Low-voltage transformer area identification method and device based on dual-mode communication

Abstract

The invention relates to a transformer area identification method and device based on dual-mode communication, and the method comprises the steps: carrying out the similarity analysis of a first zero-crossing data sequence and a second zero-crossing data sequence corresponding to each second CCO module, and obtaining a similarity analysis result; and based on the similarity analysis result and the SNR value of each first CCO module, obtaining a transformer area identification result. According to the transformer area identification method provided by the embodiment of the invention, the similarity analysis result of the power frequency zero-crossing data and the SNR value of the HRF signal are combined, so that the advantages of power line identification and wireless identification are fused, the complementarity of the power line identification and the wireless identification is utilized, and the identification accuracy and reliability can be remarkably improved.

Description

Technical Field

[0001] The invention relates to the field of low-voltage power line meter reading, and in particular to a low-voltage station area identification and device. Background Art

[0002] In the low-voltage power line electricity consumption information collection system, the substation refers to the power supply range or area of ​​a transformer. Management based on the substation as the basic unit can better monitor the power consumption and fine-tune the management. Meter substation identification is an important technology in the power system, which is used to determine the substation to which the meter belongs, that is, the connection relationship between the meter and the concentrator. The substation identification technology can identify the working substation of different broadband carrier power line networks, thereby improving the accuracy of household transformer relationship judgment, which is conducive to the management of substation line losses and improving the economic operation level of the power grid.

[0003] The traditional method of identifying the meter area is to identify it through manual inspection such as power outage or handheld area identification instrument, but these identification methods are too inefficient and have gradually been eliminated. At present, the identification technology based on broadband power line carrier (HPLC) communication technology has been rapidly developed. The basic principle of this area identification technology is that when two meters are connected to the same power supply line, their power consumption parameters have convergence, and the area to which the meter belongs is determined based on the convergence. However, in actual practice, the transformers in adjacent areas are generally connected to the same medium-voltage line. The power consumption parameters of the power supply lines in different areas will be affected by the same high-voltage side at the same time, resulting in a certain degree of convergence in the power consumption parameters of different areas, which will cause misjudgment. Therefore, how to improve the accuracy and reliability of area identification is an urgent problem to be solved. Summary of the invention

[0004] In view of this, the embodiments of the present application provide a low-voltage area identification method and device based on dual-mode communication to solve at least one problem existing in the background technology.

[0005] In a first aspect, an embodiment of the present application provides a low-voltage area identification method based on dual-mode communication, which is applied to a STA module, and the method includes: Receiving an HRF message sent by each first CCO module, and obtaining an SNR value of each first CCO module based on the HRF message; Receive the area collection HPLC message sent by each second CCO module, collect the corresponding power frequency zero-crossing data based on each area collection HPLC message, and obtain the first zero-crossing data sequence corresponding to each second CCO module; Receiving the zero-crossing data sequence sent by each second CCO module, and obtaining the second zero-crossing data sequence corresponding to each second CCO module; Performing similarity analysis on the first zero-crossing data sequence and the second zero-crossing data sequence corresponding to each second CCO module to obtain a similarity analysis result; Based on the similarity analysis result and the SNR value of each first CCO module, a station area identification result is obtained.

[0006] Optionally, obtaining a station area identification result based on the similarity analysis result and the SNR value of each first CCO module includes: If in the similarity analysis result, only the first zero-crossing data sequence corresponding to a certain second CCO module is similar to the second zero-crossing data sequence, then the STA module belongs to the station area where the second CCO module is located; If there are multiple first zero-crossing data sequences and second zero-crossing data sequences corresponding to the second CCO modules in the similarity analysis result that are similar, the station area to which the STA belongs is determined according to the SNR value of each first CCO module.

[0007] Optionally, judging the station area to which the STA belongs according to the SNR value of each CCO module includes: The station area where the CCO module corresponding to the highest SNR value among the SNR values ​​of the third CCO modules is located is determined as the station area to which the STA module belongs; wherein the third CCO module is a module in the first CCO module that overlaps with the multiple second CCO modules.

