CN114067036A - Automatic drawing method for power distribution network diagram based on three-dimensional visualization - Google Patents
Automatic drawing method for power distribution network diagram based on three-dimensional visualization Download PDFInfo
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Abstract
The invention discloses a three-dimensional visualization-based automatic drawing method for a power distribution network diagram, which is characterized in that power distribution node information is obtained according to an original topology network of a power distribution network, and the hierarchical structure relationship between a target power distribution area and the power distribution network is determined; according to the urban information model and the geographic information system, a three-dimensional model map and geographic environment information of a target power distribution area are obtained, and then the information of an overhead line area, a cable line area and a power distribution line is determined in the target power distribution area by combining with the construction specification of the power distribution line. And automatically drawing in the three-dimensional model diagram corresponding to the target power distribution area according to the hierarchical structure relationship of the power distribution network and the information of the power distribution line to obtain the three-dimensional power distribution line diagram. The three-dimensional distribution line diagram can reduce the preparation workload of the engineering personnel in the early stage of drawing, and provides a reference suggestion for the engineering personnel to draw a new distribution network diagram; the method provides a relatively real and reliable function environment information for the line inspection and equipment maintenance personnel, and improves the working efficiency and the working quality.
Description
Technical Field
The invention relates to the technical field of power distribution networks, in particular to an automatic drawing method of a power distribution network diagram based on three-dimensional visualization.
Background
With the rapid development of urban industry and housing industry, the power consumption demand is continuously increased, the scale of a power system is continuously enlarged, and the line planning diagram of a power distribution network is more and more complex. At present, most of distribution network diagrams are drawn by hand by means of drawing software. When the load of the distribution network increases, substations should also be added to the distribution network as appropriate, adding distribution lines to extend the capacity of the distribution network. And a great deal of preparation work is needed for engineering personnel to draw a qualified new distribution network diagram, such as the investigation of actual environmental conditions, the selection of the position of a newly-built distribution station, the re-planning of a distribution line and the like. The actual power distribution network has numerous nodes, complex structure and various parameters, and the power grid connection diagram is drawn manually by manpower, so that the workload is high and the efficiency is low.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an automatic drawing method of a power distribution network diagram based on three-dimensional visualization, which can obtain the relation between power distribution node information and a power distribution network hierarchical structure according to an original topology network of a power distribution network, automatically draw by combining a three-dimensional model diagram to obtain a three-dimensional power distribution line diagram, reduce the preparation workload of engineering personnel in the early stage of drawing, provide reference suggestions for the engineering personnel to draw a new power distribution network diagram based on a three-dimensional scene, and improve the drawing efficiency; meanwhile, the method reduces and improves the requirement of providing relatively real and reliable functional environment information for line inspection and equipment maintenance personnel, and improves the working efficiency of the inspection maintenance personnel.
According to the embodiment of the first aspect of the invention, the method for automatically drawing the power distribution network diagram based on the three-dimensional visualization comprises the following steps:
acquiring an original topology network of the power distribution network;
acquiring power distribution node information according to the original topology network of the power distribution network;
determining a hierarchical structure relationship between a target power distribution area and a power distribution network according to the power distribution node information;
obtaining a three-dimensional model diagram and geographic environment information of the target power distribution area according to a city information model and a geographic information system;
determining an overhead line area and a cable line area in the target power distribution area according to the power distribution node information, the geographic environment information and the power distribution line construction specification;
determining distribution line information in the overhead line area and the cable line area according to the distribution node information and distribution line construction specifications;
and drawing according to the hierarchical structure relationship of the power distribution network, the distribution line information and the three-dimensional model diagram corresponding to the target power distribution area to obtain a three-dimensional distribution line diagram, wherein the three-dimensional distribution line diagram is used for providing decision suggestions for users.
The automatic drawing method of the power distribution network diagram based on three-dimensional visualization, provided by the embodiment of the invention, at least has the following beneficial effects:
the method can obtain the power distribution node information according to the original topology network of the power distribution network, and further determine the hierarchical structure relationship between a target power distribution area and the power distribution network; and according to the urban information model and the geographic information system, obtaining a three-dimensional model map and geographic environment information of the target power distribution area, and determining an overhead line area and a cable line area in the target power distribution area by combining with the construction specification of the distribution line. Further, distribution line information is determined in the overhead line area and the cable line area according to distribution line construction specifications. And finally, automatically drawing the three-dimensional model diagram corresponding to the target power distribution area according to the hierarchical structure relationship of the power distribution network and the information of the power distribution line to obtain the three-dimensional power distribution line diagram.
And geographic characteristics of the power distribution nodes and the power distribution facilities can be obtained based on the three-dimensional image model. In the upgrading planning of the power distribution network, an engineer can intuitively obtain the trend, the span, the pole tower and the position of a transformer substation of a line through a three-dimensional power distribution line diagram, the terrain where the line passes is equal to information closely related to geographic elements, the preparation workload of the engineer in the early stage of drawing is reduced, and a reference suggestion is provided for the engineer to draw a new power distribution network diagram based on a three-dimensional scene. The method provides a relatively real and reliable function environment information for the line inspection and equipment maintenance personnel, and improves the work efficiency and the work quality of the inspection maintenance personnel.
