CN114996886A - Multi-metadata-fused complete automatic drawing system and method for distribution network single line diagram - Google Patents

Abstract

The invention belongs to the field of distribution network planning and design, and relates to a complete automatic drawing system and method for a single-line diagram of a distribution network with multivariate data fusion. module, explanatory text and dynamic legend insertion module, and graphic partial enlargement module; the picture frame and title bar drawing module, line topology drawing module, explanatory text and dynamic legend inserting module, and graphic partial enlargement module are respectively connected with the database, and the The database and the data retrieval module are connected to each other, and the line topology drawing module is connected to the local graphics magnification module; the graphic elements, legends, layers, labels, etc. Multivariate data fusion can automatically realize batch generation of single-line diagrams of distribution network.

Description

A complete set of automatic drawing system and method for single-line diagram of distribution network based on multivariate data fusion

technical field

The invention relates to a complete automatic drawing system and method of a single-line diagram of a distribution network with multivariate data fusion, and belongs to the field of planning and design of a distribution network.

Background technique

In the process of distribution network planning, design and construction, the distribution network single-line diagram is mainly drawn and generated manually by the grass-roots team. Due to the large overall workload and cumbersome and complicated procedures, the problem of inconsistency between the distribution network engineering drawings has become increasingly prominent. When a certain content is manually modified, there are often a large number of changes in planning and design results and technical data such as drawings, texts, and tables, and the untimely nature of manual graphics drawing and data processing, which greatly reduces work efficiency. If the complete set of medium and low voltage circuit drawings of the distribution network can be automatically generated, instead of manual drawing, data statistics, text writing, etc., the planning and design and intelligence level of the distribution network will be greatly improved, and the work pressure of grassroots teams will be greatly reduced.

At present, the methods for automatic generation of single-line diagrams of medium and low voltage distribution networks at home and abroad are mainly through the secondary development of professional drawing software interfaces, artificial intelligence algorithm research and judgment, etc. These methods cannot be used to achieve complete sets of diagrams, and at the same time, there is a lack of distribution line design schemes, which are practical and practical. Poor degree. Therefore, the present invention proposes a complete set of automatic drawing system and method for single-line diagram of distribution network with multivariate data fusion, and designs a friendly human-computer interaction platform and database, which can realize batch drawing of complete sets of drawings and meet the requirements of differentiated design of distribution network. .

SUMMARY OF THE INVENTION

The purpose of the present invention is, in order to solve the problem that the existing distribution network single-line diagram cannot be automatically drawn into a complete set, automatically realize the batch generation of distribution network single-line diagram drawings while ensuring the quality of graphics drawing, and reduce the graphics of distribution network grassroots teams. The workload of design and maintenance is proposed, and a complete automatic drawing system and method of single-line diagram of distribution network based on multivariate data fusion is proposed.

The technical scheme adopted in the present invention is as follows: a complete automatic drawing system for a single-line diagram of a distribution network with multivariate data fusion, including a database, a data retrieval module, a drawing module for drawing frames and title bars, a drawing module for line topology, explanatory text and dynamic legend insertion module, a graphics partial enlargement module; the picture frame and title bar drawing module, the line topology drawing module, the explanatory text and dynamic legend insertion module, and the graphic partial enlargement module are respectively connected with the database, and the line topology drawing module and the graphic partial enlargement are respectively connected The modules are connected to each other; the drawing module of drawing frame and title block, the drawing module of line topology, the inserting module of explanatory text and dynamic legend, and the partial magnifying module of graphics are called AutoCAD drawing software, combined with the equipment type, equipment connection method, equipment attribute, The wire type and other related information can realize the automatic drawing and generation of a complete set of single-line diagrams of the distribution network. The invention uses the power grid GIS system or manual input to obtain the relevant information of distribution lines and equipment and stores them in the database, retrieves the line topology according to the line and the project of the station area, and uses the coordinated calls between the modules to convert the isographic elements, legends, layers, labels, etc. Multivariate data fusion, to realize the automatic drawing of a complete set of single-line drawings of medium and low voltage distribution networks.