[0008] Optionally, receiving an HRF message sent by each first CCO module, and obtaining an SNR value of each first CCO module based on the HRF message includes: receiving the HRF central beacon frame periodically sent by each first CCO module; Calculate the SNR value of each HRF central beacon frame; An SNR average value is obtained according to the SNR values ​​of a preset number of HRF central beacon frames; the SNR average value is the SNR value of the first CCO module.

[0009] Optionally, after obtaining the station area identification result based on the similarity analysis result and the SNR value of each first CCO module, the method further includes: The station area identification result is sent to the CCO module corresponding to the station area to which the STA module belongs.

[0010] In a second aspect, an embodiment of the present application provides a low-voltage area identification device based on dual-mode communication, which is applied to a STA module, and the device includes: An SNR value calculation unit, configured to receive an HRF message sent by each first CCO module, and obtain an SNR value of each first CCO module based on the HRF message; A first zero-crossing data calculation unit is used to receive the HPLC message sent by each second CCO module, collect the corresponding power frequency zero-crossing data based on each HPLC message, and obtain the first zero-crossing data sequence corresponding to each second CCO module; A second zero-crossing data calculation unit, used for receiving the zero-crossing data sequence sent by each second CCO module, and obtaining a second zero-crossing data sequence corresponding to each second CCO module; A similarity result judgment unit is used to perform similarity analysis on the first zero-crossing data sequence and the second zero-crossing data sequence corresponding to each second CCO module to obtain a similarity analysis result; The station area identification and judgment unit is used to obtain a station area identification result based on the similarity analysis result and the SNR value of each first CCO module.

[0011] In a third aspect, an embodiment of the present application provides a computer-readable storage medium, which stores instructions. When the instructions are executed by a processor of an electronic device, the electronic device is able to execute the low-voltage substation area identification method based on dual-mode communication provided in any one of the first aspects above.

[0012] In a fourth aspect, an embodiment of the present application provides an electronic device, the electronic device comprising: processor; memory for storing computer executable instructions; The processor is used to execute the computer executable instructions to implement the low-voltage area identification method based on dual-mode communication as described in any one of the first aspects above.

[0013] The embodiment of the present application provides a method and device for identifying a substation based on dual-mode communication. The method performs similarity analysis on the first zero-crossing data sequence and the second zero-crossing data sequence corresponding to each second CCO module to obtain a similarity analysis result; then, based on the similarity analysis result and the SNR value of each first CCO module, the substation identification result is obtained. The substation identification method of the embodiment of the present application combines the similarity analysis result of the power frequency zero-crossing data and the SNR value of the HRF signal, thereby integrating the advantages of power line identification and wireless identification, and utilizing the complementarity of power line identification and wireless identification, which can significantly improve the accuracy and reliability of identification.

[0014] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 A flow chart of a low-voltage station area identification method based on dual-mode communication applied to a STA module provided in an embodiment of the present application; Figure 2 A schematic diagram of a low-voltage station area identification device based on dual-mode communication and applied to a STA module provided in an embodiment of the present application; Figure 3 A schematic diagram of the structure of an electronic device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0016] In order to make the technical solutions and beneficial effects of the present invention more clearly understood, the following is a detailed description by listing specific embodiments. Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application belongs.

[0017] In the power system, the low-voltage area refers to the power supply range or area of ​​a transformer, and the area is the basis of power distribution and communication signal transmission in the area. Each transformer is a core node, connected to a CCO (central coordinator) module, and the CCO module is deployed in the area to form a communication network hub. Each CCO further expands downward in a tree structure, connecting and managing a large number of STA (station) modules. These STA modules are widely distributed at the end of the power grid and are responsible for collecting and reporting meter data. Through such a hierarchical connection method, the CCO can efficiently collect information from each STA, and after integrating and processing this information, upload it to the area to which it belongs for centralized management and analysis. In actual applications, hundreds or even thousands of STA modules are connected to the CCO in each low-voltage area. The efficiency of manual investigation is too low, and it is also prone to misjudgment. In the embodiment of the present application, both CCO and STA are dual-mode communication modules, that is, they support HPLC communication and high-speed micro-power wireless (HRF) communication at the same time.

