A load priority control 645 table reading method, a collection terminal and a medium

Abstract

The present application relates to the technical field of electric energy meter, and specifically provides a load priority control 645 meter reading method, a collection terminal and a medium, the method comprising: obtaining the historical reading record of the 645 protocol electric energy meter within a preset time; determining the recommended priority of the new load and the old load data of the current electric energy meter reading based on the historical reading record; performing the reading task of the 645 protocol electric energy meter according to the recommended priority and recording the reading result; if the number of reading failures within two consecutive preset times exceeds a preset threshold, the recommended priority is switched to a fixed priority. The present application can automatically optimize the priority according to the historical reading performance of the load, reduce manual intervention, and improve the intelligent level of reading.

Description

Technical Field

[0001] This invention belongs to the field of electricity meter technology, and particularly relates to a method for reading 645 meters with load priority control, a data acquisition terminal and medium. Background Technology

[0002] Energy meters conforming to the 645 protocol are crucial metering devices in power systems. With the continuous advancement of smart grid construction, energy meters are no longer limited to traditional electricity billing but are widely used in advanced applications such as load analysis, electricity consumption behavior identification, line loss calculation, and demand response, placing higher demands on the real-time performance, completeness, and accuracy of data. Currently, energy meters primarily interact with data acquisition terminals through communication interfaces such as HPLC and RS-485.

[0003] However, in actual operation, the reading efficiency of existing electricity meters is low. Under different electricity usage scenarios and data requirements, it cannot flexibly control the reading priority of new and old loads, resulting in reading efficiency failing to meet demands. This prevents power departments from obtaining meter data in a timely manner, affecting the timeliness of subsequent electricity billing and electricity monitoring. Furthermore, existing technologies use a uniform reading cycle design for different types of meters, failing to consider the differences between different meters, leading to low reading success rates and insufficient data accuracy for some meters. To improve the reading success rate, the system often relies on a repetitive reading mechanism, i.e., retrying multiple times for meters that do not respond or fail to respond. This passive rereading not only significantly prolongs the data acquisition cycle across the entire distribution area and increases time costs, but also exacerbates HPLC channel congestion, causing a serious waste of communication resources, further affecting the data transmission of other normal meters, creating a vicious cycle. Although existing technologies attempt to optimize reading through fixed cycle adjustments, the adjustments lack flexibility and cannot fundamentally solve the above problems. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides a method for reading 645 meters with load priority control, comprising the following steps: Step S1: Obtain the historical reading records of the 645 protocol energy meter within a preset time period; Step S2: Based on the historical meter reading records, determine the recommended priority of new load and old load data during the current electricity meter reading; Step S3: Perform the reading task of the 645 protocol energy meter according to the recommended priority, and record the reading results; Step S4: If the number of failed copying attempts exceeds a preset threshold within two consecutive preset time periods, the recommended priority is switched to a fixed priority.

[0005] In this embodiment, the method for determining the recommendation priority in step S2 is as follows: S2.1: Based on the historical meter reading records, mark the 645 protocol electricity meter according to the data type of the electricity meter successfully read within a preset time period. The data type includes old load data and new load data. S2.2: Determine the recommended priority of new and old load data when reading the current electricity meter according to the markings on the electricity meter in the 645 specification.

[0006] Based on the above scheme, the specific method for marking the 645 protocol energy meter is as follows: S2.11: Calculate the historical read success rate for new load and old load respectively, wherein the historical read success rate = number of successful reads / total number of read attempts; S2.12: Obtain the number of times the data type is switched within a preset period and calculate the switching frequency; specifically including: S2.13: The impact of the switching frequency on the confidence level is measured by introducing a preset stability penalty coefficient; S2.14: Set a sensitivity threshold based on the confidence score and mark the electricity meter; According to another embodiment, the method further includes: Step S5: Determine the meter type of the 645 protocol energy meter, and match the corresponding polling reading method according to the meter type. The meter type includes single-phase meters and three-phase meters.