According to some embodiments of the invention, the determining a target power distribution area and power distribution network hierarchy relationship from the power distribution node information comprises:
acquiring the voltage grade and the geographical position information of the power distribution node according to the power distribution node information;
dividing the transformer substation nodes into a high-voltage distribution node set, a medium-voltage distribution node set and a low-voltage distribution node set according to the voltage grade and the distribution specification information of the distribution nodes;
determining a high-voltage distribution area, a medium-voltage distribution area and a low-voltage distribution area according to the high-voltage distribution node set, the medium-voltage distribution node set, the low-voltage distribution node set and the geographic position information;
determining the target power distribution area according to the high voltage power distribution area, the medium voltage power distribution area and the low voltage power distribution area;
and obtaining the network hierarchical structure relationship among the high-voltage distribution area, the medium-voltage distribution area and the low-voltage distribution area in the target distribution area according to the distribution node information.
According to some embodiments of the invention, the determining an overhead line area and a cable line area within the target power distribution area according to the power distribution node information, the geographical environment information, and power distribution line construction specifications comprises:
obtaining building density and load density of the high-voltage distribution area, the medium-voltage distribution area and the low-voltage distribution area in the target distribution area according to the geographic environment information;
determining an area where the building density is less than a building density threshold and the load density is less than a load density threshold as the overhead line area;
determining an area within the target power distribution area other than the overhead line area as the cable line area.
According to some embodiments of the invention, the determining distribution line information within the overhead line area and the cable line area according to the distribution node information and distribution line construction specifications comprises:
determining a power distribution station head node and a power distribution station tail node in the overhead line area;
acquiring topographic and geomorphic parameters in the overhead line area;
determining the address information of the overhead tower according to the landform parameters;
acquiring an overhead line path set according to the overhead tower site selection information, the landform parameters and an overhead line layout principle;
acquiring a first load estimation value of each power distribution node in the overhead line area according to the power distribution node information;
determining a first distribution line attribute according to the first load estimation value and a distribution line construction standard;
and obtaining first distribution line information of the overhead line area according to the overhead line path set and the first distribution line attribute.
According to some embodiments of the present invention, the obtaining an overhead line path set according to the overhead tower addressing information, the topographic parameters, and the overhead line layout rules includes:
marking the power distribution station head node and the power distribution station tail node in the three-dimensional image data corresponding to the overhead line area;
acquiring the power distribution station head node, the power distribution station tail node and the overhead pole tower node determined by the overhead pole tower address information;
according to the landform parameters and the overhead line layout principle, carrying out road section testing processing on the power distribution station head node, the power distribution station tail node and the overhead pole tower node to obtain candidate road sections;
according to the candidate road sections, determining a first path set taking the first node of the power distribution station as a starting point, a second path set taking the last node of the power distribution station as a starting point and a third path set taking the node of the overhead mast tower as a starting point;
and combining and deleting candidate road sections in the first path set, the second path set and the third path set in sequence to obtain the overhead line path sets of all the routes between the first node of the power distribution station and the last node of the power distribution station.
According to some embodiments of the present invention, the performing, according to the topographic parameters and the overhead line layout principle, a road segment test process on the distribution substation head node, the distribution substation end node, and the overhead pole tower node to obtain a candidate road segment includes:
collecting the power distribution station head node, the power distribution station tail node and the overhead tower node into a connecting node set;
selecting a first connecting node according to the connecting node set, connecting the first connecting node with a second connecting node by taking the first connecting node as a starting point to obtain a test road section, and calculating a first distance of the test road section, wherein the second connecting node is other nodes of the connecting node set except the first connecting node;
according to the overhead line layout principle, performing three-dimensional collision detection on the test road section in the overhead line area, and obtaining a first collision path and a first communication path according to a three-dimensional collision detection result;
and determining a candidate line of the first connecting node from the first connecting path according to a shortest path principle, the topographic parameters and the first distance.
According to some embodiments of the invention, the determining distribution line information within the overhead line region and the cable line region according to the distribution node information and distribution line construction specifications further comprises:
acquiring topographic and geomorphic parameters in the cable line area;
determining a cable incoming line position point, a cable incoming line position point and a second load estimation value in the cable line area according to the landform parameters and the power distribution node information;
obtaining a cable line test path according to the cable incoming position point, the landform parameters and a cable line layout principle;
performing three-dimensional collision detection on the cable line test path in the cable line area, and obtaining a second communication path and a second collision path according to a three-dimensional collision detection result;
and determining second distribution line information of the cable line area according to the second load estimation value, the distribution line construction specification and the second communication path.