[0018] Figure 1 The flowchart of the low voltage area identification method based on dual-mode communication applied to the STA module provided in one embodiment of the present application. Figure 1 As shown, the method includes: S1. Receive an HRF message sent by each first CCO module, and obtain an SNR value of each first CCO module based on the HRF message.

[0019] Specifically, after accessing the power grid, the STA module monitors the HRF message in the network and defines the CCO module corresponding to the HRF message that can be received as the first CCO module. Specifically, the STA module can receive the HRF message sent by each first CCO module, so that the SNR (signal-to-noise ratio) value of the corresponding first CCO module can be obtained based on the HRF message. It should be noted that the SNR value of a first CCO module refers to the SNR value of the HRF message sent by the first CCO module received by the STA module.

[0020] In the embodiment of the present application, STA can obtain the SNR value of the corresponding CCO module based on the HRF message, and the SNR value reflects the relative strength of the signal and noise when STA receives the HRF message of CCO. In wireless communication, as the transmission distance increases, the signal strength will gradually decay, while the noise interference may be relatively enhanced, and the SNR value will usually decrease with the increase of the distance between STA and CCO; therefore, the size of the SNR value based on the HRF message can reflect the attenuation of the signal during the transmission process and the degree of interference by noise, thereby indirectly reflecting the relative distance between STA and CCO. When STA receives signals from multiple CCOs, the CCOs in the same area are generally close, and the corresponding SNR value is usually high, so that the STA module can be judged based on the SNR to which CCO module is located. Since the HPLC message is transmitted through the power line, its SNR value is easily affected by various interferences on the power line, including but not limited to electromagnetic noise, impedance changes, and electrical characteristics of the connected power equipment. These interference factors may cause the SNR value of the HPLC message to be inaccurate, and it is difficult to truly reflect the signal quality. In contrast, HRF messages are transmitted wirelessly, and their transmission path does not rely on power lines. Therefore, interference on the power lines can be effectively avoided. That is, the SNR value of the HRF message is more relevant in reflecting the signal quality.

[0021] As an optional specific implementation manner, the HRF message is an HRF central beacon frame; specifically, S1 includes: receiving the HRF central beacon frame periodically sent by each first CCO module; Calculate the SNR value of each HRF central beacon frame; An SNR average value is obtained according to the SNR values ​​of a preset number of HRF central beacon frames; the SNR average value is the SNR value of the first CCO module.

[0022] In the embodiment of the present application, by receiving the HRF central beacon frame periodically sent by the first CCO module, the SNR value of each HRF central beacon frame can be continuously obtained, and by calculating the average value of a preset number of SRN values, a more accurate SNR value of the first CCO module can be obtained. In the embodiment of the present application, by calculating the SNR average value, the deviation of the SNR value caused by the jitter of the HRF message data is prevented; on the other hand, the HRF central beacon frame is repeatedly sent periodically, and the continuous reception of the HRF central beacon frame is equivalent to sliding window processing of the HRF message. The corresponding time window is the length of a central beacon frame, and the sliding supplement is the time interval between two central beacon frames. By calculating the average value of the SNR value of the data of the preset number of time windows, the error of the SNR value is reduced, and a more accurate SNR value can be obtained. As an optional specific implementation, the preset number is greater than or equal to 30, that is, the cumulative number of central beacon frames received reaches more than 30 times.

[0023] S2. Receive the area collection HPLC message sent by each second CCO module, collect the corresponding power frequency zero-crossing data based on each area collection HPLC message, and obtain the first zero-crossing data sequence corresponding to each second CCO module.

