Electric power Beidou multichannel expansion system, method, device and medium

Abstract

The invention discloses an electric power Beidou multichannel expansion system, method and device and a medium. The system comprises a data receiving and processing unit, a self-checking unit and a channel selection unit. The data receiving and processing unit is used for receiving protocol instruction information sent by a power distribution network master station and analyzing and processing the protocol instruction information to obtain cache queue data; the self-inspection unit is used for self-inspection of the device and self-inspection of port connection equipment of a plurality of Beidou No.3 short message communication equipment connected with the system to obtain working state information of each port channel; and the channel selection unit is used for selecting a target port channel according to the working state information of each port channel acquired by the self-checking unit. According to the invention, an original single-path Beidou No.3 short message communication device is expanded into a multi-path Beidou No.3 short message communication device, so that the problem that the communication frequency is limited when the Beidou No.3 short message communication technology is applied to an automatic feeder terminal of a power distribution network is solved.

Description

Technical Field

[0001] This invention relates to the field of multi-channel expansion technology, and in particular to a power grid BeiDou multi-channel expansion system, method, equipment and medium. Background Technology

[0002] In distribution network systems, feeder terminals (FTUs) play a crucial role. An FTU is an intelligent terminal device installed next to the feeder switch, possessing remote control, telemetry, remote signaling, and fault detection functions. It communicates with the distribution automation master station, providing information on the distribution system's operating status and various parameters, as well as information required for monitoring and control, including switch status, power parameters, phase-to-phase faults, ground faults, and parameters during faults. The FTU can execute commands issued by the distribution master station to adjust and control distribution equipment, achieving functions such as fault location, fault isolation, and rapid restoration of power supply to non-faulty areas.

[0003] The distribution network is the most widely distributed network in the power grid system. Within the coverage area of ​​mobile networks, FTUs can communicate with the distribution network master station via mobile networks. However, in areas not covered by mobile networks, communication with the distribution network master station requires the use of BeiDou-3 short message communication equipment. Due to system capacity limitations, although BeiDou-3 short message communication equipment offers improvements in single-message length compared to the BeiDou-2 system, its frequency remains strictly limited. Therefore, the widespread application of BeiDou-3 short message communication in FTU equipment communication remains challenging. Summary of the Invention

[0004] In view of the aforementioned existing problems, the present invention is proposed.

[0005] Therefore, this invention provides a power grid BeiDou multi-channel extension system, method, device, and medium to solve the problem in existing methods where limited communication frequency prevents frequent interaction between the distribution network automation feeder terminal and the distribution network master station, thus hindering the widespread application of BeiDou-3 short message communication technology in distribution network automation feeder terminals.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: In a first aspect, the present invention provides a power grid BeiDou multi-channel expansion system, comprising a data receiving and processing unit, a self-testing unit, and a channel selection unit: the data receiving and processing unit is used to receive protocol instruction information sent by the distribution network master station, parse and process the protocol instruction information to obtain cached queue data; the self-testing unit is used to perform self-testing on the device itself and port connection device self-testing on multiple BeiDou-3 short message communication devices connected to the system, and obtain the working status information of each port channel; the channel selection unit is used to select a target port channel according to the working status information of each port channel obtained by the self-testing unit, and send the cached queue data to the distribution network automation feeder terminal through the target port channel.

[0007] As a preferred embodiment of the power Beidou multi-channel extension system described in this invention, the step of the data receiving and processing unit parsing the protocol instruction information includes: performing 101 protocol parsing on the protocol instruction information to extract the data instructions to be transmitted from the protocol instruction information; packaging the data instructions according to the Beidou-3 short message civilian communication protocol to obtain cache queue data; and storing the cache queue data in the data cache queue for transmission.

