CN113705019A - Cable laying design system based on digital design process - Google Patents
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Abstract
The invention discloses a cable laying design system based on a digital design process, which belongs to the field of cable laying and comprises a calculation unit, a control unit and a control unit, wherein the calculation unit is used for calculating the total length required by a cable after a bridge profile detail drawing is produced, and outputting the calculated cable path; the device comprises a pipe burying unit, a cable bridge, a cable trench and a pipe burying unit, wherein the sizes of all parts of the cable bridge, the cable trench and the pipe burying unit are output; the system comprises a path selection unit which outputs the optimal path of the cable laying. The design of the bridge, the cable trench and the buried pipe is rapidly and intelligently carried out on the basis of a plane layout diagram; design errors are avoided, a design path is optimized, design quality is guaranteed, and design efficiency is improved.
Description
Technical Field
The invention belongs to the field of cable laying, and relates to a cable laying design system based on a digital design process.
Background
The cable laying is the most complex and tedious link in the electrical design, is the artery and nerve of the safe operation and control of the whole power station, the spatial arrangement of the bridge is complicated, a large amount of cables need to be laid, and the data relation and the model association are very complex. Once the cable is laid, a lot of work is irreversible, and the manual laying adopted in the past will cause a lot of unnecessary losses, and how to carry out the automatic design of laying of quick intelligent cable is the key of cable laying design work.
At present, although some two-dimensional or three-dimensional cable laying software exists, the design workload of the bridge, the cable trench and the buried pipe is huge, how to rapidly and intelligently complete the design work of the bridge and the vertical shaft of the cable trench, intelligently calculate the optimal path, simply, conveniently and rapidly calculate the length and the laying path of the cable, which is the key point for solving the rapid and intelligent cable laying design research work and is the urgent need of the cable laying design work of designers at the present stage.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above problems occurring in the description of the related art, and therefore it is an object of the present invention to provide a cable laying design system based on digital design process, which can rapidly and intelligently design a bridge, a cable trench, and a buried pipe based on a floor plan; fundamentally stops the design error, optimizes the design route, guarantees the design quality, improves the design efficiency, also has effectual guiding significance to the construction unit who is responsible for cable laying simultaneously.
In order to solve the technical problems, the invention adopts the technical scheme that: a cable laying design system based on a digital design process comprises a calculation unit, a storage unit and a control unit, wherein the calculation unit is used for calculating the total length required by a cable after a bridge profile detail drawing is produced, and outputting the calculated cable path;
the device comprises a pipe burying unit, a cable bridge, a cable trench and a pipe burying unit, wherein the sizes of all parts of the cable bridge, the cable trench and the pipe burying unit are output;
the system comprises a path selection unit which outputs the optimal path of the cable laying.
Further, extracting topology data according to the corresponding relation between the CAD graphic element and the intersection topology data, completing topology data base building, rapidly drawing a bridge frame, a cable trench and a buried pipe by utilizing a CAD graphic line segment node segmentation technology, rapidly setting the attributes of the bridge frame, the cable trench and the buried pipe, marking numbers on each node, and facilitating path statistics.
Further, the statistics of the capacity and the type of the bridge, the cable trench and the buried pipe is carried out, and whether the conditions of cable laying are met or not is judged.
Furthermore, bridges between each level of layers in the transformer substation are connected through vertical shafts, a plurality of plane layout drawings are placed in one large drawing, the vertical shafts do not need drawing, the vertical shafts are directly connected through CAD lines to represent the vertical shafts, nodes are automatically divided at the bridge connection positions, and non-repeated numbers are marked.
Furthermore, according to the generation condition of the section detailed diagram of the bridge, the condition of the cable laid by each section of the bridge, the cable trench and the buried pipe is checked, the output of the length statistics and the path report of the cable is determined, and the loss coefficient is increased during the length statistics.
Further, when the optimal path is determined, all paths between two devices are researched, the paths are sorted according to the sequence from the shortest path to the longest path, then the storage quantity of the cable types on the bridge is automatically verified in sequence, when the conditions are not met, the secondary short path is adopted, the storage quantity of the cable types on the bridge is automatically verified again, and the like, only the path meeting the conditions is found, the optimal path is determined, and therefore the length of the laid cable is obtained.
