CN113656857A - Method for automatically generating stringing construction scheme - Google Patents
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Abstract
The invention discloses a method for automatically generating an overhead line construction scheme, which comprises the following steps: s1, establishing a three-dimensional terrain model through the survey data, and establishing a working condition model on the three-dimensional terrain model; s2, importing the standard working condition data into the working condition model, determining construction data according to the actual working condition data, and generating a stringing construction scheme; s3, adjusting the disaster model data to verify the robustness of the established stringing construction scheme, generating restoration parameters according to the loss corresponding to different disaster grades, and executing S2 to readjust the working condition model; after the robustness is qualified, executing S4; and S4, inputting the actual working condition data and the construction data into the tool library model, and generating the corresponding number of the prepared tools. The construction data are automatically generated by calculating the calculation data items and the calculation rules of all the construction parts, the robustness of the formulated stringing construction scheme is verified, the list of construction devices is automatically derived, and the design efficiency of the stringing construction scheme is improved.
Description
Technical Field
The invention relates to the technical field of computer software modeling, in particular to a method for automatically generating a stringing construction scheme.
Background
The important crossing of the power transmission line refers to the situation that three-span construction occurs in the engineering construction of the power transmission line, and comprises the situation that the overhead power transmission line crosses a high-speed railway, a highway and an important power transmission channel section. The non-power-off spanning without the spanning frame is one of the items with the highest safety factor and the highest difficulty in manufacturing the scheme. In the process of establishing the non-power-off crossing scheme of the non-crossing frame, parameters of the insulated rope net and the bearing rope in the net sealing crossing process, stress and safety factors in the construction process are calculated according to the landform of a construction site, physical parameters of a crossed object and geographic parameters of a crossing gear and strictly according to crossing construction guide rules, and the requirements of safety regulations are met through checking. In the traditional crossing construction scheme, electric power personnel plan the whole scheme after measuring data on site, and the construction scheme is displayed in a two-dimensional drawing form; because the erection difficulty and the safety stability of the electric power iron tower are greatly influenced by the landform, the factors such as the landform and the landform are difficult to be taken into the integral scheme by actual engineering personnel for comprehensive consideration; meanwhile, the disaster resistance of the electric power iron tower is difficult to evaluate according to the existing experience, so that the construction period of the electric power iron tower is long and the erection cost is high. Meanwhile, the erection period of the electric power iron tower is long, so that a plurality of devices are involved, and a constructor cannot estimate a device list required actually.
Disclosure of Invention
The invention aims to solve the problem of low design efficiency of the traditional power tower erection construction scheme, and provides a method for automatically generating an overhead line construction scheme.
In order to achieve the technical purpose, the invention provides a technical scheme that a method for automatically generating an overhead line construction scheme comprises the following steps:
s1, establishing a three-dimensional terrain model through the survey data, and establishing a working condition model on the three-dimensional terrain model; the working condition model comprises an electric power tower model and a tower footing model;
s2, importing the standard working condition data into the working condition model, determining construction data according to the actual working condition data, and generating a stringing construction scheme;
s3, adjusting the disaster model data to verify the robustness of the established stringing construction scheme, generating restoration parameters according to the loss corresponding to different disaster grades, and executing S2 to readjust the working condition model; after the robustness is qualified, executing S4;
and S4, inputting the actual working condition data and the construction data into the tool library model, and generating the corresponding number of the prepared tools.
In the scheme, GIS three-dimensional software is adopted for modeling, topographic and geomorphic data are obtained through an unmanned aerial vehicle, geological data are obtained through geological survey personnel, a three-dimensional virtual topographic model is generated, the topographic model comprises parameters such as elevation, soil texture and the like and serves as reference factors for building a tower foundation model, the number of power towers is set according to overall planning on the built topographic model, a working condition model is built according to a geographical coordinate position, the building standard of the working condition model depends on a construction standard and topographic and geomorphic data, after the power tower model is built, the construction of an overhead line is carried out according to the attribute data of the power towers, different specified overhead lines are selected, each parameter of the overhead line is measured to ensure the construction standardization, a robustness test is required according to the model built according to the construction scheme, certain disaster resistance is required, theoretical basis and guarantee are provided for actual construction, and establishing a disaster model in GIS three-dimensional software, testing according to the type and the grade of the disaster, comparing with standard data respectively, and further correcting the working condition parameters of each construction part to obtain a correction value so as to ensure the integrity and the safety of the construction scheme.
Preferably, the standard working condition data comprises a tower body attribute, a connection medium attribute and an adjacent attribute; the tower body attributes include: elevation of tower footing, tower positioning and height calling, and hardware string length; the connection medium properties comprise a wire specific gravity and a line corner; the adjacency attribute includes: span, object-strided height, and crossover angle.
