Influence factor modeling method and system based on substation secondary drawing visual editing and digital configuration, medium and electronic equipment

Abstract

The invention belongs to the technical field of transformer substation secondary equipment safety, and particularly relates to an influence factor modeling method and system based on transformer substation secondary drawing visual editing and digital configuration, a medium and electronic equipment, a transformer substation secondary circuit model integration method based on CAD drawing automatic identification is adopted, stock CAD drawings are imported into an integration configuration tool, and the transformer substation secondary circuit model integration method based on CAD drawing automatic identification is established. The integrated configuration tool automatically identifies the type and identification of each object in the CAD drawing, automatically completes the digital modeling process of the transformer substation, and can complete the secondary circuit modeling of the whole substation only through less manual modeling and manual intervention. According to the method and the system, the existing problem of converting the CAD drawing into the secondary circuit model in the transformer substation is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of substation secondary equipment safety, and specifically relates to an influencing factor modeling method, system, medium and electronic equipment based on visual editing and digital configuration of substation secondary drawings. Background Art

[0002] Reliable secondary equipment working safety measures are the basis for the safe implementation of relay protection on-site work. In on-site work, a series of measures are mainly implemented to achieve safe isolation of equipment to be repaired and operating equipment through measures such as depressing plates, disconnecting circuit breakers, opening terminal strips, and disassembling secondary circuits. Specific measures are related to the operation mode, work content, and type of protection device of the primary equipment. Currently, maintenance personnel are required to consult drawings, conduct on-site surveys, and manually fill out work tickets to achieve this. This is time-consuming and labor-intensive, and has a low degree of standardization. With the development of the Henan power grid, the number of substations operated and maintained by various units has increased rapidly, and on-site work faces problems such as large workload, small number of personnel, low degree of digitization, and high safety risks. In terms of the number of substations to be maintained, since 2013, the number of substations with a voltage level of 220 kV and above has nearly doubled, and the corresponding protection inspection and fault elimination work has increased significantly; in terms of protection devices, products of different periods such as non-six-unified, six-unified, and nine-unified are in operation at the same time, smart stations and conventional stations are in operation at the same time, and a new generation of substations are about to be put into operation; the secondary circuits, fixed value parameters, and pressure plate settings of different devices are very different, and the safety pressure of on-site operation and maintenance is high; in terms of working methods, the traditional working mode is still used, and the drawings are manually checked, the site is surveyed, and the secondary safety measures tickets are written. The guardian verifies whether the writing is correct and whether the execution and recovery are in place. The degree of digitization and standardization is low, the workload is large, and the on-site safety control is restricted by the level of staff. All of these have brought huge challenges to the safety control of relay protection on-site work. In recent years, State Grid Corporation has had many cases of protection misoperation caused by unreasonable safety measures control. Therefore, it is urgent to study the visualization technology of secondary equipment safety measures based on artificial intelligence to improve the level of digitization and standardization of on-site safety control.

[0003] AutoCAD ActiveX technology is a relatively mature, convenient and practical technology in AutoCAD secondary development, and has been widely used in actual development. Customization and secondary development of software according to the customer's special purpose can often greatly improve the production efficiency and technical level of the enterprise. Write various user-defined functions and form several LISP, ARX, VLX or ADS files, as well as some DCL files. Create a menu file that meets your requirements. Generally, you can add your own content to the original AutoCAD menu file. Set certain paths through the system dialog box. These operations are installed on other AutoCAD systems after the program is successfully developed. Especially when a large number of installations are required, a lot of tedious work such as file retrieval, content addition and deletion, subdirectory creation, file copying, system settings, etc. is required. If all the above work can be done automatically, the entire secondary development program can be embedded in the system without human intervention, which will greatly improve work efficiency.

[0004] Graphics recognition technology is based on the main features of graphics. Each graphic has its own features, such as the letter A has a point, P has a circle, and the center of Y has an acute angle. Studies on eye movements during graphic recognition show that the line of sight is always focused on the main features of the image, that is, where the curvature of the graphic contour is the largest or the direction of the contour changes suddenly. These places have the largest amount of information. Moreover, the scanning route of the eyes always switches from one feature to another in turn. It can be seen that in the process of graphic recognition, the perceptual mechanism must eliminate the redundant input information and extract the key information.

