CN112763003A - Data acquisition system and method based on intelligent instrument communication unit in power grid - Google Patents
Data acquisition system and method based on intelligent instrument communication unit in power grid Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The invention provides a data acquisition system and a data acquisition method based on an intelligent instrument communication unit in a power grid, which comprises the following steps: presetting the collected communication time in a collection module; calculating impedance information and carrier noise information on the power grid in communication time, and carrying out comprehensive processing on the impedance information and the carrier noise information to obtain optimal communication time; the acquisition module finishes communication meter reading of the meters in the power grid at the optimal time. According to the invention, the time module is arranged in the data acquisition module in the power network, an administrator presets data acquisition time through the time module, then obtains impedance information and carrier information in the power network through the impedance calculation module and the carrier noise module, and performs data acquisition and meter reading operation of the intelligent instrument in the power network when the impedance calculation module and the carrier noise module both reach a preset stable data acquisition and transmission state, so that stable data acquisition and transmission operation of the intelligent instrument in the power network can be conveniently completed, and the data acquisition quality of the intelligent instrument is improved.
Description
Technical Field
The invention belongs to the technical field of data acquisition methods of intelligent instruments in a power grid, and particularly relates to a data acquisition system and a data acquisition method based on a communication unit of an intelligent instrument in the power grid.
Background
The power grid carrier communication is power system communication which takes a power transmission line as a transmission medium of a carrier signal. Power grid communication technology has emerged in the early 20 s of the 20 th century. The method is a means for realizing data transmission and information exchange by using the existing low-voltage distribution network as a transmission medium. When the power grid communication mode is used for sending data, the sender firstly modulates the data onto a high-frequency carrier, and then couples the data onto the power grid through the coupling circuit after power amplification. The peak-to-peak voltage of the signal band does not exceed 10V, so that the power network is not affected.
The intelligent meter reading in the power network refers to a new technology for automatically reading and processing meter data by adopting technologies such as communication, computer network and the like. The intelligent meter in the power network is generally read by a carrier communication mode of the power network, an automatic meter reading technology is adopted, so that not only can human resources be saved, but also the meter reading accuracy can be improved, and the bill errors caused by estimation or copying are reduced, so that related management departments can timely and accurately obtain data information, and the user does not need to reserve the meter reading time to the home with a meter reader any more and can quickly inquire the bill, therefore, the technology is more and more popular with the user.
However, when a power line carrier is adopted as a communication unit in an intelligent instrument installed in an existing power grid to collect meter reading information, the minimum, namely the most stable communication time of a load in the power grid is not enough to be mastered, the stability of data collection is affected, the later use of data is further affected, and the phenomenon that the quality of data collection is low is easily caused.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a data acquisition system and method based on a communication unit of an intelligent meter in a power grid, aiming at overcoming the defects in the prior art, so as to solve the problems of unstable data acquisition and low data quality in the power grid proposed in the background art.
In a first aspect, an embodiment of the present application provides a data acquisition method based on an intelligent instrument communication unit in a power grid, including the following steps:
presetting collected communication time in a collection module, wherein the communication time is a preset time period;
calculating impedance information and carrier noise information on the power grid in communication time, and carrying out comprehensive processing on the impedance information and the carrier noise information to obtain optimal communication time;
the acquisition module finishes communication meter reading of the meters in the power grid at the optimal time.
Preferably, the communication time is a communication time period preset by an administrator, specifically, a plurality of communication time periods are mainly used for the administrator to count the time periods with smaller load in the power grid, and the duration of each communication time is set to be 10-15 min.
Preferably, the impedance information on the power grid is obtained by calculating by measuring a voltage amplitude and a current amplitude on a voltage line, and if a plurality of user loads are connected in parallel in the power grid, equivalent impedance information of the plurality of user loads is calculated, the carrier noise information specifically includes selecting one carrier from the plurality of carriers as a communication carrier, and a carrier noise threshold is preset at the same time, and the noise of the selected communication carrier is not higher than the preset noise threshold.
Preferably, the optimal communication time is specifically that impedance information on the power grid in the communication time is calculated, when the impedance information is lower than preset impedance information, carrier noise information on the power grid is extracted, a carrier lower than a carrier noise threshold is selected as a communication carrier, and communication meter reading of an instrument in the power grid is performed.
