electric energy meter and the data terminal, a database is arranged in the data terminal, the verification terminal is connected with the verification standard electric energy meter and the data terminal, and a data analysis program is installed in the verification terminal.
The various terminals can be electronic equipment such as computers and handheld terminals.
The checking terminal is used for controlling the automatic verification device of the electric energy meter to execute verification tasks, in particular to execute experimental projects corresponding to the verification tasks, and the experimental projects can comprise: the method comprises the steps of basic error, standard deviation estimated value, starting, diving, basic error, checking constant, daily timing error, time period switching, 485 communication, demand indication error and other experimental items, obtaining checking data generated by a checking standard electric energy meter based on the checking task, wherein when the checking data are experimental items corresponding to the checking task executed by an electric energy meter automatic checking device, the checking data are experimental result data generated by the checking standard electric energy meter, and can be used as a reference data checking terminal for judging whether the performance of the electric energy meter automatic checking device is qualified or not, and the checking data are used for obtaining the checking data generated by the electric energy meter automatic checking device based on the checking task, transmitting the checking data to a data terminal and storing the checking data in a database of the data terminal, wherein the checking data comprise checking data of each checking epitope in each checking unit.
And judging whether the verification performance of the automatic electric energy meter verification device is qualified according to a preset judgment rule of the accurate calibration level of the device, and analyzing whether the verification performance of the automatic electric energy meter verification device is qualified according to the verification data and the verification data.
If the checking data and the verification data do not exceed the preset judgment rules and the absolute values of the two data are consistent, the checking terminal determines that the verification performance of the automatic electric energy meter verification device verification epitope is qualified, and if the checking data and the verification data exceed the preset judgment rules or the absolute values of the two data are inconsistent, the checking terminal determines that the verification performance of the automatic electric energy meter verification device verification epitope is unqualified.
The specific form of the verification data and the check data can be pulse signals, the comparison consistency is whether the waveforms of the pulse signals are consistent, and the check terminal runs the data analysis program to judge whether the verification data and the check data are consistent.
When the verification epitopes with unqualified verification performance in the automatic electric energy meter verification device exceed the preset quantity, determining that the verification performance of the automatic electric energy meter verification device is unqualified, and if the verification epitopes with unqualified verification performance do not exceed the preset quantity, determining that the verification performance of the automatic electric energy meter verification device is qualified.
Likewise, the preset number is preferably set to 1%, and if the preset number is exceeded after the floating detection data is set, the detection data is unqualified;
when the data after floating does not accord with the preset quantity 1%, recording the data after floating accords with the preset quantity as undetermined;
and when the data does not exceed the preset quantity by 1% after the data are not floated, the verification performance is qualified.
In this embodiment, a specific use experiment is performed on the method of the present application, and in a preset equal experimental environment, 3 groups of experiments are performed on 2 existing conventional methods (standard electric energy meter method and watt-second method) and the method of the present embodiment, respectively, and specific experimental results are shown in tables 1 and 2:
TABLE 1
| Group of | Existing method 1 | Existing method 2 | Method of the present embodiment |
| 1 | 47s | 33s | 19s |
| 2 | 43s | 29s | 18s |
| 3 | 45s | 35s | 18s |
| Average time consumption | 45s | 32.3s | 18.3s |
As can be seen from table 1, s is seconds, the verification judging time of the conventional method 1 is minimum 43s, and the average time is 45s; the verification judging time of the existing method 2 is 29s at minimum and the average time is 32.3s; the detection judging time of the application is 18s at minimum and the average time is 18.3s.
In addition, the maximum time delay 19s is smaller than the minimum time delay 29s of the existing method, so that the effectiveness of the method is proved, and the verification efficiency is improved.