[0008] As a preferred embodiment of the power BeiDou multi-channel expansion system described in this invention, the self-testing step of the device itself includes: setting a correct voltage range, checking the device input voltage, and determining whether the device input voltage is within the correct voltage range; when the device input voltage is within the correct voltage range, checking the output voltage to each BeiDou-3 short message communication device, and determining whether the input voltage of each BeiDou-3 short message communication device is normal; and checking the operating status at the nodes of the device's main control module, and determining whether the operating status is normal.

[0009] The beneficial effects of this preferred technical solution are as follows: by setting the correct voltage range and sequentially checking the device input voltage, the output voltage to the Beidou-3 short message communication equipment, and the operating status of the main control module, the device itself is ensured to be in normal operating condition, thereby improving the stability and reliability of the system.

[0010] As a preferred embodiment of the power BeiDou multi-channel expansion system described in this invention, the step of self-testing the port connection devices includes: sending interactive commands to each port to query whether the BeiDou-3 short message communication devices connected to each port are in normal working condition; sending power query commands to each port to obtain the signal power information of the BeiDou-3 short message communication devices connected to each port; sending card query commands to each port to obtain the BeiDou card information of the BeiDou-3 short message communication devices connected to each port; and generating working status information of each port channel based on the normal working condition, signal power information, and BeiDou card information of each port.

[0011] The beneficial effects of this preferred technical solution are as follows: by sending interactive commands, power query commands, and card query commands to each port, the working status, signal power information, and BeiDou card information of the BeiDou-3 short message communication devices connected to each port can be obtained, thereby achieving comprehensive detection of multiple BeiDou-3 short message communication devices.

[0012] As a preferred embodiment of the power Beidou multi-channel expansion system described in this invention, the step of selecting a target port channel based on the working status information of each port channel obtained by the self-test unit includes: filtering out port channels in normal working condition from all port channels based on the working status information of each port channel; excluding port channels whose communication frequency is occupied from the port channels in normal working condition to obtain port channels with available communication frequency; and selecting a target port channel from the port channels with available communication frequency based on the communication length of the port channel with available communication frequency and the data length of the buffer queue data.

[0013] The beneficial effect of this preferred technical solution is that by filtering port channels that are in normal working condition and excluding port channels whose communication frequency is occupied, data is avoided from being sent to faulty channels or channels with limited frequency.

[0014] As a preferred embodiment of the power Beidou multi-channel expansion system of the present invention, the step of selecting a target port channel from the available communication frequency port channels includes: filtering out port channels whose communication length is greater than or equal to the data length of the cache queue data from the available communication frequency port channels; and selecting the port channel with the smallest similarity between the communication length and the data length of the cache queue data from the filtered port channels as the target port channel.

[0015] As a preferred embodiment of the power Beidou multi-channel expansion system described in this invention, the step of selecting the target port channel further includes: when there are multiple port channels with the same communication length, the port channel with the highest communication frequency is selected as the target port channel; when there are port channels with the same communication length and communication frequency, the port channel with the smallest port number is selected as the target port channel.

[0016] The beneficial effects of this preferred technical solution are as follows: by selecting the port channel with the smallest similarity between the communication length and the data length of the cache queue data, and prioritizing the port channel with the highest communication frequency when the communication length is the same, and selecting the port channel with the smallest port number when both the communication length and communication frequency are the same, the rational allocation of Beidou-3 short message communication resources is achieved, the waste of communication resources is avoided, and the overall communication frequency is improved.

[0017] Secondly, the present invention provides a power grid BeiDou multi-channel expansion method, comprising the following steps: receiving protocol instruction information sent by the distribution network master station; parsing the protocol instruction information to extract the data instruction to be transmitted; packaging the data instruction to obtain cache queue data; performing self-testing on the device itself and port connection device self-testing on multiple BeiDou-3 short message communication devices connected to the system to obtain the working status information of each port channel; selecting a target port channel from the port channels that are in normal working condition and whose communication frequency is not occupied, based on the obtained working status information of each port channel; and sending the cache queue data to the distribution network automation feeder terminal through the target port channel.