[0005] With the continuous advancement of the digitalization work of the State Grid Corporation, the digitization of various information modeling of the power system has become a trend in the development of substations. Although some domestic manufacturers have proposed physical fiber optic circuit modeling, this modeling method and concept are only for the fiber optic circuit in the smart substation, and the scope of the modeling concept has not been extended to the entire secondary circuit of the substation. There are problems such as incomplete modeling information and incomplete modeling content, which limits the application of this model to fiber optic circuits. Moreover, the secondary circuits in the substation are all secondary electrical circuits, so the physical fiber optic circuit modeling is not applicable to the secondary electrical circuits and related equipment of the substation. Advanced applications such as the visualization of secondary electrical circuits and secondary safety measures control in substations are limited by CAD secondary electrical circuit drawings, which makes the review and management of secondary electrical circuits extremely inconvenient.

[0006] Therefore, a relatively scientific and complete secondary safety measures control system has been formed, but there is still relatively little research on the automatic generation technology of secondary safety measures that integrate the status of primary and secondary equipment, especially the visual safety measures system combined with the secondary circuit diagram. At present, substations also lack the modeling means of substation secondary electrical circuits and equipment. The visualization tools for secondary safety measures control make the substation secondary electrical circuit information invisible during the safety measures operation process. In many places, safety measures diagrams still need to be drawn manually, which is not only inefficient but also prone to errors. This is not conducive to the intelligent operation of substations and does not conform to the current development concept of substations.

[0007] In the process of digital modeling development, the modeling is mainly for the virtual circuit of the smart station and the physical optical fiber circuit, which is difficult to be universally applied to all types of substations. Then, in the process of secondary safety measures, there is a lack of digital modeling, which makes it difficult to phenomenologically analyze the influencing factors involved in secondary safety measures.

[0008] In the process of developing image recognition algorithms, in the field of power grids, the main focus is on identifying primary lines, secondary pressure plates, and secondary circuit breakers. Researchers used unmanned helicopters equipped with high-definition cameras and infrared thermal imagers to conduct line inspection experiments. In the visible light images taken during the line inspection, physical defects on the towers and conductors can be identified; in the infrared images, the hot spots caused by thermal defects are also more obvious. However, the impact of these identification contents and identification carriers on the process control of secondary safety measures is very limited.

[0009] In terms of digital modeling, although some domestic manufacturers have proposed physical fiber loop modeling, this modeling method and concept are only for fiber loops in smart substations, and the scope of the modeling concept is not extended to the entire secondary safety measures process control of substations. There are problems such as incomplete modeling information and incomplete modeling content, which makes the application of this model limited to fiber loops. Moreover, the secondary safety measures process control in substations are all secondary electrical circuits, so physical fiber loop modeling is not applicable to the secondary electrical circuits of substations. The visualization of secondary safety measures process control in substations is limited by digital modeling, which makes the reference of secondary safety measures process control extremely inconvenient. Therefore, the current substation lacks modeling means for the influencing factors of secondary safety measures in substations and visualization tools for secondary safety measures process control, which makes the secondary safety measures process control information of substations invisible during operation, and there is no effective guidance technology in the secondary safety measures process control process, which is not conducive to the intelligent operation of substations and does not conform to the current development concept of substations. Summary of the invention

[0010] The purpose of the present invention is to provide an influencing factor modeling method, system, medium and electronic equipment based on visual editing and digital configuration of substation secondary drawings to address the problems existing in the prior art. The method and system solve the problem of converting existing CAD drawings into secondary circuit models in substations.

[0011] The technical solution of the present invention is:

[0012] The influencing factor modeling method based on the visual editing and digital configuration of the secondary drawings of the substation includes the following steps: establishing an influencing factor identification element library, formulating the identification influencing factor type, and establishing the standard element of each influencing factor according to the identification influencing factor type;

[0013] Import the existing CAD drawings into the integrated configuration tool, which automatically identifies the type, logo and stamp of the CAD drawings, searches for the corresponding drawing number in the atlas catalog according to the stamp number, and determines the cabinet and device information to which the CAD drawings belong;