[0007] Furthermore, the method for determining the table type in step S5 is as follows: S5.1: Determine whether the agreement specifies a user type; S5.2: If a user type is specified, the meter type of the 645 protocol energy meter is determined by the user type; if not specified, the meter type of the 645 protocol energy meter is determined by obtaining the phase line system from the meter file.

[0008] Based on the above scheme, the polling and reading method includes: If the table type is a single-phase table, the single-phase table is read in a polling and reading manner according to the new phase and the old load. If the table type is a three-phase table, the three-phase table is read in a round-robin manner according to the new load and the old load. If the table type cannot be determined, the table will be read in a round-robin fashion according to new load, old load, and new phase.

[0009] According to another embodiment, the 645 protocol energy meter is read in different ways depending on the type of the reading task, specifically including: Determine the type of the copying task; If the copying task is a real-time data transfer task, real-time data is copied in the first, second, or third round of the copying cycle, and the real-time data is stored in the database. If the reading task is a curve supplementation task, the real-time round reading of the 645 protocol energy meter is removed.

[0010] Based on the same inventive concept, the present invention provides a data acquisition terminal, comprising: The marking module is used to mark the 645 protocol energy meter based on historical reading records and according to the data type of the energy meter successfully read within a preset time. The data type includes old load data and new load data. The priority determination module is used to determine the recommended priority of new load and old load data when reading the current energy meter based on the markings on the 645 standard energy meter. The meter reading task execution module is used to execute the meter reading task of the 645 protocol energy meter according to the recommended priority and record the meter reading results; If the number of failed copying attempts exceeds a preset threshold within two consecutive preset time periods, the priority switching module will switch the recommended priority to a fixed priority. Furthermore, the recommendation priority determination module includes: The marking module is used to mark the 645 protocol energy meter based on the historical reading records and according to the data type of the energy meter successfully read within a preset time. The priority generation module is used to determine the recommended priority of new and old load data when reading the current electricity meter based on the markings on the 645 standard electricity meter.

[0011] The present invention also provides a computer-readable storage medium having a computer program, which, when executed by a processor, implements the steps of the 645 table copying method for load priority control as described above.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. This application adopts a priority dynamic adjustment method based on memory function, which can automatically adjust the copying priority according to the historical copying records of the load, improve the automation level of copying, and significantly improve the copying efficiency by switching priorities; 2. This application also improves copying efficiency and success rate by determining the table type and matching the corresponding polling copying method according to different table types; 3. By designing differentiated task rounds, precise copying is achieved to meet the needs of different tasks, further ensuring the accuracy and efficiency of data copying. Attached Figure Description

[0013] Figure 1 This is the overall flowchart of the method for copying Form 645 of this application; Figure 2 This is a flowchart illustrating the priority switching process in this application; Figure 3 This is a flowchart of the meter reading process in Embodiment 2 of this application. Detailed Implementation

[0014] The invention will be further described below with reference to specific embodiments, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the invention, and should not be construed as limiting the invention.

[0015] Existing meter reading schemes, in order to ensure versatility, generally adopt a fixed reading cycle for data collection. While this method is highly adaptable, it lacks specificity and flexibility in the differentiated operating environments of different transformer substations. For example, some single-phase meters do not support new load data items. If the meter is read sequentially according to a uniform reading cycle (new load - old load - new phase), it may not be possible to read the data until the second cycle, which indirectly increases the reading time. In transformer substations with a large number of meters, the accumulated delay may cause the reading task to fail to be completed within the specified cycle, resulting in data loss. To address the above problems encountered in actual meter reading, this invention provides a 645 meter reading method, data acquisition terminal, and medium based on load priority control.

[0016] Example 1 like Figure 1 and Figure 2 As shown, this embodiment provides a method for reading 645 meters with load priority control. The method includes the following steps: Step S1: Obtain the historical reading records of the 645 protocol energy meter within a preset time period; In this embodiment, step S1 specifically includes: S1.1: At the end of each reading cycle, record the data type of the electricity meter that was successfully read. The data type of the electricity meter includes new load data and old load data. S1.2: Within a preset time period T, the number of successful readings of new load data and old load data, as well as the number of data type switching times when reading the energy meter, are recorded.