According to some embodiments of the present invention, the automatically drawing the three-dimensional model map corresponding to the distribution network hierarchical structure relationship and the distribution line information in the target distribution area to obtain a three-dimensional distribution line map includes:
carrying out model building and model connection in the target power distribution area according to the distribution line information to respectively obtain an overhead line corridor three-dimensional model diagram and a cable channel three-dimensional model diagram;
and connecting the three-dimensional model diagram of the overhead line corridor and the three-dimensional model diagram of the cable channel according to the hierarchical structure relationship of the power distribution network to obtain a complete three-dimensional power distribution line diagram.
In a second aspect, an embodiment of the present invention further provides a server, including: the computer program is stored on the memory and can be run on the processor, and the processor executes the computer program to implement the method for automatically drawing the power distribution grid diagram based on three-dimensional visualization according to any one of the embodiments of the first aspect.
In a third aspect, an embodiment of the present invention further provides a computer-readable storage medium, which stores computer-executable instructions, where the computer may execute the method for automatically drawing the power distribution grid diagram based on three-dimensional visualization according to any one of the embodiments of the first aspect.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic flow chart of an automatic drawing method for a power distribution network diagram based on three-dimensional visualization according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of an automated drawing method for a power distribution network diagram based on three-dimensional visualization according to another embodiment of the present invention;
fig. 3 is a schematic flow chart of an automated drawing method for a power distribution network diagram based on three-dimensional visualization according to another embodiment of the present invention;
fig. 4 is a schematic flow chart of an automated drawing method for a power distribution network diagram based on three-dimensional visualization according to another embodiment of the present invention;
fig. 5 is a server according to an embodiment of the present invention.
Reference numerals: server 40, processor 41, memory 42.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly defined, terms such as arrangement, connection and the like should be broadly construed, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the detailed contents of the technical solutions.
The embodiments of the present invention will be further explained with reference to the drawings.
The engineering project needs data construction. In the early stage of engineering project, a spatial database and a model database should be established according to engineering requirements. The spatial database is used for managing and maintaining basic geographic data and thematic data in a project range, and the managed data comprises: high-definition image data, digital elevation models and other basic geographic data, and various special data of engineering roads such as rivers, power lines, traffic roads, natural protection areas, municipal planning and the like. The engineering power grid equipment model library has relevant models: the system comprises a general engineering straight line tower model, a general engineering corner tower model, an insulator model, a construction equipment model, tower positioning parameters, a transformer substation model and the like. The spatial database and the model database are general, and how to establish the engineering power grid equipment model database is not described herein. Engineering personnel can obtain required data from the spatial database and the model database or build a model by the model, so that the working efficiency is improved.
Referring to fig. 1, fig. 1 is a schematic flow chart of an automatic power distribution network diagram drawing method based on three-dimensional visualization, which includes the steps of:
and S100, acquiring an original topology network of the power distribution network.
The power distribution network comprises a power grid equipment layer and a topological relation layer. The original topological graph of the power distribution network is obtained, and the topological information about the power distribution network can be conveniently and quickly obtained. The original topology network of the power distribution network can be obtained from a database in which the power distribution network is stored, and can also be established by combining a three-dimensional modeling technology with a real-time image obtained by an unmanned aerial vehicle.
And step S110, acquiring power distribution node information according to the original topology network of the power distribution network.
Specifically, the power distribution node information includes: device information, geographic location, two-dimensional coordinates, ambient environment information, and the like. Abundant information can be conveniently and quickly obtained through a historical power distribution network. It is understood that the power distribution node information may further include: device attributes, superior and inferior devices, connection line attributes, and the like.
And step S120, determining the hierarchical structure relationship between the target power distribution area and the power distribution network according to the power distribution node information.
Specifically, the voltage level and the geographical position information of the power distribution node are obtained according to the power distribution node information. The voltage grade is acquired, the subsequent classification of the power distribution nodes is facilitated, the geographical position information is acquired, the range of each voltage power distribution area is determined, power distribution configuration is performed in different power distribution areas according to different standards, and the working efficiency is improved.
Further, according to the voltage level of the power distribution node and the power distribution specification information, the transformer substation node is divided into a high-voltage power distribution node set, a medium-voltage power distribution node set and a low-voltage power distribution node set. Dividing power distribution nodes with the voltage class of 35kV or above into high-voltage power distribution nodes according to the power distribution specification information; dividing the power distribution nodes with the voltage level below 380V into low-voltage power distribution nodes; distribution nodes not within these two voltage ranges are divided into medium voltage distribution nodes. It will be appreciated that the criteria for dividing the distribution nodes by voltage class is not exclusive and can be adjusted by the engineer based on the circumstances.
And further, determining a high-voltage power distribution area, a medium-voltage power distribution area and a low-voltage power distribution area according to the high-voltage power distribution node set, the medium-voltage power distribution node set, the low-voltage power distribution node set and the geographical position information. Low voltage distribution networks typically employ a voltage of 220/380V for supplying power to consumers. Medium voltage distribution networks generally use 10kV voltage and only have a distribution function, and medium voltage cables directly supply power to a network substation as a low voltage network power supply or directly supply power to a user substation. High voltage distribution networks typically employ 110kV voltages.
