Device and method for checking consistency of terminal strip wiring diagram of transformer substation
By generating a topology diagram of terminal block wiring using a large visual model and fuzzy matching technology, the flexibility and accuracy issues of substation terminal block wiring verification are resolved, achieving high-precision map-to-real consistency verification and ensuring the stability of the power system.
Patent Information
- Application Number
- CN202510673586.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2025-04-29
- Filing Date
- 2025-05-23
- Publication Date
- 2025-10-28
AI Technical Summary
Existing technologies suffer from poor flexibility and high false positive and false negative rates in substation terminal block wiring verification. They are particularly difficult to adapt to new layouts during equipment upgrades or renovations, and traditional rule bases are difficult to maintain and cannot identify abnormal situations in complex scenarios.
By employing a large visual model and fuzzy matching technology, a topology diagram of the terminal block wiring image and drawing is generated and verified. The contextual reasoning capability of the large visual model is used to generate a topology diagram of the terminal block wiring image, and the fuzzy matching module is combined to verify critical and non-critical parts to ensure consistency.
It improves the flexibility and accuracy of terminal block wiring verification, reduces the false detection and missed detection rate, achieves high-precision drawing-to-actual consistency verification, and ensures the stable operation of the power system.
Smart Images
Figure CN120852271A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of power equipment wiring verification technology, specifically to a device and method for verifying the consistency of terminal block wiring diagrams in substations. Background Technology
[0002] In the substation engineering acceptance phase, verifying the terminal block wiring of the electrical cabinets is a crucial task. Traditionally, acceptance personnel must meticulously compare the provided drawings with the actual terminal block wiring on site to verify its accuracy. Because terminal blocks are relatively densely packed and the wiring is complex, acceptance personnel need to maintain a high level of concentration during the verification process. Prolonged focus can easily lead to fatigue, increasing the probability of errors.
[0003] Currently, some computer vision technologies are attempting to use rule-based image recognition techniques to locate and identify terminal block wiring, and have achieved some success. However, due to the complexity of substation terminal block wiring, involving terminals and wires of different colors, shapes, and sizes, and potential issues such as aging, wear, and obstruction, rule-based substation terminal block wiring image recognition methods require defining explicit rules for each situation to achieve accurate verification of terminal block wiring. However, in real-world scenarios, substation terminal blocks typically have complex three-dimensional layouts, with wires potentially crossing or tangling, leading to an exponential increase in the number of rules and making rule base maintenance difficult. Furthermore, rule-based terminal block wiring verification methods rely on predefined rules and cannot adapt to newly emerging terminal block layouts or wiring methods. When substation equipment is upgraded or modified, rules need to be redefined and adjusted, resulting in poor flexibility in terminal block wiring verification. If abnormalities occur in the terminal block wiring (such as broken or incorrectly connected wires), rule-based methods may fail to identify these anomalies, leading to false positives and false negatives. The lack of adaptive recognition capabilities for various terminal blocks and wiring markings reduces the reliability of verification and limits the widespread application of computer vision verification technology in the power industry. Summary of the Invention
[0004] To address the problems existing in the prior art, this invention provides a device and method for verifying the consistency of terminal block wiring diagrams in substations. It utilizes the contextual reasoning capabilities of a large visual model to handle complex terminal block wiring scenarios in electrical cabinets in substations, thereby achieving high-precision verification of the consistency of terminal block wiring diagrams and improving verification accuracy and efficiency.
[0005] To achieve the above technical objectives, the present invention adopts the following technical solution: a terminal block wiring diagram consistency verification device for substations, comprising: an image database of terminal block wiring, a drawing database of terminal block wiring, a large visual model module, a drawing parsing module, a diagram-to-actual key data consistency verification module, and a fuzzy matching module;
[0006] The terminal block wiring image database is used to store the collected terminal block wiring images of substation electrical cabinets;
[0007] The terminal block wiring diagram database is used to store terminal block wiring diagrams for substation electrical cabinets;
[0008] The visual large model module identifies the terminals and wires on the terminal block wiring image, infers the connection relationship between the terminals and wires, and obtains the topology map of the terminal block wiring image;
[0009] The drawing parsing module parses the terminal block wiring drawing to obtain the topology diagram of the terminal block wiring drawing;
[0010] The consistency verification module for key data in the diagram is used to verify the consistency between key parts in the topology diagram of the terminal block wiring image and key parts in the topology diagram of the corresponding terminal block wiring drawing.
[0011] The fuzzy matching module performs fuzzy matching on the non-critical parts of the topology diagram of the terminal block wiring image that has passed the consistency verification in the drawing-actual key data consistency verification module and the non-critical parts of the topology diagram of the corresponding terminal block wiring drawing, and outputs the final consistency verification result.
