CN111025068A - Method and device for reading load curve data of electric meter and electronic equipment - Google Patents
Method and device for reading load curve data of electric meter and electronic equipment Download PDFInfo
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The invention provides an ammeter load curve data reading method, an ammeter load curve data reading device and electronic equipment, and relates to the technical field of electric power systems, wherein the method comprises the steps of obtaining the reading interval time of single load curve data of a single ammeter in a target station area, and determining the storage density according to the interval time; calculating the maximum reading block number of the single load curve data which can be read by a single data packet; determining the storage position of the single load curve data to be copied according to the interval time, the storage density and the maximum copying block number; storing the single load curve data to be copied to a corresponding storage position; the steps are repeatedly executed, and all data items in the load curve data are read, so that the reading efficiency of reading the composite curve can be effectively improved, and the storage pressure and the reading pressure of the concentrator are greatly reduced.
Description
Technical Field
The invention relates to the technical field of power systems, in particular to a method and a device for reading load curve data of an electric meter and electronic equipment.
Background
Along with the popularization of the intelligent electric meter, users have higher and higher requirements on the functions of the intelligent electric meter. Load curve storage is a very common and very important function. The electric meter records information such as voltage, current, electric quantity and the like during the operation of the electric meter according to a certain fixed interval period (such as 5 minutes, 15 minutes, 30 minutes and the like), and then draws the information into a load curve according to the time sequence. The data are very significant for line loss control, transformer district division and power consumption analysis of the power company. In order to facilitate the analysis of the relevant indexes of the power supply quality, the concentrator needs to collect 96-point voltage, current, power factor and other information every day. However, the data size of the load curve of the electric meter is huge, so that the reading efficiency of the load curve of the concentrator is low, and the storage pressure is huge.
Disclosure of Invention
The invention aims to provide an ammeter load curve data reading method, an ammeter load curve data reading device and electronic equipment, which can effectively improve reading efficiency of reading a composite curve and greatly reduce storage pressure and reading pressure of a concentrator.
In a first aspect, an embodiment provides an electricity meter load curve data reading method, including:
acquiring interval time of reading single load curve data of a single ammeter in a target transformer area, and determining storage density according to the interval time;
calculating the maximum reading block number of the single load curve data which can be read by a single data packet;
determining the storage position of the single load curve data to be copied according to the interval time, the storage density and the maximum copying block number;
storing the single load curve data to be copied to a corresponding storage position;
and repeatedly executing the steps, and reading all data items in the load curve data.
In an optional implementation manner, obtaining an interval time for reading single load curve data of a single electric meter in a target platform area, and before determining the storage density according to the interval time, the method further includes:
and completing reading of the daily frozen data.
In an alternative embodiment, calculating the maximum number of reading blocks that a single data packet can read a single load curve data includes:
and determining the number of the single packet reading blocks according to the length of the single load curve data and the data length of the reading single load curve supported by the single data packet.
In an optional embodiment, determining the storage location of the single load curve data to be copied according to the interval time, the storage density and the maximum number of copy blocks includes:
acquiring a first empty data time point of the electric meter for storing single load curve data;
determining the remaining meter reading time according to the first empty data time point, and determining the maximum reading packet number according to the remaining meter reading time and the storage density;
comparing the maximum reading packet number with the maximum reading block number, if the maximum reading packet number is smaller than the maximum reading block number, taking the maximum reading packet number as the reading packet number, otherwise, taking the maximum reading block number as the reading packet number;
acquiring the starting time of the ammeter;
and sequentially determining the storage position of each packet of data according to the starting time of the ammeter, the interval time and the reading packet number.
In a second aspect, an embodiment provides an electricity meter load curve data reading device, including:
the acquisition module is used for acquiring the interval time of reading the single load curve data of the single ammeter in the target area and determining the storage density according to the interval time;
the maximum reading block number module is used for calculating the maximum reading block number of the single load curve data which can be read by a single data packet;
the storage position determining module is used for determining the storage position of the single load curve data to be copied according to the interval time, the storage density and the maximum copying block number;
the storage module is used for storing the single load curve data to be copied to the corresponding storage position;
and the repeating module is used for repeatedly executing the steps and reading all data items in the load curve data.
