CN104680331A - IFC based three-dimensional digital management platform for transmission and transformation project - Google Patents
IFC based three-dimensional digital management platform for transmission and transformation project Download PDFInfo
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Abstract
The invention relates to an IFC (Industry Foundation Classes) based three-dimensional digital management platform for a transmission and transformation project. The IFC based three-dimensional digital management platform comprises a geographic information server, a WEB server, a database server, a local area network, a VPN network and a client, wherein a complete multi-source heterogeneous background database is arranged in the database server and comprises DEM data, texture imaging data, GIS original vector data, space entity object data, attribute data and metadata; the space entity object data is obtained by converting the BIM data into the IFC data, and then converting the IFC data into CityGML data. Compared with the prior art, according to the IFC based three-dimensional digital management platform disclosed by the invention, the data resources are integrated, and the functions of exhibition, inquiry, retrieval, positioning, and safety management of electric power facilities are realized, and a complete electric power infrastructure three-dimensional visualized comprehensive application system can be formed.
Description
Technical field
The present invention relates to a kind of project of transmitting and converting electricity Digitalized management platform, especially relate to a kind of project of transmitting and converting electricity three-dimensional digital management platform based on IFC.
Background technology
Electric power is modern production and the requisite power of life, is also contemporary most convenient, the most easy to control, the scope of application modernization energy the most widely.For the design and construction of electric system facility, build the informationization model of Life cycle, scientific management network system design and construction flow process is the important prerequisite building intelligent grid.Architecture information modeling (Building Information Modeling, BIM) be by architecture information being carried out digitized processing and carrying out a kind of modeling method of storing, the coordinated management of construction work Life cycle can be realized by BIM technology and comprehensively to analyze.For different fields, the application of BIM needs architecture and specialized standard.
At present, architecture information modeling (Building Information Modeling, the BIM) standard based on IFC data layout has been widely used in various construction work.Application finds, existing BIM application is all towards residential construction area substantially, lack the overall application for specialized engineering fields such as basic municipal works, particularly electric power facility, this brings impassable obstacle in the popularization in Grid Construction Project field to BIM.In addition, three-dimensional digital platform in the market lacks unified model format standard, substantially all adopts the form of independent development, is difficult to accomplish the effectively multiplexing of model information.On the other hand, in the digital Platform of current application, most models only has geometrical body information and geographical location information, lacks corresponding attribute information, as simulator information and other various professional attributes information, and operation maintenance and management information etc.
Summary of the invention
Object of the present invention be exactly in order to overcome above-mentioned prior art exist defect and a kind of project of transmitting and converting electricity three-dimensional digital management platform based on IFC is provided.
Object of the present invention can be achieved through the following technical solutions:
A kind of project of transmitting and converting electricity three-dimensional digital management platform based on IFC, comprise geographic information server, WEB server, database server, LAN (Local Area Network), VPN and client, described geographic information server, LAN (Local Area Network) are connected by VPN between any two with client, and described WEB server, database server are connected with LAN (Local Area Network) respectively; It is characterized in that, complete multi-source heterogeneous background data base is provided with in described database server, comprise dem data, texture image data, GIS original vector data, spatial entity data, attribute data and metadata, wherein spatial entity data are by converting BIM data to IFC data, then convert IFC data to CityGML data and obtain.
Described multi-source heterogeneous background data base includes multiple table, and dissimilar data carry out store and management by different tables of data.
When data loading, each table of master data is defined unique major key, this main key value is stored in reference table, define the data constraint between each table by reference to showing, the attribute data of model is managed and analyzed.
Described dem data: for describing topographic relief form and carrying out 3-D display;
Described texture image data: comprise remotely-sensed data and ground photographs image and other data bitmap for texture;
Described GIS original vector data: the data after original ZDGIS data conversion;
Described spatial entity data: carry out the solid data after three-dimensional reconstruction;
Described attribute data: the attribute data comprising various spatial data;
Described metadata: the descriptive data being the content to a data set, quality and situation.
The BIM model of described spatial entity is obtained by following steps: the equipment of the various power industry of summary and induction and building type, sum up several basic building or unit, then different according to it profile features, comprehensive utilization of C SG and the complicated atural object of B-Rep method to transformer station and periphery structures carry out Model Reconstruction, adopt different data models respectively to each class building or unit.