[0017] In this embodiment, time T is 2:30-3:00 AM daily. This time avoids peak electricity and communication periods, thus preventing increased load on the data acquisition terminal due to improper resource allocation and reducing interference with critical tasks such as real-time meter reading and event reporting. The preset time is the day before time T, that is, the day before 2:30-3:00 AM daily. At this time, all reading cycles for that day have ended, allowing for statistical analysis of the day's reading data.

[0018] Step S2: Based on the historical meter reading records, determine the recommended priority of new load and old load data during the current electricity meter reading; This embodiment determines the recommended priority for meter reading by marking the electricity meter, thereby reducing the meter reading time and improving the meter reading efficiency. Step S2 specifically includes the following steps: S2.1: Based on the historical reading records in step S1, mark the 645 protocol energy meter according to the data type of the energy meter successfully read within a preset time. According to one implementation of this embodiment, S2.1 marks the 645 protocol energy meter by calculating the confidence level, specifically as follows: S2.11: Calculate the historical read success rate for new load and old load respectively, wherein the historical read success rate = number of successful reads / total number of read attempts; In this embodiment, the specific calculation method for the success rate of copying includes: S2.111: Obtain the total number of attempts to read the new load data within a preset time, N_new, the number of successful reads of the new load data, S_new, and the success rate of reading the new load data, Rate_new = S_new / N_new, where N_new is not 0; S2.112: Get the total number of attempts to read old load data within a preset time as N_old, the number of successful old load data reads as S_old, and the old load data reading success rate Rate_old = S_old / N_old, where N_old is not 0.

[0019] S2.12: Obtain the number of times the data type is switched within a preset period and calculate the switching frequency; specifically including: Obtain historical copying records within a preset time period, and calculate the switching frequency R=C_switch / T based on the number of times the data type of successfully copied data changes within two adjacent copying cycles, where C_switch is the number of switching cycles and T is the total number of copying cycles.

[0020] S2.13: The impact of the switching frequency on the confidence level is measured by introducing a preset stability penalty coefficient; S2.13 of this embodiment includes: S2.131: Calculate the confidence score of the new load data: Score_new = Rate_new * (1 - α * R); S2.132: Calculate the confidence score of the old load data: Score_old = Rate_old * (1 - α * R), where α is the stability penalty coefficient, 0 < α ≤ 1.

[0021] It should be noted that, according to the confidence score calculation method, the higher the switching frequency, the lower the confidence score, indicating greater instability.

[0022] S2.14: Set a sensitivity threshold based on the confidence score and mark the electricity meter; S2.14 of this embodiment specifically includes: S2.141: If Score_new - Score_old > β, then mark the energy meter as "new load priority"; S2.142: If Score_old - Score_new > β, then mark the electricity meter as "old load priority"; S2.143: If |Score_new - Score_old| ≤ β, then mark the electricity meter as "no significant preference" and use the system's default reading priority, where β is the sensitivity threshold and β≥0.

[0023] Step S2.1 of this embodiment, through quantitative calculation that integrates both success rate and stability factors, enables a more scientific evaluation of the energy meter's response characteristics to two data types. For energy meters with high reading success rates and stable status, a clear priority label is assigned; for energy meters with large status fluctuations or similar success rates for both types, a conservative default strategy is adopted, thereby improving overall reading efficiency and success rate.

[0024] In this embodiment, the electricity meter is marked by the number of successful data readings and the switching frequency within a preset time. The electricity meter is read first according to the marked data type, thereby avoiding invalid attempts, shortening the electricity meter reading cycle, and reducing the data loss caused by the failure of the first round of reading when there are too many electricity meters in the distribution area.

[0025] S2.2: Determine the recommended priority for new load and old load data when reading the current electricity meter according to the marking of the electricity meter in the 645 protocol. The specific electricity meter type and the corresponding reading priority are as follows: when the electricity meter is marked as a new load, the recommended priority is "new load-old load"; when the electricity meter is marked as an old load, the recommended priority is "old load-new load".

