Relay protection device inspection system and method

Abstract

The invention discloses a relay protection device inspection system and method. The system comprises the following steps: a relay protection device sends operation state information of the relay protection device to a D2D relay protection inspection instrument or a relay protection maintenance communication relay device; the relay protection maintenance communication relay device is in communication connection with each relay protection device through optical fiber communication and receives the operation state information of each relay protection device; the D2D relay protection inspection instrument is in communication connection with the relay protection device through D2D communication and receives the operation state information of the relay protection device; the relay protection device is also in communication connection with a relay protection maintenance communication relay device through D2D communication or optical fiber communication, and operation state information of the relay protection device is obtained through the relay protection maintenance communication relay device. The system solves the problems of manual reading errors, poor data real-time performance, low operation and maintenance efficiency and high field operation personal safety and misoperation risk, and has the advantages of safe and reliable data acquisition, good large-scale application capability and the like.

Description

Technical Field

[0001] This invention relates to a relay protection device inspection system and method, belonging to the fields of power system protection automation and communication technology. Background Technology

[0002] Device-to-Device (D2D) communication is a direct-connect wireless communication technology. As a key enabling technology for low-latency, high-reliability scenarios in 5G networks, D2D communication is an important supplement to cellular communication. In 6G technology, D2D communication will evolve into a core infrastructure for building distributed intelligent networks, supporting terminals as potential network nodes and relays, achieving the integration of "connectivity-sensing-computing-intelligence". D2D communication features direct and fast connections, spectrum reuse, energy saving, and compatibility and reliability, and has already been maturely applied in scenarios such as public safety, vehicle-to-everything (V2X) communication, and traffic offloading in densely populated areas.

[0003] As power systems continue to expand in scale and become increasingly complex, higher demands are being placed on the functionality, performance, and reliability of relay protection equipment. The inspection of relay protection devices is essentially a periodic verification and safeguard for the last line of defense in the power system, and the operational information collected plays an irreplaceable role in improving grid security. Currently, the inspection method for relay protection devices still relies primarily on manual inspection of individual devices. This method suffers from poor data real-time performance, high labor costs, low efficiency, and also introduces risks to personal safety and operational errors. The traditional manual single-device inspection model is no longer adequate for the demands of modern large-scale, complex, and highly reliable smart grids. To address this issue, an intelligent upgrade of relay protection inspection is urgently needed.

[0004] Currently, the development directions of intelligent inspection mainly include establishing a unified "intelligent operation and maintenance platform for relay protection" or adopting emerging technologies such as robots for inspection. However, the use of digital platforms for remote centralized management overlaps with the functions of existing integrated automation systems, making it difficult to define clear boundaries and significantly increasing hardware and software costs. Robotic inspection is primarily applied to primary equipment; access difficulties exist for secondary equipment and DC systems installed in independent rooms or areas with rodent-proof barriers. Furthermore, challenges remain in areas such as identification accuracy, navigation and battery life, as well as initial investment costs, limiting the large-scale application of robotic inspection. In conclusion, neither digital platform-based intelligent inspection nor robotic inspection can replace manual inspection in the short term.

[0005] Therefore, there is an urgent need for a method that can meet the requirements of intelligent inspection of relay protection devices, so as to reliably, efficiently and safely collect the operating data of relay protection devices. Summary of the Invention

[0006] The purpose of this invention is to provide a relay protection device inspection system and method. By adding a D2D communication module and a backup relay device to the traditional relay protection device, the operating status of the relay protection device can be checked. This effectively solves the problems of easy error reading, poor data real-time performance, low manpower efficiency, and high personal safety and misoperation risks in the existing technology during manual inspection. At the same time, it has the characteristics of high-efficiency and fast transmission, easy data security and management, and high network robustness.

[0007] To achieve the above objectives, the present invention is implemented using the following technical solution.