Described BIM data convert IFC data to, then convert IFC data to CityGML data and are specially:
Multi-level semantic information is filtered into geological information and provides filtercondition, filters can obtain IFC entity geometry and retain IFC semantic information through semantic information;
After the expression-form that geological information is converted to GIS, realize the multi-level Semantic mapping of IFC to CityGML, finally carry out the CityGML model that geometry semantically enhancement obtains Different L OD level.
Compared with prior art, the model attributes database that foundation of the present invention is corresponding with power industry IFC standard, and realize and the associating of three-dimensional model.In addition, the information platform in view of current use is mostly carry out model and information sharing based on unit or limited service terminal, and therefore another important goal of this platform realizes based on the BIM model of internet and visiting mechanism.
The present invention adopts 3DGIS+BIM information fusion and this international cutting edge technology of Integration ofTechnology, digital Platform architecture design is carried out based on the Integrated predict model thought of IFC standard and three-dimensional geographic space information platform and technical method, build the electric power facility BIM application network environment based on the B/S network architecture, integrate spatial geographic information resource, power infrastructures BIM model and attribute data resource, realize the displaying of electric power facility, inquiry, retrieval, location, the functions such as safety management, form a set of perfect power infrastructures three-dimensional visualization comprehensive application system.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is data transition diagram of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
This platform adopts 3DGIS+BIM information fusion and this international cutting edge technology of Integration ofTechnology, BIM application network environment is built based on B/S framework, integrate spatial geographic information resource, power infrastructures BIM model and attribute data resource, realize the displaying of electric power facility, inquiry, retrieval, location, the functions such as safety management, form a set of perfect power infrastructures three-dimensional visualization comprehensive application system.
Platform architecture take service-oriented design as theory, carry out digital Platform architecture design based on the Integrated predict model thought of IFC standard and three-dimensional geographic space information platform and technical method, build the 3DGIS+BIM Digital Electric facilities information platform based on the B/S network architecture.As shown in Figure 1, based on the project of transmitting and converting electricity three-dimensional digital management platform of IFC, comprise geographic information server, WEB server, database server, LAN (Local Area Network), VPN and client, described geographic information server, LAN (Local Area Network) are connected by VPN between any two with client, and described WEB server, database server are connected with LAN (Local Area Network) respectively.
For buildings such as transformer stations, not only profile is different, and the equipment of inside and pipeline also ever-changing, a general geometric model cannot be adopted to express all building elements and element of installation.One of gordian technique of this platform, namely be equipment and the building type of the various power industry of summary and induction, sum up several basic building or unit, then different according to it profile features, comprehensive utilization of C SG and B-Rep method carry out Model Reconstruction to complicated atural objects such as transformer station and periphery structures, adopt different data models respectively to each class building or unit.
Although current three-dimensional picture hardware is more and more faster, data are eventually had to transmit the upper limit with process.For the project of transmitting and converting electricity model that a data volume is huge, graphic hardware has determined the quality of scene substantially to the restriction of data processing.In order to improve the quality of scene drawing, on the basis of existing hardware level, must develop corresponding accelerated algorithm of rendering, this is only comparatively feasible solution.
Therefore this platform adopts redundant data that is far and near based on viewpoint and visible face to pick up choosing (Culling) algorithm, mainly comprises the technical research that object picks up choosing, dorsad face rejecting and level of detail three aspects.The basic ideas of this algorithm are: for improving the rendering speed of scene and playing up quality, system only needs to process those for visible polygon viewpoint, will and sightless polygon pick up and elect, stop carrying out computing to it, thus greatly reduce system need data volume to be processed, improve display quality.In addition, large-scale terrain rendering is three-dimensional geographic information scene basic expressions carrier, level-of-detail technology (LOD) is the effective means solving large-scale terrain real-time rendering, better can simplify scene complexity, reduce figure display distortion degree, meeting requirements on three-dimensional terrain rendering requirement of real-time.The technology that platform adopts traditional quaternary tree and LOD to combine, by large scale digital elevation model (DEM) is carried out piecemeal, to the size Bedding storage of data in block by resolution, sets up the pyramid of multiresolution, multilayer; Client collects as seen according to viewpoint and obtains regular DEM grid data by network request, sets up the three-dimensional model of landform, builds large-scale dimensional topography by splicing combination DEM grid model.
