Relay protection verification system and verification method thereof

Abstract

The invention relates to the technical field of power system protection and control, in particular to a relay protection verification system, which comprises an intelligent parameter extraction unit for identifying a relay protection setting value sheet based on an OCR (Optical Character Recognition) technology and automatically extracting and structurally storing key parameters of a relay protection device; the verification data generation and conversion unit is used for automatically generating a multi-state quantity verification data sequence covering various scenes on the basis of the key parameters in combination with a preset protection type and action logic model, and exporting verification data into a standard format file adaptive to different models of relay protection calibrators through a built-in format conversion engine; the WeChat applet function management unit integrates basic functions of user identity verification, authority control and operation log recording, and designs a lightweight human-computer interaction interface. According to the invention, the automation and intelligence level of relay protection verification is greatly improved, and the verification accuracy and efficiency are significantly improved.

Description

Technical Field

[0001] This invention relates to the field of power system protection and control technology, specifically to a relay protection verification system and its verification method. Background Technology

[0002] Relay protection is a core technology for ensuring the safe and stable operation of power systems. "Relay" refers to the use of the "switching characteristics" of relays to achieve automatic control, protection, and signal transmission of circuits or equipment. Relays receive status signals from the power system through input circuits, driving the output circuit to open and close, thereby automatically triggering protection actions and transmitting alarm signals in the event of a fault or anomaly. Relay protection verification, as a crucial step in verifying the reliability of protection devices, directly impacts the operational safety of the power system. In existing technologies, traditional relay protection verification relies on manual operation, resulting in low efficiency in setting value entry, incomplete coverage of verification scenarios, and poor data format compatibility between different models of verification instruments, thus making it difficult to guarantee verification accuracy and overall work efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a relay protection verification system and method that addresses the above-mentioned shortcomings. By combining OCR technology with a professional vocabulary database for intelligent parameter extraction, automatic generation of verification data under multiple operating conditions, and format adaptation for multiple types of verification instruments, the system significantly improves the automation and intelligence level of relay protection verification, and significantly enhances the accuracy and efficiency of verification.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] This invention provides a relay protection verification system, comprising a parameter intelligent extraction unit, a verification data generation and conversion unit, and a WeChat mini-program function management unit, wherein:

[0006] The intelligent parameter extraction unit identifies the relay protection setting sheet based on OCR technology, automatically extracts and structures the key parameters of the relay protection device;

[0007] The verification data generation and conversion unit: Based on the structured setpoint parameters output by the parameter intelligent extraction unit, combined with the preset protection type and action logic model, it automatically generates a multi-state quantity verification data sequence covering multiple scenarios, and exports the verification data into a standard format file adapted to different models of relay protection verification instruments through the built-in format conversion engine.

[0008] The WeChat Mini Program function management unit is used to integrate basic functions such as user authentication, access control, and operation log recording, while also designing a lightweight human-computer interaction interface.

[0009] Furthermore, the intelligent parameter extraction unit supports multiple input formats, including but not limited to image formats such as JPG, PNG, PDF, and TIFF, as well as DOCX (a document format containing text and images) and XLSX (a document format with table parameters).

[0010] Furthermore, the intelligent parameter extraction unit includes a document recognition and preprocessing module, an OCR intelligent recognition module, and a parameter parsing and structured storage module;

[0011] The document recognition and preprocessing module is used to receive and preprocess user-uploaded fixed value sheet images or PDF files, including image correction and noise reduction;

[0012] The OCR intelligent recognition module performs text recognition on the pre-processed fixed value image based on OCR technology, converting the image information into machine-readable text information;

[0013] The parameter parsing and structured storage module is used to accurately extract key parameters of fixed values ​​and action logic from the identified text and store them in a structured format according to a predetermined format.

[0014] Furthermore, the verification data generation and conversion unit includes a parameter parsing and scenario matching module, a multi-state quantity verification data generation module, and a format conversion and export module;

[0015] The parameter parsing and scenario matching module is used to read the structured data output by the parameter intelligent extraction unit and match it with the preset protection type and action logic model;

[0016] The multi-state quantity verification data generation module is used to automatically generate a multi-state quantity verification data sequence covering normal, boundary, and abnormal operating conditions according to the matched protection scenario.

