CN105005676A - Three-dimension design method based on cable engineering information model - Google Patents
Three-dimension design method based on cable engineering information model Download PDFInfo
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Abstract
The invention relates to a three-dimension design method based on a cable engineering information model. The three-dimension design method comprises the following steps: 1), according to main problems existing in city power cable and channel management at the present stage and defects of the conventional two-dimension design, which exist in actual engineering, determining an application field of the cable engineering information model; 2), determining demands in the three stages of cable engineering building, design and drawing and obtaining the achieving purpose of the cable engineering information model; 3), building the cable engineering information model by using a three-dimension design platform and according to a standard model base and regional digital model base; 4), carrying out three-dimension design on cable engineering according to the cable engineering information model and by combining cable structure parameters, a cable laying method and cable running parameters, and finally, obtaining a three-dimensional cable engineering designing scheme. Compared with the prior art, the three-dimension design method provided by the invention has the advantages of being intuitive and accurate, and advanced in platform and the like.
Description
Technical field
The present invention relates to cable work field, especially relate to a kind of three-dimensional design method based on cable work information model.
Background technology
Along with the development in city, the further raising of cable rate, each city develops rapidly, and its power infrastructures construction is all with reference to Urbanization Mode, and electric line adopts cable in a large number.Rapid increasing due to cable pipeline scale adds that current management mode relatively lags behind, and traditional management mode has exposed many shortcomings in the middle of daily management.How the power cable in Construction and management city, has become the urgent problem of work at present.
Power cable plays a part very important in city operations, and being described as is the lifeline in city, to the height of underground cable management level, not only determines power supply reliability, but also determines municipal public safety.Because power cable is concealed work, basic data is especially aobvious important, but the current management to this respect is also relatively backward, and data is incomplete, searches inconvenience, inefficiency, there is the state of many data and on-the-spot grave fault, we also find in real work simultaneously, in view of the concrete actual conditions of cable laying, China is in the detection of underground cable, also there is very large defect in detection technique and utilization, be embodied in: the accuracy of cable detection and practicality also exist certain gap, the accuracy of cable detection also cannot meet the requirement of power supply reliability, for the actual working conditions (interference of domestic complexity, under water, bury winding, intensive overlap), lack corresponding technological means and position detection, these, also the standardized administration of cable generaI investigation and data message is caused to there is certain technical bottleneck.In addition, the production of distribution, operation and management also transfer to from original pole line pattern and enter ground mode based on cable, many management methods and measure are not followed up in time, greatly have impact on cable repairing and construction management, although applying of single generalized information system improves some shortcomings, ensure that the correctness of electric power topology, but be that data or function all require larger gap with the real work of cable; Along with Process of Urbanization Construction expanding day, the problems referred to above constantly accumulate expansion, and the contradiction between the shortage of ladder of management and management expectancy improve day by day is more and more serious.
Although the analytical calculation software that the two-dimensional design combination of main flow is relevant can solve the most of technical matterss in project of transmitting and converting electricity design substantially, but along with Urbanization in China ground is constantly accelerated, land resource is day by day in short supply, underground, semi-subterranean substation will be increased, line corridor becomes growing tension, to line route design become more meticulous require more and more higher; The widespread use of UHV AC/DC Transmission Technology is simultaneously had higher requirement for designing technique, designing technique needs to carry out once new change, it is short that cable work designs the design cycle comparatively speaking, the degree that becomes more meticulous is high, need to carry out information digitalization restructuring, the transmission of promotion information, thus the quality and the efficiency that fundamentally improve design.
The present situation of current electrical network is: each stage self-organizing systems such as cable work design, construction, maintenance, common requirement is had to engineering information between different system, but due to delineation of activities and platform construction not same period etc. reason, information is divided into isolated island one by one, cannot realize efficient information sharing.Because information repeats typing, not only increase extensive work, also reduce the correctness of information simultaneously.For current project of transmitting and converting electricity, the three-dimensional digitalization model that the design phase just progressively explores application only tentatively achieves information sharing in designing institute inside, the unrealized cross-platform with other system.The engineering information of other system also needs manual entry, and because equipment Foundations data volume is large, data integrity rate and parameter percentage of head rice 2 aspects also exist some problems in various degree.
