50 results about "One-line diagram" patented technology

The invention discloses a chemical single line diagram material identification method, device and equipment and a storage medium, and the method comprises the steps: building a corresponding relation model of a serial number and a line spacing proportion value in a chemical single line diagram material table, and detecting a to-be-identified table according to the corresponding relation model; when it is detected that the serial numbers of the serial number columns of the to-be-recognized table are continuous and the line spacing is within a preset proportion range, corresponding multi-line information is merged; according to the method, the table auxiliary line of the to-be-recognized table is obtained, AI recognition is performed on the to-be-recognized table according to the table auxiliary line, and the recognition result is obtained, so that various material information in the chemical single line diagram can be accurately recognized, and compared with a traditional method, manual intervention is reduced, and the workload and error risk of manual processing are reduced; the method provides more efficient and accurate support for material information management in the chemical engineering design and construction process, has important practical application value and wide market prospect, and improves the speed and efficiency of chemical single line diagram material identification.

The invention discloses a defect hidden danger data diagnosis method based on a distribution network SVG single line diagram. The method comprises the steps that basic analysis is conducted on the input SVG single line diagram, basic geometric figure elements are extracted and normalized, a topological connection relation is preprocessed, and a multi-level index structure is constructed; a dynamic topology path reasoning mechanism is constructed, and reasoning and self-adaptive optimization of the topological relation of the electrical equipment are realized through path consistency calculation, topological entropy minimization and a dynamic topology updating strategy; a self-adaptive implicit relational knowledge graph is constructed, and semantic association between the electrical equipment is established through explicit topological relation fusion, implicit function dependence reasoning and dynamic semantic embedding optimization; and constructing a multi-modal time sequence feature vector, calculating the hidden danger risk of the equipment by adopting a space-time defect probability estimation model, and giving an alarm through a dynamic risk early warning strategy to realize prediction and early warning of the hidden danger of the defects of the electrical equipment. According to the method, the problems of semantic understanding, topological reasoning, state inference and defect prediction of the SVG single line diagram are effectively solved.

The invention provides a construction method of a power distribution system topology model, a generation method of a power distribution single line diagram, a power distribution monitoring system and a computer readable storage medium, the construction method of the power distribution system topology model comprises the steps of dividing a power distribution system into a plurality of modules to obtain a modular model, and the modular model comprises a conductor in the power distribution system; based on the modular model, constructing an asset model of the power distribution system to describe an electric conductor, the electric conductor comprising an uninterruptible power supply; and constructing a topological model based on the aggregation relationship between the asset model and the conductors. According to the embodiment of the invention, the conductors are used as units, the conductors in the power distribution system can be covered, the topological model can reflect the aggregation relation between the conductors, the connection relation and the current direction between the conductors can be visually obtained, and the power distribution single line diagram can be quickly and accurately generated.

The invention relates to the field of hydropower station relay protection, and provides a method for establishing and setting verification of a hydropower generator-transformer group relay protection model in order to reduce the setting verification difficulty and improve the calculation accuracy at the same time, a united simulation model is established in combination with a single line diagram mode of a PSASP and the numerical simulation capability of MATLAB, and the calculation accuracy is improved. The problem that setting verification in PSASP software does not meet the actual requirements of hydropower station engineering is solved. According to the method, the protection configuration diagram of the PSASP is verified and set, and the original manual calculation and setting verification process is converted into a program, so that the error rate is reduced, and the calculation time is saved. In addition, the current, voltage and other signals of the main equipment during each protection action can be visually represented. The operation difficulty of workers is reduced, and a new means is provided for relay protection configuration and setting of the hydropower station.

The application discloses a table information extraction method, device and equipment of a PDF format pipeline single-line diagram document and a medium, relates to the pipeline engineering field, and comprises the following steps: converting a PDF format pipeline single-line diagram document with an arbitrary layout into a target pipeline single-line diagram in an image format, cutting out region of interest images corresponding to a material table, a design parameter table and a project table from the target pipeline single-line diagram according to a template matching algorithm; removing irrelevant content, drawing auxiliary lines and extracting table information from the region of interest image corresponding to the material table to obtain material table data; identifying text blocks from the region of interest images corresponding to the design parameter table and the project table, determining the row and column attribution relationship and the entity mapping relationship between the semantic entities based on the semantic entities, semantic categories and position information of the text blocks, integrating the semantic entities to obtain design table data / project table data; and standardizing non-standardized table headers in the extracted table data and converting the non-standardized table headers into an excel table file.