[0017] The format conversion and export module is used to convert the verification data into the standard .pts format through the built-in conversion engine, adapting to the import requirements of different models of relay protection testers, and supporting one-click export.

[0018] Furthermore, the protection types include line protection, main transformer protection, and bus differential protection.

[0019] Furthermore, the multi-state quantity verification data generation module automatically generates a multi-state quantity verification data sequence covering normal, boundary, and abnormal operating conditions based on the matched protection scenario. The specific operation is as follows:

[0020] A1: Invoke the corresponding action criterion model based on the matched protection type;

[0021] A2: Based on the action criterion model and structured setpoint parameters, calculate the minimum action current, braking coefficient, return coefficient and key characteristic values ​​of action time limit, and determine the action characteristic boundary points for testing;

[0022] For differential protection scenarios, the action criterion model is as follows: when the following conditions are met... Actions at the moment;

[0023] In the formula, For differential current, I is the vector sum of the currents on both sides; I1 and I2 are the currents on both sides. For braking current, ; K is the minimum operating current setting, and K is the braking coefficient setting. The current on both sides refers to the current measured by the current transformers installed at both ends of the protected equipment (such as transformers and lines).

[0024] A3: Generate a multi-state quantity test sequence that includes normal operation zone, critical operation boundary, reverse fault disturbance and harmonic blocking test.

[0025] Furthermore, braking current The meaning of the values ​​is as follows:

[0026] When based on the circulating braking method That is, by calculating half the magnitude of the difference in current vectors on both sides, the magnitude of the unbalanced current during normal system operation or external fault is reflected, and this serves as the basis for braking, so that the protection can more reliably not operate during external faults.

[0027] When based on the maximum current braking method This means taking the maximum value of the current amplitude on both sides as the braking current, which can more directly utilize the relationship between the current magnitudes on both sides to achieve braking. It can be applied in some simplified models or specific scenarios (such as protection logic that focuses on the influence of current amplitude) to ensure stable braking effect during external faults.

[0028] Furthermore, the format conversion and export module uses a built-in conversion engine to convert the verification data into the standard .pts format, adapting to the import requirements of different models of relay protection testers, and supports one-click export. The specific operation is as follows:

[0029] B1: Receives the target relay protection tester model selected by the user and calls the built-in device model-format rule mapping library;

[0030] B2: Analyze the field structure of the multi-state quantity verification data sequence and extract the core parameters of current, voltage, and time;

[0031] B3: Complete field name mapping, unit conversion, and data precision adaptation according to the .pts format specification of the selected model calibrator;

[0032] B4: Generate a file header identifier that meets the requirements for importing the calibrator, and encapsulate the calibrated data body in a fixed byte length;

[0033] B5: Provides a one-click export interface, supports local file storage or direct transfer to the verifier via Bluetooth, and records format conversion logs.

[0034] Furthermore, the WeChat Mini Program function management unit includes a user identity and permission management module, a lightweight human-computer interaction module, an operation log recording and auditing module, and a data communication and interface module;

[0035] The user identity and permission management module is used to provide user registration, login, and identity verification functions, and to assign corresponding data operation permissions according to different roles;

[0036] The lightweight human-computer interaction module is used to provide a simple and clear graphical operation interface to guide users to complete the entire process of uploading the set value sheet, confirming the parameters, selecting the verification items, and exporting the file.

[0037] The operation log recording and auditing module is used to automatically record all users' key operation behaviors and form an audit log;

[0038] The data communication and interface module is responsible for secure and stable communication between the front-end and back-end data processing services of the mini-program.

[0039] The present invention also provides a relay protection verification method, which includes the following steps:

[0040] Parameter extraction: Based on OCR technology, the relay protection setting sheet is identified, and key parameters of the relay protection device are automatically extracted and stored in a structured manner.

[0041] Generate and convert verification data. Based on the extracted parameters and combined with the preset protection type and action logic model, automatically generate a multi-state quantity verification data sequence covering multiple scenarios, and export the verification data into a standard format file that is compatible with different models of relay protection verification instruments through the built-in format conversion engine.

[0042] Manage WeChat Mini Program functions, complete basic functions such as user authentication, permission control, and operation log recording, and generate a lightweight human-computer interaction interface.

