Distributed online monitoring device data transmission system and method based on wireless collection

Abstract

The invention discloses a distributed on-line monitoring device data transmission system and method based on wireless collection, the system comprises a near-earth data transfer device, a control master station and distributed on-line monitoring devices arranged on three-phase overhead lines respectively, each distributed on-line monitoring device is installed on a certain phase of a high-voltage overhead line, and each distributed on-line monitoring device is connected with the control master station. The monitoring module is used for monitoring the running state of a corresponding-phase power line in real time and recording event data; the near-earth data transfer device is arranged on the earth surface below the overhead line and is used for establishing socket connection between each distributed online monitoring device and the control master station; and the control master station is used for monitoring the running state of each distributed online monitoring device, analyzing the recording data, remotely updating the program of each distributed online monitoring device and issuing a control command. According to the technical scheme, bidirectional real-time data transmission between the line distributed on-line monitoring device and the control master station can be flexibly and reliably realized.

Description

Technical Field

[0001] This invention belongs to the field of distributed online monitoring and communication technology for power grids, specifically relating to a data transmission system and method for distributed online monitoring devices based on wireless aggregation. Background Technology

[0002] With the development and improvement of the power grid structure, the construction of power lines has developed rapidly. Due to the variable operating environment of transmission lines, the large number of towers, the complex environment of the line corridor, and the year-round exposure to the outdoors, in addition to being subjected to severe natural weather, the probability of line tripping and forced power outages caused by external damage from human factors is also on the rise.

[0003] Due to the long length of the lines and the complex operating environment, it is impossible to monitor the operating status of the lines in real time, resulting in insufficient early warning capabilities for line faults. On the other hand, when a transmission line fault occurs, accurately locating the fault point can not only reduce the burden of manual line inspection, but also enable the line to quickly restore power supply and reduce economic losses caused by power outages.

[0004] Traditional fault location methods rely solely on the secondary voltage and current at both ends of the line at the substation, which has significant limitations. Distributed fault monitoring devices for transmission lines, installed directly on the conductors, can collect power frequency and traveling wave information from different locations on the line locally. This information is then transmitted wirelessly or via wired connection to the master analysis station, which locates the fault based on the line topology. This approach overcomes all the shortcomings of traditional substation-side fault location devices.

[0005] However, in sparsely populated areas such as deserts and mountains, there are often no 2G / 3G / 4G wireless signals. Distributed online monitoring devices cannot transmit data to the main station via these wireless methods. Furthermore, since the devices are suspended by wires, they cannot directly transmit data via wired connections. Therefore, there is an urgent need for a data transmission system and method that can flexibly and reliably achieve real-time two-way communication between distributed online monitoring devices and the main station. This case arises from this need. Summary of the Invention

[0006] The purpose of this invention is to provide a data transmission system and method for a distributed online monitoring device based on wireless aggregation, which can flexibly and reliably realize bidirectional real-time data transmission between the distributed online monitoring device and the control master station.

[0007] To achieve the above objectives, the solution of the present invention is:

[0008] A data transmission system for a distributed online monitoring device based on wireless aggregation includes a near-ground data relay device, a control master station, and distributed online monitoring devices installed on three-phase overhead lines. Each distributed online monitoring device is installed on a specific phase of the high-voltage overhead line to monitor the operating status of the corresponding phase of the power line in real time and record event data. The near-ground data relay device is located on the ground surface below the overhead line and is used to establish socket connections between each distributed online monitoring device and the control master station. The control master station is used to monitor the operating status of each distributed online monitoring device, analyze the recorded data, remotely update the programs of each distributed online monitoring device, and issue control commands.

[0009] The aforementioned distributed online monitoring device has a built-in LoRa module. The near-ground data relay device communicates with the distributed online monitoring device through the LoRa module and communicates with the control master station via TCP / IP through optical fiber.

[0010] The data transmission method of the distributed online monitoring device data transmission system based on wireless aggregation, as described above, includes the following steps:

[0011] Step 1: The distributed online monitoring device sends a request to join with its own unique identifier to the near-ground data relay device;

[0012] Step 2: The near-ground data relay device assigns a unique network port and IP address to the online monitoring device;

[0013] Step 3: The distributed online monitoring device and the near-ground data relay device communicate via LoRa near-field wireless communication and use a private protocol to encrypt and transmit the data sent by the online monitoring device to the control master station. The near-ground data relay device obtains the network port and IP assigned to it and sends the data to the control master station in TCP / IP protocol messages.

