CN113112594A - Power transmission and transformation project three-dimensional model lightweight method and device based on electric power GIM - Google Patents
Power transmission and transformation project three-dimensional model lightweight method and device based on electric power GIM Download PDFInfo
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Abstract
The application discloses a power transmission and transformation project three-dimensional model lightweight method and device based on electric power GIM, and the method comprises the following steps: analyzing and assembling original model data again to obtain json data, and processing partial data to obtain new model data; slicing the new model data, assembling the data according to a scheduling algorithm according to the hierarchy of the map, and generating tile data; and carrying out lightweight display on the tile data through a three-dimensional display platform. Through the mode, the method and the device have the advantages of being convenient to display, high in rendering speed, cross-platform, highly light in weight, capable of keeping geometric accuracy, attributes and the like of original design, browsing in the browser and high in viewing efficiency.
Description
Technical Field
The application relates to the field of data processing and the technical field of evaluation, operation and maintenance of power systems, in particular to a power transmission and transformation engineering three-dimensional model lightweight method and device based on power GIM.
Background
In recent years, with the rapid development of economy, the electricity demand of the whole society is increased very quickly, the scale of power transmission and transformation projects to be built and operated and maintained is larger and larger, the requirements of power grid companies on design, review, construction and operation and maintenance are higher and higher, and the requirement on improving the input-output ratio is stronger than that of the past. On the other hand, in terms of design, evaluation, construction and operation and maintenance of the power transmission and transformation project, the power transmission and transformation project is extremely complex in design, multiple in influence factors, and the change of the whole design scheme can be caused by slight change of the precondition, so that great complexity is brought to the design, evaluation, construction and operation and maintenance. In combination with the prior design that the drawing is mainly carried out through CAD, the review is also carried out by checking the drawing and the related data thereof, and if the designed power transmission and transformation project can be browsed, reviewed and operated and maintained through a browser, great convenience and improvement of working efficiency are brought to related personnel. And the design data is delivered in the form of drawings, and the problems of non-visual checking, large data volume, relatively troublesome checking, low evaluation efficiency and high operation and maintenance cost also exist.
In the past model display, the model is directly converted into a 3d-tiles mode for loading, so that a performance bottleneck can be met, and the crash of the browser can be seriously caused.
Disclosure of Invention
The application provides a power transmission and transformation project three-dimensional model lightweight method and device based on electric power GIM, and aims to solve the problems that in the prior art, model display has many errors and is low in efficiency.
In order to solve the technical problem, the application provides a power transmission and transformation project three-dimensional model lightweight method based on electric power GIM, which comprises the following steps: analyzing and assembling original model data again to obtain json data, and processing partial data to obtain new model data; slicing the new model data, assembling the data according to a scheduling algorithm according to the hierarchy of the map, and generating tile data; and carrying out lightweight display on the tile data through a three-dimensional display platform.
Optionally, the tile data is displayed in a lightweight manner through a three-dimensional display platform, including: finishing lightweight display of the three-dimensional model of the power transmission and transformation project by using a self-defined LOD rendering rule and a rendering scheduling algorithm; the rendering scheduling algorithm is based on a 3d-tiles scheduling principle, tile data are scheduled to enter/exit a rendering queue, and a grid object is rendered/released based on an LOD rendering rule, so that lightweight display of the three-dimensional model of the power transmission and transformation project is achieved.
Optionally, the LOD rendering rule includes: dividing the three-dimensional model of the power transmission and transformation project into a plurality of grids, wherein each grid comprises a GIM model entity; loading model data of a corresponding grid under the current visual angle according to different visual angles; and processing the three-dimensional model of the power transmission and transformation project according to the distance of the visual angle, only loading the outline data when the distance exceeds a set value, and displaying the detail data of the three-dimensional model of the power transmission and transformation project when the distance is less than the set value.
Optionally, the new model data is vector data, the tile data constitutes a tile model, and the tile model is a multi-resolution hierarchical model, and the resolution is lower and lower from the bottom layer to the top layer of the tile pyramid, but the represented geographic range is unchanged.