[0043] Compared with the prior art, the beneficial effects of the present invention are:

[0044] 1. This invention significantly improves the automation and intelligence level of relay protection verification by combining OCR technology with a professional vocabulary database for intelligent parameter extraction, automatic generation of multi-condition verification data, and format adaptation for multiple types of verification instruments, thereby significantly improving the accuracy and efficiency of verification.

[0045] 2. This invention provides a convenient and secure operation entry point for on-site verification by relying on WeChat mini-programs for hierarchical permission management, lightweight interaction, and secure data transmission, ensuring operational traceability and data security, and optimizing the overall verification work experience and management efficiency. Attached Figure Description

[0046] Figure 1 This is a system diagram of a relay protection verification system according to the present invention.

[0047] Figure 2 This is a flowchart of intelligent parameter extraction in a relay protection verification system according to the present invention.

[0048] Figure 3 This is a flowchart of the verification data generation and conversion process in a relay protection verification system according to the present invention.

[0049] Explanation of icon numbers:

[0050] 100. Intelligent Parameter Extraction Unit; 101. Document Recognition and Preprocessing Module; 102. OCR Intelligent Recognition Module; 103. Parameter Parsing and Structured Storage Module; 200. Verification Data Generation and Conversion Unit; 201. Parameter Parsing and Scene Matching Module; 202. Multi-State Quantity Verification Data Generation Module; 203. Format Conversion and Export Module; 300. WeChat Mini Program Function Management Unit; 301. User Identity and Permission Management Module; 302. Lightweight Human-Computer Interaction Module; 303. Operation Log Recording and Auditing Module; 304. Data Communication and Interface Module. Detailed Implementation

[0051] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0052] Example 1:

[0053] like Figures 1-3 As shown, this embodiment provides a relay protection verification system, including a parameter intelligent extraction unit 100, a verification data generation and conversion unit 200, and a WeChat mini-program function management unit 300, wherein:

[0054] Intelligent parameter extraction unit 100: Based on OCR technology, it recognizes the relay protection setting sheet, automatically extracts and structures the key parameters of the relay protection device, and supports multiple input formats such as images and PDFs;

[0055] Verification data generation and conversion unit 200: Based on the structured setpoint parameters output by the parameter intelligent extraction unit 100, combined with the preset protection type and action logic model, it automatically generates a multi-state quantity verification data sequence covering multiple scenarios, and exports the verification data into a standard format file adapted to different models of relay protection verification instruments through the built-in format conversion engine.

[0056] WeChat Mini Program Function Management Unit 300: It is used to integrate basic functions such as user authentication, access control and operation log recording, while designing a lightweight human-computer interaction interface.

[0057] The parameter intelligent extraction unit 100 includes a document recognition and preprocessing module 101, an OCR intelligent recognition module 102, and a parameter parsing and structured storage module 103.

[0058] The document recognition and preprocessing module 101 is used to receive and preprocess the fixed value sheet image or PDF file uploaded by the user, including image correction and noise reduction; the OCR intelligent recognition module 102 performs text recognition on the preprocessed fixed value sheet image based on OCR technology, converting the image information into machine-readable text information; the parameter parsing and structured storage module 103 is used to accurately extract the key parameters of the fixed value and action logic from the recognized text, and store them in a structured format according to a predetermined format.

[0059] The verification data generation and conversion unit 200 includes a parameter parsing and scenario matching module 201, a multi-state quantity verification data generation module 202, and a format conversion and export module 203.

[0060] The parameter parsing and scenario matching module 201 is used to read the structured data output by the parameter intelligent extraction unit 100 and match it with the preset protection type and action logic model; the multi-state quantity verification data generation module 202 is used to automatically generate a multi-state quantity verification data sequence covering normal, boundary and abnormal operating conditions according to the matched protection scenario; the format conversion and export module 203 is used to convert the verification data into the standard .pts format through the built-in conversion engine to adapt to the import requirements of different models of relay protection verification instruments and support one-click export.

[0061] Protection types include line protection, main transformer protection, and bus differential protection.

[0062] The multi-state quantity verification data generation module 202 automatically generates a multi-state quantity verification data sequence covering normal, boundary, and abnormal operating conditions based on the matched protection scenario. The specific operation is as follows:

[0063] A1: Invoke the corresponding action criterion model based on the matched protection type;

[0064] A2: Based on the action criterion model and structured setpoint parameters, calculate the minimum action current, braking coefficient, return coefficient and key characteristic values ​​of action time limit, and determine the action characteristic boundary points for testing;

[0065] For differential protection scenarios, the action criterion model is as follows: when the following conditions are met... Actions at the moment;

[0066] In the formula, the differential current The braking current is the vector sum of the currents on both sides. , K is the minimum operating current setting, and K is the braking coefficient setting.