[0014] Step 4: The control master station sends TCP / IP protocol messages, which are parsed by the near-ground data relay device and then transmitted to the corresponding distributed online monitoring device.

[0015] In step 1 above, the distributed online monitoring device obtains its own processor's unique hardware ID and sends encrypted private protocol messages with the unique hardware ID identification code to the near-ground data relay device at fixed intervals via the LoRa network, requesting to join the communication network.

[0016] In step 2 above, the near-ground data relay device assigns a unique network port and IP address to the online monitoring device and replies with a message; after receiving the reply message from the near-ground data relay device, the distributed online monitoring device determines that the message is a reply to its own device through the unique hardware ID identification code in the reply message, and parses the network port and IP address assigned by the near-ground data relay device in the message.

[0017] After a long period of no communication between the aforementioned distributed online monitoring device and the near-ground data relay device, it will attempt to periodically send a request to join the communication network and will then transmit the data collected during the operation phase through the distributed online monitoring devices on the other phase lines.

[0018] In step 3 above, when multiple distributed online monitoring devices send messages to the near-ground data relay device concurrently, the near-ground data relay device integrates communication resources within a unit of time through the access scheduling mechanism and allocates the communication resources to each distributed online monitoring device according to different time slices.

[0019] In step 3 above, when there is no communication with a certain distributed online monitoring device for a long time, the near-ground data relay device automatically releases the socket connection allocated to the distributed online monitoring device.

[0020] A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor; when the processor executes the computer program, it implements the steps of the data transmission method of the distributed online monitoring device data transmission system based on wireless aggregation as described above.

[0021] A computer-readable storage medium storing a computer program; when executed by a processor, the computer program implements the steps of the data transmission method of the distributed online monitoring device data transmission system based on wireless aggregation as described above.

[0022] By adopting the above scheme, this invention achieves bidirectional data transmission between distributed online monitoring devices and the control master station by setting up a near-ground relay communication device. In this invention, the distributed online monitoring devices interact with the near-ground relay communication device through near-field wireless communication, and then the near-ground relay communication device communicates with the control master station through optical fiber. Data from multiple distributed online monitoring devices is transmitted through the near-ground data relay device. The near-ground data relay device establishes network routes between each monitoring device and the control master station, enabling real-time bidirectional data transmission between each monitoring device and the control master station even without 4G or other network communication. The system has scalability and deployment / deployment flexibility, enabling rapid, flexible, and reliable network deployment in multiple power grid application scenarios. It solves the deployment and system communication needs of distributed online monitoring devices in remote areas or areas without 2G / 3G / 4G wireless signal coverage. Attached Figure Description

[0023] Figure 1 This is an overall schematic diagram of the data transmission system of the present invention;

[0024] Figure 2 This is a flowchart of the program execution logic of a distributed online monitoring device;

[0025] Figure 3 This is a flowchart of the program operation logic of the near-ground data relay device. Detailed Implementation

[0026] The technical solution and beneficial effects of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] like Figure 1 As shown, this invention provides a data transmission system for a distributed online monitoring device based on wireless aggregation, comprising distributed online monitoring devices, a near-ground data relay device, and a control master station. There are three distributed online monitoring devices, each installed on a three-phase high-voltage overhead line, with short distances between them. The near-ground data relay device is installed on the ground beneath the overhead line, close to each of the distributed online monitoring devices. The distributed online monitoring devices are responsible for real-time monitoring of the power line's operating status, collecting power frequency and traveling wave information from different locations on the line. The near-ground data relay device establishes a socket connection between each monitoring device and the control master station, enabling bidirectional real-time data communication between the distributed online monitoring devices and the control master station. The control master station monitors the operating status of each distributed online monitoring device, analyzes the recorded wave data, and performs functions such as fault location based on the line topology, remotely updates the monitoring device program, and issues control commands.

[0028] In this embodiment, the distributed online monitoring device has a built-in LoRa module for near-field communication with the near-ground data relay device, as well as for exchanging information with the other two phase distributed online monitoring devices and monitoring the operating status of each phase distributed online monitoring device. The near-ground data relay device communicates with the distributed online monitoring device through the LoRa module and with the control master station through optical fiber via TCP / IP communication, internally implementing protocol conversion and data pass-through functions. In this case, the control master station acts as a TCP server, and the near-ground data relay device creates a socket connection for each distributed online monitoring device client, automatically assigning a unique corresponding network port and IP address. The online monitoring device client can be added and removed at any time.