In a second aspect, an embodiment of the present application provides a data acquisition system based on an intelligent instrument communication unit in a power grid, including an acquisition module arranged in the power grid;
the acquisition module is provided with a time module, an impedance calculation module, a carrier noise module and a processing module, and the acquisition module completes communication with a power grid through power grid carrier communication to complete communication meter reading operation of the meters in the power grid.
Preferably, the time module is used for a manager to preset communication time, and in the communication time, the impedance calculation module and the carrier noise module in the acquisition module are communicated with a meter in the power grid to finish meter reading operation.
Preferably, the impedance calculation module is configured to measure a voltage amplitude and a current amplitude on a voltage line from user loads in the power grid, and perform calculation to obtain impedance information on the power grid, when there are multiple user loads in the power grid, calculate an equivalent impedance after the multiple user loads are connected in parallel on the power grid, when the impedance information obtained through calculation within a communication time is lower than preset impedance information, extract carrier noise information on the power grid by using the carrier noise module, select a carrier lower than a carrier noise threshold as a communication carrier, and complete a communication meter reading operation of an instrument in the power grid.
Preferably, the processing module selects the moment when the impedance information in the power grid within the communication time is lower than the preset impedance information, and then selects the carrier wave lower than the carrier wave noise threshold within the communication time, and when both of the moment and the carrier wave meet the preset condition, the meter reading operation of the meter in the power grid is performed.
In a third aspect, an embodiment of the present application provides an electronic device, including: the data acquisition method comprises a processor, a storage medium and a bus, wherein the storage medium stores machine-readable instructions executable by the processor, when an electronic device runs, the processor and the storage medium communicate through the bus, and the processor executes the machine-readable instructions to execute the steps of the data acquisition method based on the intelligent instrument communication unit in the power grid according to any one of the first aspect.
In a fourth aspect, the present application provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to perform the steps of the data collection method based on the smart meter communication unit in the power grid according to any one of the first aspect.
Compared with the prior art, the invention has the following advantages:
according to the invention, the time module is arranged in the data acquisition module in the power network, an administrator presets data acquisition time through the time module, then obtains impedance information and carrier information in the power network through the impedance calculation module and the carrier noise module, and performs data acquisition and meter reading operation of the intelligent instrument in the power network when the impedance calculation module and the carrier noise module both reach a preset stable data acquisition and transmission state, so that stable data acquisition and transmission operation of the intelligent instrument in the power network are conveniently completed, the data acquisition quality of the intelligent instrument is improved, and the later-stage use is facilitated.
Drawings
FIG. 1 is a block diagram of a data acquisition method of the present invention;
FIG. 2 is a schematic block diagram of a data acquisition system of the present invention.
Detailed Description
In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it should be understood that the drawings in the present application are for illustrative and descriptive purposes only and are not used to limit the scope of protection of the present application. Additionally, it should be understood that the schematic drawings are not necessarily drawn to scale. The flowcharts used in this application illustrate operations implemented according to some embodiments of the present application. It should be understood that the operations of the flow diagrams may be performed out of order, and steps without logical context may be performed in reverse order or simultaneously. One skilled in the art, under the guidance of this application, may add one or more other operations to, or remove one or more operations from, the flowchart.
In addition, the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
s101, presetting collected communication time in a collection module, wherein the communication time is a preset time period, the communication time is a communication time period preset by an administrator, particularly, the time period with a small load in a power grid counted by the administrator is mainly used as the time period with the small load, a plurality of the time periods are arranged and are arranged at intervals, in the time period with the small user load in the power grid, a proper preset time period is selected for setting, the setting is particularly determined according to the load condition in the power grid, in addition, the completeness and stability of data collection are facilitated, the influence caused by the load fluctuation of the power grid is avoided, the duration of each communication time is set to be 10-15min, in the time period of 10-15min, the collection process is repeatedly carried out until a proper communication time is found, and the data collection process of the instrument is completed.