TABLE 2
| Group of | Existing method 1 | Existing method 2 | Method of the present embodiment |
| 1 | 88.6％ | 79.6％ | 96.8％ |
| 2 | 87.8％ | 78.1％ | 98.5％ |
| 3 | 88.3％ | 83.2％ | 98.4％ |
| Average accuracy rate | 88.2％ | 80.3％ | 97.9％ |
As can be seen from table 2, the accuracy of the calibration data is 88.6% at the maximum and the average accuracy is 88.2% in the existing method 1; the maximum accuracy of the existing method 2 is 83.2%, and the average accuracy is 80.3%; the maximum accuracy of the method of the embodiment is 98.4%, and the average accuracy is 97.9%.
And the minimum accuracy rate of the method is 96.8 percent which is larger than the maximum accuracy rate of 88.6 percent of the two existing methods, and the checking accuracy rate in the method is higher than that in the traditional method, so that the method reduces the operation and maintenance management and control cost, improves the detection quality and reduces the labor cost.
The preset number is preferably set to 1%, and as can be seen from fig. 7, the detection accuracy is 98% when the preset number is >1%, and the probability is 98% -99% when the preset number exceeds 1% and a period of time passes, and the preset number condition is finally determined.
As can be seen from fig. 8, when the preset number <1%, the detection accuracy is 97%, and when the early-stage float is small, >1%, the accuracy is reduced, and a broken line appears.
As can be seen from fig. 9, when <1%, the previous accuracy is low, a broken line appears at the accuracy being 1%, and the portion >1% is relatively smooth.
The preset amount is preferably 1% as judged by the above data experimental results.
The rest of the structure is the same as that of embodiment 2.
Example 2
Referring to fig. 1, an on-line checking method of an automatic verification device for an electric energy meter is provided for a second embodiment of the present application.
And acquiring pulse data of the verification standard electric energy meter according to the verification terminal, and simultaneously acquiring pulse data of the verification epitope where the verification standard electric energy meter is located in the automatic verification device of the electric energy meter, and comparing the pulse data of the verification standard electric energy meter with the pulse data of the verification epitope so as to detect the verification epitope basically and repeatedly in error.
And when the verification data are inconsistent with the check data, the check data are used as the reference.
The checking standard electric energy meter simulates faults according to the setting of the checking terminal, stores checking data when detecting the clock measurement precision of the automatic electric energy meter calibrating device, and meanwhile, sends the checking data to the checking terminal and/or the data terminal, and the calibrating terminal uploads and stores the acquired calibrating data.
The checking terminal is also used for acquiring the verification data from the data terminal, and analyzing the verification performance of the automatic verification device of the electric energy meter according to the verification data and the verification data, namely, analyzing whether the verification performance of the automatic verification device of the electric energy meter is qualified or not by executing the data analysis program.
In the use process, the checking terminal can be used for comparing checking data and checking data of the checking epitope, if the checking data are consistent with the checking data, the checking terminal determines that the checking performance of the checking epitope of the automatic electric energy meter checking device is qualified, and if the checking data are inconsistent with the checking data, the checking terminal determines that the performance of the checking epitope of the automatic electric energy meter checking device is unqualified.
In another mode, the checking terminal can be used for analyzing whether the automatic electric energy meter calibrating device is qualified according to the checking data and the calibrating data, if the checking data and the calibrating data do not exceed a preset judging rule and the absolute values of the two pieces of data are consistent, the checking terminal determines that the calibrating performance of the automatic electric energy meter calibrating device calibrating epitope is qualified, and if the checking data and the calibrating data exceed the preset judging rule or the absolute values of the two pieces of data are inconsistent, the checking terminal determines that the calibrating performance of the automatic electric energy meter calibrating device calibrating epitope is not qualified.
The specific form of the verification data and the check data can be pulse signals, the comparison consistency is whether the electric energy converted by the pulse signals in unit time is consistent, and the check terminal runs the data analysis program to judge whether the verification data and the check data are consistent.
The checking terminal is also used for uploading the acquired checking data and verification data of the standard electric energy meter and the data of verification performance of the automatic electric energy meter verification device obtained through analysis to the data terminal and storing the data in a database of the data terminal. The data can be uploaded according to a set period, for example, daily or monthly, and the data can be uploaded to a database of the data terminal for storage, so that the data security is improved.