[0029] In this embodiment, when the communication between a certain phase online monitoring device and the near-ground data relay device is abnormal, the online monitoring device of the phase with abnormal communication can establish a wireless communication connection with other phase online monitoring devices to achieve data jump transmission.

[0030] In this embodiment, the near-ground data relay device is responsible for establishing a socket connection between each distributed online monitoring device and the control master station, thereby enabling bidirectional real-time data communication between the online monitoring device and the control master station. When multiple online monitoring devices send messages to the near-ground data relay device concurrently, the near-ground data relay device integrates communication resources within a unit of time through an access scheduling mechanism and allocates the communication resources to each distributed online monitoring device client according to different time slices.

[0031] The present invention also provides a data transmission method for a distributed online monitoring device based on wireless aggregation, comprising the following steps:

[0032] Step 1: After each distributed online monitoring device is put into operation, it sends a request to join the near-ground data relay device with its own unique identifier through the LoRa module.

[0033] Step 2: After receiving the request to join from each online monitoring device, the near-ground data relay device assigns a unique network port and IP address to the online monitoring device.

[0034] Step 3: The online monitoring device and the near-ground data relay device communicate via LoRa near-field wireless communication and use a private protocol to encrypt and transmit the data sent by the online monitoring device to the control master station. The near-ground data relay device obtains the network port and IP assigned to it and sends the data to the control master station in TCP / IP protocol messages.

[0035] Step 4: The control master station and the near-ground data relay device conduct bidirectional data interaction via optical fiber. The control master station sends TCP / IP protocol messages to each online monitoring device, and the near-ground data relay device parses the messages and transmits the data to each online monitoring device.

[0036] Step 5: If the online monitoring device malfunctions for an extended period, the near-ground data relay device will deregister the connection port and IP address assigned to the online monitoring device.

[0037] One embodiment of the present invention provides a data transmission method, which includes the program execution logic of a distributed online monitoring device. Figure 2 Provide a logic block diagram, including the following steps:

[0038] Step 1: After the distributed online monitoring device program starts running, it obtains its own processor's unique hardware ID and sends encrypted private protocol messages with the unique hardware ID identification code to the near-ground data relay device at fixed intervals through the LoRa network to request to join the communication network.

[0039] Step 2: After receiving the reply message from the near-ground data relay device, determine that the message is a reply to this module by using the unique hardware ID identification code in the reply message, and parse the network port and IP information allocated by the near-ground data relay device in the message.

[0040] Step 3: During normal operation, the distributed online monitoring device collects the power frequency information and traveling wave information of the line, and sends messages to the near-ground data relay device via LoRa.

[0041] Step 4: During normal operation, the control master station receives control messages from the near-ground data relay device, including commands to modify settings, update programs, and record waveforms. The master station parses the messages and executes the corresponding operations.

[0042] Step 5: After a prolonged period of no communication with the near-ground data relay device, retry periodically sending request messages to join the communication network, and send the power frequency information and traveling wave information of the lines collected during the operation phase to other distributed online monitoring devices for jump transmission.

[0043] Furthermore, one embodiment of the data transmission method provided by the present invention includes the program execution logic of a near-ground relay device. Figure 3 The given logic block diagram includes the following steps:

[0044] Step 1: After the near-ground data relay device program starts running, upon receiving a request message with a unique hardware ID from the distributed online monitoring device, it creates a socket connection between the corresponding distributed online monitoring device and the control master station, and automatically assigns port numbers and IP addresses, etc.

[0045] Step 2: When the near-ground data relay device receives the message sent to the control master station by the distributed online monitoring device during normal operation, it transmits the data to the control master station through the allocated network connection.

[0046] Step 3: When the near-ground data relay device receives the message sent by the control master station to each distributed online monitoring device during normal operation, it parses the corresponding message and transmits the data to the distributed online monitoring device wirelessly via LoRa.

[0047] Step 4: When there is no communication with a certain distributed online monitoring device for an extended period of time, the near-ground data relay device automatically releases the socket connection allocated to that distributed online monitoring device.

[0048] This invention also provides another computer device, including a processor and a memory configured to store a computer program capable of running on the processor; wherein, when the processor is configured to run the computer program, it performs the method steps described in the foregoing embodiments.

[0049] In practical applications, the aforementioned processor includes a Field-Programmable Gate Array (FPGA), and the processor can be a Central Processing Unit (CPU) or a Digital Signal Processor (DSP). It is understood that for different devices, the electronic devices used to implement the functions of the aforementioned processor can also be other types, and this embodiment of the invention does not impose specific limitations.