S102, calculating impedance information and carrier noise information on the power grid in communication time, wherein the impedance information on the power grid is obtained by calculating by measuring voltage amplitude and current amplitude on a voltage line, and comparing the impedance information with preset impedance information after obtaining real-time impedance information in the power grid to find out the time lower than the preset impedance information value;
if a plurality of user loads are connected in parallel in the power grid, calculating equivalent impedance information of the user loads, and determining a first data acquisition moment and then selecting a communication carrier when the equivalent impedance information value is smaller than a preset impedance information value;
the carrier noise information specifically comprises a carrier wave selected from a plurality of carrier waves as a communication carrier wave, a carrier noise threshold is preset at the same time, the noise of the selected communication carrier wave is not higher than the preset noise threshold, and after a proper communication time is selected by using impedance information, the carrier wave with the carrier noise lower than the preset noise threshold is selected from the plurality of communication carrier waves for carrier communication;
the method comprises the steps that a noise threshold of a carrier is preset by an administrator, specifically, a user load of a power grid is used as a reference value, and different carrier noise thresholds are set according to different power grids;
carrying out comprehensive processing on the data to obtain optimal communication time, wherein the optimal communication time is specifically that impedance information on a power grid in communication time is calculated, when the impedance information is lower than preset impedance information, carrier noise information on the power grid is extracted, and a carrier lower than a carrier noise threshold is selected as a communication carrier and is the optimal communication time for data acquisition;
s103, the acquisition module completes communication meter reading of the meters in the power grid at the optimal time, the acquired data are transmitted through power line carrier communication, meter reading operation of the intelligent meters in the power grid is completed, and meter reading efficiency is improved.
Embodiment 2, the present application provides a data acquisition system based on an intelligent instrument communication unit in a power grid, including an acquisition module 1 arranged in the power grid;
the acquisition module 1 is provided with a time module 11, an impedance calculation module 12, a carrier noise module 13 and a processing module 14, and the acquisition module completes communication with a power grid through power grid carrier communication to complete communication meter reading operation of meters in the power grid.
The time module 11 is used for presetting communication time by an administrator, the communication time is a preset time period, the communication time is a communication time period preset by the administrator, specifically, a plurality of time periods with smaller load in the power grid counted by the administrator are mainly used, the time periods are arranged at intervals, in the time period with smaller user load in the power grid, a proper preset time period is selected for setting, the setting is specifically determined according to the load condition in the power grid, in addition, the completeness and stability of data acquisition are facilitated, the influence caused by the load fluctuation of the power grid is avoided, the duration of each communication time is set to be 10-15min, in the time period of 10-15min, the acquisition process is repeated until a proper communication moment is found, the data acquisition process of an instrument is completed, and the meter reading operation is completed.
The impedance calculation module 12 is configured to measure a voltage amplitude and a current amplitude on a voltage line from a user load in the power grid, and perform calculation to obtain impedance information on the power grid, when there are multiple user loads in the power grid, calculate an equivalent impedance after the multiple user loads are connected in parallel on the power grid, and calculate a time when the obtained impedance information is lower than a preset impedance information in a communication time, which is a data acquisition time; the preset impedance information value is an optimal value obtained by an administrator under the minimum load of the power grid by taking the load in the power grid as reference, and the preset impedance information values in different power grids are different, so that the actual measurement and monitoring of the administrator are subject to the standard.
And in the acquisition moment, extracting carrier noise information on the power grid by using the carrier noise module 13, and selecting a carrier wave lower than a carrier noise threshold as a communication carrier wave to finish the communication meter reading operation of the meter in the power grid.
The processing module 14 specifically selects a moment when the impedance information in the power network in the communication time is lower than a preset impedance information, and then selects a carrier wave lower than a carrier wave noise threshold in the communication time, when both the moment and the carrier wave meet a preset condition, an optimal communication moment is obtained, the optimal communication moment specifically calculates the impedance information in the power network in the communication time, when the impedance information is lower than the preset impedance information, the carrier wave noise information in the power network is extracted, the carrier wave lower than the carrier wave noise threshold is selected as a communication carrier wave, and meter reading operation of an instrument in the power network is performed for the optimal communication moment of data acquisition.
Embodiment 3 is a schematic structural diagram of an electronic device provided in an embodiment of the present application, including: a processor, a bus, and a memory.