The checking terminal periodically acquires historical verification performance data of the automatic verification device of the electric energy meter from the data terminal, analyzes verification performance change information of verification units and verification epitopes of the automatic verification device of the electric energy meter according to the historical verification performance data, and pre-warns verification performance of the automatic verification device of the electric energy meter according to the verification performance change information.
According to the above, the verification terminal can also obtain the historical verification performance data of the automatic verification device of the electric energy meter from the data terminal periodically, a device abnormal information rule base is established, a mathematical model is established by adopting a digital twin technology, simulation is carried out according to the historical verification performance data, verification performance change information of verification units and verification epitopes of the automatic verification device of the electric energy meter is analyzed, alignment simulation is carried out according to the device abnormal information rule base corresponding to the verification performance change information, distribution conditions of abnormal points of the automatic verification device of the electric energy meter are analyzed, faults are prejudged, and early warning is carried out on verification performance of the automatic verification device of the electric energy meter.
The verification terminal is further used for setting verification parameters matched with verification tasks for the verification standard electric energy meter, so that verification data are generated by the verification standard electric energy meter based on the verification tasks, and the verification terminal is further used for displaying information of unqualified verification performance and giving an alarm if the verification performance of the automatic verification device of the electric energy meter is obtained through analysis.
The rest of the structure is the same as that of embodiment 2.
Example 3
Referring to fig. 2 and 3, a third embodiment of the present application is different from the second embodiment in that: the verification standard electric energy meter 100 is arranged on the electric energy meter automatic verification device 500; the verification terminal 200 is respectively connected with the electric energy meter automatic verification device 500 and the verification standard electric energy meter 100, and is also connected with the data terminal 400; and a checking terminal 300 connected to the checking standard electric energy meter 100 and the data terminal 400.
In comparison with embodiment 1, the verification standard electric energy meter 100 includes a fault simulation module 101 connected to the verification terminal 300 for simulating various faults according to its setting, a clock module 102 connected to the electric energy meter automatic verification device 500 for detecting the clock measurement accuracy thereof, a storage module 103 for storing verification data, and a data communication module 104 connected to the verification terminal 300 or the data terminal 400 for transmitting verification data to both.
The fault simulation module 101 is configured to simulate various faults according to the settings of the checking terminal 300, or simulate various faults according to the settings of other upper computers and handheld devices, without affecting the daily verification tasks of other electric energy meters to be verified, and perform verification according to the set verification tasks, alarm and prompt offline processing when various set simulated faults are generated, where the various faults may include error faults, start-up test faults, creep test faults, timing error faults, liquid crystal faults, constant test faults, 485 communication faults, and the like.
The clock module 102 is used for detecting the clock measurement accuracy of the automatic verification device 500 for electric energy meters, for example, DS3231SN may be used, the storage module 103 is used for storing the verification data, the storage module 103 may be used for transmitting the verification data to the verification terminal 300 or the data terminal 400 by FK-VPXKU-M8S2-32T, and the data communication module 104 may be used for transmitting the verification data to the verification terminal 300 or the data terminal 400 by RS232-4g/RS485-4g.
The checking standard electric energy meter 100 is specifically an installation type standard electric energy meter, and comprises a single-phase installation type standard electric energy meter and a three-phase installation type standard electric energy meter, the storage module 103 comprises a built-in large-capacity nonvolatile memory, a computer system of an automatic electric energy meter calibrating device can be not relied on, all meter calibrating error information is stored independently and is uploaded to the checking terminal 300 through the data communication module 104, and the checking terminal 300 can manage and compare data.
Specifically, the data communication module 104 includes an RS485 module, a bluetooth module, a Wi-Fi module, and the like, and can transmit the electric quantity, error data, and load records in the meter to related devices and a master station, and the check standard electric energy meter 100 can display the current voltage, current, power factor, and power grid frequency.