Optionally, slicing new model data, and assembling the data according to a scheduling algorithm according to a map hierarchy to generate tile data, including: and dividing the vector data into tiles according to the quadtree index, storing the vector data in the region by each tile, adding custom LOD rendering rule data into the tiles, and finally generating the tile data.
In order to solve the technical problem, the present application provides a power transmission and transformation engineering three-dimensional model lightweight device based on electric power GIM, includes: the data analysis module is used for analyzing and assembling the original model data again to form json data, and processing partial data to obtain new model data; the slicing processing module is used for slicing the new model data, assembling the data according to the hierarchy of the map and a scheduling algorithm and generating tile data; and the lightweight display module is used for displaying the tile data in a lightweight manner through the three-dimensional display platform.
Optionally, the light-weight display module is further configured to complete light-weight display of the three-dimensional model of the power transmission and transformation project by using a customized LOD rendering rule and a rendering scheduling algorithm; the rendering scheduling algorithm is based on a 3d-tiles scheduling principle, tile data are scheduled to enter/exit a rendering queue, and a grid object is rendered/released based on an LOD rendering rule, so that lightweight display of the three-dimensional model of the power transmission and transformation project is achieved.
Optionally, the LOD rendering rule includes: dividing the three-dimensional model of the power transmission and transformation project into a plurality of grids, wherein each grid comprises a GIM model entity; loading model data of a corresponding grid under the current visual angle according to different visual angles; and processing the three-dimensional model of the power transmission and transformation project according to the distance of the visual angle, only loading the outline data when the distance exceeds a set value, and displaying the detail data of the three-dimensional model of the power transmission and transformation project when the distance is less than the set value.
Optionally, the new model data is vector data, the tile data constitutes a tile model, and the tile model is a multi-resolution hierarchical model, and the resolution is lower and lower from the bottom layer to the top layer of the tile pyramid, but the represented geographic range is unchanged.
Optionally, the slicing processing module is further configured to divide the vector data into tiles according to the quadtree index, each tile stores the vector data in this region, and add custom LOD rendering rule data into the tile, and finally generate the tile data.
The application provides a power transmission and transformation project three-dimensional model lightweight method and device based on electric power GIM, and the method comprises the following steps: analyzing and assembling original model data again to obtain json data, and processing partial data to obtain new model data; slicing the new model data, assembling the data according to a scheduling algorithm according to the hierarchy of the map, and generating tile data; and carrying out lightweight display on the tile data through a three-dimensional display platform. Through the mode, the method and the device have the advantages of being convenient to display, high in rendering speed, cross-platform, highly light in weight, capable of keeping geometric accuracy, attributes and the like of original design, browsing in the browser and high in viewing efficiency.
Drawings
In order to more clearly illustrate the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic flow chart of an embodiment of a power transmission and transformation project three-dimensional model weight reduction method based on electric power GIM according to the present application;
FIG. 2 is a diagram illustrating the basic rules of a LOD rendering rule;
fig. 3 is a schematic structural diagram of an embodiment of a three-dimensional model weight reduction device for power transmission and transformation engineering based on an electric power GIM according to the present application.
Detailed Description
In order to enable those skilled in the art to better understand the technical solution of the present application, the method and apparatus for weight reduction of a power transmission and transformation project three-dimensional model based on electric power GIM provided by the present application are further described in detail below with reference to the accompanying drawings and the detailed description.
The noun explains:
GIM: the Grid Information Model is a power Grid Information Model, and the GIM file is a power Grid three-dimensional design result standard output file.
json: JavaScript Object notification is a lightweight data exchange format.
LOD: levels of Detail, meaning multi-level of Detail model techniques.
3 d-tiles: is an open specification for streaming large-scale heterogeneous 3D geospatial data sets.
The application provides a power transmission and transformation project three-dimensional model weight reduction method based on electric power GIM, please refer to fig. 1, fig. 1 is a schematic flow chart of an embodiment of the power transmission and transformation project three-dimensional model weight reduction method based on electric power GIM, and in this embodiment, the method may specifically include the following steps:
s110: and analyzing and assembling the original model data again to obtain json data, and processing partial data to obtain new model data.
