Electric energy meter load data additional recording method

Abstract

The invention discloses an electric energy meter load data additional recording method comprising the following steps: determining the last power failure time T1 and the current time T2 of an electric energy meter; and determining a load data additional recording strategy based on the power failure time T1, the current time T2 and the load period Tm. Specifically, if the power failure time T1 and the current time T2 are within a load period Tm, load data additional recording is not carried out; if the power failure time T1 and the current time T2 are not in the same load period Tm, load data additional recording is carried out. According to the additional recording method for the load data of the electric energy meter, the low-power-consumption equipment can judge whether the file is the upgrading file of the low-power-consumption equipment or not according to the file information, the low-power-consumption equipment can check the integrity of the file, and if the file is complete, upgrading is started without waiting for a gateway to query the integrity of the file, so that the waiting time is saved, namely the power consumption is saved.

Description

Technical Field

[0001] The present invention specifically relates to a method for supplementing the load data of an electric energy meter. Background Art

[0002] Load record refers to the continuous recording of various load variable data (such as voltage, current and power) at the power consumption site at certain time intervals (such as 1 minute, 5 minutes, 10 minutes, etc.) and data structures. According to the data of load record, a curve can be drawn in chronological order, which can intuitively show the instantaneous quantity changes and power usage, which is convenient for power bureau staff to monitor and control the load, and also plays an indelible role in power dispatch and power system planning. Therefore, load record is one of the necessary functions of current smart meters. The accuracy and completeness of the load curve are particularly important.

[0003] The integrity of the load curve is mainly reflected in the case of power outage and power on of the energy meter. Whether the load curve under power outage can be fully recorded is a difficulty and key point in the design of smart meters. When the power outage time is long and spans multiple load cycles, the existing technology handles it as follows:

[0004] Method 1: Only one load curve is recorded after power-on. This makes the entire load record look incomplete and discontinuous in time, which is not convenient for power bureau staff to analyze data.

[0005] Method 2: Supplement all load curves at once when power is turned on. When there are many load curves, it takes a long time to supplement them. The meter cannot measure normally during the recording process, causing losses to the power bureau. And because the instantaneous quantity during the power outage is 0, the power data will not change, so many of the supplemented load records will be the same, which will cause a great waste of storage resources. Summary of the invention

[0006] The present invention provides a method for supplementing the load data of an electric energy meter to solve the above-mentioned technical problems, and specifically adopts the following technical solutions:

[0007] A method for supplementing the recording of load data of an electric energy meter, comprising:

[0008] Determine the last power outage time T1 of the electric energy meter and the current time T2;

[0009] The load data supplementary recording strategy is determined based on the power outage time T1, the current time T2 and the load cycle Tm.

[0010] Furthermore, the specific method for determining the load data supplementary recording strategy based on the power outage time T1, the current time T2 and the load cycle Tm is:

[0011] If the power outage time T1 and the current time T2 are within the same load cycle Tm, no additional load data recording is performed;

[0012] If the power outage time T1 and the current time T2 are not within the load cycle Tm, the load data is supplemented.

[0013] Furthermore, if the power outage time T1 and the current time T2 are not within the load cycle Tm, the number of load data items that need to be supplemented is calculated based on the power outage time T1, the current time T2 and the load cycle Tm.

[0014] Furthermore, the specific method for calculating the number of data items to be supplemented according to the power outage time T1, the current time T2 and the load cycle Tm is:

[0015] The number of load record time points between the power outage time T1 and the current time T2 is calculated, and is used as the number of data items that need to be supplemented.

[0016] Further, after determining the number of data items that need to be supplemented, a load curve is generated according to a predetermined format and stored in a load curve storage area.

[0017] Furthermore, the load curve includes a time segment, a repetition number segment, and a load record object value segment.

[0018] Furthermore, after the load curve is stored in the load curve storage area, the load record management area pointer is updated, and the total number of load records, the load record pointer and the matching read pointer are changed accordingly according to a predetermined format.

[0019] Furthermore, before calculating the time difference between the power outage time T1 and the current time T2, the electric energy meter load data supplementary recording method further comprises:

[0020] Determine whether the power outage time T1 is earlier than the current time T2;

[0021] If the power outage time T1 is earlier than the current time T2, then executing the subsequent step of calculating the time difference between the power outage time T1 and the current time T2;

[0022] If the power outage time T1 is later than the current time T2, the data is determined to be abnormal and the process ends.