[0018] Thirdly, the present invention provides an electronic device, comprising: Memory and processor; The memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions. When the computer-executable instructions are executed by the processor, the steps of the power Beidou multi-channel extension system are implemented.

[0019] Fourthly, the present invention provides a computer-readable storage medium storing computer-executable instructions that, when executed by a processor, implement the steps of the power Beidou multi-channel extension system.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention expands the original single-channel Beidou-3 short message communication equipment into a multi-channel Beidou-3 short message communication equipment through the coordinated work of the data receiving and processing unit, the self-testing unit, and the channel selection unit. This solves the problem of limited communication frequency when Beidou-3 short message communication technology is applied to the distribution network automation feeder terminal, enabling the distribution network automation feeder terminal and the distribution network master station to interact frequently and meet the response time requirements of distribution network automation data acquisition and control.

[0021] The self-testing unit performs comprehensive testing on the device itself and the port connection equipment, and the channel selection unit selects the target port channel based on the working status information, communication length and communication frequency of each port channel. This enables the management and rational scheduling of multiple BeiDou-3 short message communication devices, improving the reliability and stability of BeiDou-3 short message communication. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall process of a power Beidou multi-channel expansion system according to an embodiment of the present invention. Detailed Implementation

[0024] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0025] Example 1, referring to Figure 1 As one embodiment of the present invention, a power grid BeiDou multi-channel extension system is provided, including a data receiving and processing unit, a self-testing unit, and a channel selection unit: The data receiving and processing unit is used to receive protocol instruction information sent by the distribution network master station, parse and process the protocol instruction information, and obtain cache queue data. The self-testing unit is used to perform self-testing on the device itself, as well as port connection device self-testing on multiple BeiDou-3 short message communication devices connected to this system, and to obtain the working status information of each port channel. The channel selection unit is used to select a target port channel based on the working status information of each port channel obtained by the self-test unit, and send the cache queue data to the distribution network automation feeder terminal through the target port channel.

[0026] It should be noted that the distribution network is the most widely distributed network in the power grid system. Distribution network automation feeder terminals, as intelligent terminal devices installed next to feeder switches, need frequent data communication with the distribution network master station to achieve functions such as remote control, telemetry, remote signaling, and fault detection. Within mobile network coverage areas, distribution network automation feeder terminals can communicate with the distribution network master station via mobile networks. However, in areas not covered by mobile networks, especially in mountainous and valley-filled terrain, there are numerous surface communication blind spots. Furthermore, freezing rain and overcast weather in winter can cause severe rain attenuation in 4G / 5G communications. In these cases, it is necessary to use BeiDou-3 short message communication equipment to communicate with the distribution network master station. However, due to system capacity limitations, the communication frequency of currently approved BeiDou cards is generally 30 or 60 seconds. According to relevant standards for distribution network automation data acquisition and control, distribution network automation feeder terminals must complete a response action within 15 seconds to switch control. The communication frequency of a single BeiDou-3 short message communication device cannot meet the actual usage requirements.

[0027] Therefore, addressing the aforementioned issue of limited frequency in BeiDou-3 short message communication, this invention utilizes a data receiving and processing unit to receive and parse protocol command information sent by the distribution network master station, obtaining buffer queue data. A self-testing unit performs comprehensive testing on the device itself and multiple BeiDou-3 short message communication devices connected to the system, acquiring the operating status information of each port channel. A channel selection unit selects the target port channel for data transmission based on the operating status information of each port channel, expanding the original single-channel BeiDou-3 short message communication device into a multi-channel BeiDou-3 short message communication device. This effectively improves the communication frequency when BeiDou-3 short message communication technology is applied to distribution network automation feeder terminals, enabling the distribution network automation feeder terminal and the distribution network master station to meet the requirement of completing a response action within 15 seconds. Simultaneously, the self-testing and channel selection mechanisms improve the reliability and stability of communication.

[0028] Example 2, refer to Figure 1 As an embodiment of the present invention, a power Beidou multi-channel extension system is provided based on the above embodiment.