Further, the database is used to integrate the topology information and engineering information required for the drawing of the single-line diagram of the distribution network, and assist in the automatic drawing of the drawing of the single-line diagram of the distribution network;

The data retrieval module is used to verify the logical tightness of the database data, realize the restoration and sorting of the engineering data of the distribution network, and assist in the batch generation of engineering drawings of different distribution networks;

The picture frame and title bar drawing module is used to realize the automatic drawing of the drawing frame and the title bar and the automatic insertion of the map file by calling the picture frame size and the title bar information in the database;

The line topology drawing module is used to realize the automatic drawing and automatic generation of the drawing equipment and the line by reading the information such as the drawing scale, the equipment type, the wire type, the laying type, etc. in the database;

The description text and dynamic legend insertion module is used to realize the self-adaptive automatic drawing of the description content of the drawing and the description of the legend by reading the size information of the graphic element and the description text information in the database;

The graphic local magnification module selects the areas in the drawings with low recognizability and overlapping graphic fonts, and invokes the line topology drawing module to realize the enlargement and redrawing of the specified area, so as to automatically generate a local area with high recognizability and high definition. area graphics.

Further, the database includes a basic information database and a graphics drawing database, the data retrieval module includes a data sorting module and a data verification module, and the basic information database, the data sorting module and the data verification module are mutually interconnected. connect;

The basic information database is used to store and record line topology information such as province and city information, geographic location information, equipment model, relevant time, connection mode between equipment, equipment attributes, wire type, etc. Base;

The graphic drawing database includes a graphic element design library, a dynamic legend library, a graphic frame and a title bar database, which are used to assist in the automatic drawing of line graphic elements, legends, graphic frames and title bars;

The data sorting module classifies the data information belonging to different distribution network projects by retrieving the database line geographic location information, station area information, and time information, and assists in realizing the batch generation of different distribution network engineering drawings;

The data verification module is used to verify the rigor of the data logic by judging whether the database has isolated and incorrectly connected devices.

Further preferably, the graphic element design library is used to graphically and symbolically express the power equipment required in the distribution network, including "point", "line", "polyline", "circle", "text" ”, “Fill” and other related content primitive size information, which is used to realize the modular generation of primitive graphics and ensure the consistency and standardization of primitive graphics design.

Further preferably, the dynamic legend library obtains the name and type of the existing equipment in the drawing by querying the graphic element design library, and obtains the size of the graphic element and the text length information of the graphic element description, so as to automatically generate the drawing describing the name of the drawing equipment and the line graphic element. Legends, ensure that the legend description covers all the equipment appearing in the drawing.

Further preferably, the picture frame and title bar database is used to store the frame size data, drawing scale, map information and title bar information that conform to national standards; the title information includes the name of the line or station area to which the content of the drawing belongs, Project name, design, approval, signature information of qualified personnel for verification, description of drawing generation date, drawing record number, QR code, etc., are used to automatically generate drawing frame and title block information required by the national standard.

Further preferably, the line topology drawing module includes a graphic element connection drawing module and a labeling module. The graphic element connection drawing module reads the graphic element information in the database, and calculates the graphic element GPS conversion coordinates, the graphic element insertion point, and the graphic element placement angle for automatic drawing. Automatically draw a drawing; the labeling module includes equipment labeling and line labeling. According to the national standard stipulated that all fonts in the drawings have the same height, the distance and deflection angle between the wire and the device are obtained, and the minimum width that meets the labeling requirements is calculated in combination with the length of the labeling string. factor to realize automatic labeling of equipment and lines.