The infrastructure projects such as electric power facility are different from general industrial civil building, often relate to extensive area and cross over longer metric space, this just needs the support of Geographic Information System (GIS) and distinctive spatial analysis functions thereof, to meet design and construction and the operation management needs of power construction engineering different spaces yardstick.Platform data wide material sources, type are abundant, complex structure, comprising: geo-spatial data, electrical network space thematic data, three dimensional device model data, design business datum etc.According to the needs of power engineering construction management, this platform needs the needs considering separate sources multiple types of data information integerated in database design, and in this isomerous multi-source database, the data of store and management mainly comprise following several:
Dem data: for describing topographic relief form and carrying out 3-D display;
Texture image data: comprise remotely-sensed data and ground photographs image and other data bitmap for texture;
GIS original vector data: the data after original ZDGIS data conversion;
Spatial entity data: carry out the solid data after three-dimensional reconstruction;
Attribute data: the attribute data comprising various spatial data;
Metadata: metadata is the data of relevant data.It is the descriptive data of content, quality, situation and other characteristic to a data set.
This platform establishes complete multi-source heterogeneous background data base, wherein includes multiple table, and dissimilar data carry out store and management by different tables of data.When data loading, each table of master data being defined unique major key, this main key value is stored in reference table, defining the data constraint between each table by reference to showing.And the attribute data of model is managed and analyzed.Build in storehouse in data, reduce Data Migration, arrangement to greatest extent, to reduce data integration job amount; In data management, adopt data bus intergration model to carry out lightweight, the data storage of the high degree of coupling, Online release, integrated management to multivariate data, guarantee data integrity, improve data set and become second nature; Based on space quaternary tree principle, pyramid construction is carried out to spatial data, and fast indexing mechanism is set up to all kinds of spatial data.
IFC (Industry Foundat ion C lasses) standard is the construction work data exchange standard that IA I (InternationalAlliance of In teroperability) organizes to set up.The information of IFC standard overall describes and is divided into four levels, is respectively resource layer, core layer, inclusion layer, field layer from the bottom up.Mostly be in resource layer that Back ground Information defines, such as material, geometry, topology etc.; The general frame of core layer definition information model, such as, relation between engineering object, the position of engineering object and geometric configuration etc.; Inclusion layer defines the information of multi-disciplinary exchange, such as wall, beam, live, door, window etc.; Field layer defines the information in respective field, the boiler, fan, air throttle etc. in such as HVAC field.
Component in project of transmitting and converting electricity is the core content of BIM design information model, and other model information all defines around component model.This platform establishes power transmission and transformation building structural element description system based in IFC model structure system, can describe the structural elements such as post, beam, plate, wall, basis, stair, these structural elements all derive from from building element entity (IfcBuildingElement).
BIM and GIS integrated is study hotspot outside Present Domestic and difficulties, is also the core technology advantage of this platform.This platform adopts the general ID model criteria in IFC (Industry Foundation Classes) and CityGML (City Geography Markup Language) these two BIM and 3DGIS fields to carry out information fusion as information fusion foundation semantic meaning representation respectively.
Because IFC and CityGML employs different object geometric expression modes and semanteme respectively, both fusions are made to become international difficulties.For realizing IFC and CityGML data integration, describe both in table 1 at geometry, the difference of the aspects such as semanteme and contact.
Table 1
On this comparative analysis basis, attempting herein to expand to scope more widely by the semanteme of two kinds of standards and the discussion of Geometrical mergence, providing basis for realizing the multiple dimensioned automatic conversion of IFC to CityGML.Fig. 2 describes the transformation model of BIM solid model to detail GIS surface model.Multi-level semantic information is filtered into geological information and provides filtercondition, filters can obtain IFC entity geometry and retain IFC semantic information through semantic information; After the expression-form that geological information is converted to GIS, realize the multi-level Semantic mapping of IFC to CityGML, finally carry out the CityGML model that geometry semantically enhancement obtains Different L OD level.
Case application
Under Guo Wang Shanghai Power Company tissue, this platform has carried out practical application to the electrical network of Xiaolujiazui Region, Shanghai Pudong New Area.Relate to Jimo, 2, Dongchang 220kV transformer station, 6 35kV transformer stations, 10 square kilometres of underground utilities (425, work well, comb 1041 sections 39.6 kilometers, 10kV and above cable 220 go back tos 499.7 kilometers) and 1 220kV cable tunnel, in feasible region, the platform management application of all transformer stations and associated tunnel, comb, work well and cable, indicates the foundation of the Power Network Digital of current largest domestic scale.By this three-dimensional platform, design and administrative authority achieve the comprehensive supervision of electrical equipment information, comprise checking of system, equipment essential information, attribute etc., running status inquiry, the checking etc. of history data; Design and establish the compatible all Digital Display platforms following the three-dimensional model of IFC standard data format of energy, realize based on IFC form three-dimensional BIM model 3DGIS platform importing and browse; Realize the three-dimensional geographic information based on LAN and the transmission of BIM model data; Realize the browsing of local three-dimensional digital model, roam, make an inspection tour and rotation etc.; To realize comprehensively checking and supervising electrical equipment information.