Further, a target power distribution area is determined based on the high voltage power distribution area, the medium voltage power distribution area, and the low voltage power distribution area. The power grids with different voltage grades have different construction requirements, and the different voltage grades of the power grids also influence the type selection of the cables, the laying mode of the cables and the like. And a target power distribution area with clear area division is obtained, so that the engineering personnel can selectively inspect and maintain a certain power distribution area or perform drawing to re-plan the area power distribution line.
And further, obtaining the network hierarchical structure relationship among a high-voltage distribution area, a medium-voltage distribution area and a low-voltage distribution area in the target distribution area according to the distribution node information. The distribution network comprises high voltage distribution network, medium voltage distribution network and low voltage distribution network, has certain network hierarchy relation between the three, for example: supply relationships between the medium voltage distribution area and the low voltage distribution network, supply relationships between the high voltage distribution area and the low voltage distribution network, and the like. The sub-networks in the power distribution network are hierarchically divided according to the voltage levels, so that engineering personnel can conveniently and quickly master the power distribution condition of the area, the field inspection and engineering drawing preparation workload is reduced, and the working efficiency is improved.
And step S130, obtaining a three-dimensional model map and geographic environment information of the target power distribution area according to the city information model and the geographic information system.
The application of the urban information model and the geographic information system is mature, and the three-dimensional model map and the geographic environment information of the target power distribution area can be obtained conveniently and quickly based on the urban information model and the geographic information system.
And step S140, determining an overhead line area and a cable line area in the target power distribution area according to the power distribution node information, the geographic environment information and the power distribution line construction specification.
Specifically, the building density and the load density of a high-voltage power distribution area, a medium-voltage power distribution area, and a low-voltage power distribution area in a target power distribution area are obtained from the geographical environment information. It is understood that the geographic context information includes: building density, load density, two-dimensional coordinates of power distribution nodes, and the like. In the application, the building density and the load density are adopted as conditions for selecting a power grid erection mode. It can be understood that the building density and the load density are only important area division conditions, and actually, the area division conditions affecting the selection of the power grid erection mode also include: grid capacity to load ratio, grid capacity and grid maximum load, etc. The target power distribution area is divided according to the geographic environment information, so that engineering personnel can select different construction methods for different areas to provide reliable suggestions.
Further, according to the building density threshold value and the load density threshold value, the area where the building density is smaller than the building density threshold value and the load density is smaller than the load density threshold value is determined as the overhead line area.
According to the construction specification information of the power distribution network, the overhead line region should avoid a current situation development area, a public rest land, an area where the environment is easily damaged or an area where the landscape is seriously affected as far as possible. The construction method is characterized in that overhead construction is adopted in some areas which are open and have low building density.
Further, an area within the target power distribution area other than the overhead line area is determined as a cable line area.
In actual construction, the cable has strong power supply capacity, safety and stability and higher cost; the method is generally used in cities or industrial areas with dense buildings and high load density, coastal areas which are easily attacked by typhoons, economic development areas with higher requirements on power supply reliability and some scenic tourism areas.
The overhead line and the cable line are two different power grid erection modes, and the construction standards are different greatly. The target power distribution area is divided according to different power grid erection modes, and in the actual construction or inspection process, the method is favorable for pre-estimating the area to be constructed or inspected by engineering personnel and the subsequent field work.
And S150, determining distribution line information in the overhead line area and the cable line area according to the distribution node information and the distribution line construction standard.
It is understood that the distribution line information includes first distribution line information within the overhead line area and second distribution line information within the cable line area. According to distribution lines information, the efficiency of automatic drawing can be improved. The distribution lines information in different areas can be obtained by engineering personnel, and then the distribution network is re-planned or manual drawing is carried out by referring to the distribution lines information, so that the working efficiency is improved.
And step S160, automatically drawing according to the hierarchical structure relationship of the power distribution network, the information of the power distribution line and the three-dimensional model diagram corresponding to the target power distribution area to obtain a three-dimensional power distribution line diagram, wherein the three-dimensional power distribution line diagram is used for providing decision suggestions for users.
Specifically, model building and model connection are carried out in a target power distribution area according to the distribution line information, and an overhead line corridor three-dimensional model diagram and a cable channel three-dimensional model diagram are obtained respectively. And selecting a substation model, a tower model, a wire model and the like from the power grid equipment model library according to the distribution line information. The distribution line information includes first distribution line information and second distribution line information. Carrying out model building and model connection in the overhead line area according to the first distribution line information to obtain an overhead line corridor three-dimensional model diagram; and performing model building and model connection in the cable line area according to the second distribution line information to obtain a cable channel three-dimensional model diagram.
And further, connecting the three-dimensional model diagram of the overhead line corridor and the three-dimensional model diagram of the cable channel according to the hierarchical structure relationship of the power distribution network to obtain a complete three-dimensional power distribution line diagram.
The engineering personnel can obtain trend, span, shaft tower, the position of transformer substation, information such as topography that the circuit passed through directly perceivedly through three-dimensional distribution lines diagram, reduce the preparation work load of engineering personnel earlier stage of drawing, provide reference suggestion for engineering personnel draws new distribution network diagram based on three-dimensional scene, reduce the preparation work load in earlier stage, improve drawing work efficiency. The method provides more real and reliable functional environment information for engineering personnel, and improves the working efficiency and the working quality of routing inspection maintenance.