It is further preferred that the explanatory text and dynamic legend inserting module include an explanatory text inserting module and a dynamic legend inserting module; the explanatory text inserting module reads the explanatory text content in the database, and calculates corresponding each line of explanatory text by identifying the ASCII value of each character. The width of the insert, and then determine the content of the drawing description by retrieving the blank area of the drawing frame; the dynamic legend insertion module converts the information required for the drawing of the legend by querying the maximum basic size of the graphic element and the maximum length of the graphic element description text in the dynamic legend database. The row height and column width and length are automatically drawn to form a drawing legend that meets the requirements of engineering acceptance.

Further preferably, the method for calculating the GPS conversion coordinates of the graphic element, the insertion point of the graphic element, and the placement angle of the graphic element is as follows:

Step A1, retrieve the database to obtain the GPS coordinates of each device under the same power distribution network project and store them in an array, and calculate that the center point of the GPS coordinates of the array corresponds to the relative coordinate center point of the graph drawable area;

Step A2: Make the difference between the coordinates of each device in the array and the coordinates of the GPS center point, and obtain the distance between the device and the relative center point through the unit longitude and latitude corresponding to the AutoCAD millimeter coordinate value and the drawing scale, so as to obtain the relative coordinate center point as the coordinate origin. Device coordinates, the coordinate value is the drawing insertion point of the device;

Step A3: Calculate the insertion and placement angle of the graphic element. Since the database contains not only the main line data but also the branch line data, all angles related to the graphic element device in the database are inquired and stored in a temporary array, and the data is repeated in the order from small to large. Arrange and calculate the difference between each angle, and calculate the maximum angle difference;

Step A4: Calculate the angle corresponding to the angle bisector when the maximum angle difference is the maximum angle difference, and the angle is the placement angle of the primitives.

The invention also provides a complete automatic drawing method of a single-line diagram of a distribution network with multivariate data fusion, the steps are as follows:

Step S1, database entry: enter information such as distribution lines and equipment geographic location coordinates, connection topology and other information into the database;

Step S2, data logic verification: search through the data verification module whether there is isolated or incorrectly connected device data in the database, if there is, go to step S3, if not, go to step S4 directly;

Step S3: Prompt the user whether to continue generating the single-line diagram of the distribution network. If the drawing is continued, the system will automatically delete the error information in the database. line and re-execute step S1;

Step S4, the data sorting module retrieves the distribution network project information in the database, classifies the data belonging to different distribution network projects respectively, and generates a folder according to the name of the distribution network project under the specified path for drawing;

Step S5, the drawing module of drawing frame and title bar, the drawing module of line topology, the inserting module of explanatory text and dynamic legend, and the partial magnifying module of graph call AutoCAD drawing software to automatically draw the single-line diagram of distribution network;

Step S6, outputting the single-line diagram of the distribution network project, and storing the drawn single-line diagram in a folder corresponding to the project name;

Step S7, repeating steps S5 and S6, to draw the next distribution network project single-line diagram in the database, until all distribution network project single-line diagrams are automatically drawn and finished.

The beneficial effect of the present invention is that the system and method for a complete set of automatic drawing of a single-line diagram of a distribution network with multivariate data fusion proposed by the present invention, compared with the traditional method of drawing a single-line diagram of a distribution network, adopts modularization, Through the standardized graphic element design and intelligent data processing, all the contents of the single-line drawings of the distribution network can be drawn completely and automatically, and the distribution network engineering drawings with clear topology, standardized labels and distinct layers can be generated in a complete set. Strong project implementation necessity and significance. In the example of the present invention, through standardized graphic element design and intelligent data processing, all the contents of the single-line distribution network drawing can be completely drawn, and a complete set of distribution network engineering drawings with clear topology, standardized labeling and distinct layers can be generated, which greatly reduces the manual maintenance work of graphics. It can meet the differentiated design and practical requirements of distribution network engineering.

Description of drawings

Figure 1 is a schematic diagram of the structure and composition of a complete set of automatic drawing system for distribution network single-line diagrams based on multivariate data fusion.