[0012] Furthermore, the location information of the terminal block wiring image of each substation electrical cabinet is recorded, as is the location information of the terminal block wiring diagram of each substation electrical cabinet. The consistency between the terminal block wiring image and the terminal block wiring diagram with consistent location information is verified.
[0013] Furthermore, the specific process of obtaining the topology map of the terminal block wiring image is as follows: set the prompt word template of the visual large model module, input the terminal block wiring image and the prompt word template into the visual large model module, extract the features of the terminal block wiring image through the visual large model module, align them with the corresponding prompt words in the prompt word template, parse the terminal and wire information in the terminal block wiring image based on the alignment result, deduce the connection relationship between the terminals and wires, and generate the topology map of the terminal block wiring image.
[0014] Furthermore, the setting of the prompt word template includes: identifying terminals and wires in the terminal block wiring image, marking their connection relationships, and extracting the topology of the terminal block, including the number of each terminal and the connection line.
[0015] Furthermore, the specific process of obtaining the topology diagram of the terminal block wiring diagram is as follows: use vector analysis technology to determine the spatial information of terminals and wires in the terminal block wiring diagram, use OCR technology to extract the terminal numbers, wire colors and connection relationships in the terminal block wiring diagram, and construct the topology diagram of the terminal block wiring diagram based on the determined spatial information of terminals and wires and the corresponding terminal numbers, wire colors and connection relationships.
[0016] Furthermore, the consistency verification module for key data in the diagram and the actual data verifies the consistency between the key terminal positions and numbers, and the wire positions and colors in the topology diagram of the terminal block wiring image and the key terminal positions and numbers, and the wire positions and colors in the corresponding terminal block wiring drawing. If the overall confidence level of the consistency verification on the terminal block wiring image is lower than a predetermined value, the consistency verification is output as failing; otherwise, the consistency verification is output as passing.
[0017] Furthermore, the fuzzy matching module configures a match table for easily confused characters of terminal numbers in the terminal block wiring diagram. It then performs fuzzy matching on non-critical parts of the topology diagram of the terminal block wiring image and the topology diagram of the terminal block wiring drawing, based on the easily confused character match table. If the terminal numbers of the non-critical parts in the topology diagram of the terminal block wiring image and the terminal numbers of the non-critical parts in the topology diagram of the terminal block wiring drawing are matched using the easily confused character match table, and the non-critical parts in the topology diagram of the terminal block wiring image and the non-critical parts in the topology diagram of the terminal block wiring drawing are consistent, the final result of the consistency verification is output as "passed"; otherwise, the consistency verification is output as "failed".
[0018] Furthermore, for terminal block wiring images that fail the consistency check between the output drawing and the actual product, the locations where the discrepancies are not found are manually verified.
[0019] Furthermore, the present invention also provides a method for verifying the consistency of terminal block wiring diagrams in substations, using the aforementioned device for verifying the consistency of terminal block wiring diagrams in substations, comprising the following steps:
[0020] Step S1: Obtain the terminal block wiring image of the substation electrical cabinet from the terminal block wiring image database, and obtain the corresponding terminal block wiring drawing of the substation electrical cabinet from the terminal block wiring drawing database.
[0021] Step S2: Use the visual large model module to identify the terminals and wires on the terminal block wiring image, and infer the connection relationship between the terminals and wires to obtain the topology map of the terminal block wiring image;
[0022] Step S3: Use the drawing parsing module to parse the terminal block wiring drawing and obtain the topology diagram of the terminal block wiring drawing;
[0023] Step S4: Use the drawing-to-actual key data consistency verification module to verify the consistency between the key parts of the topology diagram of the terminal block wiring image and the key parts of the topology diagram of the terminal block wiring drawing at the corresponding positions. If the verification passes, proceed to step S4; otherwise, perform manual verification.
[0024] Step S5: Use the fuzzy matching module to perform fuzzy matching on the non-critical parts of the topology diagram of the terminal block wiring image that has passed the verification and the non-critical parts of the topology diagram of the corresponding terminal block wiring drawing, and output the final consistency verification result.
