Auditing method and system for power transmission and transformation project design quality supervision and inspection

Abstract

The invention discloses an auditing method and system for power transmission and transformation project design quality supervision inspection, which are applied to the technical field of power transmission and transformation projects, and the method comprises the following steps: analyzing each obtained document to be audited, and determining a design drawing and a design text according to an analysis result; the design drawing is converted into a design drawing text, the design drawing and the design text are associated based on the design drawing text and the cosine distance of the design text, and a pre-examination document is obtained; respectively extracting design parameters of each associated item of the pre-examination document, carrying out conflict analysis on the design parameters, and constructing a local electrical topological structure based on consistent parameters in the design parameters; the conflict parameters are added to the local electrical topological structure for feasibility analysis, and an association item auditing result corresponding to each association item is generated based on an analysis result; and generating an audit result of the target power transmission and transformation project based on each association item audit result. According to the auditing method and system for power transmission and transformation project design quality supervision and inspection, the reliability of the auditing result is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of power transmission and transformation engineering technology, and in particular to a method and system for auditing and inspecting the design quality of power transmission and transformation projects. Background Technology

[0002] Power transmission and transformation projects are a core component of the power system, undertaking the crucial tasks of power transmission and distribution. Accurate and efficient review of the design quality of power transmission and transformation projects is not only a key safeguard to ensure the compliance and technical rationality of project construction, but also an important measure to protect national energy security and public interests.

[0003] Current technology uses machines for single-page scanning review, but the number of documents requiring pre-review in power transmission and transformation projects is large and the content is disorganized. Furthermore, inconsistencies exist in the expression, format, or data of the same content across different documents. For example, discrepancies in equipment models or topological relationships frequently occur between multiple source documents such as electrical main wiring diagrams, layout plans, and design specifications. Due to the large volume and frequent updates of these documents, single-page scanning review is not only inefficient but also cannot effectively identify semantic conflicts and logical inconsistencies across documents. This makes it difficult to effectively guarantee the overall consistency and technical compliance of the design deliverables, severely restricting the accuracy and reliability of early-stage quality control in engineering projects. Summary of the Invention

[0004] This invention provides a method and system for supervising and inspecting the design quality of power transmission and transformation projects, in order to solve the technical problem that existing auditing technologies cannot efficiently identify semantic conflicts and logical inconsistencies across documents, thereby improving the reliability of audit results.

[0005] To address the aforementioned technical problems, this invention provides a method and system for auditing the design quality of power transmission and transformation projects. The method includes: The documents to be reviewed for the target power transmission and transformation project are analyzed, and the design drawings and design texts in the documents to be reviewed are determined based on the analysis results. The design drawing is converted into design drawing text, and the design drawing and the design text are associated based on the cosine distance between them to obtain a pre-approval document; The design parameters of each associated item in the pre-approval document are extracted, conflict analysis is performed on the design parameters, and a local electrical topology is constructed based on the consistent parameters in the design parameters. The conflict parameters are added to the local electrical topology for feasibility analysis, and the review results of each associated item are generated based on the analysis results. Based on the review results of each of the aforementioned related items, an review result for the target power transmission and transformation project is generated, and at least one adjustment scheme is derived in reverse based on the review result, wherein the adjustment scheme is used to adjust the document to be reviewed for the target power transmission and transformation project.

[0006] Preferably, the step of analyzing the acquired documents for the target power transmission and transformation project to be reviewed, and determining the design drawings and design text in the documents to be reviewed based on the analysis results, includes: The document to be reviewed is type-identified, and the document to be reviewed is classified based on the identification results to obtain the image document to be extracted and the text document to be extracted; Extract feature information from the image document and the text document to be extracted, respectively; The feature information is analyzed to determine the design drawing and the design text.

[0007] Preferably, associating the design drawing and the design text based on the cosine distance between the design drawing text and the design text includes: Convert the design drawing text and the design text into a design drawing text vector and a design text vector, respectively. The similarity between the design graphic text vector and the design text vector is obtained based on the cosine distance technique. The degree of association between the design drawing text vector and the design text vector is determined by the similarity. The design drawings corresponding to the design drawing text vectors with a degree of association higher than a preset threshold and the design texts corresponding to the design text vectors are associated.

[0008] Preferably, the step of extracting design parameters for each associated item in the pre-approval document, performing conflict analysis on the design parameters, and constructing a local electrical topology based on consistent parameters in the design parameters includes: Electrical parameter information is extracted from the associated items to obtain an electrical parameter set; Based on the design drawings in the associated items, the electrical parameter set is categorized, conflict analysis is performed on the categorization results, and the electrical parameter set is filtered based on the analysis results to obtain the consistent parameters; The local electrical topology is constructed based on the consistent parameters.

[0009] Preferably, the step of generating an audit result for the target power transmission and transformation project based on the audit result of each of the related items, and deriving at least one adjustment scheme based on the audit result, includes: The audit results of each of the aforementioned related items are integrated and processed to obtain the audit results of the target power transmission and transformation project; Based on the feasibility analysis results of the conflict parameters in the audit results, the conflict parameters are processed to obtain the adjustment amount of the conflict parameters; The adjustment amount is analyzed in conjunction with the local electrical topology to generate the adjustment scheme.