Summary of the invention
Object of the present invention be exactly provide to overcome defect that above-mentioned prior art exists a kind of directly perceived accurately, the advanced three-dimensional design method based on cable work information model of platform.
Object of the present invention can be achieved through the following technical solutions:
Based on a three-dimensional design method for cable work information model, comprise the following steps:
1) according to present stage urban electric power cable and channel management in the subject matter that exists, and the drawback that conventional two-dimensional design exists in Practical Project, determines the application of cable work information model;
2) determine that cable work is set up, design and the demand of three phases of publishing picture, and obtain cable work information model realize object;
3) three-dimensional design platform is adopted to set up cable work information model according to master pattern storehouse and zone digit model bank;
4) carry out the three-dimensional design of cable work according to cable work information model in conjunction with construction of cable parameter, overhead cabling method and cable operational factor, finally obtain three-dimensional cable work design proposal.
Described step 3) specifically comprise the following steps:
31) urban electric power cable distribution geographical environment data are obtained by GIS;
32) position data of urban electric power cable distribution is obtained by GPS;
33) position data of urban electric power cable subway is obtained by BIM;
34) on three-dimensional design platform, cable work information model is built in conjunction with the position data of power cable distribution geographical environment data, cable distribution position data and underpass by three-dimensional modeling.
Described step 34) in three-dimensional design platform comprise Revit, Microstation Bentley, SLW3D, rich super TLD and Civil 3D.
Described step 3) in, zone digit model bank comprises building in selection area, the title in equipment and place, coordinate and elevation information.
Described step 3) in, master pattern storehouse comprises terminal station, tunnel, Gong Jing, shaft tower, comb, basis, cable termination, cable duct, insulator and lead model.
Described step 1) in, construction of cable parameter comprises conductor layer parameter, insulation course parameter, sheath parameter and outer jacket parameter.
Described conductor layer parameter comprises conductor material, diameter, nominal area and core structure, described insulation course parameter comprises insulating material, insulation thickness and insulation diameter, described sheath parameter comprises sheath material, wrinkle sheath, lining material and thickness, and described outer jacket parameter comprises armoring material and outer sheath material.
Described step 1) in, overhead cabling method comprise in air lay, soil lays and lays with comb.
Described step 1) in, cable operational factor comprises operational system parameter, feeder number, rated voltage, phase spacing, loop spacing, frequency of operation, environment temperature, conductor running temperature, protective metal shell running temperature, the critical temperature rise of soil, dry soil thermal resistivity and slowly drained soil thermal resistivity.
Compared with prior art, the present invention has the following advantages:
One, intuitively accurate: the present invention replaces two-dimentional drawing by the mode of three-dimensional modeling in the design process of cable work, effectively simplify design procedure, add the accuracy of design, solve in conventional two-dimensional layout design the problem being difficult to quick copy and convenient amendment, significantly improve labour productivity and engineering design quality, solve transmission and the problem of complex utilization of engineering information simultaneously.
Two, platform is advanced: by the investigation to Revit, Microstation Bentley, SLW3D, the large Mainstream Platform of rich super TLD, Civil3D five, after functional, operability, the Technological Economy cost of comparison software, recommend the three-dimensional design platform adopting AutoDesk Revit as cable work information model, AutoDesk Revit three-dimensional design platform can realize the various functions of cable transmission line engineering preferably, comprises collaborative design, the professional classification of cable transmission line, electrical equipment modeling, the modeling of civil engineering facility, collision detection and function etc. of publishing picture.