[0024] Specifically, when it is necessary to identify the substation, the CCO of each substation sends a substation collection HPLC message, each STA module monitors the substation collection HPLC message in the network, and defines the CCO module corresponding to the substation collection HPLC message that can be received as the second CCO module. Specifically, the STA module can receive the substation collection HPLC message sent by each second CCO module, so as to start collecting the corresponding power frequency zero-crossing data according to the zero-crossing data collection time specified in each substation collection HPLC message, and obtain the corresponding first zero-crossing data sequence. It should be noted that the first zero-crossing data sequence is a zero-crossing data sequence obtained after the power frequency zero-crossing data collected by the HPLC message. If there are multiple second CCO modules, there are multiple first zero-crossing data data, that is, each second CCO module has a corresponding first zero-crossing data sequence. For example, STA receives the first substation collection HPLC message sent by CCO1, and then obtains the first zero-crossing data corresponding to CCO1 according to the HPLC message; receives the second substation collection HPLC message sent by CCO2, and then obtains the first zero-crossing data corresponding to CCO2 according to the HPLC message. In power communication, the power frequency zero-crossing data is the data when the alternating current crosses the zero point in its sine waveform. In the same substation, since the CCO module and the STA module are connected to the same power live wire, the power frequency zero-crossing data trends of the modules in the same substation are similar, so they can be used for substation identification. It should be noted that each STA module and CCO module in the power grid system are connected through power lines, and each STA module and CCO module can transmit HPLC messages through power lines or HRF messages wirelessly.

[0025] In an embodiment of the present application, after the STA module receives a station area collection HPLC message sent by a second CCO module, it will synchronize its own NTB to the NTB of the second CCO module according to the station area collection HPLC message of the second CCO module, and collect a specified number of industrial frequency zero-crossing data at the start time of zero-crossing data collection specified by the station area collection HPLC message, wherein the NTB value at the start time is used as a reference, and each subsequent zero-crossing NTB is calculated as a difference with the previous NTB, and the difference series finally calculated is the first zero-crossing data series.

[0026] S3. Receive the zero-crossing data sequence sent by each second CCO module, and obtain the second zero-crossing data sequence corresponding to each second CCO module.

[0027] Specifically, the second CCO module collects the power frequency zero-crossing data at the specified zero-crossing data collection start time according to the station area collection HPLC message sent by itself, and obtains its own zero-crossing data sequence. The zero-crossing data obtained by the second CCO module is the second zero-crossing data sequence. The second CCO module broadcasts its own zero-crossing data sequence, and the STA receives and obtains the second zero-crossing data sequence corresponding to each second CCO module. It should be noted that, whether it is a STA module or a CCO module, the collection of power frequency zero-crossing data is based on the specified zero-crossing data collection start time in the station area collection HPLC message. For example, when the CCO module sends the station area collection HPLC message, the start time information will be carried in the message. After sending, the CCO module collects its own power frequency zero-crossing data according to the start time. After receiving the HPLC message, the STA obtains the start time information, thereby also collecting its own power frequency zero-crossing data at the start time.

[0028] S4. Perform similarity analysis on the first zero-crossing data sequence and the second zero-crossing data sequence corresponding to each second CCO module to obtain a similarity analysis result.

[0029] In the power grid system, the zero-crossing time deviation of the HPLC carrier node in the same area is small, and the zero-crossing time deviation of the carrier nodes in different areas is large due to the load, noise and other power line environment differences in different areas. Therefore, the NTB information at the zero-crossing time is collected by each node for similarity analysis, so that the area to which the STA module belongs can be judged based on the similarity result. In the embodiment of the present application, STA performs similarity analysis on the first zero-crossing data sequence and the second zero-crossing data sequence corresponding to each second CCO module, so as to obtain the similarity analysis result corresponding to each second CCO module, specifically, the similarity result is similar or dissimilar, and the specific similarity analysis can be performed by methods such as cross-correlation calculation and cosine similarity, and the present application is not limited. For example, the STA module performs similarity analysis on the first zero-crossing data sequence and the second zero-crossing data sequence corresponding to CCO1, CCO2, and CCO3 respectively, and the result shows that the similarity analysis results corresponding to CCO1 and CCO2 are similar, and the similarity analysis results corresponding to CCO3 are dissimilar, then the STA module may belong to the same area as the CCO1 module or the CCO2 module.