Compared with the prior art, the invention has the following advantages and positive effects.
1. The design of the bridge, the cable trench and the buried pipe is rapidly and intelligently carried out on the basis of a plane layout diagram; intelligently searching for optimal path cable laying based on cable inventory; the automatic generation technology of the detailed profile of the bridge laying condition based on the digital design process and the finished product output of the cable laying length statistical table and the laying path table solve the urgent requirements of the cable laying design work of designers at the present stage, fundamentally stop the design errors, optimize the design path, ensure the design quality, improve the design efficiency and have effective guiding significance for the construction unit in charge of cable laying;
2. the method can be directly applied to multiple links such as transformer substation design, operation and maintenance and the like, the common technical problem that the design length of the cable cannot be simply and quickly calculated in the design work is solved through the implementation of the project, and research results have space for copying and popularization in China;
3. the invention defines the actual requirements of cable laying design of the transformer substation, explores the design technology of quickly and intelligently carrying out bridge frames, cable ducts and buried pipes based on a plane layout, provides technical support for digital design of the transformer substation, obtains innovative research results in the aspect of transformer substation design, and brings considerable economic, social and environmental benefits.
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In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic diagram of the depth-first traversal calculation of the present invention;
fig. 2 is a schematic diagram of the automatic drop node at the shelf connection of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially according to the general scale for convenience of illustration when describing the embodiments of the present invention, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional space dimensions including length, width and depth should be included in the actual manufacturing
Again, it should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
In order to make the objects, technical solutions and advantages of the present invention more apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.
The cable laying software is more in foreign countries, such as PDMS, Bently, and the like. The method is widely used in the power and oil industries, but the method still needs to be locally developed and customized. Related partial functions of cable laying are developed on AutoCAD by companies such as Bochao and Zhongke auxiliary dragon in China, and the main functions comprise bridge drawing and editing, pipe arrangement design, three-dimensional factory software interface, path optimization, automatic layered laying, cable inventory and the like. The REVIT becomes an important three-dimensional digital design platform, and can realize the collaborative design of multiple specialties such as buildings, structures, water machines, heating ventilation, electricity and the like, but at present, most of cable laying software design processes at home and abroad are too complicated, and the workload is large. Based on the transformer substation floor layout drawing, the required cable length and the laying path are simply, conveniently and quickly calculated, and the problem to be solved urgently in the digital design of cable laying becomes
As shown in fig. 1 and 2, a cable laying design system based on a digital design process includes a calculation unit, so that after a bridge profile detail drawing is produced, the total length required by a cable is calculated, and the path of the cable is calculated and then output;
the device comprises a pipe burying unit, a cable bridge, a cable trench and a pipe burying unit, wherein the sizes of all parts of the cable bridge, the cable trench and the pipe burying unit are output;
the system comprises a path selection unit which outputs the optimal path of the cable laying.
The calculation unit is implemented based on a floor plan, which is implemented by means of CAD, and the technical scheme of node segmentation of line segments of a CAD graph is described below.
The plane-crossing database building method has various types and various used data sources, and the CAD engineering drawing is widely used for extracting road network data as a vector diagram. By means of complete extraction of CAD data in a network and secondary CAD development, principal point coordinates and curve line element elements are automatically extracted to construct a network. However, most of the acquired data by the methods are physical topology data of a road network and do not contain logical topology data. Therefore, the CAD plane cross topology database building method based on the clustering algorithm of the density. Under the support of a plane intersection topological data model, a clustering algorithm is utilized to realize CAD plane crossed physical topology and logic topology data database construction according to the corresponding relation between CAD graphic primitives and topological data.