The present invention provides a design system and method for the main circuit and parameters of a flexible DC transmission project, including: a human-machine interface layer, an integrated tool layer, and a data management layer; wherein the human-machine interface layer is used to: determine the design process of the main circuit and parameters corresponding to each flexible DC transmission project and the input data based on the form of human-computer interaction, and display the results; the data management layer is used to: store the relevant information of the main circuit and parameters and the template information used in the design process; the integrated tool layer is used to: integrate the tools required for the design process, and perform calculations using the input data provided by the human-machine interface layer and the templates provided by the data management layer. The present invention integrates the single-line diagram design, system parameter calculation, equipment parameter calculation, and equipment inventory generation together, establishes an automatic data transfer relationship, avoids the problems of repeated parameter input, easy errors in manual calculation, and low efficiency, and greatly improves the efficiency and accuracy of the main wiring and main circuit parameter design.

The disclosed parameterized steel bar modeling method for fitting the surface reinforcement of the draft tube comprises the following steps: realizing three-dimensional modeling of the draft tube according to the single-line diagram section data and setting control parameters, and then creating the circumferential and longitudinal steel bars of the draft tube based on the obtained model. By introducing the parameterization technology, the shape of the draft tube is adjusted by using the outer expansion section parameters, the positioning points are divided along the outer expansion ridge line and mapped to the interpolation profile, the circumferential steel bars are generated by anchoring and overlapping after cutting according to the start and end sections of the elbow pipe, and the longitudinal steel bars are generated by positioning and connecting according to the maximum circumference and increasing the anchoring section. The technical problem of self-adaptive fitting arrangement of the steel bars on the surface of the complex draft tube is solved, the rapid generation and modification of the steel bar model are realized, the design efficiency is significantly improved, the geometric accuracy of the model is ensured, and a reliable foundation is provided for subsequent drawing, material statistics and design changes.

The application discloses a method and related device for automatically filling setting parameters of distribution network switches, wherein the method comprises the following steps: according to the interface specification of a plurality of operation systems of the distribution network, performing specification processing on the interface of a distribution network setting calculation system; acquiring a GIS file of a feeder and a debugging library file of a distribution network automation terminal device; selecting primary equipment parameter information through the GIS file to perform first pre-filling on the parameters of each primary electrical switch in a single-line diagram; selecting secondary equipment parameter information through the debugging library file to perform second pre-filling on the parameters of each primary electrical switch; and further, in response to an adjustment instruction input by a user, adjusting the related parameters of the corresponding primary electrical switch according to the adjustment instruction. Thus, the technical problem of large workload and low efficiency in the prior art is solved.

The application discloses a kind of distribution network single-line diagram model checking comprehensive display method and tool, the method includes: step S1: opening single-line diagram and carrying out display in visual way;Step S2: show diagram module checking result, according to the checking result list fed back by diagram module checking background service, according to semantic checking, data integrity checking, diagram module consistency checking, topological connectivity checking, non-examination equipment list classification display;Step S3: checking result auxiliary data repair.The application provides a kind of visual method and tool to intuitively show diagram module checking result, can be positioned to the specific object in single-line diagram by result reverse, to avoid consuming a lot of manpower according to problem list to analyze and investigate problem, realizes the efficient and accurate problem single-line diagram repair.

The invention discloses a method and a system for quickly forming a grid layout of a single line diagram of a power grid, and relates to the technical field of drawing of a power system.According to the method and the system, the number of rows and columns of grids is determined by analyzing a target graph, a dynamic adjustable grid frame is constructed, cells are filled with electrical equipment graphic elements, and intervals and connecting line placeholders are reserved; and automatically calculating primitive positions and connecting line paths based on the grid topology, generating a canvas according to the number of rows and columns, and completing drawing. According to the method, complex drawing is simplified into grid filling operation, rapid and standardized generation of the single line diagram is achieved, the problems that manual drawing is low in efficiency, the tool threshold is high, and automatic tool data dependence is high are effectively solved, and the method has the advantages of being reasonable in layout, automatic in line connection and wide in applicability.