[0029] In this embodiment of the application, the data receiving and processing unit is used to receive protocol instruction information sent by the distribution network master station, parse and process the protocol instruction information, and obtain cache queue data.

[0030] The steps of parsing the protocol instruction information by the data receiving and processing unit include A1 to A3: A1. Perform 101 protocol parsing on the protocol instruction information to extract the data instructions to be transmitted from the protocol instruction information.

[0031] After receiving the 101 protocol instruction information sent by the distribution network master station, the data receiving and processing unit first parses the 101 protocol frame structure, identifying various fields such as the frame header, control field, address field, link user data, and frame check sequence; then it parses the application service data unit in the link user data, extracting content such as type identifier, variable structure qualifier, transmission reason, common address, and information body; finally, it determines the instruction type based on the type identifier and extracts the data instructions to be transmitted from the information body, including remote control commands, remote adjustment commands, parameter setting commands, etc.

[0032] A2. Pack the data instructions according to the BeiDou-3 short message civilian communication protocol to obtain cache queue data.

[0033] For example, the extracted data instructions are encapsulated according to the frame format of the BeiDou-3 short message civil communication protocol. Protocol fields such as frame header identifier, message type, sender address, and receiver address are added in sequence. The data instructions are filled into the data content field, and the check code is calculated according to the protocol requirements and added to the end of the frame. After the packaging process is completed, cached queue data conforming to the BeiDou-3 short message civil communication protocol format is obtained.

[0034] A3. Store the cache queue data in the data cache queue and wait for it to be sent.

[0035] The cached queue data obtained after packaging is stored in the data cache queue according to the first-in-first-out principle. Information such as the data length, reception time and priority of each cached queue data is recorded. After the channel selection unit selects the target port channel according to the working status information of each port channel, the cached queue data is retrieved from the data cache queue in sequence for transmission.

[0036] In one optional implementation, step A1, which involves parsing the protocol instruction information using the 101 protocol, further includes integrity and legality verification of the protocol instruction information. Cyclic redundancy check (CRC) is performed on the received protocol instruction information using a frame check sequence to determine if any errors or data loss occurred during transmission. Simultaneously, the link address and common address in the address field are verified to determine if the protocol instruction information is a legitimate instruction sent to this device. Protocol instruction information that fails verification or has an address mismatch is discarded.

[0037] In this embodiment of the application, the self-testing unit is used to perform self-testing on the device itself and to perform port connection device self-testing on multiple BeiDou-3 short message communication devices connected to the system, and to obtain the working status information of each port channel.

[0038] The self-test steps for the device itself include B1 to B3: B1. Set the correct voltage range, check the device input voltage, and determine whether the device input voltage is within the correct voltage range.

[0039] Specifically, the upper and lower limits of the correct voltage range are set according to the rated operating voltage of the device. After the device is powered on, the voltage detection circuit collects the device input voltage in real time and compares the collected device input voltage value with the set correct voltage range to determine whether the device input voltage is within the correct voltage range. If the device input voltage is lower than the lower limit or higher than the upper limit, the device input voltage is determined to be abnormal, a voltage abnormality alarm message is generated, and the subsequent self-test process is stopped.

[0040] B2. When the device input voltage is within the correct voltage range, check the output voltage to each BeiDou-3 short message communication device to determine whether the input voltage of each BeiDou-3 short message communication device is normal.

[0041] Specifically, after confirming that the input voltage of the device is within the correct voltage range, the output voltage of each output port of the device is detected in sequence, and the output voltage value of each output port is compared with the rated input voltage of the Beidou-3 short message communication equipment. If the output voltage value of a certain output port exceeds the allowable input voltage range of the Beidou-3 short message communication equipment, it is determined that the input voltage of the Beidou-3 short message communication equipment corresponding to that output port is abnormal, and the port is marked as having an abnormal power supply status.

[0042] B3. Check the operating status of the nodes of the main control module of the device to determine whether the operating status is normal.