Fig. 2 is the flow chart of the automatic drawing method for the complete set of single-line diagram of distribution network based on multivariate data fusion.

Figure 3 shows the effect of automatic drawing of the single-line diagram of the distribution line.

Detailed ways

The invention is explained in further detail below with reference to the accompanying drawings.

As shown in Figure 1, a complete set of automatic drawing system for distribution network single-line diagram based on multivariate data fusion includes database, data retrieval module, frame and title block drawing module, line topology drawing module, explanatory text and dynamic legend inserting module, and partial enlargement of graphics. Modules, the picture frame and title bar drawing module, the line topology drawing module, the explanatory text and dynamic legend insertion module, and the graph partial enlargement module are respectively connected with the database, and the line topology drawing module and the graph partial enlargement module are connected to each other . Each module (including frame and title block drawing module, line topology drawing module, explanatory text and dynamic legend inserting module, and graphic partial magnification module) invokes AutoCAD drawing software through computer programs, combined with the equipment types and equipment connections obtained from the database. Relevant information such as mode, equipment properties, wire type and so on realizes the automatic drawing and generation of a complete set of single-line diagrams of the distribution network.

The database includes a basic information database and a graphics drawing database, the data retrieval module includes a data sorting module and a data verification module, and the basic information database, the data sorting module and the data verification module are connected to each other.

In this embodiment, the basic information database is used to store and record line topology information such as province and city information, geographic location information, equipment model, time information, connection mode between equipment, equipment attributes, and wire types, etc. The single-line diagram drawing of the network provides the data basis; the graphic drawing database is used to graphically and symbolically express the information of the power equipment primitives, picture frames, legends, picture frames and title blocks required in the distribution network, and assist in the realization of the circuit diagram. Meta, legend, frame and title blocks are drawn automatically.

In this embodiment, the data sorting module classifies the data information of different distribution network projects in the basic information database by retrieving the database line geographic location information, station area information, and time information, so as to assist in the realization of different distribution network projects. Batch generation of engineering drawings; the data verification module is used to determine whether there are isolated or incorrectly connected devices in the basic information database, and to realize data logic verification.

In this embodiment, the graphic drawing database includes a graphic element design library, a dynamic legend library, a graphic frame and a title bar database, which are used to assist in the automatic drawing of line graphic elements, legends, graphic frames and title bars.

The primitive design library is used to graphically and symbolically express the power equipment required in the distribution network. By storing the primitive size information of the relevant content, it is used to realize the modular generation of primitive graphics and ensure the design of primitive graphics. Consistency, normative.

The dynamic legend library obtains the name and type of the existing equipment in the drawing by querying the graphic element design library, and obtains the information of the size of the graphic element and the text length of the graphic element description. Include all equipment that appears in the drawing.

The frame and title block database is used to store the frame size data, drawing scale, map information and title block information that conform to national standards; the title information includes the name of the line or station area to which the drawing content belongs, project name, design, Approval and verification qualification personnel signature information, drawing generation date description, drawing filing number, QR code, etc., are used to automatically generate the drawing frame and title block information required by the national standard.

In this embodiment, the line topology drawing module includes a graphic element connection drawing module and a labeling module; the graphic element connection drawing module reads the graphic element information in the database, and calculates the graphic element GPS conversion coordinates and graphic element insertion for automatic drawing. The angle of placement of points and primitives is automatically drawn into a map according to the drawing scale and database wire type and laying type; the labeling module includes equipment labeling and line labeling, and the distance between the wire and the equipment is obtained according to the requirements of the national standard for all font heights in the drawings. and deflection angle, combined with the length of the labeling string, calculate the minimum width factor that meets the labeling requirements, and realize the automatic labeling of equipment and lines.