Accompanying drawing explanation
Fig. 1 is method flow diagram of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment:
As shown in Figure 1, a kind of three-dimensional design method based on cable work information model, comprises the following steps:
1) according to present stage urban electric power cable and channel management in the subject matter that exists, and the drawback that conventional two-dimensional design exists in Practical Project, determines the application of cable work information model;
2) determine that cable work is set up, design and the demand of three phases of publishing picture, and obtain cable work information model realize object;
Engineering establishing stage demand
At engineering establishing stage, first unit identifies project manager and each specialty is main establishes people, then establishes people to determine to participate in the designer of this engineering by each specialty is main.When using three-dimensional design means, setting a station server, this server creates this engineering name, how to determine that the authority of participation engineering staff at different levels is matter of utmost importance.Designer should have the database of corresponding access limit, the authority reading other people database is had with the designer of specialty and the designer of different majors, but there is no write permission, main authority of establishing people to have this professional designer of read-write database, but backstage record is had when write permission, project manager and engineer in charge have examination & verification authority, but do not revise authority etc.Focus on control of authority herein, how to make personnel at different levels can autonomous Design, freely inquire about and more conveniently puies forward money to other specialties, this is the direction of engineering establishing stage emphasis consideration.Secondly, at engineering establishing stage, also should comprise the establishment to element required in design process, have higher requirement to the basic parameter, relating attribute etc. of element here.
Design phase demand
In the design phase, mainly contain two problems difficult point.One is designer to the design setting model work of volume belonging to oneself and assigns a work; Two is put forward money problem, in engineering more loaded down with trivial details be exactly each specialty put forward money problem, electrically, structure, civil engineering, skill through etc. mutually put forward money between specialty, what specialty was inner puies forward money and the feedback after putting forward money mutually, arbitrary link is out of joint just easily causes the paper in engineering to leak, and will cause in the feedback of construction period and engineering loss.
To publish picture stage demand
In the stage of publishing picture, published picture vertical view and the sectional drawing of present stage, for different majors and comparatively somewhat complex design arrange also should have elevation drawing, wherein further comprises the schematic diagram of suspension and support and cable shaft in transformer station, publish picture so more complicated, consistance is not fine, all needs manual setting, which increase workload in mark.Three-dimensional design should embody the advantage of stereoscopic level, and energy robotization, intellectuality are published picture, and three-dimensional is published picture and can be carried out truncated models from all angles more easily, keeps good consistance, and automatically can carry out range marker when exceeding how many spacing.
3) adopt three-dimensional design platform to set up cable work information model according to master pattern storehouse and zone digit model bank, specifically comprise the following steps:
31) urban electric power cable distribution geographical environment data are obtained by GIS;
32) position data of urban electric power cable distribution is obtained by GPS;
33) position data of urban electric power cable subway is obtained by BIM;
34) on three-dimensional design platform, build cable work information model by three-dimensional modeling, step 34 in conjunction with the position data of power cable distribution geographical environment data, cable distribution position data and underpass) in three-dimensional design platform comprise Revit, Microstation Bentley, SLW3D, rich super TLD and Civil 3D;
Step 3) in, zone digit model bank comprises building in certain area, the title in equipment and place, coordinate and elevation information.
Step 3) in, master pattern storehouse comprises terminal station, tunnel, Gong Jing, shaft tower, comb, basis, cable termination, cable duct, insulator and lead model.
4) carry out the three-dimensional design of cable work according to cable work information model in conjunction with construction of cable parameter, overhead cabling method and cable operational factor, finally obtain three-dimensional cable work design proposal.
Step 4) in, construction of cable parameter comprises conductor layer parameter, insulation course parameter, sheath parameter and outer jacket parameter.
Conductor layer parameter comprises conductor material, diameter, nominal area and core structure, insulation course parameter comprises insulating material, insulation thickness and insulation diameter, sheath parameter comprises sheath material, wrinkle sheath, lining material and thickness, outer jacket parameter comprises armoring material and outer sheath material, overhead cabling method comprises in air and laying, soil lays and lays with comb, cable operational factor comprises operational system parameter, feeder number, rated voltage, phase spacing, loop spacing, frequency of operation, environment temperature, conductor running temperature, protective metal shell running temperature, the critical temperature rise of soil, dry soil thermal resistivity, slowly drained soil thermal resistivity.