In an alternative embodiment, the method further comprises:
and the daily freezing module is used for completing reading of the daily frozen data.
In an alternative embodiment, the maximum number of copy blocks module is further configured to:
and determining the number of the single packet reading blocks according to the length of the single load curve data and the data length of the reading single load curve supported by the single data packet.
In an alternative embodiment, the storage location determining module according to the interval time includes:
the empty data time point module is used for acquiring a first empty data time point of the single load curve data stored by the electric meter;
the maximum reading packet number module is used for determining the remaining meter reading time length according to the first empty data time point and determining the maximum reading packet number according to the remaining meter reading time length and the storage density;
the comparison module is used for comparing the maximum reading packet number with the maximum reading block number, if the maximum reading packet number is smaller than the maximum reading block number, the maximum reading packet number is used as the reading packet number, and otherwise, the maximum reading block number is used as the reading packet number;
the starting time module is used for acquiring the starting time of the ammeter;
and the position determining module is used for sequentially determining the storage position of each packet of data according to the starting time of the ammeter, the interval time and the reading packet number.
In a third aspect, an embodiment provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor implements the steps of the method of any one of the foregoing embodiments when executing the computer program.
In a fourth aspect, embodiments provide a computer readable medium having non-volatile program code executable by a processor, the program code causing the processor to perform the method of any of the preceding embodiments.
According to the method, the device and the electronic equipment for reading the load curve data of the electric meter, the storage density is determined by obtaining the reading time interval, the maximum reading block number is calculated, the storage position of the single load curve data is determined according to the time interval, the storage density and the maximum reading block number, so that the storage of the single load curve data is realized, the load curve data of all data items are read in sequence, and the reading of the whole load curve data is completed; in the embodiment, the single data item is read in a data block mode, so that the reading times are greatly reduced, the reading efficiency is improved, and the storage pressure and the reading pressure of the concentrator are reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart of a method for reading load curve data of an electricity meter according to an embodiment of the present invention;
FIG. 2 is another flowchart of a method for reading load curve data of an electricity meter according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an electricity meter load curve data reading device according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an electronic device according to an embodiment of the present invention.
Icon: 31-an acquisition module; 32-maximum reading block number module; 33-a storage location determination module; 34-a storage module; 35-a repeating module; 400-an electronic device; 401 — a communication interface; 402-a processor; 403-a memory; 404-bus.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
At present, in order to reduce the pressure of reading the load curve by the concentrator, the following measures are generally adopted:
and (4) setting a key user to copy and read curve data (the key user can set 20 users at most), simultaneously performing sun-moon freezing and curve copying, and storing the curve data by using real-time data of the electric energy meter. However, this method cannot cover the whole platform area due to too small data volume, which is not favorable for data analysis; moreover, curve data are interspersed at each time point of 24 hours every day, daily freezing reading is interrupted randomly, and daily freezing data reading is influenced.
The other measure is to set a curve task for reading (measuring points, data items and acquisition intervals can be flexibly set), the day and month freezing and the curve task are simultaneously carried out, and the curve reading uses real-time data of the electric energy meter as curve data for storage. In the mode, the curve collection and use electric meter real-time data is converted into curve data, the real-time data has timeliness, for example, the interval data of 15 minutes is separated, the data of time point 2:00 is obtained, after the time exceeds 2:15, the real-time data cannot be used as the data of the time point 2:00, the data can be read only in 15 minutes, the time is short, and curve missing points are easily caused. The data acquisition of each measuring point is different in necessary time, so that the curve data of each measuring point has a random difference value of 15 minutes, and the accuracy of the curve data is influenced. (e.g., 12: 00 time point curve data, number 1 measurement points at 12:01, 12:15 time curve data, number 1 measurement points at 12: 29); the curve data are inserted in 24 hours every day, and at each time point, daily freezing reading is interrupted randomly, so that the reading of the daily freezing data is influenced.
Based on the above, the invention provides a method, a device and an electronic device for reading load curve data of an electric meter, which can effectively improve the reading efficiency of reading a composite curve and greatly reduce the storage pressure and reading pressure of a concentrator.