More specifically, the calculation methods for the GPS conversion coordinates of the primitives, the insertion point of primitives, and the placement angle of primitives are as follows:

Step A1, retrieve the database to obtain the GPS coordinates of each device under the same power distribution network project and store them in an array, and calculate that the center point of the GPS coordinates of the array corresponds to the relative coordinate center point of the graph drawable area;

Step A2: Make the difference between the coordinates of each device in the array and the coordinates of the GPS center point, and obtain the distance between the device and the relative center point through the unit longitude and latitude corresponding to the AutoCAD millimeter coordinate value and the drawing scale, so as to obtain the relative coordinate center point as the coordinate origin. Device coordinates, the coordinate value is the drawing insertion point of the device, as follows:

Coordinate[node][0]=(nodeGPS[0]-StartGPS[0])*longitudeLength/drawScale

Coordinate[node][1]=(nodeGPS[1]-StartGPS[1])*latitudeLength/drawScale

Among them: Coordinate[node][0] represents the abscissa value of the AutoCAD insertion point of the ith device; Coordinate[node][1] represents the ordinate value of the AutoCAD insertion point of the ith device; nodeGPS[0] represents the ith device The longitude coordinate value of the device; nodeGPS[1] represents the latitude coordinate value of the i-th device; StartGPS[0] represents the longitude coordinate value of the GPS coordinate center point; StartGPS[1] represents the latitude coordinate value of the GPS coordinate center point; longitudeLength represents a longitude The AutoCAD millimeter coordinate value corresponding to the difference; latitudeLength represents the AutoCAD millimeter coordinate value corresponding to a latitude difference; drawScale represents the drawing scale;

Step A3: Calculate the insertion and placement angle of the graphic element. Since the database contains not only the main line data but also the branch line data, all angles related to the graphic element device in the database are inquired and stored in a temporary array, and the data is repeated in the order from small to large. Arrange and calculate the difference between each angle, and calculate the maximum angle difference;

Step A4: Calculate the angle corresponding to the angle bisector when the maximum angle difference is the maximum angle difference, and the angle is the placement angle of the primitives.

In this embodiment, the drawing frame and title block drawing module can automatically draw the drawing frame and the title block by calling the size of the drawing frame, the drawing scale, the map and the title block information in the drawing frame and the title block database, At the same time, it is automatically inserted after the database map is intercepted in combination with the frame size. The line topology drawing module is used to realize the automatic drawing and labeling of drawing equipment and lines by reading information such as drawing scale, equipment type, wire type, and laying type in the database.

The labeling includes equipment labeling and line labeling. According to the requirements of the height of all fonts in the drawings specified by the national standard, the distance and deflection angle between the wire and the equipment are obtained, and the minimum width factor that meets the labeling requirements is calculated in combination with the length of the labeling string to realize automatic labeling of equipment and lines. .

In this embodiment, the explanatory text and dynamic legend insertion module is used to realize the self-adaptive automatic drawing of drawing description content and legend description by reading the graphic element size information and explanatory text information in the database; the graphic local enlargement module By selecting the areas in the drawings with low recognizability and overlapping graphic fonts, calling the line topology drawing module to realize the enlargement and redrawing of the designated area, and automatically generate local area graphics with high recognizability and high definition.

In this embodiment, the explanatory text and dynamic legend insertion module includes an explanatory text insertion module and a dynamic legend insertion module; the explanatory text insertion module reads the explanatory text content in the database, and calculates the corresponding each character by identifying the ASCII value of each character. The width of the line description text insertion, and then determine the size of each character and the line break position by retrieving the blank area of the map frame, so as to realize the adaptive automatic drawing of the drawing description content such as line model summary and line length; the dynamic legend insertion module queries the dynamic legend database by querying the dynamic legend database. The maximum basic size of the graphic element and the maximum length information of the graphic element description text are converted into the required row height and column width length in the legend drawing, and are automatically drawn to form the drawing legend description that meets the engineering acceptance requirements.