[0008] In a first aspect, the present invention provides a relay protection device inspection system, comprising: a relay protection device, a D2D relay protection inspection instrument, and a relay protection maintenance communication relay device; The relay protection device is used to send the operating status information of the relay protection device to the D2D relay protection inspection instrument or the relay protection maintenance communication relay device. The relay protection maintenance communication relay device is connected to each relay protection device via optical fiber communication and is used to receive the operating status information of each relay protection device. The D2D relay protection inspection instrument is connected to the relay protection device via D2D communication and is used to receive the operating status information of the relay protection device. The D2D relay protection inspection instrument is also connected to the relay protection maintenance communication relay device via D2D communication or fiber optic communication, and is used to obtain the operating status information of the relay protection device through the relay protection maintenance communication relay device.

[0009] Furthermore, the relay protection device includes a D2D communication module and an optical fiber communication module. The D2D communication module is used to establish a D2D communication connection with the D2D relay protection inspection instrument. The fiber optic communication module is used to establish a communication connection with the relay device for relay protection maintenance.

[0010] Furthermore, the D2D relay protection inspection device also includes an optical fiber communication module, a security authentication module, a central processing unit, a display screen, and a human-machine interaction module; The security authentication module supports the terminal identity verification process of authentication initiation, credential verification, and establishment of a secure session; The verification credentials include any one of the following: password authentication, digital certificate, and dynamic token.

[0011] Furthermore, the relay protection maintenance communication relay device also includes a second D2D communication module, which is connected to each relay protection device in a network via a second fiber optic communication module. At the same time, it is connected to the D2D relay protection inspection instrument via the second D2D communication module or the second fiber optic communication module.

[0012] In this invention, the relay protection maintenance communication relay device serves as a backup inspection scheme device, enabling the D2D relay protection inspection instrument to establish communication with each relay protection device through the relay device, thereby obtaining the operating status information of the relay protection device.

[0013] Furthermore, the operating status information includes protection status, pressure plate status, setpoint information, version information, and device setting information: The protection status includes analog quantity, digital quantity, GOOSE status, operating condition, channel information, alarm information, and protection function status. The pressure plate states include functional pressure plate and GOOSE sending soft pressure plate; The setting information includes protection settings and equipment parameter settings; The device settings include time synchronization method and communication parameters.

[0014] In a second aspect, the present invention provides a relay protection device inspection method, which is applied to any of the relay protection device inspection systems described in the first aspect. The inspection method includes main link inspection, backup link one inspection and backup link two inspection. The main link inspection involves the inspector holding a D2D relay protection inspection device and wirelessly connecting it to each relay protection device. After the D2D communication link is established, the inspector performs identity verification at the D2D relay protection inspection device. After successful identity verification, the D2D relay protection inspection device obtains the operating status information of the relay protection device, and the inspector completes the subsequent inspection work. When the D2D relay protection inspection instrument cannot directly establish D2D communication with the relay protection device, the inspection is carried out through the backup link. At this time, the inspection personnel hold the D2D relay protection inspection instrument and wirelessly connect it to the relay protection maintenance communication relay device to establish a D2D communication connection and perform identity verification. After the identity verification is successful, the D2D relay protection inspection instrument obtains the operating status information of each relay protection device through the relay protection maintenance communication relay device, and the inspection personnel complete the subsequent inspection work. When the D2D relay protection inspection instrument cannot directly establish D2D communication with the relay protection device or the relay protection maintenance communication relay device, the inspection personnel use the D2D relay protection inspection instrument to connect to the relay protection maintenance communication relay device through the fiber optic communication module and perform identity verification. After successful identity verification, the D2D relay protection inspection instrument obtains the operating status information of each relay protection device, and the inspection personnel complete the subsequent inspection work.

[0015] In the event of a D2D communication link interruption, the method of this invention provides two backup link transmission methods, which effectively realizes the switching of communication links, ensures the continuity and reliability of data transmission, improves transmission efficiency, and reduces the risk of misoperation.

[0016] Furthermore, the identity verification process involves verifying the identity of the inspection personnel through the security authentication module of the D2D relay protection inspection instrument. After successful identity verification, the operating status information of the relay protection device is obtained and displayed.

[0017] Furthermore, the D2D relay protection inspection instrument displays the operating status information of the relay protection device on a screen for inspection personnel to view.