[0025] Compared with existing technologies, the present invention has the following beneficial effects: The terminal block wiring diagram consistency verification device and method of the present invention introduces a visual large model. By setting prompt word templates for the visual large model and utilizing the contextual reasoning capability of the visual large model, a topology map of the terminal block wiring image is generated, avoiding the use of rule-based image recognition technology. This can handle complex terminal block wiring scenarios in electrical cabinets in substations, greatly improving the flexibility and accuracy of terminal block wiring image recognition. At the same time, the present invention uses a diagram-to-actual key data consistency verification module to verify the key parts of the terminal block wiring diagram consistency, focusing on checking to ensure that the wiring of these parts meets the design requirements. A fuzzy matching module is used to verify the non-critical parts of the diagram-to-actual consistency, improving the fault tolerance of the non-critical parts verification, thereby improving the accuracy and comprehensiveness of the terminal block wiring diagram-to-actual consistency verification, and achieving high-precision terminal block wiring diagram-to-actual consistency verification. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the method for verifying the consistency of the terminal block wiring diagram in the substation according to the present invention. Detailed Implementation
[0027] The technical solution of the present invention will be further explained and described below with reference to the accompanying drawings.
[0028] This invention provides a device for verifying the consistency between terminal block wiring diagrams and actual wiring in a substation, comprising: an image database of terminal block wiring, a drawing database of terminal block wiring, a large visual model module, a drawing parsing module, a consistency verification module for key data of diagrams and actual wiring, and a fuzzy matching module.
[0029] The terminal block wiring image database is used to store the acquired terminal block wiring images of substation electrical cabinets and record the location information of each terminal block wiring image. In one embodiment of the invention, the terminal block wiring images of the substation electrical cabinets are acquired using an industrial camera mounted on a pan-tilt unit. This ensures sufficient stability of the industrial camera during movement, avoiding image blurring and distortion caused by shaking. A high-resolution wide-angle industrial camera is preferred, and it is configured with appropriate light sensing and autofocus functions to ensure clear acquisition of terminal block label information and wiring details under different lighting conditions.
[0030] The terminal block wiring diagram database is used to store the terminal block wiring diagrams of substation electrical cabinets and record the location information of each terminal block wiring diagram of a substation electrical cabinet. The diagrams and actual drawings with consistent location information are used to verify the consistency between the diagrams and the actual drawings.
[0031] The visual large model module identifies terminals and wires on terminal block wiring images, infers the connection relationships between terminals and wires, and obtains a topology map of the terminal block wiring image. Utilizing the contextual reasoning capability of the visual large model, an accurate topology map of the terminal block wiring image is obtained. Specifically, the visual large model used in this invention is the CLIP visual large model. A prompt word template is set for the visual large model module. The terminal block wiring image and the prompt word template are input into the visual large model module. The visual large model module extracts features from the terminal block wiring image and aligns them with the corresponding prompt words in the prompt word template. Based on the alignment result, the terminal and wire information in the terminal block wiring image is parsed, and the connection relationships between terminals and wires are inferred, generating a topology map of the terminal block wiring image. This avoids the use of rule-based image recognition technology and can handle complex terminal block wiring scenarios in electrical cabinets in substations, greatly improving the flexibility and accuracy of terminal block wiring image recognition.
[0032] In one embodiment of the present invention, the setting of the prompt word template includes: identifying terminals and wires in the terminal block wiring image and marking their connection relationship; extracting the topology of the terminal block, including the number of each terminal and the connection line.
[0033] The drawing parsing module parses the terminal block wiring drawings to obtain the topology diagram of the terminal block wiring drawings. Specifically, it uses vector analysis technology to determine the spatial information of terminals and wires in the terminal block wiring drawings, and uses OCR technology to extract the terminal numbers, wire colors and connection relationships in the terminal block wiring drawings. Based on the determined spatial information of terminals and wires, as well as the corresponding terminal numbers, wire colors and connection relationships, the topology diagram of the terminal block wiring drawings is constructed.
[0034] The diagram-to-actual key data consistency verification module is used to verify the consistency between key parts in the topology diagram of the terminal block wiring image and the key parts in the corresponding terminal block wiring diagram. Priority is given to verifying the key parts in the topology diagram of the terminal block wiring image to ensure that the wiring in these parts is consistent with the terminal block wiring diagram. Specifically, the module verifies the consistency of key terminal positions and numbers, and wire positions and colors in the topology diagram of the terminal block wiring image with the key terminal positions and numbers, wire positions and colors in the corresponding terminal block wiring diagram. If the overall diagram-to-actual consistency verification confidence level of the terminal block wiring image is lower than a predetermined value, the module outputs "Diagram-to-actual consistency verification fails"; otherwise, it outputs "Diagram-to-actual consistency verification passes". In one embodiment of the invention, the predetermined value is set to 0.75.