The step mainly comprises two aspects of work, namely: and the original model data is re-analyzed and assembled into json data because the original model data cannot be friendly and directly utilized by a foreground. And secondly, expanding the tower data of the long and short legs, wherein the tower information displayed by the original data is the parameterized description of the first body, the second body, the tower legs and each tower leg in four quadrants according to the current length, and the calculation of the step is carried out, only the data of the current quadrant is reserved, and the calculation data amount of the foreground is saved.
S120: and slicing the new model data, assembling the data according to a scheduling algorithm according to the hierarchy of the map, and generating the tile data.
The new model data is vector data, the vector data calculated and converted in step S110 is sliced, and the data is assembled according to the map hierarchy by the scheduling algorithm, so as to generate tile data. The vector data is data representing the position and shape of a map graphic or a geographic entity in x and y coordinates in rectangular coordinates. Vector data generally represent the spatial position of a geographic entity as accurately as possible by recording coordinates.
The tile data form a tile model, and the tile model is a multi-resolution hierarchical model, wherein the resolution is lower and lower from the bottom layer to the top layer of the tile pyramid, but the represented geographic range is unchanged.
Optionally, slicing new model data, and assembling the data according to a scheduling algorithm according to a map hierarchy to generate tile data, including: and cutting the vector data into tiles according to the quadtree index, storing the vector data in the region by each tile, adding custom LOD rendering rule data into the tiles for use in lightweight display in the step S130, and finally generating the tile data.
S130: and carrying out lightweight display on the tile data through a three-dimensional display platform.
Specifically, after the tile data is generated in step S120, the foreground may complete the lightweight display of the three-dimensional model of the power transmission and transformation project by using the customized LOD rendering rule and the rendering scheduling algorithm through the three-dimensional display platform.
The rendering scheduling algorithm is based on a 3d-tiles scheduling principle, tile data are scheduled to enter/exit a rendering queue, and a grid object is rendered/released based on an LOD rendering rule, so that lightweight display of the three-dimensional model of the power transmission and transformation project is achieved.
When the model is browsed, on one hand, only tower data of a corresponding grid under the current view angle can be loaded according to the difference of the view angles; on the other hand, the tower can be processed according to the distance of the visual angle, only contour data are loaded when the distance exceeds a set value, and the detail data of the three-dimensional data of the power transmission and transformation project are displayed when the distance is less than the set value.
It should be noted that, in step S130, the data sliced in step S120 may be directly loaded in a static file by a browser, and then displayed in the above manner.
For better understanding of the LOD rendering rule, please refer to fig. 2, and fig. 2 is a basic rule illustration diagram of the LOD rendering rule.
Mesh type: mesh type
Geometry LOD: multilevel details of geometric figures
Model LOD: multi-level details of a model
The LOD rendering rule includes: dividing the three-dimensional model of the power transmission and transformation project into a plurality of grids, wherein each grid comprises a GIM model entity; loading model data of a corresponding grid under the current visual angle according to different visual angles; and processing the three-dimensional model of the power transmission and transformation project according to the distance of the visual angle, only loading the outline data when the distance exceeds a set value, and displaying the detail data of the three-dimensional model of the power transmission and transformation project when the distance is less than the set value.
Specifically, a division into 3 aspects is illustrated as follows:
1. for an entire project gim, the scene is very large, in case of a 10000-meter square space, the space is divided into 1024 × 1024 small squares, each square is filled with a specific gim model entity, but for each view angle of the user, the maximum view angle is to see all the grids of 1024 × 1024, but after the shots are zoomed in, only the data of part of the grids of 1024 × 1024 can be seen, and only the data of the grids seen by the view angle of the user is loaded at each time of loading.
2. According to the perspective, details of the gim model are shown, if the gim model is seen to be a line too far away, and the details of the gim model are gradually loaded only when the perspective is drawn closer.
3. For the tower in the gim model, the tower is not shown when the distance is far, and the distance is gradually reduced as follows: the line, the outline of the tower, the specific material of the tower, the details of the insulator string of the tower, the details of the tower foundation and the like. For the insulator string, which is a component with relatively high performance, the data size is degraded, and the data is not loaded into the browser all at once.