Cable information model can be combined closely the reality of work of administration of power networks, the data characteristics of pay abundant attention underground cable, make it can not only provide various underground cable three-dimensional model, form, for decision-making, planning institute, and possess stronger analytic function (on calculating chart underground cable length, space querying, compare cable transfer capacity), in addition also have certain perspective.In cable management, cable information model should be able to realize following function:
(1) Computerized three-dimensional of aerial part and underground pipe network shows and roaming (equipment/part exact space layout location, can real time inspection position and measure distance size), there is two dimensional navigation figure function, conveniently, accurately locate three-dimensional display area, transparent, translucent, hiding, display three-dimensional model can be required according to difference.
(2) conversion of underground pipe network three-dimensional model and attribute data enter library facility.Power plant's superstructure and underground pipe network three-dimensional model are converted to system format; Will from different three-dimensional design system three-dimensional model attribute and implicit data, stored in database (SQLServer etc.) after conversion; There is data inputting interface, by relevant data input database, and the associating of fulfillment database and three-dimensional model.
(3) design drawing, data, parameter associate with three-dimensional model.Design phase design drawing (polar plot or raster pattern), design data, relevant parameters and the interrelated data of construction period, record (paper document scanning is electronic document) and three-dimensional model bi-directional association, can bidirectional inquiry.System provides the construction information of all kinds of pipe fitting and the management of completion information, the construction completion information of any pipe fitting can be checked, or belong to corresponding construction according to construction completion information information inspection to be completed whole pipe fittings of record, and according to construction completion information fast query, add up and publish picture.
(4) planimetric map, the pipeline material statistical form of cable work can be generated as requested, manage all kinds of maps etc.There is provided that cable length is calculated, the measuring and calculating of cable passage length of pipeline, the plane of graph data or solid space distance, pipe network arbitrfary point elevation, the pipeline section gradient and slope aspect in pipe network, point diagram inquiry, attribute location, conditional combination are inquired about and the function such as statistics.Also can generate meet national regulation transversal section, longitudinal profile and three dimension realistic stereographic map.Realize the function such as self-defined map sheet output of the information input of all kinds of special pipelines, pore, well lid etc., management, inquiry, each special pipelines, meet the needs of the planning of all kinds of pipeline of electrical network, maintenance, construction and management, for administration of power networks provides status information and each professional attributes information such as distribution, trend, buried depth of underground utilities accurately and reliably, the management of the installations and facilities of electrical network and construction can be made to realize efficient, reasonable and scientific, effectively improve work efficiency and the economic benefit of power plant.
(5) graph data (three-dimensional model) classification, multi-section display, output, the mutual retrieval of graph data and attribute data and synchronized update, ensure that three-dimensional model is consistent with attribute data, unified.
(6) underground pipe network is safeguarded and accident treatment function.The valve that need close of automatic search when there is booster event and best accident treatment scheme is provided.Visual construction or maintenance simulation can be carried out under three-dimensional environment.Formulation and the demonstration of visualized operation code can be carried out.
(7) adopt WEB technology, user can with common web browser the data information of direct access system, comprise graphic operation function easily, information searching function, Information Statistics function, Boolean query and figure positioning function etc.Browser end need not install any Add-ons.
The design of cable work information model should follow following principle:
(1) user oriented principle.System is set out with solving practical problems, meets the needs of electrical network underground installation daily management mission, and system is easy to operation.
(2) Supreme principle.The exploitation of system is based on higher level, and that utilize current maturation, advanced technology ensures the performance of system.Adopt three-dimensional visualization technique, database technology, browser technology.
(3) reliability principle.The hardware and software of system, coding scheme, each functional module has the leeway of expansion, and ensures to have suitable compatibility, stability.
(4) standardization, standardization principle.System by pushing away of mark design and development, and follows country, local Technical specifications and specification.
(5) software engineering method principle is followed.Software engineering method is followed in the exploitation of system, with the thought Design and implementation of through engineering approaches.