Preferably, the actual working condition data is the working condition data with the terrain taken into consideration, and all attribute data in the working condition data can be adaptively adjusted according to actual engineering requirements.
Preferably, the step of determining the construction data according to the actual working condition data comprises the following steps: and setting a corresponding calculation formula according to the calculation data items and the calculation rules of all the construction positions, and importing actual working condition data for calculation to determine corresponding construction data.
Preferably, the calculation of the construction data comprises the following key items: and calculating the height of a wire point, the height difference of the wire, the radian of a suspension angle, the angle of the suspension angle, the total suspension angle of the front side and the rear side of each power tower, the vertical span of the front side and the rear side, the total vertical span, the vertical load of a paying-off tackle, the envelope angle of the paying-off tackle and the tension of the wire according to the type of the wire.
Preferably, S3 includes the steps of:
the disaster model comprises earthquake disasters, rain and snow disasters and typhoon disasters, different disaster types are respectively divided into T1 grade, T2 grade and T3 grade according to disaster grades, and the disaster grades are T3, T2 and T1 from large to small;
and setting disaster grades according to different disaster types in sequence to perform disaster simulation on the established stringing construction scheme, extracting loss data of each construction part, comparing the loss data with loss values of the construction parts in the standard library at the disaster grades of different disaster types, generating a correction value under the current disaster simulation, and further correcting the working condition parameters of unqualified construction parts.
Preferably, the generating of the corresponding number of preparatory tools comprises the steps of:
determining the number of power towers according to the terrain data and the span; determining the tower footing elevation according to the topographic features;
calculating the height of a wire point, the height difference of the wire and the tension of the wire according to the basic data of adjacent power towers and the attribute of a connecting medium;
further calculating a suspension angle radian, a suspension angle and the total suspension angle of the front side and the rear side of each power tower according to the height of the wire point, the height difference of the wire and the tension of the wire;
further calculating to obtain the total vertical span, the vertical load of the paying-off tackle and the enveloping angle of the paying-off tackle;
determining the number of the required pulleys according to the sum of the vertical span, the vertical load of the paying-off pulley and the envelope angle of the paying-off pulley; and determining the number of the required tractors, tensioners, traction ropes, steel wire ropes, pulleys and connectors according to the number of the pulleys and the number of the electric power towers.
The invention has the beneficial effects that: according to the method for automatically generating the overhead line construction scheme, the working condition model is established through the three-dimensional modeling software, the calculation data items and the calculation rules of all construction parts are led into the model, the building of the model and the arrangement of overhead lines are guided and perfected, the built model is subjected to robustness test through the disaster model, the construction specification and the safety and reliability of the built model are guaranteed, the complete construction scheme and the device list required by construction are led out through the model, and the construction safety and efficiency are remarkably improved.
Drawings
Fig. 1 is a flow chart of a method of automatically generating a stringing construction scheme according to the present invention.
Detailed Description
For the purpose of better understanding the objects, technical solutions and advantages of the present invention, the following detailed description of the present invention with reference to the accompanying drawings and examples should be understood that the specific embodiment described herein is only a preferred embodiment of the present invention, and is only used for explaining the present invention, and not for limiting the scope of the present invention, and all other embodiments obtained by a person of ordinary skill in the art without making creative efforts shall fall within the scope of the present invention.
Example (b): as shown in fig. 1, a flow chart of a method for automatically generating an overhead line construction scheme includes the following steps:
s1, establishing a three-dimensional terrain model through the survey data, and establishing a working condition model on the three-dimensional terrain model; the working condition model comprises an electric power tower model and a tower footing model;
s2, importing the standard working condition data into the working condition model, determining construction data according to the actual working condition data, and generating a stringing construction scheme;
the standard working condition data comprises tower body attributes, connection medium attributes and adjacent attributes; the tower body attributes include: elevation of tower footing, tower positioning and height calling, and hardware string length; the connection medium properties comprise a wire specific gravity and a line corner; the adjacency attribute includes: span, object-strided height and span angle;
the actual working condition data is the working condition data after the terrain is considered, and all attribute data in the working condition data can be adaptively adjusted according to actual engineering requirements.
The construction data are determined according to the actual working condition data, and the method comprises the following steps: and setting a corresponding calculation formula according to the calculation data items and the calculation rules of all the construction positions, and importing actual working condition data for calculation to determine corresponding construction data.