The application of project of transmitting and converting electricity BIM technology improves design-build efficiency and the management level of engineering, achieves informationization and the three-dimensional reality of engineering.This platform, based on international IFC standard, constructs project of transmitting and converting electricity three-dimensional digital platform.This platform has good effect of visualization, easily operability and powerful data managing capacity, solid system platform can be provided to support for the digital Construction of the design of Guo Wang Shanghai Power Company engineering, construction, O&M.Have intelligent grid construction from now on and instruct reference function, to improve power grid construction returns of investment and efficiency.
Shown by pilot project application practice, the achievement in research of this platform is that intelligent grid construction field provides new Theory and applications platform, really achieve the seamless of 3D GIS+BIM integrated with information lossless, and from the whole world to local, from ground to underground, from dimensional topography to three-dimensional building, outdoor to indoor, from static object to dynamic object, from single project management to Amulti-project management, from single system, be applied to multisystem comprehensive integration application.Be with a wide range of applications, good Social and economic benef@will be obtained.
Claims (6)
1. the project of transmitting and converting electricity three-dimensional digital management platform based on IFC, comprise geographic information server, WEB server, database server, LAN (Local Area Network), VPN and client, described geographic information server, LAN (Local Area Network) are connected by VPN between any two with client, and described WEB server, database server are connected with LAN (Local Area Network) respectively; It is characterized in that, complete multi-source heterogeneous background data base is provided with in described database server, comprise dem data, texture image data, GIS original vector data, spatial entity data, attribute data and metadata, wherein spatial entity data are by converting BIM data to IFC data, then convert IFC data to CityGML data and obtain.
2. a kind of project of transmitting and converting electricity three-dimensional digital management platform based on IFC according to claim 1, it is characterized in that, described multi-source heterogeneous background data base includes multiple table, and dissimilar data carry out store and management by different tables of data.
3. a kind of project of transmitting and converting electricity three-dimensional digital management platform based on IFC according to claim 2, it is characterized in that, when data loading, each table of master data is defined unique major key, this main key value is stored in reference table, define the data constraint between each table by reference to showing, the attribute data of model is managed and analyzed.
4. a kind of project of transmitting and converting electricity three-dimensional digital management platform based on IFC according to claim 2, is characterized in that,
Described dem data: for describing topographic relief form and carrying out 3-D display;
Described texture image data: comprise remotely-sensed data and ground photographs image and other data bitmap for texture;
Described GIS original vector data: the data after original ZDGIS data conversion;
Described spatial entity data: carry out the solid data after three-dimensional reconstruction;
Described attribute data: the attribute data comprising various spatial data;
Described metadata: the descriptive data being the content to a data set, quality and situation.
5. a kind of project of transmitting and converting electricity three-dimensional digital management platform based on IFC according to claim 2, it is characterized in that, the BIM model of described spatial entity is obtained by following steps: the equipment of the various power industry of summary and induction and building type, sum up several basic building or unit, then different according to it profile features, comprehensive utilization of C SG and the complicated atural object of B-Rep method to transformer station and periphery structures carry out Model Reconstruction, adopt different data models respectively to each class building or unit.
6. a kind of project of transmitting and converting electricity three-dimensional digital management platform based on IFC according to claim 2, it is characterized in that, described BIM data convert IFC data to, then convert IFC data to CityGML data and are specially:
Multi-level semantic information is filtered into geological information and provides filtercondition, filters can obtain IFC entity geometry and retain IFC semantic information through semantic information;
After the expression-form that geological information is converted to GIS, realize the multi-level Semantic mapping of IFC to CityGML, finally carry out the CityGML model that geometry semantically enhancement obtains Different L OD level.
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| CN111882654A (en) * | 2020-06-18 | 2020-11-03 | 广东电网有限责任公司广州供电局 | Lightweight three-dimensional rendering method applied to 110kV transformer substation |
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