Referring to fig. 2, fig. 2 is a schematic flow chart of an automatic drawing method for a distribution network diagram based on three-dimensional visualization according to another embodiment of the present invention, which is a detailed flow chart of step S150, and includes:
and step S200, determining a power distribution station head node and a power distribution station tail node in the overhead line area.
And step S210, acquiring topographic parameters in the overhead line area.
And S220, determining the address selection information of the overhead tower according to the landform parameters.
Specifically, according to the site selection specification of the overhead tower, the method is used for providing reference topographic parameters for the site selection of the overhead tower: gradient parameters, hydrogeological parameters, building distribution parameters and traffic road distribution parameters. The overhead tower is to be constructed in a region with gentle topography, convenient traffic, dispersed building distribution and far away from natural disasters such as flood, landslide, earthquake and the like. In addition, the power system development planning in the overhead line area to be considered is selected for the site of the overhead tower, and the factors such as network structure, load distribution, urban construction planning, transportation, environmental influence and the like are comprehensively considered for site selection.
It should be noted that the topographic parameters are not limited to the parameters mentioned in this application, and the topographic parameters may also include: slope direction, slope change rate, water collection area and the like. Different topographic and geomorphic parameters can be selected according to specific engineering construction requirements to select the site of the overhead tower.
And step S230, acquiring an overhead line path set according to the overhead tower site selection information, the topographic parameters and the overhead line layout principle.
Specifically, marking a power distribution station head node and a power distribution station tail node in three-dimensional image data corresponding to an overhead line area;
further, acquiring a first node of the power distribution station, a last node of the power distribution station and an overhead pole tower node determined by the overhead pole tower address information;
further, according to the landform parameters and the overhead line layout principle, carrying out road section testing processing on the first nodes of the power distribution stations, the last nodes of the power distribution stations and the overhead pole tower nodes to obtain candidate road sections;
further, according to the candidate road sections, determining a first path set taking a first node of the power distribution station as a starting point, a second path set taking a last node of the power distribution station as a starting point and a third path set taking an overhead tower node as a starting point;
and further, combining and deleting candidate road sections in the first path set, the second path set and the third path set in sequence to obtain an overhead line path set of all paths between the first node of the power distribution station and the last node of the power station. Before merging, firstly, comparing candidate road sections in the first path set, the second path set and the third path set, and deleting the candidate road sections from the second path set and the third path set when the first high tower node and the second high tower node of the two candidate road sections are consistent and the candidate road sections are repeated.
The overhead line is erected along mountains, canals, green belts and roads according to the characteristics of urban terrains and landforms and the planning requirements of urban roads, the route selection is short, convenient and straight, and the intersection with the canals, the roads and the railways is reduced. An engineer may select a power distribution node from the set of overhead line paths and view the overhead line path for that power distribution node. The system is convenient for providing information for engineering personnel in practice and suitable routing inspection and maintenance are carried out on the power distribution node.
Step S240, obtaining a first load estimation value of each power distribution node in the overhead line area according to the power distribution node information.
Specifically, a power supply range of the first power distribution node is determined according to the original topological graph of the power distribution network, and the load intensity in the power supply range is inquired in the geographic information system, wherein the load intensity is a load estimation value of the first power distribution node. The same operation is carried out on the nodes except the first power distribution node, and the load estimation value of each power distribution node can be obtained. The load estimation value obtained by adopting the load density estimation method is rough, but the realization is convenient and quick. According to the obtained load estimation value of the power distribution node, reference information can be provided for engineering personnel when newly added nodes in the power distribution network are replanned, and reference standards are provided for equipment model selection and line model selection of the power distribution node.
It will be appreciated that there are a number of load estimation methods, such as: transformer capacity reduction algorithm and load curve reduction method, etc. Therefore, the method for obtaining the load estimation value of each power distribution node is not particularly limited in the present application.
And step S250, determining a first distribution line attribute according to the first load estimation value and the distribution line construction specification.
It is understood that the first distribution line attributes include: the type, length, cross-sectional area, wind resistance, and wire design parameters of the wire, among others.
And step S260, obtaining first distribution line information of the overhead line area according to the overhead line path set and the first distribution line attribute.
In the overhead line area, the conductor is generally selected from bare conductor, and when the conductor is used in forest areas, cities and towns and other areas, the conductor can be selected from insulated conductor. And estimating the line transport capacity according to the load estimation value, determining the section of the wire according to the current-carrying capacity, and determining the type of the wire according to the topographic parameters and meteorological conditions. In addition, according to the construction specifications of the distribution lines, the proper type of the tower is selected according to the meteorological conditions and the type of the wire in the overhead line area. Historical weather conditions in the overhead line area may be obtained from the local weather bureau. Specifically, the first distribution line information that the overhead line area has further includes: a set of overhead line paths, a first distribution line attribute, an overhead tower geographic location, a tower type, and so forth. The first distribution line information obtained by referring to the actual distribution line construction specification information has higher reference value and implementability.