[0014] The recognized CAD drawings are scaled to fit the recognition area frame, various influencing factors in the CAD drawings are identified, and the recognition area frame graphics are matched according to the shapes and characteristics of each influencing factor in the influencing factor recognition element library, and the drawings that are consistent with the elements in the influencing factor recognition element library are identified as influencing factors;

[0015] According to the position of the identified influencing factor, the text content near the influencing factor and the information of the cabinet or device to which the drawing belongs are traversed to identify the influencing factor drawing and obtain the attribute information of the influencing factor;

[0016] Pick up various connecting lines in the CAD drawing, and obtain the connecting points of the influencing factors of the connecting lines through the coordinate positions of the beginning and end of the connecting lines;

[0017] Pick up the text box position coordinates and text in the CAD drawing, match them with the position coordinates of the connecting line, so as to obtain the corresponding relationship between the text box and the connecting line, assign the text in the text box to the function description attribute of the connecting line, and improve the function identification of the connecting line;

[0018] Repeat the recognition process of all CAD drawings, integrate the connection information of each influencing factor to form an electrical secondary circuit according to the connection relationship of the drawings, and perform circuit verification based on the connection relationship of the electrical secondary circuit;

[0019] Output a file or XML file describing the substation electrical secondary circuit connection relationship in a standard format according to actual needs.

[0020] Specifically, the attribute information of the influencing factor includes the secondary device to which the influencing factor belongs, the secondary screen cabinet, the influencing factor name and the type of the influencing factor.

[0021] Specifically, the types of CAD drawings include: drawing catalog, secondary schematic diagram, front / back view of screen cabinet, device backplane diagram, component wiring diagram, optical cable connection diagram or optical cable connection table, terminal block diagram.

[0022] Specifically, the types of the identified influencing factors include: coils, contacts, switches, circuit breakers, windings, devices, power supplies, cabinets, terminal boxes, buttons, terminals, contact terminals, pressure plates and indicator lights.

[0023] The system for the influencing factor modeling method based on the visual editing and digital configuration of the secondary drawings of the substation comprises: a drawing catalog recognition module, an identification graphic element library module, an identification influencing factor library definition module, an automatic identification graphic element module, a manual identification graphic element module and an information integration database module; the drawing catalog recognition module is used to recognize the imported stock CAD drawings; the identification graphic element library module is used to scale the recognized CAD drawings to match the recognition area frame, and recognize various influencing factors in the CAD drawings; the identification influencing factor library definition module is used to match the recognition area frame graphics according to the shape and characteristics of each influencing factor in the influencing factor identification graphic element library, and the influencing factor identification graphic element library is used to match the influencing factor identification graphic element library with the influencing factor identification graphic element library. Drawings with consistent graphics elements in the factor identification graphics element library are identified as influencing factors; the automatic graphics element identification module is used to obtain the attribute information of the picked influencing factors, traverse the text content near the influencing factors at the location of the identified influencing factors, and the screen cabinet or device information to which the drawings belong, identify the influencing factor drawings to obtain the attribute information of the influencing factors; the manual graphics element identification module is used to identify various connecting lines in the picked CAD drawings, and manually identify the unidentified connecting line relationships; the information integration database module is used to integrate the connection information of each influencing factor according to the connection relationship of the drawings to form an electrical secondary circuit, and perform circuit verification on the connection relationship of the electrical secondary circuit.

[0024] A computer-readable storage medium stores a computer program, wherein the computer program is used to execute the method described above.

[0025] An electronic device, comprising:

[0026] processor;

[0027] a memory for storing instructions executable by the processor;

[0028] The processor is used to read the executable instructions from the memory and execute the instructions to implement the method described above.

[0029] The beneficial effects of the present invention are: adopting a substation secondary circuit model integration method based on automatic identification of CAD drawings, importing existing CAD drawings into an integrated configuration tool, the integrated configuration tool automatically identifies the type and identification of each object in the CAD drawing, and automatically completes the digital modeling process of the substation, and only requires less manual modeling and manual intervention to complete the secondary circuit modeling of the entire station. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a flowchart of establishing the impact factor model;

[0031] Figure 2 This is the software identification process for establishing a model provided by the present invention. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] Example 1

[0034] like Figure 1 The flowchart of the influencing factor modeling method based on the visual editing and digital configuration of the secondary drawings of the substation provided in this embodiment is shown, which specifically includes the following steps:

[0035] S1. Establish an impact factor identification element library, formulate the identification impact factor type, and establish standard elements for each impact factor based on the identification impact factor type;

[0036] S2. Import the existing CAD drawings into the integrated configuration tool, which automatically identifies the type, logo and stamp of the CAD drawings, searches for the corresponding drawing number in the atlas catalog according to the stamp number, and determines the panel cabinet and device information to which the CAD drawings belong. The types of CAD drawings include: drawing catalog, secondary schematic diagram, panel cabinet front / back view, device backplane diagram, component wiring diagram, optical cable connection diagram or optical cable connection table, and terminal block diagram;

[0037] S3. Scale the identified CAD drawings to match the identification area frame, identify various types of influencing factors in the CAD drawings, match the identification area frame graphics according to the shape and characteristics of each influencing factor in the influencing factor identification primitive library, and identify the drawings consistent with the primitives in the influencing factor identification primitive library as influencing factors, and the attribute information of the influencing factors includes the secondary device to which the influencing factor belongs, the secondary screen cabinet, the influencing factor name and the type of influencing factor;

[0038] S4. According to the position of the identified influencing factor, the text content near the influencing factor and the information of the panel cabinet or device to which the drawing belongs are traversed, and the influencing factor drawing is identified to obtain the attribute information of the influencing factor. The types of the identified influencing factors include: coil, contact, switch, circuit breaker, winding, device, power supply, panel cabinet, terminal box, button, terminal, contact terminal, pressure plate and indicator light;

[0039] S5. Pick up various connecting lines in the CAD drawing, and obtain the connecting points of the influencing factors of the connecting lines through the coordinate positions of the first and last ends of the connecting lines;

[0040] S6. Pick up the text box position coordinates and text in the CAD drawing, match them with the position coordinates of the connecting line, so as to obtain the corresponding relationship between the text box and the connecting line, assign the text in the text box to the function description attribute of the connecting line, and improve the function identification of the connecting line;

[0041] S7. Repeat the recognition process of all CAD drawings, integrate the connection information of each influencing factor to form an electrical secondary circuit according to the connection relationship of the drawings, and perform circuit verification on the connection relationship of the electrical secondary circuit;

[0042] S8. Output a file or XML file describing the connection relationship of the substation electrical secondary circuits in a standard format according to actual needs.

[0043] Example 2

[0044] The present embodiment provides a system for an influencing factor modeling method based on visual editing and digital configuration of secondary drawings of a substation, comprising: a drawing catalog recognition module, an identification graphic element library module, an identification influencing factor library definition module, an automatic identification graphic element module, a manual identification graphic element module and an information integration database module; the drawing catalog recognition module is used to recognize imported stock CAD drawings; the identification graphic element library module is used to scale the recognized CAD drawings to match the recognition area frame, and recognize various influencing factors in the CAD drawings; the identification influencing factor library definition module is used to perform identification area frame graphic matching according to the shape and characteristics of each influencing factor in the influencing factor identification graphic element library, Drawings that are consistent with the graphics in the influencing factor identification graphics library are identified as influencing factors; the automatic graphics element identification module is used to obtain the attribute information of the picked influencing factors, traverse the text content near the influencing factors at the location of the identified influencing factors, and the screen cabinet or device information to which the drawings belong, identify the influencing factor drawings to obtain the attribute information of the influencing factors; the manual graphics element identification module is used to identify various connecting lines in the picked CAD drawings, and manually identify the unidentified connecting line relationships; the information integration database module is used to integrate the connection information of each influencing factor according to the connection relationship of the drawings to form an electrical secondary circuit, and perform circuit verification on the electrical secondary circuit connection relationship.

[0045] Example 3

[0046] This embodiment provides a computer-readable storage medium, wherein the storage medium stores a computer program, and the computer program is used to execute the method described in Embodiment 1.