[0067] A3: Generate a multi-state quantity test sequence that includes normal operation zone, critical operation boundary, reverse fault disturbance and harmonic blocking test.

[0068] The format conversion and export module 203 uses a built-in conversion engine to convert the verification data into the standard .pts format, adapting to the import requirements of different models of relay protection testers. It also supports one-click export. The specific operation is as follows:

[0069] B1: Receives the target relay protection tester model selected by the user and calls the built-in device model-format rule mapping library;

[0070] B2: Analyze the field structure of the multi-state quantity verification data sequence and extract the core parameters of current, voltage, and time;

[0071] B3: Complete field name mapping, unit conversion, and data precision adaptation according to the .pts format specification of the selected model calibrator;

[0072] B4: Generate a file header identifier that meets the requirements for importing the calibrator, and encapsulate the calibrated data body in a fixed byte length;

[0073] B5: Provides a one-click export interface, supports local file storage or direct transfer to the verifier via Bluetooth, and records format conversion logs.

[0074] The WeChat Mini Program function management unit 300 includes a user identity and permission management module 301, a lightweight human-computer interaction module 302, an operation log recording and auditing module 303, and a data communication and interface module 304.

[0075] The user identity and permission management module 301 provides user registration, login, and identity verification functions, and assigns corresponding data operation permissions according to different roles; the lightweight human-computer interaction module 302 provides a simple and clear graphical operation interface to guide users to complete the entire process of uploading value sheets, confirming parameters, selecting verification items, and exporting files; the operation log recording and auditing module 303 automatically records key user operation behaviors to form audit logs; and the data communication and interface module 304 is responsible for secure and stable communication between the front-end and back-end data processing services of the mini-program.