[0030] S5. Obtain a station area identification result based on the similarity analysis result and the SNR value of each first CCO module.

[0031] The similarity analysis result is based on the principle that the trend of the power frequency zero-crossing data in the same substation is similar to identify the substation area. It is identified from the perspective of the HPLC signal transmitted by the power line, but the crosstalk on the power line will affect the accuracy of the identification; and the SNR value is based on the HRF signal transmitted by wireless mode. The HRF signal will also have interference and affect the accuracy of the identification. In the embodiment of the present application, the similarity analysis result and the SNR value of the HRF signal are combined, thereby integrating the advantages of power line identification and wireless identification, and utilizing the complementarity of power line identification and wireless identification, which can significantly improve the accuracy and reliability of identification. It should be noted that the HPLC message sent by the CCO received by the STA will also have an SNR value. However, since the HPLC signal is also transmitted through the power line, the factors affecting its SNR value are similar to those of the power frequency data. Therefore, even if the SNR value of the HPCL signal and the power frequency data are fused, the accuracy of recognition cannot be improved. On the contrary, due to the significant differences in physical characteristics between wireless transmission and power line transmission, the SNR value of the HRF signal is affected by factors different from those of the HPLC signal. When factors such as crosstalk on the power line reduce the accuracy of substation identification, the SNR value of the HRF signal can be used for supplementary identification, thereby improving the accuracy and reliability of substation identification.

[0032] As an optional specific implementation, S5 includes: If in the similarity analysis result, only the first zero-crossing data sequence corresponding to a certain second CCO module is similar to the second zero-crossing data sequence, then the STA module belongs to the station area where the second CCO module is located; If there are multiple first zero-crossing data sequences and second zero-crossing data sequences corresponding to the second CCO modules in the similarity analysis result that are similar, the station area to which the STA belongs is determined according to the SNR value of each CCO module.

[0033] In an embodiment of the present application, if only one zero-crossing data sequence corresponding to a certain second CCO module is similar to the second zero-crossing data sequence in the similarity analysis result, it indicates that the crosstalk of the power frequency zero-crossing data between multiple stations is relatively slight. At this time, based on the principle that the power frequency data trends in the same station area are similar, it can be determined that the STA module belongs to the station area where the second CCO module is located; if the first zero-crossing data sequence corresponding to multiple second CCO modules is similar to the second zero-crossing data sequence in the similarity analysis result, it indicates that the crosstalk of the power frequency zero-crossing data between multiple stations is relatively serious, resulting in the power frequency zero-crossing data of the neighboring network being similar to the power frequency zero-crossing data of the current network. At this time, the station area cannot be accurately identified based only on the similarity analysis result, but supplementary identification is performed based on the SNR value of the first CCO module, thereby improving the accuracy of the station area identification. It should be noted that HPLC crosstalk factors include common zero line crosstalk and spatial coupling crosstalk. Specifically, the power line laying plan is not unified, the physical lines are complicated, and it is easy to cause spatial coupling of electromagnetic fields. At the same time, the neutral line is shared between transformers in the substation area, and the different user loads in different periods of the low-voltage power grid cause different line impedances, resulting in different trends in the power frequency zero-crossing cycle, thus causing crosstalk. On the other hand, crosstalk not only leads to inaccurate substation identification based on power frequency zero-crossing data, but also leads to inaccurate SNR value identification based on HPLC signals.

[0034] As an optional specific implementation, if there are multiple first zero-crossing data sequences and second zero-crossing data sequences corresponding to the second CCO modules in the similarity analysis result that are similar, judging the station area to which the STA belongs according to the SNR value of each CCO module includes: The station area where the CCO module corresponding to the highest SNR value among the SNR values ​​of the third CCO modules is located is determined as the station area to which the STA module belongs.