[0026] According to another embodiment, step S2 determines the recommendation priority by establishing a load reading efficiency model based on historical reading records. The specific steps for determining the recommendation priority by the load reading efficiency model include: Based on the historical data transfer records, which include the type of load successfully transferred at each time and the corresponding number of successful transfers, performance scores for new and old loads at different times are obtained from the historical data transfer records, and recommended priorities are output based on the performance scores.

[0027] Step S3: Perform the meter reading task of the 645 protocol energy meter according to the recommended priority, and record the reading results.

[0028] In this embodiment, step S3 executes the meter reading task according to the recommended priority in step S2 above. When the meter is marked as an old load, it is read directly as an old load. If a fixed round of "new load-old load-new phase" meter reading is performed, the meter's data may only be successfully collected in the second round. However, by using the recommended priority for meter reading, the probability of successful reading in the first round is greatly increased, thereby improving the meter reading efficiency and saving the time added by re-reading the data.

[0029] Step S4: Based on the reading results in step S3, if the proportion of reading failures to total readings exceeds a preset threshold within two consecutive preset time periods, the recommended priority is switched to fixed priority, and the 645 protocol energy meter is read with fixed priority.

[0030] Step S4 in this embodiment adds a fault-tolerance mechanism to the electricity meter reading process. This addresses abnormal situations that may occur during reading based on the recommended priority generated from historical record markings, such as changes in the meter or communication environment that render historical data inapplicable to the current area's meters. By switching to a fixed priority, the stability of the reading process is improved. The preset threshold can be adjusted as needed; in this embodiment, it is set to 70%.

[0031] Considering the operational needs of on-site transformer area administrators (such as temporarily adding new electricity meters with different compatibility or replacing a large number of electricity meters with other protocols), on-site personnel lack convenient operation interfaces and cannot switch to the appropriate reading strategy in a timely manner, and still use the original reading method for data collection, resulting in low efficiency of this solution.

[0032] Therefore, in order to facilitate on-site personnel to flexibly adjust the meter reading strategy according to the actual operating environment, the 645 meter reading method in this embodiment also includes: switching the reading priority through the new and old load priority reading control switch, and reading the 645 protocol energy meter of the distribution area according to the switched reading priority; specifically, the new and old load priority reading control switch is added to the hidden menu of the operable display interface of the acquisition terminal, and the reading priority is manually switched, and the new load and old load reading priority is flexibly switched through the control switch.

[0033] It should be noted that the new and old load priority reading control switch added in this embodiment is used to control the reading priority of the electricity meters in the entire distribution area, and is applicable to the situation where the reading of the entire distribution area is not good.

[0034] Based on the same technical concept, the present invention also provides a data acquisition terminal, comprising: The marking module is used to mark the 645 protocol energy meter based on historical reading records and according to the data type of the energy meter successfully read within a preset time. The data type includes old load data and new load data. The priority determination module is used to determine the recommended priority of new load and old load data when reading the current energy meter based on the markings on the 645 standard energy meter. The meter reading task execution module is used to execute the meter reading task of the 645 protocol energy meter according to the recommended priority and record the meter reading results; If the number of failed copying attempts exceeds a preset threshold within two consecutive preset time periods, the priority switching module will switch the recommended priority to a fixed priority. Furthermore, the recommendation priority determination module includes: The marking module is used to mark the 645 protocol energy meter based on the historical reading records and according to the data type of the energy meter successfully read within a preset time. The priority generation module is used to determine the recommended priority of new and old load data when reading the current electricity meter based on the markings on the 645 standard electricity meter.

[0035] The specific embodiments of the data acquisition terminal in this application refer to the embodiments of the 645 table reading method for load priority control described above, and will not be repeated here.

[0036] Example 2 This embodiment provides a method for reading 645 tables with load priority control. The method is the same as in Embodiment 1, except that this embodiment adds a table type determination method. By adapting the reading method to different table types, it accommodates different table characteristics, making the reading more targeted. For example... Figure 3 As shown, the method includes: Step S5: Determine the meter type of the 645 protocol energy meter, and match the corresponding polling reading method according to the meter type. The meter type includes single-phase meters and three-phase meters.