[0010] Another aspect of the present invention provides an auditing system for quality supervision and inspection of power transmission and transformation engineering design, comprising: The analysis module is used to analyze the documents to be reviewed for the target power transmission and transformation project, and to determine the design drawings and design text in the documents to be reviewed based on the analysis results. The association module is used to convert the design drawing into design drawing text, and associate the design drawing and the design text based on the cosine distance between them to obtain a pre-approval document; The topology module is used to extract the design parameters of each associated item in the pre-approval document, perform conflict analysis on the design parameters, and construct a local electrical topology based on the consistent parameters in the design parameters. The conflict module is used to add conflict parameters to the local electrical topology for feasibility analysis and generate an approval result for each associated item based on the analysis results. The adjustment module is used to generate the audit result of the target power transmission and transformation project based on the audit result of each of the related items, and to derive at least one adjustment scheme based on the audit result, wherein the adjustment scheme is used to adjust the document to be audited for the target power transmission and transformation project.

[0011] Preferably, the analysis module includes: The identification unit is used to identify the type of the document to be reviewed, classify the document to be reviewed based on the identification result, and obtain the image document to be extracted and the text document to be extracted. Feature units are used to extract feature information from the image document to be extracted and the text document to be extracted, respectively. The determining unit is used to analyze the feature information and determine the design drawing and the design text.

[0012] Preferably, associating the design drawing and the design text based on the cosine distance between the design drawing text and the design text includes: A conversion unit is used to convert the design drawing text and the design text into a design drawing text vector and a design text vector, respectively. A similarity unit is used to obtain the similarity between the design graphic text vector and the design text vector based on the cosine distance technique. The association degree unit is used to determine the association degree between the design drawing text vector and the design text vector based on the similarity, and to associate the design drawing corresponding to the design drawing text vector and the design text corresponding to the design text vector whose association degree is higher than a preset threshold.

[0013] Preferably, the topology module includes: The extraction unit is used to extract electrical parameter information from the associated items to obtain an electrical parameter set; The classification unit is used to classify the electrical parameter set based on the design drawing in the associated item, perform conflict analysis on the classification results, and filter the electrical parameter set based on the analysis results to obtain the consistent parameters. A construction unit is used to construct the local electrical topology based on the consistent parameters.

[0014] Preferably, the step of generating an audit result for the target power transmission and transformation project based on the audit result of each of the related items, and deriving at least one adjustment scheme based on the audit result, includes: An integration unit is used to integrate the audit results of each of the aforementioned related items to obtain the audit results of the target power transmission and transformation project. The adjustment unit is used to process the conflict parameter based on the feasibility analysis results of the conflict parameter in the audit results, and obtain the adjustment amount of the conflict parameter; An analysis unit is used to analyze the adjustment amount and the local electrical topology to generate the adjustment scheme.

[0015] Compared with the prior art, the beneficial effects of the present invention are at least one of the following: This invention first analyzes the various documents to be reviewed for the target power transmission and transformation project to determine the design drawings and design text within these documents. Then, the design drawings are converted into design drawing text, and the design drawings and design text are associated based on the cosine distance between them to obtain a preliminary review document. Next, design parameters for each associated item in the preliminary review document are extracted, and conflict analysis is performed. A local electrical topology is constructed based on the consistent parameters in the design parameters. Further, conflict parameters are added to the local electrical topology for feasibility analysis, and review results are generated for each associated item based on the analysis results. Finally, based on the review results for each associated item, the review result for the target power transmission and transformation project is generated, and at least one adjustment scheme is derived from the review result to adjust the documents to be reviewed for the target power transmission and transformation project. Through these steps, this invention not only achieves automated and structured multi-source data comparison and consistency verification, but also efficiently identifies and resolves semantic conflicts and logical inconsistencies across documents, thereby significantly improving the accuracy and reliability of design quality review and ensuring high standards of quality control in the early stages of the project. Attached Figure Description

[0016] Figure 1 This is a flowchart illustrating the review method for quality supervision and inspection of power transmission and transformation engineering design in one embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of a review system for quality supervision and inspection of power transmission and transformation engineering design in one embodiment of the present invention; Figure label: Among them, 11. Analysis module; 12. Association module; 13. Topology module; 14. Conflict module; 15. Adjustment module. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive. 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.

[0018] In the description of this invention, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] In the description of this invention, it should be noted that, unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing specific embodiments only and is not intended to limit the invention. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] Quality review of power transmission and transformation engineering design is crucial for ensuring energy security and engineering compliance. However, existing machine review methods based on single-page scanning are unable to cope with the large number of documents from multiple sources, the variety of formats, and the inconsistency of content. They cannot efficiently identify semantic conflicts and logical contradictions across documents, which restricts the overall consistency of design results and the reliability of early quality control.