[0035] The third CCO module is a module in the first CCO module that overlaps with the plurality of second CCO modules.

[0036] In an embodiment of the present application, when there are multiple first zero-crossing data sequences and second zero-crossing data sequences corresponding to the second CCO modules that are similar in the similarity analysis results, by comparing the SNR values ​​of the third CCO modules among these similar modules, it is determined that the substation where the third CCO module with the highest SNR value is located is the substation to which the STA module belongs, so that when the power frequency zero-crossing data cannot effectively determine the substation to which it belongs, the judgment basis is supplemented according to the SNR value of the wireless signal, thereby improving the accuracy of substation identification. It should be noted that the CCO module with the highest SNR value is often physically closer to the STA module, or has less interference on the signal transmission path, and therefore is more likely to belong to the same substation. In an embodiment of the present application, the SNR value of the HRF signal is used to supplement the identification of the substation, thereby improving the accuracy and reliability of the identification of the STA module substation.

[0037] As an optional specific implementation manner, after S5, the method further includes: The area identification result is sent to the CCO module corresponding to the area to which the STA module belongs.

[0038] In the embodiment of the present application, the power line frequency zero-crossing data and the SNR information of the HRF message are combined to achieve accurate identification of the STA module, thereby improving the accuracy and reliability of identification. At the same time, the area identification method of the embodiment of the present application has a wide range of applications, is not limited by factors such as the type of electric meter and the scale of the area, and is applicable to power systems of various sizes and different types of electric meters.

[0039] It should be understood that although Figure 1 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figure 1 At least part of the steps may include multiple steps or multiple stages. These steps or stages are not necessarily performed at the same time, but can be performed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed in turn or alternately with other steps or at least part of the steps or stages in other steps.

[0040] Figure 2 Schematic diagram of a low voltage area identification device based on dual-mode communication applied to a STA module provided in an embodiment of the present application. Figure 2 As shown, the low voltage area identification device 200 of the embodiment of the present application includes: The SNR value calculation unit 201 is used to receive the HRF message sent by each first CCO module, and obtain the SNR value of each first CCO module based on the HRF message; The first zero-crossing data calculation unit 202 is used to receive the area collection HPLC message sent by each second CCO module, collect the corresponding power frequency zero-crossing data based on each area collection HPLC message, and obtain the first zero-crossing data sequence corresponding to each second CCO module; The second zero-crossing data calculation unit 203 is used to receive the zero-crossing data sequence sent by each second CCO module, and obtain the second zero-crossing data sequence corresponding to each second CCO module; A similarity result judging unit 204 is used to perform similarity analysis on the first zero-crossing data sequence and the second zero-crossing data sequence corresponding to each second CCO module to obtain a similarity analysis result; The station area identification and judgment unit 205 is used to obtain a station area identification result based on the similarity analysis result and the SNR value of each first CCO module.

[0041] Optionally, receiving an HRF message sent by each first CCO module, and obtaining an SNR value of each first CCO module based on the HRF message includes: receiving the HRF central beacon frame periodically sent by each first CCO module; Calculate the SNR value of each HRF central beacon frame; An SNR average value is obtained according to the SNR values ​​of a preset number of HRF central beacon frames; the SNR average value is the SNR value of the first CCO module.

[0042] Optionally, obtaining the station area identification result based on the similarity analysis result and the SNR value of each first CCO module includes: If in the similarity analysis result, only the first zero-crossing data sequence corresponding to a certain second CCO module is similar to the second zero-crossing data sequence, then the STA module belongs to the station area where the second CCO module is located; If there are multiple first zero-crossing data sequences and second zero-crossing data sequences corresponding to the second CCO modules in the similarity analysis result that are similar, the station area to which the STA belongs is determined according to the SNR value of each CCO module.