[0076] In this embodiment, a relay protection verification system is implemented as follows: First, the document recognition and preprocessing module 101 receives and preprocesses user-uploaded fixed value sheet images or PDF files, including image correction and noise reduction. Image correction employs a perspective transformation algorithm, using Canny edge detection to identify the rectangular border of the fixed value sheet, extracting the coordinates of four vertices as feature points, calculating the affine transformation matrix, and correcting tilted (≤30°) and distorted images into orthographic projection views. For folded fixed value sheets, a contour fitting algorithm is used to repair broken edges, ensuring the integrity of the text area. Noise reduction: Salt-and-pepper noise is filtered using 3×3 median filtering, and Gaussian noise is filtered using 5×5 Gaussian filtering. The OCR intelligent recognition module 102 performs text recognition on the preprocessed fixed value sheet image based on OCR technology, converting image information into machine-readable text information. The OCR technology uses a CRNN (Convolutional Recurrent Neural Network) + CTC (Connection Temporal Classification) deep learning framework, where the convolutional layer (ResNet50) extracts the spatial features of the text image, the bidirectional LSTM layer captures character sequence dependencies, and CTC achieves unaligned text transcription. Professional correction mechanism: A built-in relay protection professional vocabulary database (containing over 2000 terms such as "differential current," "braking coefficient," and "instantaneous overcurrent protection") is used. The database is compared with the recognition results using an edit distance algorithm to automatically correct similarity errors (e.g., misidentifying "braking" as "power generation"). Simultaneously, contextual semantics are considered (e.g., "setting value" must be followed by a numerical value and unit) to filter invalid recognition results. The parameter parsing and structured storage module 103 accurately extracts key parameters of setting values ​​and action logic from the recognized text and stores them in a structured format according to a predetermined format. The parameter parsing and scenario matching module 201 reads the structured data output by the intelligent parameter extraction unit 100 and matches it with preset protection types and action logic models; protection types include line protection, main transformer protection, and bus differential protection. The multi-state quantity verification data generation module 202 is used to automatically generate a multi-state quantity verification data sequence covering normal, boundary, and abnormal operating conditions according to the matched protection scenario. The specific operations are as follows: A1: Call the corresponding action criterion model according to the matched protection type; A2: Based on the action criterion model and structured setting parameters, calculate the minimum operating current, braking coefficient, return coefficient, and key characteristic values ​​of the operating time limit, and determine the boundary points of the operating characteristics used for testing; where, for differential protection scenarios, its action criterion model is: when the following conditions are met... Time-based operation; where, differential current The braking current is the vector sum of the currents on both sides. , The minimum operating current setting is set to K, and the braking coefficient setting is set to A3; A3: Generates a multi-state quantity test sequence that includes the normal operating zone, critical operating boundary, reverse fault disturbance, and harmonic blocking test. Line overcurrent protection operation criterion: When... and Action during the moment; In the formula: For measuring current, t is the duration and is a variable for verification data. Set the overcurrent action value. This is a time limit value for the action. The format conversion and export module 203 is used to convert the verification data into the standard .pts format using the built-in conversion engine, adapting to the import requirements of different models of relay protection testers and supporting one-click export. The specific operation is as follows: B1: Receives the target relay protection tester model selected by the user and calls the built-in device model-format rule mapping library; B2: Parses the field structure of the multi-state quantity verification data sequence and extracts the core parameters of current, voltage, and time; B3: According to the .pts format specification of the selected tester model, completes field name mapping, unit conversion, and data precision adaptation; .pts format specification: The file header (256 bytes) contains the device model, number of data points, etc., and the data body (32 bytes per line) is formatted according to the timestamp (8 bytes). (4 bytes) (4 bytes), Voltage (4 bytes), Operating Condition Identifier (1 byte), Reserved (11 bytes) are arranged in the order of "B4: Generate a file header identifier that meets the requirements for importing into the calibrator, and encapsulate the calibrator data body in a fixed byte length; B5: Provide a one-click export interface, supporting local file storage or direct transmission to the calibrator via Bluetooth, while recording format conversion logs. The user identity and permission management module 301 is used to provide user registration, login, and authentication functions, and assign corresponding data operation permissions according to different roles; Permissions: Administrators have full permissions for user management and log viewing; Expert users can modify calibrator model parameters; Ordinary debuggers can only use Data is generated and exported using a preset model. The lightweight human-computer interaction module 302 provides a simple and clear graphical user interface, guiding users through the entire process of uploading setting sheets, confirming parameters, selecting verification items, and exporting files. The operation log recording and auditing module 303 automatically records key user operations to form an audit log; key operations include setting sheet upload time, parameter extraction, verification data generation, and file export. The data communication and interface module 304 is responsible for secure and stable communication between the mini-program's front-end and back-end data processing services. It uses the HTTPS protocol, with data transmission encrypted using TLS 1.3; the mini-program and back-end interfaces use a RESTful style, with request parameters and response results encrypted using AES, and the key is dynamically updated periodically.

[0077] Example 2:

[0078] like Figures 2-3 As shown in the figure, this embodiment provides a relay protection verification method, which includes the following steps:

[0079] S1, Parameter Extraction: Based on OCR technology, the relay protection setting sheet is identified, and key parameters of the relay protection device are automatically extracted and stored in a structured manner.

[0080] S2 generates and converts verification data. Based on the extracted parameters and combined with the preset protection type and action logic model, it automatically generates a multi-state quantity verification data sequence covering multiple scenarios and exports the verification data into a standard format file that is compatible with different models of relay protection verification instruments through the built-in format conversion engine.

[0081] S3 manages WeChat Mini Program functions, completes basic functions such as user authentication, permission control, and operation log recording, and generates a lightweight human-computer interaction interface.

[0082] Step S1 above is implemented by a parameter intelligent extraction unit, which includes:

[0083] The document recognition and preprocessing module is used to receive and preprocess user-uploaded value sheet images or PDF files, including image correction and noise reduction;

[0084] The OCR intelligent recognition module uses OCR technology to perform text recognition on pre-processed fixed value images, converting image information into machine-readable text information.

[0085] The parameter parsing and structured storage module is used to accurately extract key parameters of fixed values ​​and action logic from the recognized text and store them in a structured format according to a predetermined format.

[0086] Step S2 above is implemented through a verification data generation and conversion unit, which includes:

[0087] The parameter parsing and scenario matching module is used to read the structured data output by the parameter intelligent extraction unit and match it with the preset protection type and action logic model.