[0022] One embodiment of the present invention provides a method for reviewing and supervising the design quality of power transmission and transformation projects. For details, please refer to [link to relevant documentation]. Figure 1 , Figure 1 The diagram shows a flowchart of a review method for quality supervision and inspection of power transmission and transformation engineering design, as shown in one embodiment of the present invention, including: S1. Analyze each document to be reviewed for the target power transmission and transformation project, and determine the design drawings and design texts in the documents to be reviewed based on the analysis results. S2. Convert the design drawing into design drawing text, and associate the design drawing and design text based on the cosine distance between them to obtain the pre-approval document; S3. Extract the design parameters of each related item in the pre-approval document, perform conflict analysis on the design parameters, and construct a local electrical topology based on the consistent parameters in the design parameters; S4. Add conflict parameters to the local electrical topology for feasibility analysis, and generate review results for each related item based on the analysis results. S5. Based on the audit results of each related item, generate the audit results of the target power transmission and transformation project, and derive at least one adjustment plan based on the audit results. The adjustment plan is used to adjust the documents to be audited for the target power transmission and transformation project.

[0023] First, the documents to be reviewed for the target power transmission and transformation project are analyzed to determine the design drawings and design text within them. The documents are then categorized based on their type, resulting in document files to be extracted and document files to be extracted. Feature information is extracted from both document files and document files. This feature information is then analyzed to determine the design drawings and design text.

[0024] The documents pending review for a power transmission and transformation project refer to a collection of various documents containing design-related content generated in the early stages of the project's construction. Specifically, these include preliminary design documents, technical specifications for the construction design phase, and supporting engineering drawings. These documents are the core basis for the engineering design review, and their quality directly affects the safety, economy, and feasibility of the project. Analyzing these documents and identifying the design drawings and design texts within them is a fundamental prerequisite for the design review of power transmission and transformation projects. Because these documents are typically diverse in format and type, including scanned drawings, Word documents, and PDF files, the methods for information extraction and review differ significantly between document types. Only by clearly distinguishing between design drawings and design texts can subsequent information extraction and correlation analysis be conducted in a targeted manner, avoiding omissions or errors due to confusion in document types.

[0025] In practical implementation, document type identification is required first. A Support Vector Machine (SVM) can be used to construct a classification model by combining document format features and content features. Document format features include file extensions (e.g., .dwg is a special extension for design drawings, while .pdf and .docx may be design text formats), file header identifiers (e.g., header byte features of image files), and content features (e.g., whether the document contains a large amount of graphic vector data and the proportion of text paragraphs). By extracting these features from the document to be reviewed and inputting them into the SVM classification model, preliminary document type identification is achieved. Based on the identification results, the document is divided into documents for which images are to be extracted (preliminarily determined to contain design drawings) and documents for which text is to be extracted (preliminarily determined to contain design text). Subsequently, feature information from the two types of documents is extracted separately. For document documents containing images, a Convolutional Neural Network (CNN) is used to extract features from the graphic content, identifying line types, graphic elements, and graphic annotations, and converting the extracted graphic features into structured data. For document documents containing text, a bag-of-words model from Natural Language Processing (NLP) is used to extract text features, including keywords such as project names, equipment parameters, and design standards, as well as semantic and syntactic features. Finally, the extracted feature information from both types of documents is comprehensively analyzed. Combined with domain knowledge of power transmission and transformation engineering design documents, the preliminary classification results are verified and corrected to accurately identify the design drawings and design texts in the documents to be reviewed. This approach enables precise classification and effective screening of documents to be reviewed, improving the efficiency and accuracy of subsequent review work, ensuring the targeted and orderly nature of the review process, and laying a solid foundation for subsequent correlation analysis of design drawings and design texts, as well as the extraction and verification of design parameters.

[0026] Next, the design drawing is converted into design drawing text. The design drawing and design text are then linked based on the cosine distance between them to obtain a pre-approval document. The design drawing text and design text are then converted into design drawing text vectors and design text vectors. The similarity between the design drawing text vectors and design text vectors is obtained using cosine distance technology. The degree of association between the design drawing text vectors and design text vectors is determined based on this similarity. Design drawings and corresponding design texts with an association degree higher than a preset threshold are then linked.