According to the characteristic that power transmission sequence specialty three-dimensional design and digitizing are transferred, need to become more meticulous modeling to design process, survey data need be reflected into model strictly according to the facts and then derive accurate construction drawing.Model transfers requirement for meeting digitizing simultaneously, all need with detailed parameter attribute to the structure in stringing engineering, cable work, facility, equipment etc.The requirement that functionally must meet design and transfer; For the operability aspect of software, applicability should be selected stronger, the functions such as the external calculating that software itself carries need constrain its due performance through factors such as authoritative department checkings; Technological Economy cost aspect, purchasing large-scale kit software according to node, module, design labor resource input aspect should enoughly be then principle.After detailed function, operability, Economic contrast, be recommended in power transmission specialty and adopt AutoDesk Revit three-dimensional design platform, to in the process of project megarelief, AutoDeskCivil 3D can be adopted to coordinate the mode of Revit to carry out three-dimensional design and digitizing transfer.
Electrical equipment modeling
Integrated power system information model is divided into logical model and physical model two parts.Wherein, logical model belongs to domain model, adopts object-oriented way to describe, and CIM15 version basis is cut out and supplemented form, and specific practice is as follows.
1) delete informational (Informative) bag and lower attached bag energy scheduling (EnergyScheduling), finance (Financial), marketing (MarketOperations), make a reservation for (Reservation).Reason is that these bag degree of ripeness are not high, is not inconsistent with practical business.
2) be that crucial non-electrical equipment creates power system resource (PowerSystemResource) subclass, as cable duct, work well etc.
3) device class class (AssetClassification) is created.
4) technical parameter class types (TechnicalParamType), technical parameter class (TechnicalParam) is created.
5) account Hierarchy nodes class (PSRLayer) is created.Logical model after cutting supplements reorganizes as 6 bags such as power network resources, asset equipment, Electricity customers, Topology connection, metrology resources and public supports.Wherein, power network resources bag to describe the logical device in electrical network for core with power system resource object (PowerSystemResource); Asset equipment bag with assets object (Asset) for core describes assets and the relation with logical device thereof; Electricity customers bag describes the relation between mains supply and client's electricity consumption; Topology connection bag describes the annexation in electrical network between conductive equipment; Public support bag provides tissue, position etc. for other classes of wrapping and global data type definition.Physical model adopts relation schema to carry out design database, for storage and the backup of implementation model data.Specific practice is as follows: map conversion one by one according to entity class, attribute and relation that logical model defines, directly reflect OO pattern by database relation pattern.Entity class is mapped as table, and best property of attribute mapping is field, one to one or many-one relationship be mapped as field, many-to-many relationship is mapped as table.
Cable electrical design cycle
Cable electrical design business mainly carries out cable electrical calculating, and Output rusults is comprise the input of the electric parameters such as current-carrying capacity, short-circuit current, induced voltage, output, calculating with reference to the calculated description of formula.Cable electrical design business comprises following several step:
(1) engineering catalogue is set up: take engineering as the electric calculating that index completes whole engineering.Engineering essential information comprises designing unit, engineering name, engineering code, design phase, Computed-torque control, date etc.
(2) construction of cable parameter is determined: select engineering structural parameters used, as electrically calculating underlying parameter.Construction of cable parameter comprises conductor layer, insulation course, sheath, each parameter of outer jacket.Wherein conductor layer mainly comprises the parameters such as conductor material, diameter, nominal area, core structure; Insulation course mainly comprises the parameters such as insulating material, insulation thickness, insulation diameter; Sheath mainly comprises the parameters such as sheath material, wrinkle sheath, lining material, thickness, and outer jacket mainly comprises the parameter such as armoring material, outer sheath material.
(3) overhead cabling method is determined: select the system of laying of cable, comprise in air lay, soil lays, comb lays.
(4) cable operational factor is determined: comprise operation conditions parameter and environmental conditions parameter.Wherein operation conditions parameter comprises operational system, feeder number, rated voltage, phase spacing, loop spacing, frequency of operation etc.Environmental baseline is relevant with overhead cabling method, and the environmental conditions parameter shared under all system of layings has environment temperature, conductor running temperature, protective metal shell running temperature; The distinctive parameter of soil system of laying has the critical temperature rise of soil, dry soil thermal resistivity, slowly drained soil thermal resistivity etc.