[0088] The multi-state quantity verification data generation module is used to automatically generate multi-state quantity verification data sequences covering normal, boundary, and abnormal operating conditions according to the matched protection scenario.

[0089] The format conversion and export module is used to convert verification data into the standard .pts format through the built-in conversion engine, adapting to the import requirements of different models of relay protection testers, and supporting one-click export.

[0090] Step S3 above is implemented through the WeChat Mini Program function management unit, which includes:

[0091] The user identity and permission management module is used to provide user registration, login, and identity verification functions, and to assign corresponding data operation permissions according to different roles;

[0092] The lightweight human-computer interaction module provides a simple and clear graphical interface to guide users through the entire process of uploading setting sheets, confirming parameters, selecting verification items, and exporting files.

[0093] The operation log recording and auditing module is used to automatically record all users' key operation behaviors and form an audit log.

[0094] The data communication and interface module is responsible for secure and stable communication between the front-end and back-end data processing services of the mini-program.

[0095] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0096] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A relay protection verification system, characterized in that, It includes a parameter intelligent extraction unit (100), a verification data generation and conversion unit (200), and a WeChat mini-program function management unit (300), wherein: The parameter intelligent extraction unit (100) identifies the relay protection setting sheet based on OCR technology, automatically extracts and structures the key parameters of the relay protection device; The verification data generation and conversion unit (200) automatically generates a multi-state quantity verification data sequence covering multiple scenarios based on the structured setpoint parameters output by the parameter intelligent extraction unit (100) and the preset protection type and action logic model. The verification data is exported as a standard format file adapted to different models of relay protection verification instruments through the built-in format conversion engine. The WeChat Mini Program Function Management Unit (300) is used to integrate basic functions such as user authentication, access control and operation log recording, while also designing a lightweight human-computer interaction interface.

2. The relay protection verification system according to claim 1, characterized in that, The parameter intelligent extraction unit (100) supports multiple input formats, including image formats such as JPG, PNG, PDF, TIFF, DOCX, and XLSX.

3. A relay protection verification system according to claim 1 or 2, characterized in that, The parameter intelligent extraction unit (100) includes a document recognition and preprocessing module (101), an OCR intelligent recognition module (102), and a parameter parsing and structured storage module (103).

4. The relay protection verification system according to claim 3, characterized in that, The document recognition and preprocessing module (101) is used to receive and preprocess the fixed value sheet image or PDF file uploaded by the user, including image correction and noise reduction; the OCR intelligent recognition module (102) performs text recognition on the preprocessed fixed value sheet image based on OCR technology, and converts the image information into machine-readable text information; the parameter parsing and structured storage module (103) is used to accurately extract the key parameters of the fixed value and action logic from the recognized text, and store them in a structured format according to a predetermined format.

5. A relay protection verification system according to claim 1 or 2, characterized in that, The verification data generation and conversion unit (200) includes a parameter parsing and scenario matching module (201), a multi-state quantity verification data generation module (202), and a format conversion and export module (203).

6. A relay protection verification system according to claim 5, characterized in that, The parameter parsing and scenario matching module (201) is used to read the structured data output by the parameter intelligent extraction unit (100) and match the preset protection type and action logic model; the multi-state quantity verification data generation module (202) is used to automatically generate a multi-state quantity verification data sequence covering normal, boundary and abnormal working conditions according to the matched protection scenario; the format conversion and export module (203) is used to convert the verification data into the standard .pts format through the built-in conversion engine to adapt to the import requirements of different models of relay protection verification instruments and support one-click export.

7. A relay protection verification system according to claim 6, characterized in that, The protection types include line protection, main transformer protection, and bus differential protection.

8. A relay protection verification system according to claim 6, characterized in that, The multi-state quantity verification data generation module (202) automatically generates a multi-state quantity verification data sequence covering normal, boundary, and abnormal operating conditions according to the matched protection scenario. The specific operation is as follows: A1: Invoke the corresponding action criterion model based on the matched protection type; A2: Based on the action criterion model and structured setpoint parameters, calculate the minimum action current, braking coefficient, return coefficient and key characteristic values ​​of action time limit, and determine the action characteristic boundary points for testing; For differential protection scenarios, the action criterion model is as follows: when the following conditions are met... Actions at the moment; In the formula, the differential current The braking current is the vector sum of the currents on both sides. , K is the minimum operating current setting, and K is the braking coefficient setting. A3: Generate a multi-state quantity test sequence that includes normal operation zone, critical operation boundary, reverse fault disturbance and harmonic blocking test.