The calculation of the construction data comprises the following key items: and calculating the height of a wire point, the height difference of the wire, the radian of a suspension angle, the angle of the suspension angle, the total suspension angle of the front side and the rear side of each power tower, the vertical span of the front side and the rear side, the total vertical span, the vertical load of a paying-off tackle, the envelope angle of the paying-off tackle and the tension of the wire according to the type of the wire.
S3, adjusting the disaster model data to verify the robustness of the established stringing construction scheme, generating restoration parameters according to the loss corresponding to different disaster grades, and executing S2 to readjust the working condition model; after the robustness is qualified, executing S4; the method comprises the following substeps:
the disaster model comprises earthquake disasters, rain and snow disasters and typhoon disasters, different disaster types are respectively divided into T1 grade, T2 grade and T3 grade according to disaster grades, and the disaster grades are T3, T2 and T1 from large to small;
and setting disaster grades according to different disaster types in sequence to perform disaster simulation on the established stringing construction scheme, extracting loss data of each construction part, comparing the loss data with loss values of the construction parts in the standard library at the disaster grades of different disaster types, generating a correction value under the current disaster simulation, and further correcting the working condition parameters of unqualified construction parts.
S4, inputting actual working condition data and construction data into a tool library model to generate the corresponding number of prepared tools; the method comprises the following substeps:
determining the number of power towers according to the terrain data and the span; determining the tower footing elevation according to the topographic features;
calculating the height of a wire point, the height difference of the wire and the tension of the wire according to the basic data of adjacent power towers and the attribute of a connecting medium;
further calculating a suspension angle radian, a suspension angle and the total suspension angle of the front side and the rear side of each power tower according to the height of the wire point, the height difference of the wire and the tension of the wire;
further calculating to obtain the total vertical span, the vertical load of the paying-off tackle and the enveloping angle of the paying-off tackle;
determining the number of the required pulleys according to the sum of the vertical span, the vertical load of the paying-off pulley and the envelope angle of the paying-off pulley; and determining the number of the required tractors, tensioners, traction ropes, steel wire ropes, pulleys and connectors according to the number of the pulleys and the number of the electric power towers.
In the embodiment, GIS three-dimensional software is adopted for modeling, topographic and geomorphic data are obtained through an unmanned aerial vehicle, geological data are obtained through geological survey personnel, a three-dimensional virtual topographic model is generated, the topographic model comprises parameters such as elevation, soil texture and the like and serves as reference factors for building a tower foundation model, the number of power towers is set according to general planning on the built topographic model, working condition models are built according to geographic coordinate positions, the building standard of the working condition models depends on construction standards and topographic and geomorphic data, after the power towers are built, the construction of overhead lines is carried out according to the attribute data of the power towers, different specified overhead lines are selected, all parameters of the overhead lines are measured to ensure the construction standardization, the model which is built according to a construction scheme needs to be subjected to a robustness test and needs to have certain disaster resistance, theoretical basis and guarantee are provided for actual construction, and establishing a disaster model in GIS three-dimensional software, testing according to the type and the grade of the disaster, comparing with standard data respectively, and further correcting the working condition parameters of each construction part to obtain a correction value so as to ensure the integrity and the safety of the construction scheme.
The calculation of the construction data comprises the following key item calculation, and the calculation rule and the formula are as follows:
the calculation formula of the wire point height h is as follows:
hi＝ti+di+r-li
wherein h is the height of the wire point; t is the tower footing elevation (given); d, tower positioning and height calling (given); l, hardware string length (given); i, corresponding power tower pile number; and r is the positioning height difference.
Height difference n formula:
n＝hi+1-hi
n is height difference; h is the height of the wire point.
Envelope angle of paying-off tackle
α＝αA+αB
Paying off side wire tension:
wherein, FxThe tension of the side wire of the paying-off of the power tower; fy: tension of a traction side conductor of the electric tower; fi-1y: the tension of the paying-off side conductor of the previous base power tower; u is a damping coefficient; z: the number of pulleys.
Tension of the traction side wire:
wherein, PiDrawing the tension of the side wire; m is the span; n is height difference; and chi is the specific gravity of the lead.
Suspension angle radian:
wherein, α: a suspension angle radian; χ: the specific gravity of the lead is kg/m; m is the span; f, the tension of the lead; and n is height difference.
Total suspension angle of front and rear sides of each tower:
oi＝θai+θbi
wherein o is the total suspension angle of the front side and the rear side of each tower; i, the serial number corresponding to the pile number of the power tower; theta is the angle of the suspension angle; a, the front side of the tower; b, the rear side of the tower.
Vertical span at the paying-off side:
wherein: r isxThe vertical span at the paying-off side.
Traction side vertical span:
wherein: r isyThe traction side is vertical to the span.