[0043] Specifically, the operating status of key nodes of the device's main control module is checked, including whether the operating frequency of the central processing unit is normal, whether memory read and write is normal, whether the watchdog timer is working properly, and whether the communication interface is initialized. If the operating status of a certain key node is detected to be abnormal, a software reset operation is performed on the device's main control module, and the operating status check is performed again after the reset. If the operating status is still abnormal after multiple resets, a fault alarm message for the main control module is generated.

[0044] In one optional implementation, step B1, which checks the device input voltage, also includes detecting the stability of the input voltage. The device input voltage is sampled multiple times consecutively within a set detection time window, and the fluctuation range of the sampled values ​​is calculated. If the fluctuation range exceeds a set stability threshold, the device input voltage is determined to be unstable, a voltage instability alarm is generated, and the subsequent self-test process is performed only after the input voltage stabilizes. This avoids malfunctions of the device or BeiDou-3 short message communication equipment due to voltage fluctuations.

[0045] It's also important to know that the steps for performing a self-test on a port-connected device include C1 through C4: C1. Send interactive commands to each port to check whether the BeiDou-3 short message communication equipment connected to each port is in normal working condition.

[0046] Specifically, the self-test unit sequentially sends interactive commands to each port, waiting for the BeiDou-3 short message communication equipment connected to each port to return response information. If a port does not receive a response information within the set timeout period, it is determined that the BeiDou-3 short message communication equipment connected to that port is not working properly or the connection is interrupted, and the port is marked as an abnormal device state. If a response information is received, the device status code in the response information is parsed to determine whether the BeiDou-3 short message communication equipment connected to that port is in a normal working state.

[0047] C2. Send a query power command to each port to obtain the signal power information of the Beidou-3 short message communication equipment connected to each port.

[0048] Specifically, the self-test unit sends a power query command to each port that is in normal working condition. After receiving the power query command, the Beidou-3 short message communication equipment connected to each port detects the current signal power of communicating with the Beidou satellite and returns the signal power information to the self-test unit. The self-test unit receives and records the signal power information of the Beidou-3 short message communication equipment connected to each port, which is used to prioritize the port channel with good signal power when selecting channels in the future.

[0049] C3. Send a card query command to each port to obtain the BeiDou card information of the BeiDou-3 short message communication equipment connected to each port.

[0050] The self-test unit sends a card check command to each port that is in normal working condition. After receiving the card check command, the Beidou-3 short message communication device connected to each port reads the card number, communication length, and communication frequency of its built-in Beidou card and returns the Beidou card information to the self-test unit. The self-test unit receives and records the Beidou card information of the Beidou-3 short message communication device connected to each port. The communication length represents the maximum data length that the Beidou card can send in a single communication, and the communication frequency represents the shortest time interval required between two consecutive transmissions of the Beidou card.

[0051] C4. Generate the working status information of each port channel based on the normal working status, signal power information and Beidou card information of each port.

[0052] The self-test unit summarizes the self-test results of each port, integrates the normal working status, signal power information and Beidou card information of each port to generate working status information of each port channel. The working status information includes fields such as port number, device working status, signal power level, Beidou card communication length, Beidou card communication frequency and current frequency occupancy status. The generated working status information of each port channel is stored in the status information table for the channel selection unit to call when selecting the target port channel.

[0053] In one optional implementation, the port connection device self-test in steps C1 to C4 is performed periodically. The self-test unit performs self-tests on each port connection device at set intervals, updating the working status information of each port channel in real time. When a BeiDou-3 short message communication device connected to a certain port malfunctions or its signal power decreases, the unit can promptly detect and update the working status information of that port channel, ensuring that the channel selection unit always selects the target port channel based on the latest working status information.

[0054] In this embodiment of the application, the channel selection unit is used to select a target port channel based on the working status information of each port channel obtained by the self-test unit, and send the cache queue data to the distribution network automation feeder terminal through the target port channel.