In this embodiment, the graphic partial amplifying module is used to realize the selection, enlargement and redrawing of the designated area in the single-line drawing of the distribution network, select the area in the drawing with low recognizability and overlapping graphics and fonts, use graphics, etc. The effect principle is to redefine the drawing center and then zoom in and draw, and automatically generate local area graphics with high recognition and high definition.

The steps of using the equivalence principle to enlarge and draw a graph are as follows:

(1) In the selected area of the drawing, the original insertion and drawing center point of the original element is equivalent to the center point of the selected interception area, and the scale of the drawing is temporarily changed;

(2) Retrieve the database, extract the line information and retrieve all the line coordinates in the area connected to the outside world, and call the relevant modules to redraw the lines, graphics elements, annotations and other related content in the area.

In addition, as shown in FIG. 2 , the method for automatically drawing a single-line diagram of a distribution network for multivariate data fusion proposed by the present invention includes the following steps:

Step S1, database entry: enter information such as distribution lines and equipment geographic location coordinates, connection topology and other information into the database;

Step S2, data logic verification: search through the data verification module whether there is isolated or incorrectly connected device data in the database, if there is, go to step S3, if not, go to step S4 directly;

Step S3: Prompt the user whether to continue generating the single-line diagram of the distribution network. If the drawing is continued, the system will automatically delete the error information in the database. line and re-execute step S1;

Step S4, the data sorting module retrieves the distribution network project information in the database, classifies the data belonging to different distribution network projects respectively, and generates a folder according to the name of the distribution network project under the specified path for drawing;

Step S5, the drawing module for drawing frame and title bar, the drawing module for line topology, the inserting module for explanatory text and dynamic legend, and the module for enlarging part of the graph call AutoCAD drawing software to automatically draw the single-line diagram of the distribution network; Step S6, output the single-line diagram of the distribution network project Drawing, save the drawn one-line diagram in the folder corresponding to the project name;

Step S7, repeating steps S5 and S6, to draw the next distribution network project single-line diagram in the database, until all distribution network project single-line diagrams are automatically drawn and finished.

In the present invention, the steps of judging whether there is isolation and connection error equipment in the database are as follows:

Step S21, query whether the device has a connection device, and if there is no connection device, query whether there is a device connected to it in the database, if not, the device is an isolated device, otherwise the device is not isolated;

Step S22, query whether the name of the station area and the information of the province and city of the connected equipment are consistent with the initial selection equipment, if not, it means that the connection information of the node is wrong, then query whether the equipment in the station area has the equipment connected to it, if not. , then delete the information of the connected equipment in the non-station area and the node is an isolated node;

Step S23, when an isolated node or a non-station area connection device appears in the query, prompt the user whether to continue to generate a single-line diagram of the distribution network, if so, automatically delete the isolated node or delete the connection information; if not, generate an error report and inform the user Problems in the database can quickly locate the wrong data row.

In order to verify the effectiveness of the system and method for automatic drawing of a single-line diagram of a distribution network based on multivariate data fusion, the following will take the low-voltage power distribution line of a company in Jiangxi as an example to illustrate the automatic drawing of the single-line diagram of the present invention. The results are explained.

Figure 3 shows the drawing effect after the single-line diagram of the distribution line is automatically drawn into a complete set. In this embodiment, the engineering data is retrieved and classified by the data sorting module, and the single-line diagram of the distribution network project is automatically drawn and generated. graphics.

The system and method for a complete set of automatic drawing of a single-line diagram of a distribution network with multivariate data fusion proposed in this embodiment adopts the concept of modularization, systematization and parameterization. It can completely and automatically draw all the contents of the single-line drawing of the distribution network, and generate a complete set of distribution network engineering drawings with clear topology, standardized labeling and distinct layers. The amount of manual maintenance of the graphics is small, and the distribution network design and operation personnel can directly use it to meet the differentiated design and practical requirements of distribution network engineering.

The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, and within the scope of knowledge possessed by those of ordinary skill in the art, various kind of change.