The invention discloses a power grid topological data construction method and system, and relates to the technical field of topological data processing, and the method comprises the steps: obtaining power grid equipment data through completion data or unmanned aerial vehicle surveying and mapping, and employing a high-precision positioning or target detection technology by an unmanned aerial vehicle; based on the data, adopting a structured table, a visual interface, a single line diagram or an equivalent circuit mode to construct a preliminary topology; topologies are constructed according to power transmission, power transformation, power distribution and power utilization professions, wherein the power transformation profession is expressed synchronously from SCADA through a white box or is expressed in a simplified mode through a black box; and all professional topologies are integrated to generate a whole-network topological graph, and a geographic trend graph is reversely generated to improve the performance. The system comprises a data acquisition module, a topology processing module, a professional construction module and an integration output module. The method conforms to habits of all professionals, topological data entry is simplified, and maintenance efficiency and accuracy are improved.

The invention relates to a power distribution network topology simplification and single line diagram automatic generation method and system, and a medium. The method comprises the following steps: analyzing a distribution network line CIM model file; generating simplified equipment information; determining a connection relationship between the topological structure of the power distribution network and the equipment; determining a trunk line; searching a transformer connected with each connection node on the main line, determining branch lines, and combining the branch lines; simplifying in-station equipment of a switching station, a ring main unit, a box-type substation and a power distribution station, and generating a simplified connection relation; calculating line segment information, including circuit breakers / load switches on a main line, segment capacity and branch capacity, so that dispatchers can quickly know the running state of the power distribution network; according to the power distribution network single line diagram generation method and device, the simplified power distribution network line single line diagram is automatically generated, and a foundation is laid for intelligent management of the power distribution network, rapid fault positioning, efficient access of new energy and optimized operation.

This application relates to a method, system, and medium for simplifying distribution network topology and automatically generating single-line diagrams. The method includes parsing the CIM model file of the distribution network lines; generating simplified equipment information; determining the distribution network topology and the connection relationships between equipment; determining the main lines; locating the transformers connected to each connection node on the main lines, determining branch lines, and merging the branch lines; simplifying the equipment within the switching stations, ring main units, prefabricated substations, and distribution stations to generate simplified connection relationships; calculating line segment information, including circuit breakers / load switches on the main lines, segment capacity, and branch capacity, so that dispatchers can quickly understand the operating status of the distribution network; and drawing a single-line diagram of the distribution network based on the simplified equipment information and connection relationships. This application automatically generates simplified single-line diagrams of distribution network lines, laying the foundation for intelligent management of distribution networks, rapid fault location, efficient access to new energy sources, and optimized operation.

The present application provides a kind of process single-line diagram weld AI identification method, medium and system, belong to weld identification technical field, the present application is by to process pipeline single-line diagram PDF file starting vector channel and raster channel Double-channel analysis and generate global coordinate mapping table, the double-channel result is sent into curvature perception weld detection model output candidate frame and obtains page level weld candidate frame set by non-maximum suppression, executes ant colony pheromone diffusion path tracking algorithm based on pipeline skeleton diagram to determine weld order sequence, executes different numbering strategy according to adaptive numbering confidence comprehensive score value and generates weld information table, executes perspective correction after sending in character recognition module after executing the certificate image of construction personnel to fill the result into weld information table, to field variation trigger approval process and synchronize data to welding management platform, solve the problem that process pipeline single-line diagram weld cannot be accurately identified under complex topological pipeline structure.

The invention discloses an automatic calculation method for constant value accounting of a power supply and distribution system based on deep learning. The method comprises the following steps: establishing an equipment database; in combination with historical operation and maintenance data and electrical parameters, constructing a deep neural network model to learn and predict protection constant value calculation of the power supply and distribution equipment; according to the power grid topological structure and the equipment parameters, a deep learning short-circuit current calculation model is constructed and trained; inputting equipment parameters into the short-circuit current calculation model, automatically calculating a constant value of the equipment, and outputting a setting calculation book according to a setting calculation principle in combination with power grid operation conditions and a short-circuit current calculation result; outputting a constant value matching graph by combining a calculation result of the deep neural network model with a constant value parameter of a setting calculation book; generating a short-circuit current calculation book and a setting calculation book report according to the results of the automatic constant value accounting and the protection cooperation calculation; and a single line diagram, a short circuit impedance diagram and a constant value matching diagram interface are realized through a configuration interface, and related calculation results are displayed in corresponding diagrams.