[0027] Design drawings are engineering drawings in power transmission and transformation projects that contain graphic information such as the layout of electrical equipment and the route of power lines, such as substation main wiring diagrams and transmission line route diagrams. Design drawing text is a structured textual description of the graphic elements and annotations in the design drawings. Design text is written material in power transmission and transformation projects that describes the design scheme, technical parameters, and design basis, such as design specifications and technical specifications. Cosine distance is a measure of the angle between two vectors in space, used to reflect the similarity of the data represented by the vectors. The smaller the cosine distance, the smaller the angle between the vectors, and the higher the similarity. Design drawing text vectors and design text vectors are numerical vectors converted from corresponding text information, used for similarity calculations that can be processed by computers. Pre-review documents are a collection of documents awaiting further review after the design drawings and design text have been effectively associated. Converting design drawings into design drawing text and associating them based on the cosine distance is because the graphic information of the design drawings is difficult to directly compare and match with the text information of the design text. Only by converting the graphics into a unified text format can the association between the two be established through quantitative methods, ensuring the consistency of the correspondence between graphics and text information during the review. The specific implementation method requires first converting the design drawing into text. For vector format design drawings, computer-aided design (CAD) graphic analysis technology can be used to extract entity elements from the graphics. For example, the text description of a transformer symbol is "one 110kV main transformer", and the text description of a line symbol is "one 220kV transmission line". At the same time, the dimensions, equipment models and technical parameters in the graphics can be extracted and directly converted into text. For example, the label "1200A" corresponds to the text "rated current 1200A". For raster image format design drawings, optical character recognition (OCR) technology can be used to recognize text information in the image. Combined with convolutional neural networks (CNN) to recognize graphic elements and convert them into text descriptions. After converting the design image text to text, both the design image text and the design text are converted into vectors. Word embedding techniques, such as a bidirectional Transformer encoder, can be used. For both the design image text and the design text, preprocessing such as word segmentation and stop word removal is performed to obtain a valid vocabulary set. Then, the model maps each word to a fixed-dimensional word vector. Subsequently, average pooling or weighted averaging is used to integrate multiple word vectors into a single text vector, resulting in the design image text vector and the design text vector. Next, the similarity between the two is calculated using cosine distance. The cosine distance formula is the dot product of the two vectors divided by the product of their magnitudes. The calculated result ranges from -1 to 1, with a higher similarity indicating a closer value to 1.Next, a preset threshold is set. This threshold is determined through statistical analysis of historical correlation data from power transmission and transformation engineering design documents, typically ranging from 0.7 to 0.8. The degree of correlation is determined by whether the similarity exceeds the preset threshold. Design drawings and design texts that exceed the preset threshold are then associated to form a pre-review document. The advantage of this approach is that it achieves precise matching between design drawings and design texts, ensuring the completeness and correspondence of the review information. This lays the foundation for subsequent design parameter extraction and conflict analysis, and improves the logic and efficiency of the review process.

[0028] Preferably, design parameters for each associated item in the pre-approval document are extracted, conflict analysis is performed on the design parameters, and a local electrical topology is constructed based on the consistent parameters in the design parameters. Electrical parameter information is extracted from the associated items to obtain an electrical parameter set; the electrical parameter set is categorized based on the design diagrams in the associated items, conflict analysis is performed on the categorization results, and the electrical parameter set is filtered based on the analysis results to obtain consistent parameters; a local electrical topology is constructed based on the consistent parameters.

[0029] Related items are combinations of single-set design drawings and design texts with established correspondences in the pre-approval documents, such as design drawings and accompanying line design specifications for a transmission line in a certain area. Design parameters are core technical data characterizing equipment performance and line specifications in power transmission and transformation engineering design, including rated voltage, rated current, rated capacity, conductor type, cross-sectional length, tower height, and type. The electrical parameter set is a collection of all electrical design parameters extracted from related items. Consistent parameters are design parameters that are consistent and uncontradictory, determined after conflict analysis. The local electrical topology is a structural model built based on consistent parameters, reflecting the connection relationships and electrical logic of power transmission and transformation equipment in a specific area, such as the connection structure between the main transformer and busbar in a substation and the corresponding structure between a section of transmission line and tower. Extracting design parameters from each related item in the pre-approval document, conducting conflict analysis, and then building the local electrical topology based on consistent parameters are necessary because the design parameters corresponding to the design drawings and design texts in the related items may differ or even contradict each other. Direct use of these parameters would lead to distorted subsequent review conclusions. The local electrical topology requires accurate and unified parameter support to truly reflect the electrical logic of the engineering design. The specific implementation method requires first extracting electrical parameter information from the associated items. For electrical parameters in the design text, a bidirectional Transformer encoder representation model from Natural Language Processing (NLP) is used in conjunction with a domain dictionary for entity recognition. The domain dictionary contains commonly used parameter terms in power transmission and transformation engineering, such as rated voltage, rated current, and conductor type. The model locates parameter terms in the text and extracts corresponding values ​​to form a subset of text parameters. For electrical parameters in the design drawings, computer-aided design (CAD) graphic analysis technology combined with optical character recognition (OCR) technology is used to extract parameter information from graphic annotations, such as rated capacity on equipment nameplates and conductor cross-sections on line labels, to form a subset of graphic parameters. The text parameter subset and the graphic parameter subset are then merged to obtain the electrical parameter set. Next, the electrical parameter set is categorized based on the design drawings in the associated items, using equipment units and line segments in the design drawings as the classification criteria. For example, parameters such as rated capacity and rated voltage related to the main transformer are grouped into one category, and parameters such as conductor type, cross-section, and length related to a certain section of transmission line are grouped into another category. Subsequently, conflict analysis was performed on the classification results, using a combination of parameter numerical comparison and logical verification. The numerical comparison was conducted by setting reasonable tolerance ranges, such as ±5% for voltage parameters and ±3% for current parameters, to determine whether the values ​​of parameters from different sources within the same category were consistent. The logical verification was conducted by combining the electrical principles of power transmission and transformation engineering, such as power balance relationships and voltage level matching principles, to verify the logical rationality between parameters. If a parameter is contradictory in value or logic, it is determined to be a conflicting parameter. Parameters without conflicts are selected as consistent parameters.Finally, a local electrical topology is constructed based on consistent parameters. A graph modeling approach is used, treating power transmission and transformation equipment such as main transformers, busbars, circuit breakers, and towers as nodes, and connections between equipment such as conductor and cable connections as edges. Consistent parameters are used as attribute information for nodes and edges. Parameters are entered into a graph database such as Neo4j or a topology modeling tool such as AutoCAD Electrical to construct a visual local electrical topology. This approach ensures the accuracy and consistency of design parameters, providing a reliable data foundation for subsequent feasibility analysis. Furthermore, the local electrical topology visually presents the electrical connection logic, improving the intuitiveness and efficiency of subsequent review and analysis.