[0018] Thirdly, the present invention provides a computer-readable storage medium having a computer program / instruction stored thereon, which, when executed by a processor, implements the steps of the relay protection device inspection method described in any of the second aspects.

[0019] Fourthly, the present invention provides a computer device, comprising: Memory, used to store computer programs / instructions; A processor for executing the computer program / instructions to implement the steps of the relay protection device inspection method described in any one of the second aspects.

[0020] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: 1. The relay protection device inspection system and method provided by this invention includes adding a D2D communication module to a traditional relay protection device, which can transmit information such as the device's operating status. Substation inspection personnel use a handheld relay protection inspection instrument equipped with a D2D communication module to wirelessly connect with the relay protection device via D2D communication and check its operating status. A backup relay device is also added, connected to each relay protection device via an optical fiber communication module, and connected to the relay protection inspection instrument via either a D2D communication module or an optical fiber communication module to transmit the operating status information of each relay protection device, serving as a backup inspection scheme. This invention achieves reliable, efficient, and secure acquisition of relay protection device operating data, effectively solving the problems of error-prone manual reading, poor data real-time performance, low maintenance efficiency, and high personal safety and operational risks associated with on-site operations in traditional manual inspection modes. Furthermore, the solution proposed in this invention has good scalability and can fully meet the advanced requirements of modern power systems for intelligent inspection of relay protection equipment.

[0021] 2. The computer-readable storage medium and computer equipment provided by the present invention can execute the steps of the relay protection device inspection method provided by the present invention. Attached Figure Description

[0022] Figure 1 This is a flowchart of the inspection method for a relay protection device provided according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the system structure of the relay protection device inspection method provided in an embodiment of the present invention. Detailed Implementation

[0023] It should be noted that: The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solution of the present invention, rather than limitations thereof. In the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other.

[0024] The term "and / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship. Example 1

[0025] like Figure 1 As shown in the figure, this embodiment introduces a relay protection device inspection system, including: a relay protection device, a D2D relay protection inspection instrument, and a relay protection maintenance communication relay device; The relay protection device is used to send the operating status information of the relay protection device to the D2D relay protection inspection instrument or the relay protection maintenance communication relay device. The relay protection maintenance communication relay device is connected to each relay protection device via optical fiber communication and is used to receive the operating status information of each relay protection device. The D2D relay protection inspection instrument is connected to the relay protection device via D2D communication and is used to receive the operating status information of the relay protection device. The D2D relay protection inspection instrument is also connected to the relay protection maintenance communication relay device via D2D communication or fiber optic communication, and is used to obtain the operating status information of the relay protection device through the relay protection maintenance communication relay device.

[0026] Furthermore, the relay protection device adds a D2D communication module and an optical fiber communication module to the traditional relay protection device. Inspection personnel can connect to the D2D relay protection inspection instrument through the D2D communication module to transmit data and obtain operating status information. They can also communicate with the relay protection maintenance communication relay device through the optical fiber communication module to transmit data and obtain operating status information.

[0027] Furthermore, the relay protection device includes a D2D communication module and an optical fiber communication module. The D2D communication module is used to establish a D2D communication connection with the D2D relay protection inspection instrument. The fiber optic communication module is used to establish a communication connection with the relay device for relay protection maintenance.

[0028] Furthermore, the D2D relay protection inspection device also includes an optical fiber communication module, a security authentication module, a central processing unit, a display screen, and a human-machine interaction module; The security authentication module supports the terminal identity verification process of initiating authentication, verifying credentials, and establishing a secure session.

[0029] In this embodiment, the identity verification of the inspection personnel is completed through the security authentication module. Only after the identity verification is passed can the operating status information of the relay protection device be obtained and displayed on the D2D relay protection inspection instrument. The verification credentials include any one of the following: password authentication, digital certificate, and dynamic token.

[0030] Furthermore, the device also includes a second D2D communication module, which is connected to each relay protection device via a second fiber optic communication module. Simultaneously, it is connected to the D2D relay protection inspection instrument via the second D2D communication module or the second fiber optic communication module.