[0037] The method for determining the table type in step S5 is as follows: S5.1: Determine whether the agreement specifies a user type; Step S5.1 is used to identify specific user types as stipulated by certain provinces, specifically through the concentrator or data acquisition terminal protocol to identify user types.

[0038] S5.2: If the agreement specifies a user type, the meter type of the 645 protocol energy meter shall be determined directly by the user type; If not specified in the agreement, the type of the 645 standard energy meter is determined by obtaining the phase wiring system from the meter file. The phase wiring system includes single-phase, three-phase three-wire, and three-phase four-wire. Single-phase is a single-phase meter, and three-phase three-wire or three-phase four-wire is a three-phase meter.

[0039] The above steps are used to obtain the meter type of the electricity meter. Based on the meter type, a corresponding polling reading method is matched. The polling reading method includes: If the table type is a single-phase table, the single-phase table is read in a polling manner according to the new phase and the old load. If the table type is a three-phase meter, the three-phase meter is read in a round-robin fashion according to the new load and the old load. If the table type cannot be determined, the table will be read in a round-robin fashion according to new load, old load, and new phase.

[0040] According to this embodiment, by directly setting different polling and reading methods for single-phase meters and three-phase meters respectively, it is possible to better match the characteristics of different types of meters and improve reading efficiency.

[0041] Furthermore, in order to accurately read the meter readings according to the needs of different tasks, this embodiment applies different reading methods to the 645 protocol energy meter based on the type of reading task, specifically including: Determine the type of the copying task. The type of copying task includes ordinary frozen curve task, real-time transferred curve task, and the corresponding recopying curve task when ordinary curve task and real-time transferred curve task fail to copy.

[0042] If the copying task is a real-time data transfer task, the first, second, or third round of the copying cycle can be changed to copy real-time data, and the real-time data can be stored in the database. In this embodiment, most tables that support new phase divisions also support new loads, and tables that do not support new loads generally do not have a real-time transfer curve task requirement. Therefore, by replacing new phase divisions with real-time transfer, the real-time transfer curve task reads data in the order of "new load - old load - real-time". When executing the reading task, data at points 1, 2, 3, and 4 are read. At this time, the data at point 2 has not been read by the new load and has not been read by the old load, so in the third round, the real-time data is directly read and stored in the database.

[0043] If the reading task is a curve rereading task, the curve rereading task corresponds to the frozen data points that were not read by the normal frozen curve and the data points that were not read by the real-time transfer curve task. For the curve rereading task, since the real-time transfer curve task reads the current real-time data, while the curve rereading task reads the data that is no longer real-time, the curve rereading task needs to remove the real-time cycle and only read the 645 protocol energy meter with new load, old load or new phase.

[0044] Through the differentiated task round design described in this embodiment, precise copying is performed to meet the needs of different tasks, further ensuring the accuracy and efficiency of data copying.

[0045] Furthermore, the 645 table copying method according to the present invention can be recorded in a computer-readable recording medium. Specifically, according to the present invention, a computer-readable recording medium storing computer-executable instructions can be provided, which, when executed by a processor, causes the processor to perform the 645 table copying method as described above.

[0046] It should be noted that the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, program segment, or portion of code containing at least one executable instruction for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0047] In general, various exemplary embodiments of the present invention can be implemented in hardware or dedicated circuitry, software, firmware, logic, or any combination thereof. Some aspects can be implemented in hardware, while others can be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device. When aspects of embodiments of the present invention are illustrated or described as block diagrams, flowcharts, or represented using certain other images, it will be understood that the blocks, apparatuses, systems, techniques, or methods described herein can be implemented as non-limiting examples in hardware, software, firmware, dedicated circuitry or logic, general-purpose hardware or controllers or other computing devices, or certain combinations thereof.