[0023] Furthermore, the power outage data of all electric energy meters in a certain area are counted to calculate the power outage index of the area;

[0024] The load period Tm of the electric energy meter in the area is adjusted according to the power outage index.

[0025] Furthermore, when the power outage index is greater than a preset threshold, the load cycle Tm is set to a first preset value, and when the power outage index is less than or equal to the preset threshold, the load cycle Tm is set to a second preset value, and the second preset value is greater than the first preset value.

[0026] The benefit of the present invention lies in the provided method for supplementing the load data of an electric energy meter, which only requires supplementing one load curve after a power outage to complete all data without repeated recording, thus saving storage space and greatly reducing the cost of the electric energy meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0028] Figure 1 It is a schematic diagram of a method for supplementing the recording of load data of an electric energy meter according to the present invention;

[0029] Figure 2 is a schematic diagram of a recording format of a load curve of the present invention;

[0030] Figure 3 is a schematic diagram of the data content format of the load record management area of ​​the present invention; DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0032] The present application discloses a method for supplementing the recording of load data of an electric energy meter, comprising:

[0033] S1: Determine the last power outage time T1 and the current time T2 of the electric energy meter. Specifically, the electric energy meter is powered on, and the power outage time T1 stored when the electric energy meter last powered off is read from the EEPROM, and the current time T2 of the electric energy meter is read from the RAM.

[0034] S2: Determine the load data supplementary recording strategy based on the power outage time T1, the current time T2 and the load cycle Tm.

[0035] In this application, the specific method for determining the load data supplementary recording strategy based on the power outage time T1, the current time T2 and the load cycle Tm is:

[0036] If the power outage time T1 and the current time T2 are within a load cycle Tm, no additional load data recording is performed. The electric energy meter performs normal measurement, and the load curve supplementary recording process ends. For example: T1 is 16:53 on July 19, 2024, T2 is 16:58 on July 19, 2024, Tm is 10 minutes, and T1 and T2 are within a load cycle. At this time, no additional load data is required.

[0037] If the power outage time T1 and the current time T2 are not within a load cycle Tm, the load data is supplemented.

[0038] In an implementation manner of the present application, if the power outage time T1 and the current time T2 are not within a load cycle Tm, the number of load data items that need to be supplemented is calculated based on the power outage time T1, the current time T2 and the load cycle Tm.

[0039] Specifically, the specific method for calculating the number of data items to be supplemented according to the power outage time T1, the current time T2 and the load cycle Tm is:

[0040] For example, assuming that T1 is 14:53 on July 19, 2024, T2 is 16:38 on July 19, 2024, Tm is 10 minutes, and the total power outage is 105 minutes, spanning the following 10 load recording time points: 15:00, 15:10, 15:20, 15:30, 15:40, 15:50, 16:00, 16:10, 16:20, and 16:30. Therefore, the total number of load curves that need to be supplemented is 105 minutes rounded to 10, and a total of 10 load curves need to be supplemented.

[0041] In the implementation mode of the present application, after determining the number of data items to be supplemented, a load curve is generated according to a predetermined format and stored in a load curve storage area. Figure 2 As shown in the attached Figure 2 The record format of each load curve in the load curve is generated and stored in the load curve storage area. The load curve contains a time segment, a repeated number segment and a load record object value segment. Specifically, the load curve content is: 2024072015000010XXXX……XXXX, where 202407201500 is a 6-byte time, year, month, day, hour and minute. 0010 is a 2-byte repeated number. XXXX……XXXX is the value of the configured load record object.

[0042] In the implementation of the present application, after the load curve is stored in the load curve storage area, the load record management area pointer is updated, and the total number of load records, the load record pointer and the load read pointer are changed accordingly according to the predetermined format. Figure 3The data content format of the load record management area updates the load record management area. The total number of load records plus the number of duplicates 10, the load record pointer increases by 1, the load read pointer increases by 1, and it is stored in RAM when powered on, and transferred to EEPROM when power is off.

[0043] When reading the load, start reading directly from the earliest record in the FLASH. When the number of repeated records in the load record is not 1, upload according to multiple load records. The time of each load record is calculated based on the recorded load record according to the record interval. For example, in the above steps, the number of repeated records in the supplemented load record is 10. When this load record is read, it needs to be expanded and uploaded according to 10 records, and the time is recursively calculated based on 202407201500 at 10-minute intervals.