The invention discloses a reactive power configuration method and system for converter stations in a multi-terminal high-voltage direct-current power transmission project. The reactive power configuration method comprises the following steps: constructing a high-voltage direct-current power transmission system single line diagram in a target power transmission project; determining a rated trigger angle and a rated turn-off angle of the inverter side; processing the rated trigger angle and the rated turn-off angle to obtain reactive power consumption of the converter; processing the constructed high-voltage direct-current transmission impedance model to obtain a full-band harmonic impedance curve; processing the rated turn-off angle and the current value obtained by real-time detection to obtain harmonic current; determining a minimum filter group number based on the harmonic voltage distortion rate; and inputting the reactive power consumption of the converter, the minimum filter group number and the reactive power capacity of the high-voltage direct-current power transmission system into a pre-constructed inductive reactive power capacity relational expression, and determining an inductive reactive power capacity configuration scheme. According to the method provided by the embodiment of the invention, the high-voltage direct-current power transmission system in the high-voltage direct-current power transmission project is reasonably configured, so that the operation performance of the direct-current system is optimal.

This invention discloses a method, apparatus, and storage medium for generating a fault inspection strategy for a distribution network. The method includes: acquiring single-line diagram data, geographical location data, and initial state data of multiple hardware devices in the distribution network when the distribution network is in a fault condition; determining the initial topology of the distribution network based on the single-line diagram data and geographical location data; inputting the initial topology and initial state data into a target topology model of the distribution network for analysis to obtain multiple areas and devices to be inspected; inspecting the areas and devices based on the target inspection resource information, target inspection constraints, and target inspection function of the distribution network to obtain inspection results; and generating a fault inspection strategy for the distribution network based on the inspection results. This invention solves the technical problem of low efficiency in fault inspection of distribution networks.

The application discloses a chemical single-line diagram pipe support information extraction method, which first analyzes the layout of the chemical single-line diagram, generates and screens target candidate regions based on multiple source prior characteristics such as text hot areas, lead wire endpoints and graphic element densities; long straight line background suppression is performed in the candidate regions to weaken pipeline interference, and a multi-scale feature pyramid network is combined to perform high-precision detection of small symbols; subsequently, candidate triplets of associated symbols, characters and line items are constructed; a multi-modal large model is introduced to perform deep semantic judgment, OCR error correction and attribute completion on the triplets, and output support objects with comprehensive confidence; finally, the chemical field rule library and knowledge graph are used for verification, and a self-adaptive fallback mechanism is triggered when the verification fails or the confidence is insufficient. The whole-process closed loop from knowledge recognition to cognitive understanding to expert verification is realized, and the integrity and accuracy of the pipe support information extraction are significantly improved.

The present invention relates to a method for fault analysis and judgment of signals from zone IV in zone I based on data communication. The present invention solves the problems of the prior art. The key points of its technical solution are as follows: comprising the following steps: 1. creating a fault indicator model and a ledger in a power grid resource business platform, completing the connection in a single-line diagram, and simultaneously pushing the model to the master stations of zones I and IV through the single-line diagram change process; 2. distinguishing between ordinary switches and intelligent switches, and simultaneously creating intelligent switch models and ledgers in the power grid resource business platform; 3. adding system graphic transmission from zone I to zone IV, automatically triggering the transmission when the zone I graphic changes, and automatically updating the zone IV system diagram; 4. implementing a fault analysis and judgment method based on a distribution transformer power loss signal, and performing analysis and judgment according to the analysis and judgment start conditions, judgment and analysis basis, and fault analysis and judgment processing logic.

The invention discloses a WFS-based power distribution network geographic data synchronization method and system, and the method comprises the steps: carrying out the initialization processing of the power distribution network geographic data in a process that a power distribution network automatic system deploys a power distribution network map module, and obtaining the equipment graphic element name information from a power distribution network single line diagram file, associating the primitive name information with all power distribution network object geographic data stored in a relation model library, and then synchronizing to a geographic database; after the distribution network map module is deployed and operates normally, establishing a change monitoring mechanism for the distribution network object model data; when the change of the object data of the power distribution network in the relation model library is monitored, extracting change information corresponding to the change data, and writing the change information into the geographic database through WFS service to complete the synchronous updating of the geographic data of the power distribution network; according to the invention, multi-system integration difficulty can be reduced, and efficient operation of a power distribution network automation system is facilitated.