The electric power GIM-based power transmission and transformation project three-dimensional model lightweight method has the advantages of being convenient to display, high in rendering speed, cross-platform and highly lightweight, simultaneously retains geometric accuracy, attributes and the like of original design, browses in a browser, and is extremely high in viewing efficiency.
Based on the aforementioned power transmission and transformation project three-dimensional model weight reduction method based on the power GIM, the present application provides a power transmission and transformation project three-dimensional model weight reduction device based on the power GIM, please refer to fig. 3, and fig. 3 is a schematic structural diagram of an embodiment of the power transmission and transformation project three-dimensional model weight reduction device based on the power GIM. In this embodiment, the power transmission and transformation project three-dimensional model weight reduction device 300 based on the power GIM may include a data analysis module 310, a slicing processing module 320, and a weight reduction display module 330.
The data analysis module 310 is configured to perform reanalysis and assembly on the original model data to obtain json data, and process part of the data to obtain new model data;
the slicing processing module 320 is configured to perform slicing processing on the new model data, and assemble the data according to a scheduling algorithm according to a map hierarchy to generate tile data;
and the lightweight display module 330 is used for displaying the tile data in a lightweight manner through the three-dimensional display platform.
Optionally, the lightweight display module 330 is further configured to complete lightweight display of the three-dimensional model of the power transmission and transformation project by using a customized LOD rendering rule and a rendering scheduling algorithm; the rendering scheduling algorithm is based on a 3d-tiles scheduling principle, tile data are scheduled to enter/exit a rendering queue, and a grid object is rendered/released based on an LOD rendering rule, so that lightweight display of the three-dimensional model of the power transmission and transformation project is achieved.
Optionally, the LOD rendering rule includes: dividing the three-dimensional model of the power transmission and transformation project into a plurality of grids, wherein each grid comprises a GIM model entity; loading model data of a corresponding grid under the current visual angle according to different visual angles; and processing the three-dimensional model of the power transmission and transformation project according to the distance of the visual angle, only loading the outline data when the distance exceeds a set value, and displaying the detail data of the three-dimensional model of the power transmission and transformation project when the distance is less than the set value.
Optionally, the new model data is vector data, the tile data constitutes a tile model, and the tile model is a multi-resolution hierarchical model, and the resolution is lower and lower from the bottom layer to the top layer of the tile pyramid, but the represented geographic range is unchanged.
Optionally, the slicing processing module 320 is further configured to divide the vector data into tiles according to the quadtree index, where each tile stores the vector data in this region, add custom LOD rendering rule data into the tile, and finally generate the tile data.
The application provides a power transmission and transformation project three-dimensional model lightweight method and device based on electric power GIM, and the method comprises the following steps: analyzing and assembling original model data again to obtain json data, and processing partial data to obtain new model data; slicing the new model data, assembling the data according to a scheduling algorithm according to the hierarchy of the map, and generating tile data; and carrying out lightweight display on the tile data through a three-dimensional display platform. Through the mode, the method and the device have the advantages of being convenient to display, high in rendering speed, cross-platform, highly light in weight, capable of keeping geometric accuracy, attributes and the like of original design, browsing in the browser and high in viewing efficiency.
It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. In addition, for convenience of description, only a part of structures related to the present application, not all of the structures, are shown in the drawings. The step numbers used herein are also for convenience of description only and are not intended as limitations on the order in which the steps are performed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first", "second", etc. in this application are used to distinguish between different objects and not to describe a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (10)
1. A power transmission and transformation project three-dimensional model lightweight method based on electric power GIM is characterized by comprising the following steps:
analyzing and assembling original model data again to obtain json data, and processing partial data to obtain new model data;
slicing the new model data, assembling the data according to a scheduling algorithm according to the hierarchy of the map, and generating tile data;
and carrying out lightweight display on the tile data through a three-dimensional display platform.
2. The method for weight reduction of the electric power GIM-based three-dimensional model of power transmission and transformation project of claim 1, wherein the weight reduction display of the tile data through a three-dimensional display platform comprises the following steps:
finishing lightweight display of the three-dimensional model of the power transmission and transformation project by using a self-defined LOD rendering rule and a rendering scheduling algorithm;
and the rendering scheduling algorithm schedules the tile data to enter/exit a rendering queue based on a 3d-tiles scheduling principle, and renders/releases the grid object based on the LOD rendering rule so as to realize lightweight display of the three-dimensional model of the power transmission and transformation project.