[0031] Furthermore, the operating status information includes protection status, pressure plate status, setpoint information, version information, and device setting information: The protection status includes analog quantity, digital quantity, GOOSE status, operating condition, channel information, alarm information, and protection function status. The pressure plate states include functional pressure plate and GOOSE sending soft pressure plate; The setting information includes protection settings and equipment parameter settings; The device settings include time synchronization method and communication parameters. Example 2

[0032] Based on the relay protection device inspection system described in Embodiment 1, this embodiment introduces a relay protection device inspection method, which includes main link inspection, backup link one inspection, and backup link two inspection. like Figure 2As shown, in this embodiment, the inspection personnel preferably conduct inspections via the main link. The inspection personnel use a handheld D2D relay protection inspection device to wirelessly connect directly to each relay protection device. After the D2D communication link is established, the security authentication module of the D2D relay protection inspection device automatically initiates the identity verification process. The D2D relay protection inspection device uses a data certificate as the verification credential to verify with the relay protection device. After the identity verification is successful, the two parties establish a secure session. The D2D relay protection inspection device obtains the operating status information sent by the relay protection device through the relay protection maintenance communication relay device. The operating status information includes protection status, pressure plate status, setting information, version information, and device setting information. After the D2D relay protection inspection device parses and clearly displays this information, the inspection personnel complete the subsequent inspection work. When inspection personnel attempt to perform a main link inspection and find that the D2D communication link quality is poor and cannot directly establish D2D communication with the relay protection device, they switch to backup link one for inspection. The backup link one inspection involves each relay protection device simultaneously connecting to the relay protection maintenance communication relay device via an optical fiber communication module. Specifically, the inspection personnel hold a handheld D2D relay protection inspection instrument and wirelessly connect directly to the relay protection maintenance communication relay device via the optical fiber communication module to establish a communication connection and perform identity verification. Similar to the main link inspection, identity verification uses a data certificate as the verification credential. After successful identity verification, the D2D relay protection inspection instrument obtains the operating status information of each relay protection device through the relay protection maintenance communication relay device. After the D2D relay protection inspection instrument parses and clearly displays this information, the inspection personnel complete the subsequent inspection work. When inspection personnel attempt to inspect the main link and backup link one, if the D2D relay protection inspection instrument cannot directly establish D2D communication with the relay protection device and the relay protection maintenance communication relay device, they switch to backup link two for inspection. Backup link two inspection involves each relay protection device simultaneously connecting to the relay protection maintenance communication relay device via an optical fiber communication module. The inspection personnel hold the D2D relay protection inspection instrument and connect to the relay protection maintenance communication relay device via the optical fiber communication module, performing authentication. Similar to the main link inspection, authentication uses a data certificate as the verification credential. After successful authentication, the D2D relay protection inspection instrument obtains the operating status information of each relay protection device through the relay protection maintenance communication relay device. After the D2D relay protection inspection instrument parses and clearly displays this information, the inspection personnel complete the subsequent inspection work. Example 3

[0033] Based on the relay protection device inspection method described in Embodiment 2, this embodiment introduces a computer-readable storage medium storing a computer program / instruction. When the computer program / instruction is executed by a processor, it implements the steps of the relay protection device inspection method as described in any of Embodiment 2. Example 4

[0034] Based on the relay protection device inspection method described in Embodiment 2, this embodiment provides a computer device, including: Memory, used to store computer programs / instructions; A processor is used to execute the computer program / instructions to implement the steps of the relay protection device inspection method as described in any one of Embodiment 2.

[0035] 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 embodied 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A relay protection device inspection system, characterized in that, include: Relay protection devices, D2D relay protection inspection instruments, and relay protection maintenance communication relay devices; The relay protection device is used to send the operating status information of the relay protection device to the D2D relay protection inspection instrument or the relay protection maintenance communication relay device. The relay protection maintenance communication relay device is connected to each relay protection device via optical fiber communication and is used to receive the operating status information of each relay protection device. The D2D relay protection inspection instrument is connected to the relay protection device via D2D communication and is used to receive the operating status information of the relay protection device. The D2D relay protection inspection instrument is also connected to the relay protection maintenance communication relay device via D2D communication or fiber optic communication, and is used to obtain the operating status information of the relay protection device through the relay protection maintenance communication relay device.