The intersection topological data model is realized by building a database in the database, and is layered according to the physical topology and the logical topology of the topological data model, wherein the first layer is a Segment layer and comprises segments (segments) and Segment nodes (nodes), the Segment layer belongs to the segments, and the attributes of the Segment nodes, such as adjsegmentIDs and NorthAngles, respectively record the nodes connected with the Segment nodes and the geometric azimuth angles of the connected segments;
the CAD plane intersection engineering drawing comprises various graphic elements such as road marking lines, traffic signs, underground pipelines and the like. The primitives are represented by straight Line entities, multi-segment Polyline entities, etc., which reflect the spatial geometry information of the geographic entities. The primitive has the attribute data of start and end point coordinates, length, area, color and the like. The extraction of the topological data depends on the identification and extraction of the pavement markings. Generally, because of different operation habits of drawing workers and different drawing standards, the same primitive has different attribute data, and therefore, the road marking cannot be well identified and extracted by using the attribute data. The geometric characteristics of the road surface marked lines and the mutual position relationship are relatively stable, so the line segments are identified and extracted according to the geometric characteristics of the primitives and the mutual position relationship.
A topological data base building method for plane intersection based on clustering algorithm is characterized in that various road markings are generally managed in a CAD file in a layering mode, but only contain space geometric information of geographic entities, and line types are obtained according to clusters where the lines are located, namely the lines where the lines are located, and the geometric characteristics and the mutual position relation of the lines; and finally, establishing a topology data base, extracting topology data according to the corresponding relation between the CAD graphic primitive and the intersection topology data, and finishing the topology data base establishment.
Therefore, the topological data can be extracted according to the corresponding relation between the CAD graphic element and the intersection topological data, the topological data base building is completed, the CAD graph line segment node segmentation technology is utilized to rapidly draw the bridge frame, the cable trench and the buried pipe, the attributes of the bridge frame, the cable trench and the buried pipe are rapidly set, and each node is marked with a number, so that the path statistics is facilitated. Preferably, the statistics of the capacity and the type of the bridge, the cable trench and the buried pipe is carried out, and whether the cable laying condition is met or not is judged; more preferably, bridges between each level of layers in the substation are connected through vertical shafts, a plurality of plane layout drawings are placed in one large drawing, the vertical shafts do not need drawing, the vertical shafts are directly connected through CAD lines to represent the vertical shafts, nodes are automatically divided at the bridge connection positions, and non-repeated numbers are marked.
For the plane layout drawing, a conventional CAD (computer-aided design) line is used for drawing out a bridge frame and a cable trench path; the properties of the batch arrangement lines, such as a bridge frame, a cable trench or a buried pipe, the number of layers, single-side or double-side, are unified, and the types (power cables D, signal cables K and control cables K) and the number of the cables can be accommodated. The default length is automatically calculated by a system, and the actual length of the bridge frame can be manually input according to the actual situation.
Preferably, according to the generation condition of the bridge profile detailed diagram, the condition of the cable laid by each section of the bridge, the cable trench and the buried pipe is checked, the output of the cable length statistics and the path report is determined, and the loss coefficient is increased during the length statistics.
Preferably, when the optimal path is determined, depth-first traversal is involved, all paths between two devices are researched, the paths are sorted according to the sequence from the shortest path to the longest path, then the storage quantity of the cable types on the bridge is automatically verified in sequence, when the conditions are not met, the storage quantity of the cable types on the bridge is automatically verified again by adopting the secondary short path, and the like, only the paths meeting the conditions are found, the optimal path is determined, and the length of the laid cable is obtained.
Depth-first search (Depth _ FirstSearch) traversal is analogous to, and is a generalization of, the first-root traversal of trees.
Assuming that all the vertices in fig. 1 have not been visited given graph G, the depth-first search may start from a vertex v in the graph, visit the vertex, and then sequentially start from the unvisited adjacent points of v to depth-first traverse the graph until all the vertices in the graph that have paths communicating with v are visited; if there is not a vertex visited yet, another vertex in the graph that has not been visited is selected as the starting point, and the above process is repeated until all vertices in the graph have been visited. This is a recursive process.
The process of depth-first traversal of the graph is as follows.