Referring to fig. 3, for step S230: and according to the landform parameters and the overhead line layout principle, carrying out road section test processing on the first nodes of the power distribution station, the last nodes of the power distribution station and the overhead pole tower nodes to obtain candidate road sections, and further explaining the candidate road sections. Fig. 3 is a schematic flow chart of an automatic drawing method for a distribution network diagram based on three-dimensional visualization according to another embodiment of the present invention, which includes:
and step S300, integrating the head node of the power distribution station, the tail node of the power distribution station and the node of the overhead tower into a connection node set.
Step S310, selecting a first connecting node according to the connecting node set, connecting the first connecting node with a second connecting node by taking the first connecting node as an initial point to obtain a test road section, and calculating a first distance of the test road section, wherein the second connecting node is other nodes of the connecting node set except the first connecting node.
And traversing the connection node set to obtain a test road section about each connection node.
And S320, performing three-dimensional collision detection on the test road section in the overhead line area according to the overhead line layout principle, and obtaining a first collision path and a first communication path according to a three-dimensional collision detection result.
Specifically, a three-dimensional image of an overhead line area is imported into a CAD, and three-dimensional collision detection is carried out on a test road section in the CAD. In the application, a graphic method is adopted, the high dimension is reduced to the low dimension by using a projection dimension reduction technology, and then the interference test is carried out on the graphic of a projection plane. A vector (x, y, z) and a scalar (theta) are unified in a formula by a quadruple method, and whether collision or interference occurs is judged by solving a quadruple equation.
It should be noted that, in addition to the graph method adopted in the present application, the three-dimensional collision detection algorithm may also adopt a dynamic interference detection method, that is, in the process of performing line connection in the CAD, dynamic detection is performed on whether the test road section collides with a model such as a river or a building. The collision detection algorithm further comprises: a spatial decomposition method, a hierarchical inclusion method, a 3D clipping algorithm and the like. The algorithm adopted in the three-dimensional collision detection is not particularly limited as long as the algorithm can perform collision detection on the test road section and obtain the first collision path and the first communication path.
According to the overhead line layout principle, the overhead line is preferably short and straight in path selection according to urban terrain and landform characteristics and urban road planning requirements, and is erected along mountains, canals, green belts and roads to reduce intersection with rivers, roads and railways. The three-dimensional collision detection is beneficial to distinguishing collision paths and communication paths from the tested road sections, candidate road sections meeting the requirements of actual distribution line construction are obtained, and the three-dimensional collision detection has referential property. The influence of distribution line construction on existing buildings can be reduced as much as possible by selecting a proper road section, an effective and feasible recommended distribution path is provided for engineering personnel, and the working efficiency of the engineering personnel is improved.
Step S330, determining a candidate line of the first connection node from the first communication path according to the shortest path principle, the topographic and geomorphic parameters and the first distance.
Specifically, a first distance of each communication path is acquired, and a first communication path with the shortest first distance is selected to be determined as a candidate link of the first connection node. The length of the candidate line is short, and the construction cost can be saved. And when a line fault occurs, the short circuit line is beneficial to positioning the fault by engineering personnel quickly, and the working efficiency is improved.
Referring to fig. 4, fig. 4 is a schematic flow chart of an automatic drawing method of a distribution network diagram based on three-dimensional visualization according to another embodiment of the present invention, which is also another detailed flow chart of step S150, and includes:
step S400, acquiring topographic parameters in the cable line area.
Specifically, the obtained topographic parameters in the cable line area are as follows: grade parameters, hydrogeological parameters, building distribution parameters, traffic road distribution parameters, and municipal construction distribution parameters, among others.
And S410, obtaining a cable line test path according to the cable incoming position point, the topographic parameters and the cable line layout principle.
Specifically, according to the cable routing principle and the construction regulation habit, the power cable channel is generally arranged along the sidewalk on the east side and the south side of the road or the green belt. And in the central section of the city with high load density and concentrated cables, a cable tunnel is adopted. Hidden cable ducts are arranged at the main trunk road, the secondary trunk road and the centralized outlet line of the city. According to the landform parameters and the cable line layout principle, cable incoming line position points and cable incoming line position points are determined, and it can be understood that the number of the cable incoming line position points and the number of the cable incoming line position points are multiple.
And selecting a first cable incoming line position point from the plurality of cable incoming line position points, and connecting and obtaining all cable line test paths taking the first cable incoming line position point as a starting point by taking the first cable incoming line position point as an ending point. And traversing the cable incoming position points to obtain a cable line test path taking each cable incoming position point as a starting point.
Step S420, performing three-dimensional collision detection on the cable line test path in the cable line area, and obtaining a second communication path and a second collision path according to the three-dimensional collision detection result.
The cable channel can pass through the position underground without any municipal facilities such as pipes, nets, subways and the like, so that the three-dimensional collision detection of a cable line test path is also needed. The three-dimensional collision detection method employed in this step is identical to the three-dimensional collision detection method employed in step S320, and the second communication path and the second collision path are also obtained from the cable run test path.