Vertical span total (wire hang length-arc length from lowest point to adjacent hang point of wire hang curve):
ji＝rx+ry
wherein: j is the sum of vertical span; r isxThe front side is vertical span; r isyThe rear side is vertical span.
And (3) paying off pulley vertical load:
Ni＝χirxvi+χiryvi
wherein: n: paying off the vertical load of the tackle; v. number of thread rope splits.
Comprehensive load of the paying-off tackle:
wherein: k, paying off the comprehensive load of the tackle; n: paying off the vertical load of the tackle; χ: the specific gravity of the wire; v is the number of cord splits; epsilon is the line corner.
The above-mentioned embodiments are preferred embodiments of the method for automatically generating a stringing construction scheme according to the present invention, and the scope of the present invention is not limited thereto, and includes the equivalent variations of the shape and structure according to the present invention.
Claims (7)
1. A method for automatically generating an overhead line construction scheme is characterized by comprising the following steps:
s1, establishing a three-dimensional terrain model through the survey data, and establishing a working condition model on the three-dimensional terrain model; the working condition model comprises an electric power tower model and a tower footing model;
s2, importing the standard working condition data into the working condition model, determining construction data according to the actual working condition data, and generating a stringing construction scheme;
s3, adjusting the disaster model data to verify the robustness of the established stringing construction scheme, generating restoration parameters according to the loss corresponding to different disaster grades, and executing S2 to readjust the working condition model; after the robustness is qualified, executing S4;
and S4, inputting the actual working condition data and the construction data into the tool library model, and generating the corresponding number of the prepared tools.
2. The method of automatically creating a stringing construction solution as claimed in claim 1,
the standard working condition data comprises tower body attributes, connection medium attributes and adjacent attributes; the tower body attributes include: elevation of tower footing, tower positioning and height calling, and hardware string length; the connection medium properties comprise a wire specific gravity and a line corner; the adjacency attribute includes: span, object-strided height, and crossover angle.
3. The method for automatically creating a stringing construction solution according to claim 1 or 2,
the actual working condition data is the working condition data after the terrain is considered, and all attribute data in the working condition data can be adaptively adjusted according to actual engineering requirements.
4. The method of automatically creating a stringing construction solution as claimed in claim 3,
the construction data are determined according to the actual working condition data, and the method comprises the following steps: and setting a corresponding calculation formula according to the calculation data items and the calculation rules of all the construction positions, and importing actual working condition data for calculation to determine corresponding construction data.
5. The method of automatically creating a stringing construction solution as claimed in claim 4,
the calculation of the construction data comprises the following key items: and calculating the height of a wire point, the height difference of the wire, the radian of a suspension angle, the angle of the suspension angle, the total suspension angle of the front side and the rear side of each power tower, the vertical span of the front side and the rear side, the total vertical span, the vertical load of a paying-off tackle, the envelope angle of the paying-off tackle and the tension of the wire according to the type of the wire.
6. The method for automatically creating a stringing construction solution according to claim 1 or 2,
s3 includes the steps of:
the disaster model comprises earthquake disasters, rain and snow disasters and typhoon disasters, different disaster types are respectively divided into T1 grade, T2 grade and T3 grade according to disaster grades, and the disaster grades are T3, T2 and T1 from large to small;
and setting disaster grades according to different disaster types in sequence to perform disaster simulation on the established stringing construction scheme, extracting loss data of each construction part, comparing the loss data with loss values of the construction parts in the standard library at the disaster grades of different disaster types, generating a correction value under the current disaster simulation, and further correcting the working condition parameters of unqualified construction parts.
7. The method of automatically creating a stringing construction solution as claimed in claim 5,
generating the corresponding number of preparation tools comprises the steps of:
determining the number of power towers according to the terrain data and the span; determining the tower footing elevation according to the topographic features;
calculating the height of a wire point, the height difference of the wire and the tension of the wire according to the basic data of adjacent power towers and the attribute of a connecting medium;
further calculating a suspension angle radian, a suspension angle and the total suspension angle of the front side and the rear side of each power tower according to the height of the wire point, the height difference of the wire and the tension of the wire;
further calculating to obtain the total vertical span, the vertical load of the paying-off tackle and the enveloping angle of the paying-off tackle;
determining the number of the required pulleys according to the sum of the vertical span, the vertical load of the paying-off pulley and the envelope angle of the paying-off pulley; and determining the number of the required tractors, tensioners, traction ropes, steel wire ropes, pulleys and connectors according to the number of the pulleys and the number of the electric power towers.
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Cited By (1)
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| CN110969337A (en) * | 2019-10-29 | 2020-04-07 | 国网浙江省电力有限公司 | Automatic generation method and system for stringing construction scheme |
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