The three-phase installation type standard electric energy meter is simultaneously provided with three-phase three-wire and three-phase four-wire phenotypes, correspondingly, the three-phase installation type standard electric energy meter is also provided with a phenotype switching module, and the phenotype switching module is used for responding to the switching operation of a user through a hardware key or a virtual key to realize random switching among different phenotypes.
Further, the verification terminal 200 includes an error calculation module 201 connected to the verification standard electric energy meter 100 and the electric energy meter automation verification device 500, and a communication module 202 and a data storage module 203 disposed therein, wherein the communication module 202 includes the error calculation module 201, the communication module 202 and the data storage module 203, and the communication module 202 includes a mobile communication module 202a, a WI-FI (Wireless Fidelity) module 202b, an RS485 module 202c, an RS232 module 202d, a bluetooth module 202e and a universal serial bus (USB, universal Serial Bus) module 202f.
The error calculation module 201 includes a high-precision error calculator, and the error calculator is configured to collect high-frequency and low-frequency pulses of the electric energy meter automatic calibration device 500 and the installed standard electric energy meter, and meanwhile, can implement error detection of the electric energy meter automatic calibration device 500, and the error calculation module 201 can adopt PCIe-Packet-Switch-4P.
Specifically, the verification terminal 200 is configured to obtain pulse data of the verification standard electric energy meter 100 and pulse data of a verification epitope where the verification standard electric energy meter 100 is located in the electric energy meter automatic verification device 500, and compare the pulse data of the verification standard electric energy meter 100 and the pulse data of the verification epitope through the error calculation module 201, so as to perform basic and error repeatability detection on the verification epitope.
The communication module 202 can transmit data in a manner of mobile communication, WI-FI, RS485, RS232, bluetooth, USB and the like, and can send the data to related devices or a master station such as the data terminal 400, and then the data storage module 203 can buffer the collected data such as pulses, the communication module 202 can adopt a DSM-031, and the data storage module 203 can adopt a DT-100A.
Furthermore, the verification terminal 300 can be configured to set a verification parameter matched with the verification task of the automatic verification device 500 for the standard electric energy meter 100, so that the standard electric energy meter 100 generates the verification data based on the verification task, that is, after the verification parameter of the standard electric energy meter 100 is configured, effective verification data can be generated according to the verification task, and the specific verification parameter corresponds to the verification task.
The checking terminal 300 is further configured to periodically obtain historical verification performance data of the automatic electric energy meter verification device 500 from the data terminal 400, where the historical verification performance data includes historical records of whether verification performances of each automatic electric energy meter verification device, each verification unit on each automatic electric energy meter verification device, and each verification epitope in each verification unit are qualified, analyze verification performance change information of the verification units and verification epitopes of the automatic electric energy meter verification device 500 according to the historical verification performance data, and perform early warning on verification performances of the automatic electric energy meter verification device 500 according to the verification performance change information.
Furthermore, if the verification performance change information shows that the verification performance of the verification unit and the verification epitope is poor, for example, the accuracy is poor, early warning information is displayed on the display screen, and the verification epitope, the verification unit and the automatic verification device of the electric energy meter, which are used for prompting a user to verify that the performance is poor, are displayed.
The calibration terminal 200 can be utilized to realize error detection of the calibration epitope 501 in the automatic electric energy meter calibration device 500 through the error calculation module 201, meanwhile, data can be uploaded to the data terminal 400 through various communication ports, communication efficiency is improved, the verification terminal 300 periodically acquires historical calibration performance data of the automatic electric energy meter calibration device 500 from the data terminal 400, the calibration unit of the automatic electric energy meter calibration device 500 and calibration performance change information of the calibration epitope 501 are analyzed according to the historical calibration performance data, and early warning is carried out on the calibration performance of the automatic electric energy meter calibration device 500 according to the calibration performance change information, so that the accuracy of the calibration performance analysis of the automatic electric energy meter calibration device 500 can be improved.