The invention discloses a fractal coding and uniform layout distribution network single line diagram automatic mapping method and system, and the method comprises the steps: obtaining the basic information of a power distribution network, and carrying out the fractal coding of equipment on a power distribution line based on a fractal similarity principle; key node information is extracted, and a new number of each key node is calculated by adopting a uniform layout algorithm according to the fractal codes; and according to the new number of each key node, constructing an independent power supply path layer for each key node by adopting a path connection method and taking a feeder switch as a starting point, and superposing all the layers to form a distribution network single line diagram. According to the method, rapid reconstruction and automatic mapping of the distribution network topology structure are carried out by adopting a fractal similarity principle and a small text data volume, a distribution network single line diagram which is uniform in layout and clear and easy to read can be automatically generated, meanwhile, the function of rapid updating of equipment new input and transaction is achieved, the method is simple and convenient, the workload of field graph maintenance personnel is effectively reduced, and the efficiency is improved. And the graph reality consistency of the generated distribution network single line diagram is ensured.

The invention provides a single line diagram generation method and device based on a logical topological structure, equipment and a medium, and belongs to the technical field of single line diagram generation. Determining each electrical device included in the target logic topological structure, a subordination relationship among the electrical devices and a connection relationship among the electrical devices; determining the number of layers of a to-be-generated single line diagram based on the subordination relationship between the electrical devices; determining a device function type corresponding to each electrical device; determining connection attributes among the electrical devices based on the connection relations among the electrical devices and the respective corresponding device function types; determining a primitive corresponding to each electrical device; and generating a single line diagram corresponding to the target logic topological structure based on the primitives corresponding to the electrical devices, the number of layers of the to-be-generated single line diagram and the connection attributes between the electrical devices. According to the invention, the generation from the logical topological structure to the single line diagram can be realized.

A method and a system for generation of a Continuous Function Chart (CFC). The method includes receiving a Single Line Diagram (SLD) associated with one or more substations. The SLD includes a plurality of topology equipments. Further, the method includes identifying a category associated with each topology equipment of the plurality of topology equipments, in the SLD. Furthermore, the method includes determining a set of operational rules corresponding to the identified category of each topology equipment. Moreover, the method includes generating the CFC corresponding to each topology equipment based on the determined set of operational rules.

The application discloses a kind of power single-line diagram equipment marking method and device, belong to marking field, and the present application is by obtaining work ticket text data and power single-line diagram file, utilize the work ticket analysis model constructed based on historical work ticket data and preset power equipment hierarchical subordinate rule, work ticket text data is converted into the hierarchical path object containing power equipment entity and its hierarchical subordinate relationship.Subsequently, power single-line diagram file is parsed, and the drawing data model containing electrical equipment node, equipment interconnection and equipment space geometric information is constructed.Then, based on hierarchical path object, hierarchical constraint graph traversal is executed to drawing data model, and candidate equipment set is screened out, and target equipment is determined by spatial proximity check.Finally, according to work ticket text data, target equipment is marked, and the present application effectively solves the problem that power system cannot be accurately and efficiently marked in prior art.

The application relates to the technical field of distribution network relay protection, in particular to a relay protection core fixed value management method based on a distribution network GIS system, which can solve the problem that the process of operation personnel sequentially searching for the relay protection fixed value of corresponding switches in the system is relatively complicated. The method comprises the following steps: obtaining relay protection core fixed values of a distribution network line; obtaining primary values of current fixed values corresponding to each component of the distribution network line, wherein the primary values of the current fixed values of each component are obtained by converting secondary values based on relay protection core current fixed values of the distribution network line; drawing a GIS single-line sketch of the distribution network line, wherein the GIS single-line sketch of the distribution network line is obtained based on a GIS single-line diagram of the distribution network line; and marking the primary values of the current fixed values corresponding to each component of the distribution network line into the GIS single-line sketch of the distribution network line to form a distribution network relay protection fixed value matching diagram.