Referring to fig. 1, the method for reading data of a load curve of an electric meter provided in this embodiment includes:
s110: acquiring interval time of reading single load curve data of a single ammeter in a target transformer area, and determining storage density according to the interval time;
s120: calculating the maximum reading block number of the single load curve data which can be read by a single data packet;
s130: determining the storage position of the single load curve data to be copied according to the interval time, the storage density and the maximum copying block number;
s140: storing the single load curve data to be copied to a corresponding storage position;
s150: and repeatedly executing the steps, and reading all data items in the load curve data.
Specifically, the load curve data includes a plurality of data items, and the individual load curve data of a single electricity meter refers to one of the data items, which may also be referred to as data item or data ID. In this embodiment, when curve data is read, a cycle of reading is performed every 1 hour, and curve data of 96 points in the previous day is read back at one time. Reading the load record interval time of the electric meter at first, and taking the interval time as a storage basis of the load record of the electric meter of the concentrator.
And the concentrator calculates the number of load record blocks needing reading according to the storage density, correspondingly reads the load records of the electric meter, and stores the data in the designated positions one by one according to the actual interval of the electric meter.
This embodiment can adopt the mode of data block to copy and read, can improve greatly and copy and read efficiency, for example, the length of single-phase table voltage data is 2 bytes, and carrier one packet can support 144 bytes, reads once and can copy back 72 time point data, if read 96 points of curve, curve data only need two packets can be gathered successfully one day, compares conventional mode and need divide 96 times to copy and read, and efficiency promotes 48 times, has promoted collection efficiency greatly.
In addition, in the process of reading data, whether the reply of the ammeter is legal or not is judged through the reading message of the ammeter. And skipping over the electric meters which reply to the abnormity, and no reading is carried out in the current round.
Optionally, obtaining an interval time for reading the single load curve data of the single electric meter in the target platform area, and before determining the storage density according to the interval time, the method further includes:
and completing reading of the daily frozen data.
Specifically, after the concentrator finishes reading the day freezing data every day, reading the curve data again, so that the day freezing collection is not influenced.
Optionally, step S120 includes:
and determining the number of the single packet reading blocks according to the length of the single load curve data and the data length of the reading single load curve supported by the single data packet.
Specifically, for the voltage data of the single-phase electric meter, the length of the single load curve data is 2, and the data length of the reading single load curve supported by a single data packet is generally 144, so that the maximum number of reading blocks of the voltage data of the single-phase electric meter is 144/2-72.
Optionally, step S130 includes:
acquiring a first empty data time point of the electric meter for storing single load curve data;
determining the remaining meter reading time according to the first empty data time point, and determining the maximum reading packet number according to the remaining meter reading time and the storage density;
comparing the maximum reading packet number with the maximum reading block number, if the maximum reading packet number is smaller than the maximum reading block number, taking the maximum reading packet number as the reading packet number, otherwise, taking the maximum reading block number as the reading packet number;
acquiring the starting time of the ammeter;
and sequentially determining the storage position of each packet of data according to the starting time of the ammeter, the interval time and the reading packet number.
Specifically, the empty data time point is the time point when the concentrator stores data, for example, the storage interval of the voltage curve of the electric meter is 15(t) minutes, the concentrator is searched for the stored records, and the stored records are searched for from 00:00, 00:15 and 00:30 in sequence until the time point when no data is found is searched for, and the time point is taken as the starting time point, namely the empty data time point.
The load curve data of the embodiment is set according to the user requirements, and different load curve reading data ID tables can be configured. And continuing reading according to the table.
Generally, reading is carried out according to the active power, the reactive power, the power factor, the total reactive power, the four-quadrant reactive power and the current demand of the voltage and the current, and a user can select required single load curve data (data ID) of a single electric meter. The concentrator skips the individual load curve data for individual meters that are not needed.