The rest of the structure is the same as that of embodiment 2.
Example 4
Referring to fig. 1 to 6, a fourth embodiment of the present application is different from the third embodiment in that: the method and apparatus of the present application were used experimentally.
In comparison with embodiment 2, further, it is determined whether the verification data of the current automatic verification device 500 for electric energy meter is qualified or not according to the formula:
wherein: s (%) is an index of device stability, r i -the basic error (%) of the device at the ith measurement,-basic error r each time i N-the number of repeated measurements;
judging the stability index of the automatic electric energy meter calibrating device, taking a 0.1-level automatic electric energy meter calibrating device as an example, if s (%) is less than or equal to 0.01%, the stability index of the device is qualified, and if s (%) is more than 0.01%, the stability index of the device is unqualified.
Specific test data are shown in table 3:
TABLE 3 Table 3
Specific actual data is shown in fig. 4, and table standard table verification data are detected.
Furthermore, the existing checking method is to stop the automatic electric energy meter calibrating device 500, and perform checking in the running process by adopting modes of manual wiring, manual data recording and manual calculation, which is low in efficiency and poor in real-time performance.
Whether the checking data of the current automatic electric energy meter checking device 500 is qualified or not is judged, and the following formula is adopted:
wherein: r (%) is the device basic error value, w i -indicating electrical energy, w, of the device 0 -measuring electrical energy with reference to a standard;
calculating the basic error of an automatic calibrating device of the electric energy meter, taking the automatic calibrating device of the 0.1-level electric energy meter as an example, when the power factor is 1.0, the basic error of the device is qualified when r (%) is less than or equal to 0.1%, and when s (%) is more than 0.1%, the basic error of the device is unqualified;
the test data are shown in table 4:
TABLE 4 Table 4
Specific actual data are shown in fig. 5, and the total conclusion of the verification is judged.
Furthermore, the verification terminal 200 in the on-line verification device of the automatic verification device for the electric energy meter can implement error detection of the verification epitope 501 in the automatic verification device 500 for the electric energy meter through the error calculation module 201.
The error detection calculation formula is:
wherein: r (%) is the device basic error value, w i -indicating electricity of the deviceEnergy, w 0 -measuring electrical energy with reference to a standard;
according to the method, after counting the electric energy pulse, the conversion is carried out, wi and w0 are electric energy accumulation values in the same time period, and the longest sampling time of the electric energy accumulation values does not exceed T calculated by a formula:
wherein: t-the maximum sampling time of accumulated electric energy;
the basic error verification data are shown in table 5:
TABLE 5
The data is uploaded to the data terminal 400 through various communication ports, so that the communication efficiency is improved, the checking terminal 300 periodically acquires historical verification performance data of the automatic electric energy meter verification device 500 from the data terminal 400, the verification performance change information of the verification units and the verification epitopes 501 of the automatic electric energy meter verification device 500 is analyzed according to the historical verification performance data, and the verification performance of the automatic electric energy meter verification device 500 is early-warned according to the verification performance change information, so that the accuracy of the verification performance analysis of the automatic electric energy meter verification device 500 can be improved.
Specific actual data as shown in fig. 6, the epitope assay data of the platform was tested.
The rest of the structure is the same as that of embodiment 3.
It should be appreciated that embodiments of the application may be implemented or realized by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer readable memory. The methods may be implemented in a computer program using standard programming techniques, including a non-transitory computer readable storage medium configured with a computer program, where the storage medium so configured causes a computer to operate in a specific and predefined manner, in accordance with the methods and drawings described in the specific embodiments. Each program may be implemented in a high level procedural or object oriented programming language to communicate with a computer system. However, the program(s) can be implemented in assembly or machine language, if desired. In any case, the language may be a compiled or interpreted language. Furthermore, the program can be run on a programmed application specific integrated circuit for this purpose.