The invention discloses an intelligent single line diagram normalization verification system and method based on machine learning. The system comprises an input layer, a core processing layer, an intelligent evaluation layer and an output layer. The input layer is used for inputting or importing a single line diagram drawing file; the core processing layer is used for carrying out identification, feature extraction and storage on the imported single line drawing; the intelligent evaluation layer is used for carrying out multi-dimension scoring on a single line drawing; and the output layer is used for outputting a corresponding single line diagram normative verification report according to the evaluation result. By constructing the hybrid learning model based on the deep convolutional network and the graph neural network, the limitation of a traditional rule engine is broken through, intelligent evaluation and automatic graph formation optimization suggestion of the single line graph quality are realized, and the system can realize intelligent evaluation of the single line graph quality according to a power specification model standard. The normalization of the single line diagram network frame topology is verified by combining an AI algorithm, a verification result is output, a drawing unit is assisted to optimize the drawing quality of the single line diagram, and the practical level is greatly improved.

The present invention relates to the field of power system automation, and provides a transient stability evaluation method and system for an electrical system of a nuclear power plant. The method comprises: constructing an alternating-current power supply system model of the nuclear power plant on the basis of a single-line diagram of the electrical system of the nuclear power plant; acquiring operating conditions of the electrical system of the nuclear power plant, and on the basis of the operating conditions, setting corresponding load conditions and system parameters; simulating the operating conditions of the power plant using the alternating-current power supply system model of the nuclear power plant, and recording an electrical quantity in a power supply switching simulation process under each operating condition; and performing transient stability evaluation on the electrical system of the nuclear power plant on the basis of the electrical quantity. By setting three quantitative criteria, a power supply switching situation of the nuclear power plant is intuitively predicted, thereby improving reliability. The present invention comprehensively considers the impact of a system on motors and the influence on a setting value of a circuit breaker during power supply switching, thereby improving the accuracy and practicality of an evaluation result. Designers and maintenance personnel can determine the feasibility of system voltage switching in advance and discover potential risks as early as possible.

The invention provides a cross-platform power distribution design method, a medium and a product, and the method comprises the steps: employing a programming method to automatically configure a corresponding component combination for each power utilization load in a power utilization load list in a table according to a preset component configuration table, automatically forming a primary component configuration table containing all components required to be configured by the electrical load loop; automatically drawing the primary component configuration table into a drawing software interface by adopting a programming method, and automatically matching an electrical load loop corresponding to each row in the primary component configuration table with an electrical single line diagram in the drawing software at the same time; and drawing an electrical primary wiring diagram containing the information of all the electrical loads and the configuration information of the electrical load loop. According to the method, the technical problem that in the electrical primary power distribution design process of a large project, drawing of the electrical primary wiring diagram needs a lot of time is solved, after the method is adopted, the work can be completed within several minutes, and the efficiency is greatly improved.

The invention relates to a deep learning and interpretable verifiable pipeline single line diagram information extraction method and system, and belongs to the technical field of computer vision and industrial automation. The method comprises the steps that a pipeline single line diagram is acquired, and a pipeline single line diagram data set is constructed through data preprocessing of the pipeline single line diagram; processing the pipeline single line diagram data set through a multi-task attention model to obtain pipeline single line diagram information, and obtaining pipeline single line thermodynamic diagram anomaly type information through interpretability verification optimization; and processing the abnormal type information of the pipeline single-line thermodynamic diagram through abnormal closed-loop optimization to obtain model dynamic adjustment information, and updating the multi-task attention model according to the model dynamic adjustment information to realize high-precision pipeline part identification and key information extraction. The problems that traditional manual analysis is low in efficiency and an existing deep learning model is insufficient in industrial drawing feature sensitivity are solved, and the accuracy and reliability of pipeline single line diagram automatic analysis are remarkably improved.

The invention provides a distribution network line abnormal point positioning method based on a single line diagram, and the method specifically comprises the steps: screening a single line diagram of a target distribution network line, and carrying out the image recognition of the screened single line diagram; carrying out mutual verification and correction on the identified character information and primitive information, and determining coordinate information of each node in the single line diagram; performing abnormal point identification according to the operation data of the target distribution network line; and according to an abnormal point identification result, carrying out abnormal point positioning in combination with coordinate information of each node in the single line diagram. According to the method, information identification is performed on the single line diagram through image identification, mutual verification and correction are performed on the identified information, the information contained in the single line diagram is accurately obtained, meanwhile, the nodes capable of directly identifying coordinate information are obtained, and when an abnormal point is subsequently identified, the node identification efficiency is greatly improved. The abnormal point can be quickly positioned according to the identified coordinate information of the node, so that the query efficiency and the work response speed of abnormal point positioning are effectively improved, and the operation safety of a power system is guaranteed.