And step S430, determining a cable incoming line position point, a cable incoming line position point and a second load estimation value in the cable line area according to the landform parameters and the power distribution node information.
The method for obtaining the second load estimation value is the same as the method for obtaining the first load estimation value in step S240, and is not described herein again.
Step S440, second distribution line information of the cable line area is determined according to the second load estimation value, the distribution line construction specification and the second communication path.
Specifically, a cable line candidate path which meets the distribution line construction specification and is shortest in line length is selected from the second communication paths, and a cable line path set is obtained.
Determining cable line attributes according to the second load estimation value and the distribution line construction specification, wherein the cable line attributes comprise: cable type, length, number, and cord design parameters, among others. Second distribution line information is determined to be present within the cable run area based on the cable run attributes and the set of cable run paths. It is understood that the second distribution line information should further include: cable entry and exit position information, cable laying methods, and the like. The second distribution line information provides a reliable power distribution suggestion for the engineering personnel, and the working efficiency and the quality of the engineering personnel are improved.
Referring to fig. 5, a server 40 according to an embodiment of the second aspect of the present invention is provided. The server 40 includes but is not limited to: a memory 42 for storing programs; a processor 41 for executing the program stored in the memory 42. The processor 41 and the memory 42 may be connected by a bus or other means.
The memory 42, which is a non-transitory computer readable storage medium, may be used to store non-transitory software programs and non-transitory computer executable programs. The processor 41 implements the above-described method for automatically drawing a power distribution grid map based on three-dimensional visualization by running non-transitory software programs and instructions stored in the memory 42.
The memory 42 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area can store and execute the automatic drawing method of the power distribution network based on the recommendation algorithm. Further, the memory 42 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory 42 optionally includes memory located remotely from the processor 41, and these remote memories may be connected to the processor 41 via a network.
The non-transitory software programs and instructions required to implement the recommendation algorithm based power distribution network autographing method described above are stored in the memory 42 and, when executed by the one or more processors 41, perform the recommendation algorithm based power distribution network autographing method described above, e.g., performing the method steps S100 to S160 described in fig. 1, the method steps S200 to S260 described in fig. 2, the method steps S300 to S330 described in fig. 3, and the method steps S400 to S440 described in fig. 4.
Additionally, an embodiment of the present invention also provides a computer-readable storage medium having stored thereon computer-executable instructions for execution by one or more control processors. The one or more control processors perform the recommendation algorithm based method for automatically mapping the power distribution network in the above method embodiment, for example, perform the above-described method steps S100 to S160 depicted in fig. 1, the method steps S200 to S260 depicted in fig. 2, the method steps S300 to S330 depicted in fig. 3, and the method steps S400 to S440 depicted in fig. 4.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods disclosed above may be implemented as software, firmware, hardware, or suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media and communication media. Computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, CD-ROM, or any other medium which can be used to store the desired information and which can be accessed by the computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A power distribution network diagram automatic drawing method based on three-dimensional visualization is characterized by comprising the following steps:
acquiring an original topology network of the power distribution network;
acquiring power distribution node information according to the original topology network of the power distribution network;
determining a hierarchical structure relationship between a target power distribution area and a power distribution network according to the power distribution node information;
obtaining a three-dimensional model diagram and geographic environment information of the target power distribution area according to a city information model and a geographic information system;
determining an overhead line area and a cable line area in the target power distribution area according to the power distribution node information, the geographic environment information and the power distribution line construction specification;
determining distribution line information in the overhead line area and the cable line area according to the distribution node information and distribution line construction specifications;
and drawing according to the hierarchical structure relationship of the power distribution network, the distribution line information and the three-dimensional model diagram corresponding to the target power distribution area to obtain a three-dimensional distribution line diagram, wherein the three-dimensional distribution line diagram is used for providing decision suggestions for users.
2. The method for automatically drawing the power distribution network diagram based on three-dimensional visualization as claimed in claim 1, wherein the determining a target power distribution area and a power distribution network hierarchical structure relationship according to the power distribution node information comprises:
acquiring the voltage grade and the geographical position information of the power distribution node according to the power distribution node information;
dividing the transformer substation nodes into a high-voltage distribution node set, a medium-voltage distribution node set and a low-voltage distribution node set according to the voltage grade and the distribution specification information of the distribution nodes;
determining a high-voltage distribution area, a medium-voltage distribution area and a low-voltage distribution area according to the high-voltage distribution node set, the medium-voltage distribution node set, the low-voltage distribution node set and the geographic position information;
determining the target power distribution area according to the high voltage power distribution area, the medium voltage power distribution area and the low voltage power distribution area;
and obtaining the network hierarchical structure relationship among the high-voltage distribution area, the medium-voltage distribution area and the low-voltage distribution area in the target distribution area according to the distribution node information.