[0035] The fuzzy matching module performs fuzzy matching on the non-critical parts of the topology diagram of the terminal block wiring image that has passed the consistency verification in the drawing-actual data verification module, and on the non-critical parts of the topology diagram of the corresponding terminal block wiring drawing. It outputs the final consistency verification result, tolerating slight deviations in the non-critical parts of the terminal block wiring image through fuzzy matching, thus improving verification efficiency. Specifically, the fuzzy matching module configures a match table for easily confused characters of the terminal numbers in the terminal block wiring, such as recording "2" and "Z" in the match table. It then performs fuzzy matching on the non-critical parts of the topology diagram of the terminal block wiring image that has passed the drawing-actual data consistency verification, and on the non-critical parts of the topology diagram of the terminal block wiring image that has passed the drawing-actual data consistency verification. If the terminal numbers of the non-critical parts in the topology diagram of the terminal block wiring image and the non-critical parts in the topology diagram of the terminal block wiring drawing are consistent after matching using the match table, the final result of the drawing-actual data consistency verification is "passed"; otherwise, the result is "failed". This invention reduces consistency verification deviations caused by individual character recognition errors by using a fuzzy matching module. Through the combined use of key component verification and fuzzy matching technology, it can quickly verify terminal block wiring images, improving the accuracy and comprehensiveness of the consistency verification of terminal block wiring diagrams, achieving high-precision consistency verification of terminal block wiring diagrams, and ensuring the stable operation of the power system.
[0036] In one embodiment of the present invention, the critical and non-critical parts in the terminal block wiring diagram are determined as follows: the signal transmission core terminal, power distribution hub terminal, communication interface terminal, safety circuit terminal, high voltage / high current terminal and lightning protection grounding terminal are regarded as critical parts in the terminal block wiring diagram; the indicator light terminal, fan and heater terminal, local control terminal, redundant signal terminal, low voltage terminal and non-safety related terminal are regarded as non-critical parts in the terminal block wiring diagram.
[0037] In one embodiment of the present invention, for terminal block wiring images that fail the consistency check of the output diagram, the positions where the diagram and the actual verification are inconsistent are manually verified.
[0038] like Figure 1 The present invention also provides a method for verifying the consistency of terminal block wiring diagrams in substations, using the aforementioned device for verifying the consistency of terminal block wiring diagrams in substations, comprising the following steps:
[0039] Step S1: Obtain the terminal block wiring image of the substation electrical cabinet from the terminal block wiring image database, and obtain the corresponding terminal block wiring drawing of the substation electrical cabinet from the terminal block wiring drawing database.
[0040] Step S2: Use the visual large model module to identify the terminals and wires on the terminal block wiring image, and infer the connection relationship between the terminals and wires to obtain the topology map of the terminal block wiring image;
[0041] Step S3: Use the drawing parsing module to parse the terminal block wiring drawing and obtain the topology diagram of the terminal block wiring drawing;
[0042] Step S4: Use the drawing-to-actual key data consistency verification module to verify the consistency between the key parts of the topology diagram of the terminal block wiring image and the key parts of the topology diagram of the terminal block wiring drawing at the corresponding positions. If the verification passes, proceed to step S4; otherwise, perform manual verification.
[0043] Step S5: Use the fuzzy matching module to perform fuzzy matching on the non-critical parts of the topology diagram of the terminal block wiring image that has passed the verification and the non-critical parts of the topology diagram of the corresponding terminal block wiring drawing, and output the final consistency verification result.
[0044] The terminal block wiring diagram consistency verification device of the present invention can effectively solve the problem of low accuracy of traditional computer vision recognition under complex conditions such as "large tilt of wire cap, twisting of wire mark, and partial obstruction", and realize high-precision verification of terminal block wiring images under complex working conditions.
[0045] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should be considered within the scope of protection of the present invention.
Claims
1. A device for verifying the consistency of terminal block wiring diagrams in a substation, characterized in that, include: The terminal block wiring image database, terminal block wiring drawing database, visual large model module, drawing parsing module, drawing-real key data consistency verification module, and fuzzy matching module; The terminal block wiring image database is used to store the collected terminal block wiring images of substation electrical cabinets; The terminal block wiring diagram database is used to store terminal block wiring diagrams for substation electrical cabinets; The visual large model module identifies the terminals and wires on the terminal block wiring image, infers the connection relationship between the terminals and wires, and obtains the topology map of the terminal block wiring image; The drawing parsing module parses the terminal block wiring drawing to obtain the topology diagram of the terminal block wiring drawing; The consistency verification module for key data in the diagram is used to verify the consistency between key parts in the topology diagram of the terminal block wiring image and key parts in the topology diagram of the corresponding terminal block wiring drawing. The fuzzy matching module performs fuzzy matching on the non-critical parts of the topology diagram of the terminal block wiring image that has passed the consistency verification in the drawing-actual key data consistency verification module and the non-critical parts of the topology diagram of the corresponding terminal block wiring drawing, and outputs the final consistency verification result.