[0055] The steps for selecting the target port channel based on the working status information of each port channel obtained by the self-test unit include D1~D3: D1. Based on the working status information of each port channel, filter out the port channels that are in normal working status from all port channels.

[0056] Specifically, the channel selection unit reads the working status information of each port channel from the status information table, and checks the device working status field of each port channel in turn; it adds the port channels whose device working status field shows normal to the candidate channel list, and excludes the port channels whose device working status field shows abnormal. After traversing all port channels, it obtains a candidate channel list consisting of port channels that are in normal working status.

[0057] D2. From the port channels that are in normal working condition, exclude the port channels whose communication frequency is occupied, and obtain the port channels with available communication frequency.

[0058] The channel selection unit checks the communication frequency occupancy status of each port channel in the candidate channel list and reads the current frequency occupancy status field of each port channel. If the current frequency occupancy status field of a port channel shows "occupancy", it means that the port channel has not yet reached the communication frequency time interval required by its Beidou card after the last transmission. The port channel is then removed from the candidate channel list. After the traversal is completed, the remaining port channels in the candidate channel list are the port channels with available communication frequencies.

[0059] D3. Select a target port channel from the available port channels based on the communication length of the available port channels and the data length of the cache queue data.

[0060] Specifically, the channel selection unit retrieves the cache queue data to be sent from the data cache queue, reads the data length of the cache queue data, and reads the Beidou card communication length of each port channel with available communication frequency. Based on the comparison and filtering of the data length of the cache queue data and the communication length of each port channel, the most suitable target port channel for sending the cache queue data is selected from the port channels with available communication frequency.

[0061] Specifically, the steps for selecting a target port channel from the available communication frequency channels include D3.1 to D3.4: D3.1 From the available port channels with the specified communication frequency, select port channels whose communication length is greater than or equal to the data length of the cache queue data.

[0062] The channel selection unit compares the data length of the buffer queue data with the communication length of each available port channel for each communication frequency, and selects port channels whose communication length is greater than or equal to the data length of the buffer queue data. The selected port channels are then combined into a set of port channels that meet the communication length requirements. If the communication length of all available port channels for each communication frequency is less than the data length of the buffer queue data, the buffer queue data needs to be packetized before being sent.

[0063] In an optional implementation, when the set of port channels selected in step D3.1 is an empty set, the step of packetizing the cache queue data includes: calculating the ratio between the data length of the cache queue data and the maximum communication length among the available port channels for communication frequency, and determining the number of packets based on the ratio; uniformly dividing the cache queue data according to the number of packets, and adding a packet sequence number and a total number of packets identifier to each packet; sequentially selecting the port channel with the longest communication length from the available port channels for communication frequency and sending each packet data until all packet data has been sent.

[0064] D3.1. Among the selected port channels, choose the port channel with the smallest similarity between the communication length and the data length of the buffer queue data as the target port channel.

[0065] The channel selection unit calculates the difference between the communication length of each port channel in the set of port channels that meet the communication length requirements and the data length of the buffer queue data, and selects the port channel with the smallest difference as the target port channel. By selecting the port channel with the smallest similarity between the communication length and the data length, the waste of communication resources can be reduced while meeting the data transmission requirements, and the port channel with the larger communication length can be reserved for transmitting buffer queue data with a larger data length.

[0066] D3.3 When there are multiple port channels with the same communication length, the port channel with the highest communication frequency shall be selected as the target port channel.

[0067] If multiple port channels in the set of port channels that meet the communication length requirement have the same difference between their communication length and the data length of the buffer queue, the channel selection unit further compares the communication frequency of these port channels and selects the port channel with the highest communication frequency as the target port channel. The highest communication frequency means that the time interval required between two consecutive transmissions of the Beidou card of that port channel is the shortest. Prioritizing the selection of the port channel with the highest communication frequency can enable that port channel to recover its usability as soon as possible and improve the overall communication efficiency of the system.