Furthermore, the operations of the processes described herein may be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The processes (or variations and/or combinations thereof) described herein may be performed under control of one or more computer systems configured with executable instructions, and may be implemented as code (e.g., executable instructions, one or more computer programs, or one or more applications), by hardware, or combinations thereof, collectively executing on one or more processors. The computer program includes a plurality of instructions executable by one or more processors.
Further, the method may be implemented in any type of computing platform operatively connected to a suitable computing platform, including, but not limited to, a personal computer, mini-computer, mainframe, workstation, network or distributed computing environment, separate or integrated computer platform, or in communication with a charged particle tool or other imaging device, and so forth. Aspects of the application may be implemented in machine-readable code stored on a non-transitory storage medium or device, whether removable or integrated into a computing platform, such as a hard disk, optical read and/or write storage medium, RAM, ROM, etc., such that it is readable by a programmable computer, which when read by a computer, is operable to configure and operate the computer to perform the processes described herein. Further, the machine readable code, or portions thereof, may be transmitted over a wired or wireless network. When such media includes instructions or programs that, in conjunction with a microprocessor or other data processor, implement the steps described above, the application described herein includes these and other different types of non-transitory computer-readable storage media. The application also includes the computer itself when programmed according to the methods and techniques of the present application. The computer program can be applied to the input data to perform the functions described herein, thereby converting the input data to generate output data that is stored to the non-volatile memory. The output information may also be applied to one or more output devices such as a display. In a preferred embodiment of the application, the transformed data represents physical and tangible objects, including specific visual depictions of physical and tangible objects produced on a display.
As used in this disclosure, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, the components may be, but are not limited to: a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of example, both an application running on a computing device and the computing device can be a component. One or more components may reside within a process and/or thread of execution and a component may be localized on one computer and/or distributed between two or more computers. Furthermore, these components can execute from various computer readable media having various data structures thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from one component interacting with another component in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).
It should be noted that the above embodiments are only for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present application may be modified or substituted without departing from the spirit and scope of the technical solution of the present application, which is intended to be covered in the scope of the claims of the present application.
Claims (10)
1. An on-line checking method of an automatic calibrating device of an electric energy meter is characterized by comprising the following steps of: comprising the steps of (a) a step of,
when a checking task is carried out, a checking standard electric energy meter is arranged on a checking epitope of an electric energy meter automatic checking device to be tested, the checking standard electric energy meter, the electric energy meter automatic checking device and a data terminal are connected to a checking terminal, the data terminal is connected with the checking standard electric energy meter and the electric energy meter automatic checking device, and the data terminal is connected with a checking terminal;
the verification terminal is controlled to acquire verification data generated by the automatic electric energy meter verification device based on the verification task, the verification terminal is used for controlling the automatic electric energy meter verification device to execute the verification task, and verification data generated by the verification standard electric energy meter based on the verification task is acquired;
and acquiring the verification data from the data terminal by using the verification terminal, judging whether the verification performance of the automatic electric energy meter verification device is qualified according to a preset judgment rule of the accurate device grading, and analyzing whether the verification performance of the automatic electric energy meter verification device is qualified according to the verification data and the verification data.
2. The method for on-line verification of an automated verification device for electric energy meters according to claim 1, wherein: and obtaining the verification data of the verification epitope and the verification data according to the verification terminal for analysis, wherein the method comprises the following steps of:
whether the check data and the verification data exceed preset judging rules or not;
whether the check data is consistent with the verification data;
and if the check data and the verification data do not exceed a preset judgment rule and the absolute values of the two data are consistent, determining that the verification performance of the verification epitope is qualified, and if the check data and the verification data exceed the preset judgment rule or the absolute values of the two data are inconsistent, determining that the verification performance of the verification epitope is unqualified.
3. The method for on-line verification of an automated verification device for electric energy meters according to claim 2, wherein: acquiring pulse data of the checking standard electric energy meter according to the checking terminal;
simultaneously acquiring pulse data of an inspection epitope where the inspection standard electric energy meter is located in the electric energy meter automatic inspection device;
and comparing the pulse data of the checking standard electric energy meter with the pulse data of the verification epitope to detect the verification epitope basically and repeatedly in error.