[0044] Through the method for supplementing the load data of the electric energy meter of the present application, only one record is needed to complete all the data, and the data is compressed and stored without repeated records, thus saving storage space and reducing the cost of the electric energy meter. Moreover, the supplementing process is fast and will not affect other functions of the electric energy meter such as measurement and communication.

[0045] As a preferred implementation, before calculating the time difference between the power outage time T1 and the current time T2, the method for supplementing the load data of the electric energy meter further includes:

[0046] Determine whether the power outage time T1 is earlier than the current time T2. If the power outage time T1 is earlier than the current time T2, then perform the subsequent step of calculating the time difference between the power outage time T1 and the current time T2. If the power outage time T1 is later than the current time T2, then determine that the data is abnormal and end the process.

[0047] It is understandable that the last power outage time T1 recorded should be earlier than the current time. If the power outage time T1 is later than the current time T2, it indicates that the electric energy meter has a fault, and the data supplementation operation is terminated directly.

[0048] In the implementation manner of the present application, subsequently, the management personnel also count the power outage data of all the electric energy meters in a certain area and calculate the power outage index of the area. Here, the power outage index represents the power outage frequency of an area. The larger the power outage index, the higher the power outage frequency. Then adjust the load cycle Tm of the electric energy meters in the area according to the power outage index. Specifically, when the power outage index is greater than the preset threshold, the load cycle Tm is set to a first preset value, and when the power outage index is less than or equal to the preset threshold, the load cycle Tm is set to a second preset value. The second preset value is greater than the first preset value. That is, when the power outage frequency is high, the load cycle Tm is set to be smaller. On the contrary, when the power outage frequency is low, the load cycle Tm is set to be larger.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present invention.

Claims

1. A method for supplementing the load data of an electric energy meter, characterized in that: Include: Determine the last power outage time T1 of the electric energy meter and the current time T2; The load data supplementary recording strategy is determined based on the power outage time T1, the current time T2 and the load cycle Tm.

2. The method for supplementing the electric energy meter load data according to claim 1, characterized in that: The specific method for determining the load data supplementary recording strategy based on the power outage time T1, the current time T2 and the load cycle Tm is: If the power outage time T1 and the current time T2 are within the same load cycle Tm, no additional load data recording is performed; If the power outage time T1 and the current time T2 are not within the load cycle Tm, the load data is supplemented.

3. The method for supplementing the electric energy meter load data according to claim 2, characterized in that: If the power outage time T1 and the current time T2 are not within the load cycle Tm, the number of load data items that need to be supplemented is calculated based on the power outage time T1, the current time T2 and the load cycle Tm.

4. The method for supplementing the electric energy meter load data according to claim 3, characterized in that: The specific method for calculating the number of data to be supplemented according to the power outage time T1, the current time T2 and the load cycle Tm is: The number of load record time points between the power outage time T1 and the current time T2 is calculated, and is used as the number of data items that need to be supplemented.

5. The method for supplementing the electric energy meter load data according to claim 4, characterized in that: After determining the number of data items that need to be supplemented, a load curve is generated according to a predetermined format and stored in a load curve storage area.

6. The method for supplementing the electric energy meter load data according to claim 5, characterized in that: The load curve includes a time segment, a repetition number segment, and a load record object value segment.

7. The method for supplementing the electric energy meter load data according to claim 6, characterized in that: After the load curve is stored in the load curve storage area, the load record management area pointer is updated, and the total number of load records, the load record pointer and the matching read pointer are changed accordingly according to a predetermined format.

8. The method for supplementing the electric energy meter load data according to claim 1, characterized in that: Before calculating the time difference between the power outage time T1 and the current time T2, the electric energy meter load data supplementary recording method further comprises: Determine whether the power outage time T1 is earlier than the current time T2; If the power outage time T1 is earlier than the current time T2, then executing the subsequent step of calculating the time difference between the power outage time T1 and the current time T2; If the power outage time T1 is later than the current time T2, the data is determined to be abnormal and the process ends.

9. The method for supplementing the electric energy meter load data according to claim 1, characterized in that: Collect the power outage data of all electric energy meters in a certain area and calculate the power outage index of the area; The load period Tm of the electric energy meter in the area is adjusted according to the power outage index.

10. The method for supplementing the electric energy meter load data according to claim 9, characterized in that: When the power outage index is greater than a preset threshold, the load cycle Tm is set to a first preset value; when the power outage index is less than or equal to the preset threshold, the load cycle Tm is set to a second preset value, and the second preset value is greater than the first preset value.

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