2. The relay protection device inspection system according to claim 1, characterized in that, The relay protection device includes a D2D communication module and an optical fiber communication module. The D2D communication module is used to establish a D2D communication connection with the D2D relay protection inspection instrument. The fiber optic communication module is used to establish a communication connection with the relay device for relay protection maintenance.

3. The relay protection device inspection system according to claim 1, characterized in that, The D2D relay protection inspection device also includes an optical fiber communication module, a security authentication module, a central processing unit, a display screen, and a human-machine interaction module; The security authentication module supports the terminal identity verification process of authentication initiation, credential verification, and establishment of a secure session; The verification credentials include any one of the following: password authentication, digital certificate, and dynamic token.

4. The relay protection device inspection system according to claim 1, characterized in that, The relay protection maintenance communication relay device also includes a D2D communication module two, which is connected to each relay protection device in a network through an optical fiber communication module two. At the same time, it is connected to the D2D relay protection inspection instrument through the D2D communication module two or the optical fiber communication module two.

5. The relay protection device inspection system according to claim 1, characterized in that, The operating status information includes protection status, pressure plate status, setpoint information, version information, and device setting information: The protection status includes analog quantity, digital quantity, GOOSE status, operating condition, channel information, alarm information, and protection function status. The pressure plate states include functional pressure plate and GOOSE sending soft pressure plate; The setting information includes protection settings and equipment parameter settings; The device settings include time synchronization method and communication parameters.

6. A method for inspecting relay protection devices, characterized in that, The inspection system for relay protection devices according to any one of claims 1 to 5 includes a main link inspection, a backup link one inspection, and a backup link two inspection. The main link inspection involves the inspector holding a D2D relay protection inspection device and wirelessly connecting it to each relay protection device. After the D2D communication link is established, the inspector performs identity verification at the D2D relay protection inspection device. After successful identity verification, the D2D relay protection inspection device obtains the operating status information of the relay protection device, and the inspector completes the subsequent inspection work. When the D2D relay protection inspection instrument cannot directly establish D2D communication with the relay protection device, the inspection is carried out through the backup link. At this time, the inspection personnel hold the D2D relay protection inspection instrument and wirelessly connect it to the relay protection maintenance communication relay device to establish a D2D communication connection and perform identity verification. After the identity verification is successful, the D2D relay protection inspection instrument obtains the operating status information of each relay protection device through the relay protection maintenance communication relay device, and the inspection personnel complete the subsequent inspection work. When the D2D relay protection inspection instrument cannot directly establish D2D communication with the relay protection device or the relay protection maintenance communication relay device, the inspection personnel use the D2D relay protection inspection instrument to connect to the relay protection maintenance communication relay device through the fiber optic communication module and perform identity verification. After successful identity verification, the D2D relay protection inspection instrument obtains the operating status information of each relay protection device, and the inspection personnel complete the subsequent inspection work.

7. The relay protection device inspection method according to claim 6, characterized in that, The identity verification process involves verifying the identity of the inspection personnel through the security authentication module of the D2D relay protection inspection instrument. After successful identity verification, the operating status information of the relay protection device is obtained and displayed.

8. The relay protection device inspection method according to claim 6, characterized in that, The D2D relay protection inspection instrument displays the operating status information of the relay protection device on a screen for inspection personnel to view.

9. A computer-readable storage medium having a computer program / instructions stored thereon, characterized in that, When the computer program / instruction is executed by the processor, it implements the steps of the relay protection device inspection method according to any one of claims 6 to 8.

10. A computer device / equipment / system, characterized in that, include: Memory, used to store computer programs / instructions; A processor is used to execute the computer program / instructions to implement the steps of the relay protection device inspection method according to any one of claims 6 to 8.

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