9. A relay protection verification system according to claim 6, characterized in that, The format conversion and export module (203) uses a built-in conversion engine to convert the verification data into the standard .pts format, adapting to the import requirements of different models of relay protection testers, and supports one-click export. The specific operation is as follows: B1: Receives the target relay protection tester model selected by the user and calls the built-in device model-format rule mapping library; B2: Analyze the field structure of the multi-state quantity verification data sequence and extract the core parameters of current, voltage, and time; B3: Complete field name mapping, unit conversion, and data precision adaptation according to the .pts format specification of the selected model calibrator; B4: Generate a file header identifier that meets the requirements for importing the calibrator, and encapsulate the calibrated data body in a fixed byte length; B5: Provides a one-click export interface, supports local file storage or direct transfer to the verifier via Bluetooth, and records format conversion logs.

10. A relay protection verification system according to claim 1 or 2, characterized in that, The WeChat Mini Program function management unit (300) includes a user identity and permission management module (301), a lightweight human-computer interaction module (302), an operation log recording and auditing module (303), and a data communication and interface module (304).

11. A relay protection verification system according to claim 10, characterized in that, The user identity and permission management module (301) is used to provide user registration, login, and identity verification functions, and to assign corresponding data operation permissions according to different roles; the lightweight human-computer interaction module (302) is used to provide a simple and clear graphical operation interface to guide users to complete the entire process of uploading the set value sheet, confirming the parameter, selecting the verification item, and exporting the file; the operation log recording and auditing module (303) is used to automatically record the key operation behaviors of all users to form an audit log; the data communication and interface module (304) is used to be responsible for the secure and stable communication between the front-end and back-end data processing services of the mini-program.

12. A verification method for a relay protection verification system, characterized in that, The method includes the following steps: S1, Parameter Extraction: Based on OCR technology, the relay protection setting sheet is identified, and key parameters of the relay protection device are automatically extracted and stored in a structured manner. S2 generates and converts verification data. Based on the extracted parameters and combined with the preset protection type and action logic model, it automatically generates a multi-state quantity verification data sequence covering multiple scenarios and exports the verification data into a standard format file that is compatible with different models of relay protection verification instruments through the built-in format conversion engine. S3 manages WeChat Mini Program functions, completes basic functions such as user authentication, permission control, and operation log recording, and generates a lightweight human-computer interaction interface.

13. The verification method for the relay protection verification system according to claim 12, characterized in that, Step S1 is implemented by a parameter intelligent extraction unit, which includes: The document recognition and preprocessing module is used to receive and preprocess user-uploaded value sheet images or PDF files, including image correction and noise reduction; The OCR intelligent recognition module uses OCR technology to perform text recognition on pre-processed fixed value images, converting image information into machine-readable text information. The parameter parsing and structured storage module is used to accurately extract key parameters of fixed values ​​and action logic from the recognized text and store them in a structured format according to a predetermined format.

14. The verification method for the relay protection verification system according to claim 12, characterized in that, Step S2 is implemented through a verification data generation and conversion unit, which includes: The parameter parsing and scenario matching module is used to read the structured data output by the parameter intelligent extraction unit and match it with the preset protection type and action logic model. The multi-state quantity verification data generation module is used to automatically generate multi-state quantity verification data sequences covering normal, boundary, and abnormal operating conditions according to the matched protection scenario. The format conversion and export module is used to convert verification data into the standard .pts format through the built-in conversion engine, adapting to the import requirements of different models of relay protection testers, and supporting one-click export.

15. The verification method for the relay protection verification system according to claim 12, characterized in that, Step S3 is implemented through the WeChat Mini Program function management unit, which includes: The user identity and permission management module is used to provide user registration, login, and identity verification functions, and to assign corresponding data operation permissions according to different roles; The lightweight human-computer interaction module provides a simple and clear graphical interface to guide users through the entire process of uploading setting sheets, confirming parameters, selecting verification items, and exporting files. The operation log recording and auditing module is used to automatically record all users' key operation behaviors and form an audit log. The data communication and interface module is responsible for secure and stable communication between the front-end and back-end data processing services of the mini-program.

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