(5) according to setting parameter and selection, in conjunction with computation model, complete current-carrying capacity of cable calculating, calculation of short-circuit current, calculation of lightning induced voltage, and generate calculated description.
Revit working set is utilized to be applied in the middle of whole building structure model by the specific function of Revit parametric modeling instrument, thus the bi-directional association realized between widely used analysis and design program, realize the worksheet automatically obtained on structural model, for structural engineer is provided in the model of execution architecture analysis and design in Another Application, make structure drawing teacher can prepare all model views, engineering drawing, detail drawing and detail list document simultaneously.Realize designer when loading the file that slip-stick artist preserves recently, all design alterations that slip-stick artist makes model, corresponding information in all automatically updated designer's work, the multiple members realized in identical network share same model, and guarantee that everyone can carry out respective work without any confusion.A whole set of collaboration mode can meet the workflow demand-of project team thus timely synchronization of access Share Model flexibly, to being divided into several shared cell, then to being divided into the correlation model of one man operation.For design is offered help, and R and D design multiple engineered solution.
In cable work, direct-buried cable and comb requirement of engineering consider the situation of other municipal pipelines of underground, for transformer station's inner cable, then need the collision situation with other cables and equipment in the process considering that cable lays in station." collision detection " function of Revit, there is 3-D display intuitively, can user be helped rapidly and accurately to locate and revise the pel collided, also can derive conflict report simultaneously, generate the report text of HTML version, thus greatly improve efficiency and the correctness of pipeline layout, the design of project and construction quality are guaranteed.
In the process of carrying out collision detection, current position of collision can be located fast in the collision report generated, the generation of collision situation can be reduced more timely and effectively by the cooperation between specialty inside or specialty, and collision report can be upgraded after the adjustment fast, obtain the actual effect of collision adjustment.So not only can reduce owing to colliding the waste of manpower and the resource of doing over again and causing in work progress, all right effectively reduction of erection time, improve the quality of engineering.
In cable work, direct-buried cable and comb requirement of engineering consider the situation of other municipal pipelines of underground, for transformer station's inner cable, then need the collision situation with other cables and equipment in the process considering that cable lays in station." collision detection " function of Revit, there is 3-D display intuitively, can user be helped rapidly and accurately to locate and revise the pel collided, also can derive conflict report simultaneously, generate the report text of HTML version, thus greatly improve efficiency and the correctness of pipeline layout, the design of project and construction quality are guaranteed.
In the process of carrying out collision detection, current position of collision can be located fast in the collision report generated, the generation of collision situation can be reduced more timely and effectively by the cooperation between specialty inside or specialty, and collision report can be upgraded after the adjustment fast, obtain the actual effect of collision adjustment.So not only can reduce owing to colliding the waste of manpower and the resource of doing over again and causing in work progress, all right effectively reduction of erection time, improve the quality of engineering.
The present invention is based on the overall background of project of transmitting and converting electricity Design of digital and the research of electricity power engineering design information model construction techniques, carry out the design information model investigation of cable work, by realizing applying design information modelling technique and Three-dimensional Design Technique in cable line engineering, solve present stage urban electric power cable and channel management in the subject matter that exists, and the drawback that conventional two-dimensional design exists in Practical Project, improve quality and the efficiency of engineering construction.Be summarized as follows:
(1) cable information model is from conceptual design, basic engineering, detailed design, buying, construction, operation, maintenance, dilatation/transform/lengthen the life to retired whole Plant lifecycle, can high efficiency, low cost, and carry out while quickness and high efficiency, more low-risk can be provided the means of the design of various scale cable work, construction and operation, also compatible Other Engineering application software simultaneously.