4. The method for on-line verification of an automated verification device for electric energy meters according to claim 2 or 3, wherein: and when the verification epitopes with unqualified verification performance in the automatic electric energy meter verification device exceed a preset number, determining that the verification performance of the automatic electric energy meter verification device is unqualified.
5. The method for on-line verification of an automated verification device for electric energy meters of claim 4, wherein: the checking standard electric energy meter simulates faults according to the setting of the checking terminal, and stores the checking data when detecting the clock measurement precision of the electric energy meter automatic verification device;
meanwhile, the checking standard electric energy meter sends the checking data to the checking terminal and/or the data terminal;
and uploading and storing the acquired verification data by the verification terminal.
6. The method for on-line checking of an automatic verification device for electric energy meters according to any one of claims 1 to 3 and 5, characterized in that: uploading the obtained checking data, verification data and data of verification performance of the automatic verification device of the electric energy meter obtained through analysis to a database of the data terminal according to a set period for storage;
the verification terminal periodically acquires historical verification performance data of the automatic electric energy meter verification device from the data terminal, establishes a device abnormality information rule base, establishes a mathematical model by adopting a digital twin technology, performs simulation according to the historical verification performance data, analyzes verification performance change information of the verification units and verification epitopes of the automatic electric energy meter verification device, performs alignment simulation according to the device abnormality information rule base corresponding to the verification performance change information, analyzes distribution conditions of abnormal points of the automatic electric energy meter verification device, pre-judges faults, and pre-warns verification performance of the automatic electric energy meter verification device.
7. The method for on-line verification of an automated verification device for electric energy meters of claim 6, wherein: the verification terminal is further used for setting verification parameters matched with the verification tasks for the verification standard electric energy meter, so that the verification standard electric energy meter generates verification data based on the verification tasks;
and the checking terminal is also used for displaying information of unqualified verification performance and giving an alarm if the verification performance of the automatic verification device of the electric energy meter is obtained through analysis.
8. An on-line checking device of an automatic electric energy meter calibrating device is characterized in that: an on-line verification method for implementing an automated verification device for electrical energy meters as defined in any one of claims 1 to 7, comprising,
checking a standard electric energy meter (100), which is arranged on an electric energy meter automatic verification device (500);
the verification terminal (200) is respectively connected with the electric energy meter automatic verification device (500) and the verification standard electric energy meter (100) and is also connected with the data terminal (400);
and a check terminal (300) which connects the check standard electric energy meter (100) and the data terminal (400).
9. The on-line verification device of an automated verification apparatus for electrical energy meters of claim 8, wherein: the standard electric energy meter (100) comprises a fault simulation module (101) connected with the checking terminal (300) and used for simulating various faults according to the setting of the fault simulation module, a clock module (102) connected with the automatic electric energy meter verification device (500) and used for detecting the clock measurement precision of the automatic electric energy meter verification device, a storage module (103) used for storing checking data, and a data communication module (104) connected with the checking terminal (300) or the data terminal (400) and used for sending the checking data to the checking terminal or the data terminal;
the verification terminal (200) comprises an error calculation module (201) connected with the verification standard electric energy meter (100) and the electric energy meter automatic verification device (500), and a communication module (202) and a data storage module (203) which are arranged in the error calculation module.
The data terminal (400) is provided with a database (401), so that the verification terminal (400) can conveniently upload verification data to the database (401) for storage;
the automatic electric energy meter calibrating device (500) is provided with a calibrating epitope (501), and the checking standard electric energy meter (100) is arranged on the calibrating epitope (501).
10. A computer-readable storage medium storing computer-executable instructions, characterized by: the computer executable instructions, when executed by a processor, implement an on-line verification method for an automated verification device for electrical energy meters according to any one of claims 1 to 7.
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