[0047] Example 4

[0048] This embodiment provides an electronic device, the electronic device comprising:

[0049] processor;

[0050] a memory for storing instructions executable by the processor;

[0051] The processor is used to read the executable instructions from the memory and execute the instructions to implement the method described in the above embodiment 1.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. The influencing factor modeling method based on the visual editing and digital configuration of the substation secondary drawings is characterized by: The steps include: Establish an impact factor identification element library, formulate the identification impact factor types, and establish standard elements for each impact factor based on the identification impact factor types; Import the existing CAD drawings into the integrated configuration tool, which automatically identifies the type, logo and stamp of the CAD drawings, searches for the corresponding drawing number in the atlas catalog according to the stamp number, and determines the cabinet and device information to which the CAD drawings belong; The recognized CAD drawings are scaled to fit the recognition area frame, various influencing factors in the CAD drawings are identified, and the recognition area frame graphics are matched according to the shapes and characteristics of each influencing factor in the influencing factor recognition element library, and the drawings that are consistent with the elements in the influencing factor recognition element library are identified as influencing factors; According to the position of the identified influencing factor, the text content near the influencing factor and the information of the cabinet or device to which the drawing belongs are traversed to identify the influencing factor drawing and obtain the attribute information of the influencing factor; Pick up various connecting lines in the CAD drawing, and obtain the connecting points of the influencing factors of the connecting lines through the coordinate positions of the beginning and end of the connecting lines; Pick up the text box position coordinates and text in the CAD drawing, match them with the position coordinates of the connecting line, so as to obtain the corresponding relationship between the text box and the connecting line, assign the text in the text box to the function description attribute of the connecting line, and improve the function identification of the connecting line; Repeat the recognition process of all CAD drawings, integrate the connection information of each influencing factor to form an electrical secondary circuit according to the connection relationship of the drawings, and perform circuit verification based on the connection relationship of the electrical secondary circuit; Output a file or XML file describing the substation electrical secondary circuit connection relationship in a standard format according to actual needs.

2. According to claim 1, the influencing factor modeling method based on visual editing and digital configuration of substation secondary drawings is characterized in that: The attribute information of the influencing factor includes the secondary device to which the influencing factor belongs, the secondary panel cabinet, the influencing factor name and the type of the influencing factor.

3. According to claim 1, the influencing factor modeling method based on visual editing and digital configuration of substation secondary drawings is characterized in that: The types of CAD drawings include: drawing catalog, secondary schematic diagram, front / back view of panel cabinet, device back panel diagram, component wiring diagram, optical cable connection diagram or optical cable connection table, and terminal block diagram.

4. According to claim 1, the influencing factor modeling method based on visual editing and digital configuration of substation secondary drawings is characterized in that: The types of the identification influencing factors include: coils, contacts, switches, circuit breakers, windings, devices, power supplies, cabinets, terminal boxes, buttons, terminals, contact terminals, pressure plates and indicator lights.

5. A system for modeling an influencing factor based on visual editing and digital configuration of secondary drawings of a substation, characterized in that: include: Drawing catalog recognition module, graphic element library recognition module, influencing factor library definition module, automatic graphic element recognition module, manual graphic element recognition module and information integration database module; The drawing catalog recognition module is used to recognize the imported stock CAD drawings; The identification element library module is used to scale the identified CAD drawing to fit the identification area frame, and to identify various influencing factors in the CAD drawing. The identification impact factor library definition module is used to perform identification area frame graphic matching according to the shape and characteristics of each impact factor in the impact factor identification graphic element library, and identify the drawings that are consistent with the graphic elements in the impact factor identification graphic element library as impact factors; The automatic primitive recognition module is used to obtain the attribute information of the picked-up influencing factor, traverse the text content near the influencing factor and the cabinet or device information to which the drawing belongs for the position of the identified influencing factor, identify the influencing factor drawing and obtain the attribute information of the influencing factor; The manual primitive recognition module is used to recognize various connection lines in the unrecognized CAD drawings and to manually recognize the relationship between the unrecognized connection lines; The information integration database module is used to integrate the connection information of each influencing factor according to the connection relationship of the drawing to form an electrical secondary circuit, and to perform circuit verification based on the connection relationship of the electrical secondary circuit.

6. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and the computer program is used to execute the method according to any one of claims 1 to 4 above.

7. An electronic device, characterized in that: The electronic device comprises: A processor; a memory for storing instructions executable by the processor; The processor is used to read the executable instructions from the memory and execute the instructions to implement the method described in any one of claims 1 to 4 above.

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