The storage medium stores machine-readable instructions executable by the processor, the processor and the storage medium communicating via a bus when the electronic device is operating, the processor executing the machine-readable instructions, the machine-readable instructions when executed by the processor performing the following:
presetting collected communication time in a collection module, wherein the communication time is a preset time period;
calculating impedance information and carrier noise information on the power grid in communication time, and carrying out comprehensive processing on the impedance information and the carrier noise information to obtain optimal communication time;
the acquisition module finishes communication meter reading of the meters in the power grid at the optimal time.
The embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program performs the steps of the data acquisition method according to any of the above embodiments.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to corresponding processes in the method embodiments, and are not described in detail in this application. In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and there may be other divisions in actual implementation, and for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or modules through some communication interfaces, and may be in an electrical, mechanical or other form.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A data acquisition method based on an intelligent instrument communication unit in a power grid is characterized by comprising the following steps:
presetting collected communication time in a collection module, wherein the communication time is a preset time period;
calculating impedance information and carrier noise information on the power grid in communication time, and carrying out comprehensive processing on the impedance information and the carrier noise information to obtain optimal communication time;
the acquisition module finishes communication meter reading of the meters in the power grid at the optimal time.
2. The data acquisition method based on the intelligent instrument communication unit in the power grid as claimed in claim 1, wherein the communication time is a communication time period preset by an administrator, specifically, a time period with a small load in the power grid counted by the administrator is mainly used, and the communication time period is set to be 10-15 min.
3. The data acquisition method based on the intelligent instrument communication unit in the power grid as claimed in claim 2, wherein the impedance information on the power grid is obtained by calculating by measuring the voltage amplitude and the current amplitude on the voltage line, and if a plurality of user loads are connected in parallel in the power grid, equivalent impedance information of the plurality of user loads is calculated, and the carrier noise information is specifically that one carrier is selected from the plurality of carriers as a communication carrier, and a carrier noise threshold is preset at the same time, and the noise of the selected communication carrier is not higher than the preset noise threshold.
4. The data acquisition method based on the intelligent instrument communication unit in the power grid as claimed in claim 3, wherein the optimal communication time is specifically that the impedance information on the power grid in the communication time is calculated, when the impedance information is lower than the preset impedance information, the carrier noise information on the power grid is extracted, the carrier lower than the carrier noise threshold is selected as the communication carrier, and the communication meter reading of the instrument in the power grid is performed.
5. A data acquisition system based on an intelligent instrument communication unit in a power grid is characterized by comprising an acquisition module arranged in the power grid;
the acquisition module is provided with a time module, an impedance calculation module, a carrier noise module and a processing module, and the acquisition module completes communication with a power grid through power grid carrier communication to complete communication meter reading operation of the meters in the power grid.
6. The data acquisition system based on the intelligent instrument communication unit in the power grid as claimed in claim 5, wherein the time module is used for an administrator to preset communication time, and in the communication time, the impedance calculation module and the carrier noise module in the acquisition module are communicated with the instrument in the power grid to complete meter reading operation.
7. The data acquisition system based on the intelligent instrument communication unit in the power grid as claimed in claim 6, wherein the impedance calculation module is configured to measure a voltage amplitude and a current amplitude on a voltage line from a user load in the power grid, and perform calculation to obtain impedance information on the power grid, when there are multiple user loads in the power grid, calculate an equivalent impedance after the multiple user loads are connected in parallel on the power grid, and when the impedance information obtained by calculation within a communication time is lower than preset impedance information, extract carrier noise information on the power grid by using a carrier noise module, select a carrier lower than a carrier noise threshold as a communication carrier, and complete a communication meter reading operation of an instrument in the power grid.
8. The data acquisition system based on the intelligent instrument communication unit in the power grid as claimed in claim 7, wherein the processing module selects the moment when the impedance information in the power grid in the communication time is lower than the preset impedance information, then selects the carrier wave lower than the carrier wave noise threshold in the change time, and performs meter reading operation of the instrument in the power grid when both the moment and the change time can meet the preset condition.
9. An electronic device, comprising: processor, storage medium and bus, the storage medium storing machine readable instructions executable by the processor, when the electronic device runs, the processor and the storage medium communicate through the bus, the processor executes the machine readable instructions to execute the steps of the data collection method based on the smart meter communication unit in the power grid according to any one of claims 1 to 4.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, performs the steps of the method for data collection based on smart meter communication units in an electric power network according to any one of claims 1 to 4.
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Application publication date: 20210507 |