[0068] D3.4 When there are port channels with the same communication length and communication frequency, the port channel with the smallest port number shall be selected as the target port channel.

[0069] Specifically, if multiple port channels with the same communication length and frequency still exist after comparing the communication length and frequency, the channel selection unit selects the port channel with the smallest port number as the target port channel in ascending order of port number. Using the port number as the final selection criterion can ensure the consistency and determinism of the channel selection result under the same conditions and avoid the uncertainty caused by random selection.

[0070] In one optional implementation, when the available port channel for communication frequency obtained in step D2 is empty, the channel selection unit retains the currently pending data in the data buffer queue and does not process it temporarily. After the communication frequency occupancy status of any port channel is released, steps D1 to D3 are re-executed to select the target port channel for transmission. If there are multiple pending data in the data buffer queue, the target port channel is selected and transmitted in the first-in-first-out order.

[0071] In summary, this invention, through the coordinated operation of the data receiving and processing unit, the self-testing unit, and the channel selection unit, expands the original single-channel BeiDou-3 short message communication equipment into a multi-channel BeiDou-3 short message communication equipment. This solves the problem of limited communication frequency when BeiDou-3 short message communication technology is applied to distribution network automation feeder terminals, enabling frequent interaction between the distribution network automation feeder terminals and the distribution network master station, and meeting the response time requirements of distribution network automation data acquisition and control.

[0072] The self-testing unit performs comprehensive testing on the device itself and the port connection equipment, and the channel selection unit selects the target port channel based on the working status information, communication length and communication frequency of each port channel. This enables the management and rational scheduling of multiple BeiDou-3 short message communication devices, improving the reliability and stability of BeiDou-3 short message communication.

[0073] Example 3 illustrates a schematic scheme for a power grid BeiDou multi-channel extension system. It should be noted that the technical solution of this power grid BeiDou multi-channel extension method belongs to the same concept as the technical solution of the aforementioned power grid BeiDou multi-channel extension system. Details not described in detail in this embodiment can be found in the description of the aforementioned power grid BeiDou multi-channel extension system.

[0074] This embodiment also provides a method for extending the BeiDou multi-channel power system, including: The system receives protocol instruction information sent by the distribution network master station, parses and processes the protocol instruction information, extracts the data instructions to be transmitted, and packages the data instructions to obtain cache queue data. Perform self-test on the device itself, and perform port connection device self-test on multiple Beidou-3 short message communication devices connected to this system to obtain the working status information of each port channel; Based on the obtained working status information of each port channel, the target port channel is selected from the port channels that are in normal working status and whose communication frequency is not occupied. The cached queue data is sent to the distribution network automation feeder terminal through the target port channel.

[0075] This embodiment also provides an electronic device suitable for the multi-channel expansion of BeiDou navigation in power systems, comprising: a memory and a processor; the memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions to realize the multi-channel expansion system for power systems as proposed in the above embodiment.

[0076] This embodiment also provides a storage medium on which a computer program is stored. When the program is executed by a processor, it implements the power Beidou multi-channel extension system as proposed in the above embodiments.

[0077] The storage medium proposed in this embodiment and the method for realizing multi-channel expansion of BeiDou power system proposed in the above embodiments belong to the same inventive concept. Technical details not described in detail in this embodiment can be found in the above embodiments, and this embodiment has the same beneficial effects as the above embodiments.

[0078] Based on the above description of the implementation methods, those skilled in the art can clearly understand that the present invention can be implemented using software and necessary general-purpose hardware, and of course, it can also be implemented using hardware. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk, or optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of the various embodiments of the present invention.

[0079] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A power grid BeiDou multi-channel extension system, characterized in that, It includes a data receiving and processing unit, a self-testing unit, and a channel selection unit; The data receiving and processing unit is used to receive protocol instruction information sent by the distribution network master station, parse and process the protocol instruction information, and obtain cache queue data. The self-testing unit is used to perform self-testing on the device itself, as well as port connection device self-testing on multiple BeiDou-3 short message communication devices connected to this system, and to obtain the working status information of each port channel. The channel selection unit is used to select a target port channel based on the working status information of each port channel obtained by the self-test unit, and send the cache queue data to the distribution network automation feeder terminal through the target port channel.