[0030] Feasibility analysis is performed by adding conflicting parameters to the local electrical topology. Based on the analysis results, a review result for each related item is generated. Conflicting parameters are technical data with numerical or logical contradictions identified after design parameter conflict analysis. For example, a main transformer's rated capacity might be 50MVA as indicated in the design drawings, while the corresponding parameter in the design document is 63MVA. Another example is a mismatch between the conductor cross-section parameters and the rated current parameters. Feasibility analysis is the process of determining whether the power transmission and transformation system can meet the technical specifications and functional requirements for safe operation after integrating conflicting parameters into the existing electrical topology. The review result for each related item is a conclusive document formed based on the feasibility analysis conclusions, including the parameter consistency, the degree of conflict impact, and whether the review is successful. Adding conflicting parameters to the local electrical topology for feasibility analysis and generating review results is necessary because simply identifying conflicting parameters is insufficient; their impact on the rationality and safety of the engineering design must also be clarified to accurately assess the design quality of related items.

[0031] First, conflicting parameters are categorized and associated with corresponding nodes or edges in the local electrical topology. For example, conflicting parameters related to the rated capacity of the main transformer are associated with the main transformer node in the topology, and conflicting parameters related to the conductor cross-section are associated with the corresponding line edge. The different sources and numerical differences of the conflicting parameters are also labeled. Next, a feasibility analysis is conducted, using a combination of simulation and standard verification. Simulation utilizes power system simulation software such as PSCAD (Power System Computer-Aided Design) to construct two or more topology simulation models with different values ​​of conflicting parameters, simulating system voltage, current, power loss, and stability under normal operation and fault conditions. Standard verification is based on relevant technical standards for power transmission and transformation engineering, such as GB 50217 Power Engineering Cable Design Standard and GB 50057 Building Lightning Protection Design Code, to verify whether the conflicting parameter values ​​meet the standard requirements. Simultaneously, the potential risks caused by parameter conflicts, such as overload, overheating, insulation damage, or system instability, are analyzed. Next, by combining the simulation results and standard verification conclusions, the acceptability of conflicting parameters is determined. If all conflicting parameter values ​​comply with the standards and their impact on system operation indicators is within the allowable range, it is considered a minor conflict and compatible. If any value does not comply with the standards or may lead to excessive system operation risks, it is considered a serious conflict and incompatible. Finally, based on the analysis results, a review result for related items is generated, clearly defining a list of consistent and conflicting parameters within the related items, explaining the degree of impact of conflicting parameters, and providing a conclusion of whether the review is satisfactory, unsatisfactory, or requires rectification and re-review. Suggested rectification directions are also indicated, such as prioritizing the use of design drawing parameters or recalculating parameter values. The advantage of this approach is that it accurately assesses the actual impact of conflicting parameters, ensures the scientific rigor and soundness of the related item review conclusions, and provides a reliable basis for subsequent overall project review results and adjustment plan formulation.

[0032] Finally, based on the audit results of each related item, the audit results of the target power transmission and transformation project are generated, and at least one adjustment scheme is derived from the audit results. This adjustment scheme is used to adjust the documents pending audit for the target power transmission and transformation project. The audit results of each related item are integrated to obtain the audit results of the target power transmission and transformation project. Based on the feasibility analysis results of the conflict parameters in the audit results, the conflict parameters are processed to obtain the adjustment amounts. The adjustment amounts are then analyzed in conjunction with the local electrical topology to generate the adjustment scheme.

[0033] The audit result of the target power transmission and transformation project is a comprehensive conclusion reflecting the overall design quality of the project, formed by integrating the audit results of all related items. It includes the overall project compliance status, the distribution of compliance of related items, a summary of conflicting parameters, and key risk points. The adjustment plan is a specific scheme developed based on the audit results to correct conflicting parameters and optimize the design content in the documents to be audited. It covers the scope of parameter adjustment suggestions, the technical basis, etc. The adjustment amount is the specific correction value or range determined for the conflicting parameters, used to eliminate parameter conflicts and ensure the feasibility of the project design. Generating the project audit result based on the audit results of related items and then deriving the adjustment plan in reverse is necessary because it is necessary to evaluate the design quality from the overall project perspective, while providing actionable correction directions for design issues, ensuring that the audit work forms a closed loop.