3. The electric power GIM-based power transmission and transformation project three-dimensional model weight reduction method according to claim 2, wherein the LOD rendering rule comprises:
dividing the three-dimensional power transmission and transformation project model into a plurality of grids, wherein each grid comprises a GIM model entity;
loading model data corresponding to the grids under the current visual angle according to different visual angles;
and processing the three-dimensional model of the power transmission and transformation project according to the distance of the visual angle, only loading contour data when the distance exceeds a set value, and displaying the detail data of the three-dimensional model of the power transmission and transformation project when the distance is less than the set value.
4. The method for reducing the weight of the three-dimensional power transmission and transformation project model based on the electric power GIM according to claim 1,
the new model data are vector data, the tile data form a tile model, the tile model is a multi-resolution hierarchical model, the resolution is lower and lower from the bottom layer to the top layer of the tile pyramid, and the represented geographic range is unchanged.
5. The method for reducing weight of the three-dimensional power transmission and transformation project model based on the electric power GIM according to claim 4, wherein the step of slicing the new model data and assembling the data according to a scheduling algorithm and a map hierarchy to generate tile data comprises the steps of:
and dividing the vector data into tiles according to the quadtree index, storing the vector data in the region by each tile, adding self-defined LOD rendering rule data into the tiles, and finally generating the tile data.
6. The utility model provides a power transmission and transformation engineering three-dimensional model lightweight device based on electric power GIM which characterized in that includes:
the data analysis module is used for analyzing and assembling the original model data again to form json data, and processing partial data to obtain new model data;
the slicing processing module is used for slicing the new model data, assembling the data according to the hierarchy of the map and a scheduling algorithm, and generating tile data;
and the lightweight display module is used for displaying the tile data in a lightweight manner through the three-dimensional display platform.
7. The electric power GIM-based three-dimensional model weight reduction device for electric transmission and transformation project according to claim 6,
the lightweight display module is also used for completing lightweight display of the three-dimensional model of the power transmission and transformation project by utilizing a self-defined LOD rendering rule and a rendering scheduling algorithm;
and the rendering scheduling algorithm schedules the tile data to enter/exit a rendering queue based on a 3d-tiles scheduling principle, and renders/releases the grid object based on the LOD rendering rule so as to realize lightweight display of the three-dimensional model of the power transmission and transformation project.
8. The electric power GIM-based three-dimensional model weight reduction device for electric transmission and transformation projects according to claim 7, wherein the LOD rendering rule comprises:
dividing the three-dimensional power transmission and transformation project model into a plurality of grids, wherein each grid comprises a GIM model entity;
loading model data corresponding to the grids under the current visual angle according to different visual angles;
and processing the three-dimensional model of the power transmission and transformation project according to the distance of the visual angle, only loading contour data when the distance exceeds a set value, and displaying the detail data of the three-dimensional model of the power transmission and transformation project when the distance is less than the set value.
9. The electric power GIM-based three-dimensional model weight reduction device for electric transmission and transformation project according to claim 6,
the new model data are vector data, the tile data form a tile model, the tile model is a multi-resolution hierarchical model, the resolution is lower and lower from the bottom layer to the top layer of the tile pyramid, and the represented geographic range is unchanged.
10. The electric power GIM-based three-dimensional model weight reduction device for electric transmission and transformation project according to claim 9, wherein,
the slicing processing module is further configured to divide the vector data into tiles according to the quadtree index, each tile stores the vector data in the region, and add custom LOD rendering rule data to the tile, and finally generate the tile data.
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| CN113627004A (en) * | 2021-07-31 | 2021-11-09 | 国网福建省电力有限公司 | Evaluation method and system for power transmission and transformation three-dimensional model design |
| CN113627004B (en) * | 2021-07-31 | 2023-07-28 | 国网福建省电力有限公司 | Evaluation method and system for three-dimensional model design of power transmission and transformation |
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