[0048] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0049] While the specific embodiments of the present invention have been described above, they are not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A method for reading 645 meters with load priority control, characterized in that, Includes the following steps: Step S1: Obtain the historical reading records of the 645 protocol energy meter within a preset time period; Step S2: Based on the historical meter reading records, determine the recommended priority of new load and old load data during the current electricity meter reading; Step S3: Perform the reading task of the 645 protocol energy meter according to the recommended priority, and record the reading results; Step S4: If the number of failed copying attempts exceeds a preset threshold within two consecutive preset time periods, the recommended priority is switched to a fixed priority.

2. The method for reading 645 meters with load priority control according to claim 1, characterized in that, The method for determining the recommendation priority in step S2 is as follows: S2.1: Based on the historical meter reading records, mark the 645 protocol electricity meter according to the data type of the electricity meter successfully read within a preset time period. The data type includes old load data and new load data. S2.2: Determine the recommended priority of new and old load data when reading the current electricity meter according to the markings on the electricity meter in the 645 specification.

3. The method for reading 645 meters for load priority control according to claim 2, characterized in that, The specific method for marking the 645 protocol energy meter is as follows: S2.11: Calculate the historical read success rate for new load and old load respectively, wherein the historical read success rate = number of successful reads / total number of read attempts; S2.12: Obtain the number of times the data type of the copying data is switched within a preset period, and calculate the switching frequency; S2.13: The impact of the switching frequency on the confidence level is measured by introducing a preset stability penalty coefficient; S2.14: Set a sensitivity threshold based on the confidence score and mark the electricity meter.

4. The method for reading 645 meters for load priority control according to claim 1, characterized in that, The method further includes: Step S5: Determine the meter type of the 645 protocol energy meter, and match the corresponding polling reading method according to the meter type. The meter type includes single-phase meters and three-phase meters.

5. The method for reading 645 meters for load priority control according to claim 4, characterized in that, The method for determining the table type in step S5 is as follows: S5.1: Determine whether the agreement specifies a user type; S5.2: If a user type is specified, the meter type of the 645 protocol energy meter is determined by the user type; if no user type is specified, the meter type of the 645 protocol energy meter is determined by obtaining the phase line system of the meter file.

6. The method for reading 645 meters for load priority control according to claim 5, characterized in that, The polling and copying method includes: If the table type is a single-phase table, the single-phase table is read in a polling and reading manner according to the new phase and the old load. If the table type is a three-phase meter, the three-phase meter is read in a round-robin fashion according to the new load and the old load. If the table type cannot be determined, the table will be read in a round-robin fashion according to new load, old load, and new phase.

7. The method for reading 645 meters for load priority control according to claim 1, characterized in that, The 645 protocol energy meter is read in different ways according to the type of reading task, specifically including: Determine the type of the copying task; If the copying task is a real-time data transfer task, real-time data is copied in the first, second, or third round of the copying cycle, and the real-time data is stored in the database. If the reading task is a curve supplementation task, the real-time round reading of the 645 protocol energy meter is removed.

8. A data acquisition terminal, characterized in that, include: The marking module is used to mark the 645 protocol energy meter based on historical reading records and according to the data type of the energy meter successfully read within a preset time. The data type includes old load data and new load data. The priority determination module is used to determine the recommended priority of new load and old load data when reading the current energy meter based on the markings on the 645 standard energy meter. The meter reading task execution module is used to execute the meter reading task of the 645 protocol energy meter according to the recommended priority and record the meter reading results; If the number of failed copying attempts exceeds a preset threshold within two consecutive preset time periods, the priority switching module will switch the recommended priority to a fixed priority.

9. The data acquisition terminal according to claim 8, characterized in that, The recommendation priority determination module includes: The marking module is used to mark the 645 protocol energy meter based on the historical reading records and according to the data type of the energy meter successfully read within a preset time. The priority generation module is used to determine the recommended priority of new and old load data when reading the current electricity meter based on the markings on the 645 standard electricity meter.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium has a computer program that, when executed by a processor, implements the 645 table reading method for load priority control as described in any one of claims 1-7.

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