Before reading curve data, reading a load curve time interval t of the electric meter, and determining a data storage position by using the time interval t by the concentrator. Referring to fig. 2, the specific reading method of this embodiment is as follows:
s210: sequentially acquiring curve data of all electric meters in a target platform area according to the sequence of the electric meters, and acquiring a first empty data time point Ts of the electric meters;
s220: calculating the maximum number of reading blocks;
s230: calculating the reading packet number by comparing (24:00:00-Ts)/(15 x 60) (24:00:00-Ts is calculated by taking seconds as a unit, 15 represents time interval 15 minutes, 60 represents 60 seconds) with N, taking the smaller value as N, and reading N data after the time point Ts of the electric meter;
s240: analyzing the reply of the electric meter, judging whether the reply of the electric meter is normal or not, and jumping if the reply of the electric meter is abnormalGo to step S260; otherwise, resolving the return starting time TgetAnd the number of data NgetCalculating and storing data into a designated position, and storing curves by the concentrator at intervals of 15 minutes;
s250: updating the time point Ts of reading the electric meter to Tget+t×NgetAnd repeating the step S240 until the time point Ts of reading the electric meter is the next day.
S260: and switching the single load curve data (data ID) of the next single electric meter, and repeatedly executing the step S210 until the single load curve data (data ID) of all the single electric meters are copied.
S270: and switching the next measuring point, and repeatedly executing the steps until all the measuring points finish reading.
And after the steps are executed, waiting for the next round of load curve reading to start.
In step S240, the designated location is stored, for example, by storing the first data into T at 30 minutes intervalsgetThe second data is stored in Tget+ (30X 1) min, third data is stored in TgetTime point + 30 x 2 min … ….
And for example, the actual interval of the electric meter is 5 minutes, then the first data is stored in TgetFourth data is stored in Tget+ (5 x 3) min, seventh data store TgetTime point + 5 x 6 min … ….
The method can not only finish the reading of the daily 96-point curve data of all the electric meters in a normal distribution area, but also ensure daily freezing data, greatly improve the meter reading efficiency, and achieve the purposes of analyzing the aging trend of a power supply line and monitoring the voltage quality of a power grid and the shifting condition of a load; the curve data collected by the implementation are all the curve data of the electric meter at the same time point, and the effectiveness of the data can be guaranteed. The embodiment can also adaptively select the starting time and the number of the reading blocks, reduce invalid actions and improve the reading efficiency.
Referring to fig. 3, the device for reading the load curve data of the electric meter provided in this embodiment includes:
the acquisition module 31 is configured to acquire an interval time between reading of single load curve data of a single electric meter in a target distribution room, and determine a storage density according to the interval time;
the maximum reading block number module 32 is used for calculating the maximum reading block number of the single load curve data which can be read by a single data packet;
the storage position determining module 33 is configured to determine a storage position of the single load curve data to be copied according to the interval time, the storage density, and the maximum number of copy blocks;
the storage module 34 is configured to store the single load curve data to be copied to a corresponding storage location;
and a repeating module 35, configured to repeatedly perform the above steps, and copy and read all data items in the load curve data.
Optionally, the method further comprises:
and the daily freezing module is used for completing reading of the daily frozen data.
Optionally, the maximum number of blocks to be copied module 32 is further configured to:
and determining the number of the single packet reading blocks according to the length of the single load curve data and the data length of the reading single load curve supported by the single data packet.
Optionally, the storage location determining module 33 according to the interval time includes:
the empty data time point module is used for acquiring a first empty data time point of the single load curve data stored by the electric meter;
the maximum reading packet number module is used for determining the remaining meter reading time length according to the first empty data time point and determining the maximum reading packet number according to the remaining meter reading time length and the storage density;
the comparison module is used for comparing the maximum reading packet number with the maximum reading block number, if the maximum reading packet number is smaller than the maximum reading block number, the maximum reading packet number is used as the reading packet number, and otherwise, the maximum reading block number is used as the reading packet number;
the starting time module is used for acquiring the starting time of the ammeter;
and the position determining module is used for sequentially determining the storage position of each packet of data according to the starting time of the ammeter, the interval time and the reading packet number.
Referring to fig. 4, an embodiment of the present invention further provides an electronic device 400, which includes a communication interface 401, a processor 402, a memory 403, and a bus 404, where the processor 402, the communication interface 401, and the memory 403 are connected by the bus 404; the memory 403 is used for storing a computer program for supporting the processor 402 to execute the method for reading the load curve data of the electric meter, and the processor 402 is configured to execute the program stored in the memory 403.