3. The method for automatically drawing the power distribution network diagram based on three-dimensional visualization according to claim 2, wherein the determining of the overhead line area and the cable line area in the target power distribution area according to the power distribution node information, the geographic environment information and the power distribution line construction specification comprises:
obtaining building density and load density of the high-voltage distribution area, the medium-voltage distribution area and the low-voltage distribution area in the target distribution area according to the geographic environment information;
determining an area where the building density is less than a building density threshold and the load density is less than a load density threshold as the overhead line area;
determining an area within the target power distribution area other than the overhead line area as the cable line area.
4. The method for automatically drawing the power distribution network diagram based on three-dimensional visualization according to claim 1, wherein the determining of the distribution line information in the overhead line area and the cable line area according to the distribution node information and the distribution line construction specifications comprises:
determining a power distribution station head node and a power distribution station tail node in the overhead line area;
acquiring topographic and geomorphic parameters in the overhead line area;
determining the address information of the overhead tower according to the landform parameters;
acquiring an overhead line path set according to the overhead tower site selection information, the landform parameters and an overhead line layout principle;
acquiring a first load estimation value of each power distribution node in the overhead line area according to the power distribution node information;
determining a first distribution line attribute according to the first load estimation value and a distribution line construction standard;
and obtaining first distribution line information of the overhead line area according to the overhead line path set and the first distribution line attribute.
5. The method for automatically drawing the power distribution network diagram based on three-dimensional visualization according to claim 4, wherein the obtaining of the overhead line path set according to the overhead tower addressing information, the topographic parameters and the overhead line layout principle comprises:
marking the power distribution station head node and the power distribution station tail node in the three-dimensional image data corresponding to the overhead line area;
acquiring the power distribution station head node, the power distribution station tail node and the overhead pole tower node determined by the overhead pole tower address information;
according to the landform parameters and the overhead line layout principle, carrying out road section testing processing on the power distribution station head node, the power distribution station tail node and the overhead pole tower node to obtain candidate road sections;
according to the candidate road sections, determining a first path set taking the first node of the power distribution station as a starting point, a second path set taking the last node of the power distribution station as a starting point and a third path set taking the node of the overhead mast tower as a starting point;
and combining and deleting candidate road sections in the first path set, the second path set and the third path set in sequence to obtain the overhead line path sets of all the routes between the first node of the power distribution station and the last node of the power distribution station.
6. The method for automatically drawing the power distribution network diagram based on three-dimensional visualization according to claim 5, wherein the step of performing a road segment testing process on the distribution substation head node, the distribution substation end node and the overhead tower node according to the topographic parameters and the overhead line layout principle to obtain candidate road segments comprises:
collecting the power distribution station head node, the power distribution station tail node and the overhead tower node into a connecting node set;
selecting a first connecting node according to the connecting node set, connecting the first connecting node with a second connecting node by taking the first connecting node as a starting point to obtain a test road section, and calculating a first distance of the test road section, wherein the second connecting node is other nodes of the connecting node set except the first connecting node;
according to the overhead line layout principle, performing three-dimensional collision detection on the test road section in the overhead line area, and obtaining a first collision path and a first communication path according to a three-dimensional collision detection result;
and determining a candidate line of the first connecting node from the first connecting path according to a shortest path principle, the topographic parameters and the first distance.
7. The method for automatically plotting a power distribution network diagram based on three-dimensional visualization of claim 1, wherein the determining of the distribution line information in the overhead line region and the cable line region according to the distribution node information and the distribution line construction specification further comprises:
acquiring topographic and geomorphic parameters in the cable line area;
determining a cable incoming line position point, a cable incoming line position point and a second load estimation value in the cable line area according to the landform parameters and the power distribution node information;
obtaining a cable line test path according to the cable incoming position point, the landform parameters and a cable line layout principle;
performing three-dimensional collision detection on the cable line test path in the cable line area, and obtaining a second communication path and a second collision path according to a three-dimensional collision detection result;
and determining second distribution line information of the cable line area according to the second load estimation value, the distribution line construction specification and the second communication path.
8. The method for automatically drawing the power distribution network diagram based on three-dimensional visualization according to claim 1, wherein automatically drawing the three-dimensional model diagram corresponding to the distribution line information in the target distribution area according to the hierarchical structure relationship of the distribution network to obtain a three-dimensional distribution line diagram comprises:
carrying out model building and model connection in the target power distribution area according to the distribution line information to respectively obtain an overhead line corridor three-dimensional model diagram and a cable channel three-dimensional model diagram;
and connecting the three-dimensional model diagram of the overhead line corridor and the three-dimensional model diagram of the cable channel according to the hierarchical structure relationship of the power distribution network to obtain a complete three-dimensional power distribution line diagram.
9. A server, comprising: memory, processor and computer program stored on the memory and executable on the processor, wherein the processor when executing the computer program implements the method for automatically drawing the distribution grid diagram based on three-dimensional visualization according to any one of claims 1 to 8.
10. A computer-readable storage medium storing computer-executable instructions, wherein the computer can execute the method for automatically drawing the power distribution network diagram based on the three-dimensional visualization according to any one of claims 1 to 8.
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