[0043] Optionally, if there are multiple first zero-crossing data sequences and second zero-crossing data sequences corresponding to the second CCO modules in the similarity analysis result that are similar, judging the station area to which the STA belongs according to the SNR value of each CCO module includes: The station area where the CCO module corresponding to the highest SNR value among the SNR values ​​of the third CCO modules is located is determined as the station area to which the STA module belongs.

[0044] The third CCO module is a module in the first CCO module that overlaps with the plurality of second CCO modules.

[0045] The embodiment of the present application further provides a computer-readable storage medium storing instructions, which, when executed by a processor of an electronic device, enable the electronic device to execute the steps in the low-voltage area identification method based on dual-mode communication in any of the above embodiments.

[0046] The embodiments of the present application may be systems, methods and / or computer program products. The computer program product may include a computer-readable storage medium on which computer-readable program instructions are loaded for causing a processor to implement various aspects of the present application. In some embodiments, by using the state information of the computer-readable program instructions to personalize an electronic circuit, such as a programmable logic circuit, a field programmable gate array (FPGA) or a programmable logic array (PLA), the electronic circuit may execute the computer-readable program instructions to implement various aspects of the present application.

[0047] Computer readable storage medium can adopt any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. Computer readable storage medium is a tangible device that can keep and store instructions used by an instruction execution device. The readable storage medium can include, for example, but is not limited to, a system, device or device of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples (non-exhaustive list) of readable storage medium include: portable computer disk, hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disk read-only memory (CD-ROM), digital versatile disk (DVD), memory stick, floppy disk, mechanical encoding device, such as a punch card or a protruding structure in a groove on which instructions are stored, and any suitable combination of the above.

[0048] Various aspects of the present application are described herein with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present application. It should be understood that each box in the flowchart and / or block diagram and the combination of boxes in the flowchart and / or block diagram can be implemented by computer-readable program instructions.

[0049] An embodiment of the present application also provides an electronic device. Figure 3 The structure diagram of an electronic device provided in an embodiment of the present application is shown. As shown in the figure, the electronic device 300 includes: one or more processors 301 and a memory 302; the memory 302 stores computer executable instructions; the processor 301 is used to execute the computer executable instructions to implement the steps in the low-voltage area identification method based on dual-mode communication as in any of the above embodiments.

[0050] The processor 301 may be a central processing unit (CPU) or other forms of processing units having data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device to perform desired functions.

[0051] The memory 302 may include one or more computer program products, and the computer program products may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. Volatile memory may include, for example, random access memory (RAM) and / or cache memory (cache), etc. Non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 301 may execute the program instructions to implement the steps in the text recognition method of each embodiment of the present application described above and / or other desired functions.

[0052] In one example, the electronic device 300 may further include: an input device and an output device, and these components are interconnected via a bus system and / or other forms of connection mechanisms (not shown in the figure).

[0053] In addition, the input device may also include, for example, a keyboard, a mouse, a microphone, etc. The output device may output various information to the outside, and may include, for example, a display, a speaker, a printer, a communication network and a remote output device connected thereto, and the like.

[0054] Of course, to simplify, Figure 3 Only a part of the components related to the present application in the electronic device 300 is shown, and components such as a bus, an input device / output interface, etc. are omitted. In addition, according to specific application conditions, the electronic device 300 may also include any other appropriate components.

[0055] It should be noted that the embodiments of the low-voltage substation area identification method based on dual-mode communication, the low-voltage substation area identification device based on dual-mode communication, the computer-readable storage medium embodiment and the electronic device embodiment provided in the embodiments of the present application belong to the same concept; the technical features in the technical solutions recorded in each embodiment can be arbitrarily combined without conflict.

[0056] It should be understood that the above embodiments are exemplary and are not intended to include all possible implementations included in the claims. Various modifications and changes may be made on the basis of the above embodiments without departing from the scope of the present disclosure. Similarly, the various technical features of the above embodiments may be arbitrarily combined to form other embodiments of the present invention that may not be explicitly described. Therefore, the above embodiments only express several implementations of the present invention and do not limit the scope of protection of the patent of the present invention.