[0050] The aforementioned memory can be volatile memory, such as random-access memory (RAM); or non-volatile memory, such as read-only memory (ROM), flash memory, hard disk drive (HDD), or solid-state drive (SSD); or a combination of the above types of memory, and provides instructions and data to the processor.

[0051] In an exemplary embodiment, the present invention also provides a computer-readable storage medium for storing a computer program.

[0052] Optionally, the computer-readable storage medium can be applied to any of the methods in the embodiments of the present invention, and the computer program causes the computer to execute the corresponding processes implemented by the processor in the various methods of the embodiments of the present invention. For the sake of brevity, these will not be described in detail here.

[0053] In the several embodiments provided by this invention, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units or components can be combined, or integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be electrical, mechanical, or other forms.

[0054] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. The solutions in the embodiments of the present invention can be implemented using various computer languages, such as the object-oriented programming language Java and the interpreted scripting language JavaScript.

[0055] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0056] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0057] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0058] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the invention.

[0059] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A data transmission system for a distributed online monitoring device based on wireless aggregation, characterized in that: The system includes a near-ground data relay device, a control master station, and distributed online monitoring devices installed on three-phase overhead lines. Each distributed online monitoring device is installed on a specific phase of the high-voltage overhead line to monitor the operating status of the corresponding phase of the power line in real time and record event data. The near-ground data relay device is located on the ground surface below the overhead line and is used to establish socket connections between each distributed online monitoring device and the control master station. The control master station is used to monitor the operating status of each distributed online monitoring device, analyze the recorded data, remotely update the programs of each distributed online monitoring device, and issue control commands.

2. The system as described in claim 1, characterized in that: The distributed online monitoring device has a built-in LoRa module. The near-ground data relay device communicates with the distributed online monitoring device through the LoRa module and communicates with the control master station via TCP / IP through optical fiber.

3. The data transmission method of the distributed online monitoring device data transmission system based on wireless aggregation as described in claim 1, characterized in that: Includes the following steps, Step 1: The distributed online monitoring device sends a request to join with its own unique identifier to the near-ground data relay device; Step 2: The near-ground data relay device assigns a unique network port and IP address to the online monitoring device; Step 3: The distributed online monitoring device and the near-ground data relay device communicate via LoRa near-field wireless communication and use a private protocol to encrypt and transmit the data sent by the online monitoring device to the control master station. The near-ground data relay device obtains the network port and IP assigned to it and sends the data to the control master station in TCP / IP protocol messages. Step 4: The control master station sends TCP / IP protocol messages, which are parsed by the near-ground data relay device and then transmitted to the corresponding distributed online monitoring device.

4. The data transmission method as described in claim 3, characterized in that: In step 1, the distributed online monitoring device obtains its own processor's unique hardware ID and sends encrypted private protocol messages with the unique hardware ID identification code to the near-ground data relay device at fixed intervals via the LoRa network to request to join the communication network.

5. The data transmission method as described in claim 3, characterized in that: In step 2, the near-ground data relay device assigns a unique network port and IP address to the online monitoring device and replies with a message; after receiving the reply message from the near-ground data relay device, the distributed online monitoring device determines that the message is a reply to its own device through the unique hardware ID identification code in the reply message, and parses the network port and IP address assigned by the near-ground data relay device in the message.

6. The data transmission method as described in claim 3, characterized in that: After a prolonged period of no communication between the distributed online monitoring device and the near-ground data relay device, the device will periodically attempt to send a request to join the communication network and will then transmit the data collected during the operation phase via distributed online monitoring devices on other phase lines.

7. The data transmission method as described in claim 3, characterized in that: In step 3, when multiple distributed online monitoring devices send messages to the near-ground data relay device concurrently, the near-ground data relay device integrates communication resources within a unit of time through an access scheduling mechanism and allocates the communication resources to each distributed online monitoring device according to different time slices.

8. The data transmission method as described in claim 3, characterized in that: In step 3, when there is no communication with a certain distributed online monitoring device for a long time, the near-ground data relay device automatically releases the socket connection allocated to the distributed online monitoring device.

9. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor; characterized in that: When the processor executes the computer program, it implements the steps of the data transmission method of the distributed online monitoring device data transmission system based on wireless aggregation as described in any one of claims 3 to 8.

10. A computer-readable storage medium storing a computer program; characterized in that: When the computer program is executed by the processor, it implements the steps of the data transmission method of the distributed online monitoring device data transmission system based on wireless aggregation as described in any one of claims 3 to 8.

Images