Claims (10)

1. A complete automatic drawing system of a distribution network single line diagram fused with multi-metadata is characterized by comprising a database, a data retrieval module, a drawing module of a picture frame and a title bar, a circuit topology drawing module, an explanatory text and dynamic legend inserting module and a graph local amplifying module; the drawing module of the picture frame and the title bar, the drawing module of the circuit topology, the inserting module of the description text and the dynamic legend and the local amplifying module of the graph are respectively connected with the database, and the drawing module of the circuit topology and the local amplifying module of the graph are mutually connected; the drawing module of the drawing frame and the title bar, the drawing module of the circuit topology, the insertion module of the description text and the dynamic legend and the local graphic amplification module realize the complete automatic drawing of the distribution network single line drawing by calling the AutoCAD drawing software and combining the related information in the database.

2. The multi-data-converged distribution network single-line diagram complete automatic drawing system according to claim 1,

the database is used for integrating topology information and engineering information required by the drawing of the distribution network single line diagram and assisting in realizing the automatic drawing of the distribution network single line diagram drawing;

the data retrieval module is used for verifying the logical tightness of database data, realizing trueness and sorting of distribution network line engineering data and assisting in batch generation of different distribution network engineering drawings;

the drawing module of the drawing frame and the title bar is used for realizing the automatic drawing of the drawing frame and the title bar and the automatic insertion of the map file by calling the size of the drawing frame and the information of the title bar in the database;

the circuit topology drawing module is used for realizing automatic drawing and automatic label generation of drawing equipment and circuits by reading information such as drawing proportion, equipment type, lead model, laying type and the like in a database;

the description text and dynamic legend insertion module is used for realizing the self-adaptive automatic drawing of the description contents and legend legends of the drawings by reading the dimension information of the primitives and the description text information in the database;

the local graphic amplifying module is used for selecting the areas with low recognizability and crossed and overlapped graphic fonts in the drawing, calling the circuit topology drawing module to realize the amplification and redrawing of the designated area and automatically generating the local area graphics with high recognizability and definition.

3. The distribution network single-line diagram complete automatic drawing system based on multi-metadata fusion as claimed in claim 1,

the database comprises a basic information database and a graph drawing database, the data retrieval module comprises a data sorting module and a data verification module, and the basic information database, the data sorting module and the data verification module are connected with each other;

the basic information database is used for storing and recording provincial and city information, geographical position information, equipment models, related time and line topology information among equipment of the distribution lines, and provides a data basis for drawing a distribution network single line diagram;

the graph drawing database comprises a graphic element design library, a dynamic graphic example library, a drawing frame and title bar database and is used for assisting in realizing automatic drawing of the circuit graphic elements, the drawing frame and the title bar;

the data sorting module is used for respectively classifying data information belonging to different power distribution network projects by retrieving geographic position information, distribution area information and time information of a database circuit, and assisting in batch generation of different power distribution network project drawings;

the data checking module is used for checking the tightness of data logic by judging whether the database has isolated and connected error equipment.

4. The system of claim 3, wherein the primitive design library is used for representing power equipment required in the power distribution network graphically and symbolically, and is used for realizing modular generation of primitive graphs by storing primitive size information of related contents, so that consistency and normalization of primitive graph design are ensured.

5. The system of claim 3, wherein the dynamic graph instance library obtains names and types of existing devices in a graph by querying a graph element design library, obtains graph element size and graph element description text length information, is used for automatically generating a graph element legend for describing graph devices and line graph element names, and ensures that the graph element legend covers all devices appearing in the graph.

6. The system according to claim 3, wherein the drawing frame and title bar database is used for storing drawing frame size data, drawing scale, map information and title bar information which meet national standards; the title information comprises the name of the line or the station area to which the drawing content belongs, the project name, the design, the approval, the signature information of the qualification personnel, the drawing generation date description, the drawing record number, the two-dimensional code and the like, and is used for automatically generating the drawing frame and the title bar information required by the national standard.