(2) cable information model can be combined closely the reality of work of administration of power networks, the data characteristics of pay abundant attention underground cable, make it can not only provide various underground cable three-dimensional model, form, for decision-making, planning institute, and possess stronger analytic function (on calculating chart underground cable length, space querying, compare cable transfer capacity), in addition also have certain perspective.
(3) design of cable work information model should follow following principle: user oriented principle, Supreme principle, reliability principle, standardization and normalization principle, follow software engineering method principle.
(4) really to realizing Digital Three-Dimensional design to transferring overall process, needing to carry out that master pattern storehouse is set up, zone digit model is set up, standardization three-dimensional digital design system is set up, the research of comprehensive utilization five aspect of Design of digital responsibility system and digital model.
(5) by the investigation to Revit, Microstation Bentley, SLW3D, the large Mainstream Platform of rich super TLD, Civil 3D five, after functional, operability, the Technological Economy cost of comparison software, recommend the three-dimensional design platform adopting AutoDeskRevit as cable work information model.
(6) AutoDesk Revit three-dimensional design platform can realize the various functions of cable transmission line engineering preferably, comprises collaborative design, the professional classification of cable transmission line, electrical equipment modeling, the modeling of civil engineering facility, collision detection and function etc. of publishing picture.
Claims (9)
1. based on a three-dimensional design method for cable work information model, it is characterized in that, comprise the following steps:
1) application of cable work information model is determined;
2) determine that cable work is set up, design and the demand of three phases of publishing picture, and obtain cable work information model realize object;
3) three-dimensional design platform is adopted to set up cable work information model according to master pattern storehouse and zone digit model bank;
4) carry out the three-dimensional design of cable work according to cable work information model in conjunction with construction of cable parameter, overhead cabling method and cable operational factor, finally obtain three-dimensional cable work design proposal.
2. a kind of three-dimensional design method based on cable work information model according to claim 1, is characterized in that, described step 3) specifically comprise the following steps:
31) urban electric power cable distribution geographical environment data are obtained by GIS;
32) position data of urban electric power cable distribution is obtained by GPS;
33) position data of urban electric power cable subway is obtained by BIM;
34) on three-dimensional design platform, cable work information model is built in conjunction with the position data of power cable distribution geographical environment data, cable distribution position data and underpass by three-dimensional modeling.
3. a kind of three-dimensional design method based on cable work information model according to claim 2, it is characterized in that, described step 34) in three-dimensional design platform comprise Revit, Microstation Bentley, SLW3D, rich super TLD and Civil 3D.
4. a kind of three-dimensional design method based on cable work information model according to claim 1, it is characterized in that, described step 3) in, zone digit model bank comprises building in selection area, the title in equipment and place, coordinate and elevation information.
5. a kind of three-dimensional design method based on cable work information model according to claim 1, it is characterized in that, described step 3) in, master pattern storehouse comprises terminal station, tunnel, Gong Jing, shaft tower, comb, basis, cable termination, cable duct, insulator and lead model.
6. a kind of three-dimensional design method based on cable work information model according to claim 1, is characterized in that, described step 4) in, construction of cable parameter comprises conductor layer parameter, insulation course parameter, sheath parameter and outer jacket parameter.
7. a kind of three-dimensional design method based on cable work information model according to claim 6, it is characterized in that, described conductor layer parameter comprises conductor material, diameter, nominal area and core structure, described insulation course parameter comprises insulating material, insulation thickness and insulation diameter, described sheath parameter comprises sheath material, wrinkle sheath, lining material and thickness, and described outer jacket parameter comprises armoring material and outer sheath material.
8. a kind of three-dimensional design method based on cable work information model according to claim 1, is characterized in that, described step 4) in, overhead cabling method comprise in air lay, soil lays and lays with comb.
9. a kind of three-dimensional design method based on cable work information model according to claim 1, it is characterized in that, described step 4) in, cable operational factor comprises operational system parameter, feeder number, rated voltage, phase spacing, loop spacing, frequency of operation, environment temperature, conductor running temperature, protective metal shell running temperature, the critical temperature rise of soil, dry soil thermal resistivity and slowly drained soil thermal resistivity.
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