2. The device for verifying the consistency of terminal block wiring diagrams in a substation according to claim 1, characterized in that, Record the location information of the terminal block wiring image of each substation electrical cabinet, and record the location information of the terminal block wiring diagram of each substation electrical cabinet. Use the terminal block wiring image and terminal block wiring diagram with consistent location information to verify the consistency between the drawing and the actual situation.
3. The device for verifying the consistency of terminal block wiring diagrams in a substation according to claim 2, characterized in that, The specific process for obtaining the topology map of the terminal block wiring image is as follows: Set the prompt word template of the visual large model module, input the terminal block wiring image and the prompt word template into the visual large model module, extract the features of the terminal block wiring image through the visual large model module, align them with the corresponding prompt words in the prompt word template, parse the terminal and wire information in the terminal block wiring image based on the alignment result, deduce the connection relationship between the terminals and wires, and generate the topology map of the terminal block wiring image.
4. The device for verifying the consistency of terminal block wiring diagrams in a substation according to claim 3, characterized in that, The setting of the prompt word template includes: identifying the terminals and wires in the terminal block wiring image and marking their connection relationships. Extract the topology of the terminal block, including the number of each terminal and its connection lines.
5. The device for verifying the consistency of terminal block wiring diagrams in a substation according to claim 3, characterized in that, The specific process of obtaining the topology diagram of the terminal block wiring diagram is as follows: use vector analysis technology to determine the spatial information of terminals and wires in the terminal block wiring diagram, use OCR technology to extract the terminal numbers, wire colors and connection relationships in the terminal block wiring diagram, and construct the topology diagram of the terminal block wiring diagram based on the determined spatial information of terminals and wires and the corresponding terminal numbers, wire colors and connection relationships.
6. The terminal block wiring diagram consistency verification device for a substation according to claim 5, characterized in that, The consistency verification module for key data in the diagram checks the key terminal positions and numbers, wire positions and colors in the topology diagram of the terminal block wiring image against the key terminal positions and numbers, wire positions and colors in the corresponding topology diagram of the terminal block wiring drawing. If the overall confidence level of the consistency verification on the terminal block wiring image is lower than a predetermined value, the consistency verification is output as failing; otherwise, the consistency verification is output as passing.
7. A device for verifying the consistency of terminal block wiring diagrams in a substation according to claim 6, characterized in that, The fuzzy matching module uses a matching table of easily confused characters for terminal numbers in terminal block wiring to perform fuzzy matching on non-critical parts of the topology diagram of the terminal block wiring image and the topology diagram of the terminal block wiring drawing, after the consistency check of the drawing and the actual situation has passed. If the terminal numbers of the non-critical parts in the topology diagram of the terminal block wiring image and the non-critical parts in the topology diagram of the terminal block wiring drawing are consistent after matching with the easily confused character matching table, the final result of the consistency check of the drawing and the actual situation is output as passed; otherwise, the consistency check of the drawing and the actual situation is output as failed.
8. The terminal block wiring diagram consistency verification device for a substation according to claim 7, characterized in that, For terminal block wiring images that fail the consistency check between the output drawing and the actual product, the locations where the discrepancies are not found will be manually verified.
9. A method for verifying the consistency of terminal block wiring diagrams in substations, characterized in that, The substation terminal block wiring diagram consistency verification device according to any one of claims 1-8 includes the following steps: Step S1: Obtain the terminal block wiring image of the substation electrical cabinet from the terminal block wiring image database, and obtain the corresponding terminal block wiring drawing of the substation electrical cabinet from the terminal block wiring drawing database. Step S2: Use the visual large model module to identify the terminals and wires on the terminal block wiring image, and infer the connection relationship between the terminals and wires to obtain the topology map of the terminal block wiring image; Step S3: Use the drawing parsing module to parse the terminal block wiring drawing and obtain the topology diagram of the terminal block wiring drawing; Step S4: Use the drawing-to-actual key data consistency verification module to verify the consistency between the key parts of the topology diagram of the terminal block wiring image and the key parts of the topology diagram of the terminal block wiring drawing at the corresponding positions. If the verification passes, proceed to step S4; otherwise, perform manual verification. Step S5: Use the fuzzy matching module to perform fuzzy matching on the non-critical parts of the topology diagram of the terminal block wiring image that has passed the verification and the non-critical parts of the topology diagram of the corresponding terminal block wiring drawing, and output the final consistency verification result.