7. The system of claim 1, wherein the line topology drawing module comprises a primitive linkage drawing module and a labeling module;

the primitive connection drawing module calculates a primitive GPS conversion coordinate, a primitive insertion point and a primitive arrangement angle for automatically drawing a picture by reading primitive information in a database, and automatically draws the picture according to a drawing proportion, a database wire model and a laying type;

the marking module comprises equipment marking and line marking, the distance and the deflection angle between the wire and the equipment are obtained according to the requirement that the heights of all fonts in a national standard specified drawing are consistent, the minimum width factor meeting the marking requirement is calculated by combining the length of a marking character string, and automatic marking of the equipment and the line is realized.

8. The distribution network single-line diagram complete automatic drawing system based on multi-metadata fusion of claim 1, wherein the description text and dynamic legend insertion module comprises a description text insertion module and a dynamic legend insertion module;

the description text insertion module reads description text contents in a database, calculates the insertion width of the description text corresponding to each line by identifying the ASCII value of each character, and determines the description contents of the drawing by searching the blank area of the drawing;

the dynamic legend inserting module is used for converting the maximum basic size of the graphic elements and the maximum length information of the graphic element description texts in the dynamic legend database into the height and the row width required in legend drawing and automatically drawing to form the drawing legend descriptions meeting the project acceptance requirements.

9. The system of claim 7, wherein the calculation method of the primitive GPS conversion coordinate, the primitive insertion point and the primitive placement angle comprises the following steps:

a1, retrieving a database to obtain GPS coordinates of each device under the same power distribution network project and storing the GPS coordinates into an array, and calculating the corresponding coordinates of the GPS coordinate center point of the array as the relative coordinate center point of a drawable area of the graph;

step A2, making a difference between each device coordinate in the array and a GPS center point coordinate, and obtaining the distance between the device and a relative center point through a unit longitude and latitude corresponding to an AutoCAD millimeter coordinate value and a drawing proportion, so as to obtain a device coordinate taking the relative coordinate center point as a coordinate origin, wherein the coordinate value is a drawing insertion point of the device;

step A3, calculating the primitive inserting and placing angles, wherein the database not only contains main line data but also branch line data, all angles related to the primitive equipment in the database are inquired and stored in a temporary array, and the maximum angle difference is calculated by rearranging and calculating the difference between the angles in the order from small to large;

and A4, calculating the angle corresponding to the angular bisector when the maximum angle difference exists, wherein the angle is the placing angle of the graphic primitive.

10. The multi-data fusion distribution network single line diagram complete automatic drawing method of the multi-data fusion distribution network single line diagram complete automatic drawing system adopting the multi-data fusion of claims 1-6, is characterized by comprising the following steps:

step S1, database entry: recording information of distribution lines and equipment geographic position coordinates, connection topology and the like into a database;

step S2, data logical check: searching whether isolated and connection error equipment data exist in the database through a data checking module, if so, executing step S3, and if not, directly executing step S4;

step S3, prompting the user whether to continue generating a distribution network single line diagram drawing, automatically deleting error information in the database if the drawing system continues to draw the diagram, generating an error report if the drawing system does not continue to draw the diagram, informing the user of problems in the database, quickly positioning error data rows and re-executing the step S1;

step S4, the data sorting module retrieves the power distribution project information of the database, classifies the data belonging to different power distribution projects respectively, and generates a folder for drawing according to the power distribution project names under the designated path;

step S5, drawing a picture frame and title bar, drawing a circuit topology, inserting a description text and a dynamic legend into the module, and calling AutoCAD drawing software to automatically draw a single line diagram of the distribution network by a local graphic amplification module;

step S6, outputting a power distribution network project single line diagram drawing, and storing the drawn single line diagram in a folder corresponding to a project name;

and S7, repeating the step S5 and the step S6, and drawing the next power distribution network engineering single line diagram in the database until all the power distribution network engineering single line diagrams are automatically drawn.

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