Optionally, an embodiment of the present invention further provides a computer-readable medium having a non-volatile program code executable by a processor, where the program code causes the processor to execute the method for reading the load curve data of the electric meter as in the above embodiment.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for reading load curve data of an electric meter is characterized by comprising the following steps:
acquiring interval time of reading single load curve data of a single ammeter in a target transformer area, and determining storage density according to the interval time;
calculating the maximum reading block number of the single load curve data which can be read by a single data packet;
determining the storage position of the single load curve data to be copied according to the interval time, the storage density and the maximum copying block number;
storing the single load curve data to be copied to a corresponding storage position;
and repeatedly executing the steps, and reading all data items in the load curve data.
2. The method of claim 1, wherein the obtaining of the interval time of reading the single load curve data of the single electric meter in the target area further comprises, before determining the storage density according to the interval time:
and completing reading of the daily frozen data.
3. The method of claim 1, wherein calculating a maximum number of transcription blocks that a single packet can transcribe single load curve data comprises:
and determining the number of the single packet reading blocks according to the length of the single load curve data and the data length of the reading single load curve supported by the single data packet.
4. The method of claim 1, wherein determining a storage location of the single load curve data to be copied according to the interval time, the storage density, and the maximum number of copy blocks comprises:
acquiring a first empty data time point of the electric meter for storing single load curve data;
determining the remaining meter reading time according to the first empty data time point, and determining the maximum reading packet number according to the remaining meter reading time and the storage density;
comparing the maximum reading packet number with the maximum reading block number, if the maximum reading packet number is smaller than the maximum reading block number, taking the maximum reading packet number as the reading packet number, otherwise, taking the maximum reading block number as the reading packet number;
acquiring the starting time of the ammeter;
and sequentially determining the storage position of each packet of data according to the starting time of the ammeter, the interval time and the number of reading packets.
5. The utility model provides an ammeter load curve data device of reading, its characterized in that includes:
the acquisition module is used for acquiring the interval time of reading the single load curve data of the single ammeter in the target area and determining the storage density according to the interval time;
the maximum reading block number module is used for calculating the maximum reading block number of the single load curve data which can be read by a single data packet;
the storage position determining module is used for determining the storage position of the single load curve data to be copied according to the interval time, the storage density and the maximum copying block number;
the storage module is used for storing the single load curve data to be copied to the corresponding storage position;
and the repeating module is used for repeatedly executing the steps and reading all data items in the load curve data.
6. The apparatus of claim 5, further comprising:
and the daily freezing module is used for completing reading of the daily frozen data.
7. The apparatus of claim 5, wherein the maximum number of transcription blocks module is further configured to:
and determining the number of the single packet reading blocks according to the length of the single load curve data and the data length of the reading single load curve supported by the single data packet.
8. The apparatus of claim 5, wherein the means for determining a storage location based on the interval comprises:
the empty data time point module is used for acquiring a first empty data time point of the single load curve data stored by the electric meter;
the maximum reading packet number module is used for determining the remaining meter reading time length according to the first empty data time point and determining the maximum reading packet number according to the remaining meter reading time length and the storage density;
the comparison module is used for comparing the maximum reading packet number with the maximum reading block number, if the maximum reading packet number is smaller than the maximum reading block number, the maximum reading packet number is used as the reading packet number, and otherwise, the maximum reading block number is used as the reading packet number;
the starting time module is used for acquiring the starting time of the ammeter;
and the position determining module is used for sequentially determining the storage position of each packet of data according to the starting time of the ammeter, the interval time and the reading packet number.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the steps of the method of any of the preceding claims 1 to 4 are implemented when the computer program is executed by the processor.
10. A computer-readable medium having non-volatile program code executable by a processor, wherein the program code causes the processor to perform the method of any of claims 1 to 4.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113567718A (en) * | 2021-06-30 | 2021-10-29 | 宁波三星医疗电气股份有限公司 | Method for selecting data acquisition mode according to transformer area environment |
| CN115695503A (en) * | 2022-12-29 | 2023-02-03 | 长沙力合微智能科技有限公司 | Terminal data reading method, meter reading system, electronic device and storage medium |
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