Claims

1. A low voltage area identification method based on dual-mode communication, applied to STA module, characterized in that: The method comprises: Receiving an HRF message sent by each first CCO module, and obtaining an SNR value of each first CCO module based on the HRF message; Receive the area collection HPLC message sent by each second CCO module, collect the corresponding power frequency zero-crossing data based on each area collection HPLC message, and obtain the first zero-crossing data sequence corresponding to each second CCO module; Receiving the zero-crossing data sequence sent by each second CCO module, and obtaining the second zero-crossing data sequence corresponding to each second CCO module; Performing similarity analysis on the first zero-crossing data sequence and the second zero-crossing data sequence corresponding to each second CCO module to obtain a similarity analysis result; Based on the similarity analysis result and the SNR value of each first CCO module, a station area identification result is obtained.

2. The low voltage area identification method based on dual-mode communication according to claim 1, characterized in that: Based on the similarity analysis result and the SNR value of each first CCO module, a station area identification result is obtained, including: If in the similarity analysis result, only the first zero-crossing data sequence corresponding to a certain second CCO module is similar to the second zero-crossing data sequence, then the STA module belongs to the station area where the second CCO module is located; If there are multiple first zero-crossing data sequences and second zero-crossing data sequences corresponding to the second CCO modules in the similarity analysis result that are similar, the station area to which the STA belongs is determined according to the SNR value of each first CCO module.

3. The low voltage area identification method based on dual-mode communication according to claim 2, characterized in that: The determining the station area to which the STA belongs according to the SNR value of each CCO module includes: The station area where the CCO module corresponding to the highest SNR value among the SNR values ​​of the third CCO modules is located is determined as the station area to which the STA module belongs; wherein the third CCO module is a module in the first CCO module that overlaps with the multiple second CCO modules.

4. The low voltage area identification method based on dual-mode communication according to claim 1, characterized in that: Receiving an HRF message sent by each first CCO module, and obtaining an SNR value of each first CCO module based on the HRF message, including: receiving the HRF central beacon frame periodically sent by each first CCO module; Calculate the SNR value of each HRF central beacon frame; An SNR average value is obtained according to the SNR values ​​of a preset number of HRF central beacon frames; the SNR average value is the SNR value of the first CCO module.

5. The low voltage area identification method based on dual-mode communication according to claim 1, characterized in that: After obtaining the station area identification result based on the similarity analysis result and the SNR value of each first CCO module, the method further includes: The station area identification result is sent to the CCO module corresponding to the station area to which the STA module belongs.

6. A low-voltage area identification device based on dual-mode communication, applied to the STA module, characterized in that: The device comprises: An SNR value calculation unit, configured to receive an HRF message sent by each first CCO module, and obtain an SNR value of each first CCO module based on the HRF message; A first zero-crossing data calculation unit is used to receive the HPLC message sent by each second CCO module, collect the corresponding power frequency zero-crossing data based on each HPLC message, and obtain the first zero-crossing data sequence corresponding to each second CCO module; A second zero-crossing data calculation unit, used for receiving the zero-crossing data sequence sent by each second CCO module, and obtaining a second zero-crossing data sequence corresponding to each second CCO module; A similarity result judgment unit is used to perform similarity analysis on the first zero-crossing data sequence and the second zero-crossing data sequence corresponding to each second CCO module to obtain a similarity analysis result; The station area identification and judgment unit is used to obtain a station area identification result based on the similarity analysis result and the SNR value of each first CCO module.

7. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores instructions, and when the instructions are executed by a processor of an electronic device, the electronic device is enabled to execute the low-voltage area identification method based on dual-mode communication as described in any one of claims 1 to 5 above.

8. An electronic device, characterized in that: The electronic device comprises: processor; memory for storing computer executable instructions; The processor is used to execute the computer executable instructions to implement the low-voltage area identification method based on dual-mode communication as described in any one of claims 1 to 5 above.

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