2. The power grid BeiDou multi-channel extension system as described in claim 1, characterized in that, The steps of parsing and processing the protocol instruction information by the data receiving and processing unit include: The protocol instruction information is parsed using 101 protocol parsing to extract the data instructions to be transmitted from the protocol instruction information; The data instructions are packaged and processed according to the BeiDou-3 short message civilian communication protocol to obtain cache queue data; The cache queue data is stored in the data cache queue and awaits transmission.

3. The power grid BeiDou multi-channel expansion system as described in claim 2, characterized in that, The steps for performing a self-test on the device itself include: Set the correct voltage range, check the device input voltage, and determine whether the device input voltage is within the correct voltage range; When the device input voltage is within the correct voltage range, check the output voltage to each BeiDou-3 short message communication device to determine whether the input voltage of each BeiDou-3 short message communication device is normal. The operating status of the nodes of the main control module of the device is checked to determine whether the operating status is normal.

4. The power grid BeiDou multi-channel expansion system as described in claim 3, characterized in that, The steps for performing a self-test on a port-connected device include: Send interactive commands to each port to query whether the BeiDou-3 short message communication equipment connected to each port is in normal working condition; Send query power commands to each port to obtain the signal power information of the Beidou-3 short message communication equipment connected to each port; Send a card query command to each port to obtain the BeiDou card information of the BeiDou-3 short message communication device connected to each port; Based on the normal operating status, signal power information, and BeiDou card information of each port, the operating status information of each port channel is generated.

5. The power grid BeiDou multi-channel expansion system as described in claim 4, characterized in that, The steps for selecting the target port channel based on the working status information of each port channel obtained by the self-test unit include: Based on the working status information of each port channel, filter out the port channels that are in normal working status from all port channels; From the port channels that are in normal working condition, exclude the port channels whose communication frequency is occupied, and obtain the port channels with available communication frequency; The target port channel is selected from the available port channels based on the communication length of the available port channels and the data length of the cache queue data.

6. The power grid BeiDou multi-channel extension system as described in claim 5, characterized in that, The steps for selecting a target port channel from available communication frequencies include: From the available port channels with the specified communication frequency, select port channels whose communication length is greater than or equal to the data length of the cache queue data; Among the selected port channels, the port channel with the smallest similarity between the communication length and the data length of the cache queue data is selected as the target port channel.

7. The power grid BeiDou multi-channel extension system as described in claim 6, characterized in that, The step of selecting the target port channel also includes: When multiple port channels with the same communication length exist, the port channel with the highest communication frequency is selected as the target port channel. When there are port channels with the same communication length and frequency, the port channel with the smallest port number is selected as the target port channel.

8. A method for extending the BeiDou multi-channel range in power systems, using the system described in any one of claims 1-7, characterized in that, Includes the following steps: The system receives protocol instruction information sent by the distribution network master station, parses and processes the protocol instruction information, extracts the data instructions to be transmitted, and packages the data instructions to obtain cache queue data. Perform self-test on the device itself, and perform port connection device self-test on multiple Beidou-3 short message communication devices connected to this system to obtain the working status information of each port channel; Based on the obtained working status information of each port channel, the target port channel is selected from the port channels that are in normal working status and whose communication frequency is not occupied. The cached queue data is sent to the distribution network automation feeder terminal through the target port channel.

9. An electronic device, comprising: Memory and processor; The memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions. When the computer-executable instructions are executed by the processor, they implement the steps of the power Beidou multi-channel extension system according to any one of claims 1 to 7.

10. A computer-readable storage medium storing computer-executable instructions that, when executed by a processor, implement the steps of the power Beidou multi-channel extension system according to any one of claims 1 to 7.

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