[0034] First, the audit results of each related item are integrated and processed. A hierarchical aggregation method is used to classify the audit results of related items by project segment, such as substation, transmission line, and distribution equipment. The number of qualified and unqualified related items and the main conflict types in each segment are counted. Then, the overall audit results of the project are summarized to clarify whether the project is qualified, the main conflict concentration areas, and the overall risk level. Next, based on the feasibility analysis results of the conflict parameters in the audit results, the conflict parameters are processed. For parameters with minor conflicts that are compatible, the optimal value is determined as the adjustment amount by combining simulation results and technical specifications. For example, if there are two compliant values ​​for a conductor cross-section parameter, the value with lower loss is selected as the adjustment amount. For parameters with severe conflicts that are incompatible, a parameter back-calculation method is used, combined with the constraints of the local electrical topology, such as voltage level constraints and power transmission requirements, to calculate the parameter value that complies with the specifications and is suitable for the existing topology as the adjustment amount. If adjusting a single parameter cannot resolve the conflict, a combined adjustment amount for multiple parameters is determined. Subsequently, the adjustments are analyzed in conjunction with the local electrical topology. Power system simulation software, such as PSCAD, is used to verify the topology's operational indicators after the adjustments, ensuring that the system's voltage and current stability meet requirements. Simultaneously, considering the type and format of the documents to be reviewed, the specific documents requiring modification in the adjustment plan are identified, such as parameter annotations in design drawings and technical parameter descriptions in design texts. The modification steps, basis, and verification standards are determined, generating a complete adjustment plan. The advantage of this approach is that it enables overall control over the engineering design review, ensures the relevance and feasibility of the adjustment plan, provides clear guidance for modifying documents to be reviewed, and promotes improved design quality.

[0035] Another embodiment of the present invention provides an audit system for quality supervision and inspection of power transmission and transformation engineering design. For details, please refer to [link to relevant documentation]. Figure 2 , Figure 2 The diagram shown is a structural schematic of a review system for quality supervision and inspection of power transmission and transformation engineering design, according to one embodiment of the present invention, comprising: The analysis module is used to analyze the documents to be reviewed for the target power transmission and transformation project, and to determine the design drawings and design text in the documents to be reviewed based on the analysis results. The association module is used to convert design drawings into design drawing text, and associate the design drawings and design text based on the cosine distance between them to obtain a pre-approval document; The topology module is used to extract the design parameters of each related item in the pre-approval document, perform conflict analysis on the design parameters, and construct a local electrical topology based on the consistent parameters in the design parameters. The conflict module is used to add conflict parameters to the local electrical topology for feasibility analysis and generate the review results for each related item based on the analysis results. The adjustment module is used to generate the audit results of the target power transmission and transformation project based on the audit results of each related item, and to derive at least one adjustment scheme based on the audit results. The adjustment scheme is used to adjust the documents to be audited for the target power transmission and transformation project.

[0036] Preferably, the analysis module includes: The identification unit is used to identify the type of the document to be reviewed, and classify the document to be reviewed based on the identification results to obtain the image document to be extracted and the text document to be extracted. Feature units are used to extract feature information from the image document and the text document to be extracted, respectively. The determination unit is used to analyze feature information and determine design drawings and design text.

[0037] Preferably, the design drawing and design text are associated based on the cosine distance between them, including: The conversion unit is used to convert design drawing text and design text into design drawing text vector and design text vector, respectively. The similarity unit is used to obtain the similarity between the design image text vector and the design text vector based on the cosine distance technique; The correlation degree unit is used to determine the correlation degree between the design drawing text vector and the design text vector based on similarity, and to associate the design drawing corresponding to the design drawing text vector and the design text corresponding to the design text vector with a correlation degree higher than a preset threshold.

[0038] Preferably, the topology module includes: The extraction unit is used to extract electrical parameter information from the associated items to obtain an electrical parameter set. The classification unit is used to classify electrical parameter sets based on the design drawings in the associated items, perform conflict analysis on the classification results, and use the analysis results to filter the electrical parameter sets to obtain consistent parameters. Construction unit, used to build local electrical topology based on consistent parameters.

[0039] Preferably, based on the audit results of each related item, an audit result for the target power transmission and transformation project is generated, and at least one adjustment scheme is derived in reverse from the audit results, including: The integration unit is used to integrate the audit results of each related item to obtain the audit results of the target power transmission and transformation project. The adjustment unit is used to process conflict parameters based on the feasibility analysis results of the conflict parameters in the audit results, and obtain the adjustment amount of the conflict parameters. The analysis unit is used to analyze the adjustment amount and the local electrical topology to generate an adjustment plan.

[0040] Another embodiment of the present invention provides audit requirements for the quality supervision and inspection of power transmission and transformation engineering design, specifically including: I. Randomly check engineering design review documents (1) Engineering design documents 1. Preliminary design specifications, drawings, material list, and preliminary cost estimate; necessary supporting documents (if technical principles are inconsistent); 2. Construction drawings, design specifications, drawings, material lists, budgets; survey data. It is necessary to determine the document type and whether it is part of the design documents for this project.

[0041] (2) Engineering design review and approval documents 1. Feasibility study review opinions and approval documents; project name and approval date are later than the review opinions; 2. Preliminary design review comments and preliminary design approval documents; 3. Review comments on construction drawing design; 4. Environmental impact assessment and soil and water conservation report (Environmental Impact Report / Form for Construction Project), Soil and Water Conservation Registration Form / Soil and Water Conservation Plan Report for Construction Project) and approval documents (approval documents from the ecological and environmental protection authorities, water administration authorities, or soil and water conservation plan approval authorities). It is necessary to determine the document category and whether it is a design review and approval document for the project.