Assuming that x is the currently visited vertex given graph G, after the visit flag is made for x, an undetected edge (x, y) starting from x is selected. If the vertex y is found to be visited, another undetected edge starting from x is reselected, otherwise if the vertex y is not visited, the undetected edge (x, y) is reached to the y which is not visited, and the y is visited and marked as visited; then, starting from y, the search is performed until all paths from y are searched, that is, all vertices reachable from y are visited, and then the vertex x is traced back, and an undetected edge from x is selected again. The above process is performed until all edges from x have been detected. At this time, if x is not the source point, backtracking to the vertex visited before x; otherwise, all the vertexes which are communicated with the path of the source point (namely all vertexes which can be reached from the source point) in the graph are accessed, if the graph G is a communicated graph, the traversal process is ended, otherwise, one vertex which is not accessed yet is continuously selected as a new source point, and a new search process is carried out.
The path calculation technology obtains all possible paths of laying, the shortest path is not the optimal path, only the shortest path which meets the conditions is the optimal path, and therefore the length of the laid cable is obtained, and the project total objective is to quickly design and correctly obtain the length of the laid cable.
The intelligent cable laying method and system based on the transformer substation floor plan are capable of conducting rapid intelligent design, and calculating the designed length of the cable and the laying path conveniently and rapidly. Fundamentally stops the design error, optimizes the design route, guarantees the design quality, improves the design efficiency, also has effectual guiding significance to the construction unit who is responsible for cable laying simultaneously. Therefore, the project has wide market prospect, the achievements are expected to be widely applied to the cable laying design of the transformer substation, a large number of advanced technologies are used, including CAD graph line segment node segmentation technology, optimal path calculation technology and the like, the research of related technologies further promotes the development of the digital power grid design, the personnel investment and the cost are reduced, and objective economic, social and environmental benefits are brought,
it should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (6)
1. A cable laying design system based on digital design process is characterized in that: the cable bridge comprises a calculating unit, a calculating unit and a control unit, wherein the calculating unit is used for calculating the total length required by a cable after a bridge profile detail drawing is produced, and outputting the calculated cable path;
the device comprises a pipe burying unit, a cable bridge, a cable trench and a pipe burying unit, wherein the sizes of all parts of the cable bridge, the cable trench and the pipe burying unit are output;
the system comprises a path selection unit which outputs the optimal path of the cable laying.
2. A cabling design system based on a digital design process according to claim 1, wherein: and extracting topology data according to the corresponding relation between the CAD graphic element and the intersection topology data, completing topology data library construction, rapidly drawing the bridge, the cable trench and the buried pipe by utilizing a CAD graphic line segment node segmentation technology, rapidly setting the attributes of the bridge, the cable trench and the buried pipe, marking numbers on each node, and facilitating path statistics.
3. A cabling design system based on a digital design process according to claim 2, wherein: and (4) carrying out statistics on the capacity and type of the bridge frame, the cable trench and the buried pipe, and judging whether the cable laying conditions are met.
4. A cabling design system based on a digital design process according to claim 2, wherein: bridges between each level layer in the transformer substation are connected through vertical shafts, a plurality of plane layout drawings are placed in one large drawing, the vertical shafts do not need drawing, the vertical shafts are directly connected through CAD lines to represent the vertical shafts, nodes are automatically divided at the bridge connection positions, and non-repeated numbers are marked.
5. A cabling design system based on a digital design process according to claim 1, wherein: and (3) according to the generation condition of the section detailed diagram of the bridge, checking the condition of the cable laid by each section of the bridge, the cable trench and the buried pipe, determining the output of a cable length statistic and path report, and increasing the loss coefficient during the length statistic.
6. A cabling design system based on a digital design process according to claim 1, wherein: when the optimal path is determined, all paths between two devices are researched, the paths are sorted according to the sequence from the shortest path to the longest path, then the type storage quantity of the cables on the bridge is automatically verified in sequence, when the conditions are not met, the second shortest path is adopted, the type storage quantity of the cables on the bridge is automatically verified again, and the like, only the paths meeting the conditions are found, the optimal path is determined, and the length of the laid cables is obtained.
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