[0042] II. Engineering Design Management Documents (1) Engineering design contract design tender documents; stamp, QR code, signing date, contract template name, design unit name. It is necessary to determine the document type, whether it is the contract for the project, and whether it is a formally signed contract.

[0043] (2) Preliminary design internal audit record / internal audit comments; for projects of a certain scale, an internal audit comment from the Economic Research Institute is required; for projects of a smaller scale, no internal audit comment from the Economic Research Institute is required. It is necessary to determine the document type and whether it is an internal audit record for this project.

[0044] (3) Technical problem communication and reporting information form; it is necessary to determine the document type and whether it is the communication and reporting form for this project, and identify the differences between the preliminary design specification and the communication and reporting form: check whether the changes in the communication and reporting form are consistent with the corresponding parts in the preliminary design text.

[0045] (4) Preliminary design and construction drawing design written review record sheets; it is necessary to determine the document type, whether it is a review record sheet for this project, and whether review record sheets were provided for both the preliminary design and construction drawings.

[0046] (5) Materials related to the implementation of the "four unifications" for general equipment, such as the internal audit record of the tender documents, equipment data confirmation form (drawing confirmation stage, equipment delivery stage), equipment supplier performance status form, etc.; it is necessary to determine the document category, whether it is a material related to the implementation of the "four unifications" for general equipment in this project, and whether the equipment data is complete and consistent with the design text.

[0047] (6) Design change list, design change order contact form, design change approval form; it is necessary to determine the document type, whether it is related to the design change of the project, and whether it is due to design reasons.

[0048] (7) Design quality evaluation form, design fee deduction materials and interview record; it is necessary to determine the document category and whether it is related to the design quality evaluation and assessment of the project.

[0049] In accordance with the requirements for design quality supervision and inspection pre-review management, the design quality supervision and inspection pre-review intelligent agent constructed through the artificial intelligence platform adopts knowledge base standards and prompt words to carry out routine application. Relying on large model analysis and reasoning, intelligent text generation and other capabilities, it automatically verifies the completeness and correctness of the submitted materials, the consistency and logic between materials, conducts preliminary comparison of the implementation of substation engineering technical principles, and automatically raises risk warnings for typical clauses through the analysis of technical standards and management documents, intelligently generates notification materials, and strengthens risk prevention and control.

[0050] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc.

[0051] Accordingly, embodiments of the present invention provide a computer-readable storage medium comprising a stored computer program, wherein, when the computer program is executed, it controls the device containing the computer-readable storage medium to perform steps in the audit method for quality supervision and inspection of power transmission and transformation engineering design as described in the above embodiments, for example... Figure 1 Steps S1 to S5 as described above.

[0052] Compared to existing technologies that rely solely on single-page scanning and isolated document review, leading to a failure to detect cross-document inconsistencies, this invention fundamentally changes the logical unit of review by constructing semantic relationships between design drawings and design text, shifting from single pages to related image-text items. Specifically, this invention first analyzes the documents to be reviewed for the target power transmission and transformation project, accurately identifying design drawings and design text. Then, the design drawings are converted into design drawing text, and precise image-text pairing is achieved based on cosine distance, forming a pre-review document. On this basis, design parameters are extracted for each related item, conflict analysis is conducted, and a local electrical topology is constructed based on consistent parameters. Conflicting parameters are incorporated into this topology for feasibility verification, thereby generating fine-grained related item review results. Finally, all related item results are aggregated to form an engineering-level review conclusion, and an executable adjustment plan is derived in reverse. This method effectively breaks down semantic barriers between multi-source heterogeneous documents, achieving joint judgment of cross-document consistency verification and design logic rationality. It significantly improves the systematicness, accuracy, and automation level of power transmission and transformation project design quality supervision and inspection, solving the fundamental deficiency of existing technologies that only see single pages but not the whole picture in complex engineering scenarios.

[0053] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A method for reviewing and supervising the design quality of power transmission and transformation projects, characterized in that, include: The obtained documents for the target power transmission and transformation project to be reviewed are analyzed, and the design drawings and design texts in the documents to be reviewed are determined based on the analysis results. The design drawing is converted into design drawing text, and the design drawing and the design text are associated based on the cosine distance between them to obtain a pre-approval document; The design parameters of each associated item in the pre-approval document are extracted, conflict analysis is performed on the design parameters, and a local electrical topology is constructed based on the consistent parameters in the design parameters. The conflict parameters are added to the local electrical topology for feasibility analysis, and the review results of each associated item are generated based on the analysis results. Based on the review results of each of the aforementioned related items, an review result for the target power transmission and transformation project is generated, and at least one adjustment scheme is derived in reverse based on the review result, wherein the adjustment scheme is used to adjust the document to be reviewed for the target power transmission and transformation project.

2. The review method for quality supervision and inspection of power transmission and transformation engineering design as described in claim 1, characterized in that, The step of analyzing the documents to be reviewed for the target power transmission and transformation project, and determining the design drawings and design texts in the documents to be reviewed based on the analysis results, includes: The document to be reviewed is type-identified, and the document to be reviewed is classified based on the identification results to obtain the image document to be extracted and the text document to be extracted; Extract feature information from the image document and the text document to be extracted, respectively; The feature information is analyzed to determine the design drawing and the design text.

3. The review method for quality supervision and inspection of power transmission and transformation engineering design as described in claim 1, characterized in that, The association of the design drawing and the design text based on the cosine distance between them includes: Convert the design drawing text and the design text into a design drawing text vector and a design text vector, respectively. The similarity between the design graphic text vector and the design text vector is obtained based on the cosine distance technique. The degree of association between the design drawing text vector and the design text vector is determined by the similarity. The design drawings corresponding to the design drawing text vectors with a degree of association higher than a preset threshold and the design texts corresponding to the design text vectors are associated.

4. The review method for quality supervision and inspection of power transmission and transformation engineering design as described in claim 1, characterized in that, The process of extracting design parameters for each associated item in the pre-approval document, performing conflict analysis on the design parameters, and constructing a local electrical topology based on consistent parameters in the design parameters includes: Electrical parameter information is extracted from the associated items to obtain an electrical parameter set; Based on the design drawings in the associated items, the electrical parameter set is categorized, conflict analysis is performed on the categorization results, and the electrical parameter set is filtered based on the analysis results to obtain the consistent parameters; The local electrical topology is constructed based on the consistent parameters.

5. The method for reviewing and supervising the design quality of power transmission and transformation projects as described in claim 1, characterized in that, The process involves generating an audit result for the target power transmission and transformation project based on the audit result of each associated item, and then deriving at least one adjustment plan based on the audit result, including: The audit results of each of the aforementioned related items are integrated and processed to obtain the audit results of the target power transmission and transformation project; Based on the feasibility analysis results of the conflict parameters in the audit results, the conflict parameters are processed to obtain the adjustment amount of the conflict parameters; The adjustment amount is analyzed in conjunction with the local electrical topology to generate the adjustment scheme.

6. A review system for supervising and inspecting the design quality of power transmission and transformation projects, characterized in that, include: The analysis module is used to analyze the documents to be reviewed for the target power transmission and transformation project, and to determine the design drawings and design text in the documents to be reviewed based on the analysis results. The association module is used to convert the design drawing into design drawing text, and associate the design drawing and the design text based on the cosine distance between them to obtain a pre-approval document; The topology module is used to extract the design parameters of each associated item in the pre-approval document, perform conflict analysis on the design parameters, and construct a local electrical topology based on the consistent parameters in the design parameters. The conflict module is used to add conflict parameters to the local electrical topology for feasibility analysis and generate an approval result for each associated item based on the analysis results. The adjustment module is used to generate the audit result of the target power transmission and transformation project based on the audit result of each of the related items, and to derive at least one adjustment scheme based on the audit result, wherein the adjustment scheme is used to adjust the document to be audited for the target power transmission and transformation project.

7. The audit system for quality supervision and inspection of power transmission and transformation engineering design as described in claim 6, characterized in that, The analysis module includes: The identification unit is used to identify the type of the document to be reviewed, classify the document to be reviewed based on the identification result, and obtain the image document to be extracted and the text document to be extracted. Feature units are used to extract feature information from the image document to be extracted and the text document to be extracted, respectively. The determining unit is used to analyze the feature information and determine the design drawing and the design text.

8. The audit system for quality supervision and inspection of power transmission and transformation engineering design as described in claim 6, characterized in that, The association of the design drawing and the design text based on the cosine distance between them includes: A conversion unit is used to convert the design drawing text and the design text into a design drawing text vector and a design text vector, respectively. A similarity unit is used to obtain the similarity between the design graphic text vector and the design text vector based on the cosine distance technique. The association degree unit is used to determine the association degree between the design drawing text vector and the design text vector based on the similarity, and to associate the design drawing corresponding to the design drawing text vector and the design text corresponding to the design text vector whose association degree is higher than a preset threshold.

9. The audit system for quality supervision and inspection of power transmission and transformation engineering design as described in claim 6, characterized in that, The topology module includes: The extraction unit is used to extract electrical parameter information from the associated items to obtain an electrical parameter set; The classification unit is used to classify the electrical parameter set based on the design drawing in the associated item, perform conflict analysis on the classification results, and filter the electrical parameter set based on the analysis results to obtain the consistent parameters. A construction unit is used to construct the local electrical topology based on the consistent parameters.

10. The audit system for quality supervision and inspection of power transmission and transformation engineering design as described in claim 6, characterized in that, The process involves generating an audit result for the target power transmission and transformation project based on the audit result of each associated item, and then deriving at least one adjustment plan based on the audit result, including: An integration unit is used to integrate the audit results of each of the aforementioned related items to obtain the audit results of the target power transmission and transformation project. The adjustment unit is used to process the conflict parameter based on the feasibility analysis results of the conflict parameter in the audit results, and obtain the adjustment amount of the conflict parameter; An analysis unit is used to analyze the adjustment amount and the local electrical topology to generate the adjustment scheme.

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