CN110580564A - Method for assisting in acceptance of line engineering completion by three-dimensional design result of power transmission line - Google Patents
Method for assisting in acceptance of line engineering completion by three-dimensional design result of power transmission line Download PDFInfo
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Abstract
A method for assisting line engineering completion acceptance of a three-dimensional design result of a power transmission line comprises the steps of outputting a cost tool by adopting a three-dimensional design model of the power transmission and transformation engineering, and forming a calculation rule base, a list quota matching base and a cost information funding standard by combining a calculation rule of a civil engineering major of a power construction engineering and information requirements of electric installation and information funding of a power transmission line major; adopting a laser radar detection technology, scanning by utilizing a laser radar to generate point cloud data, and performing three-dimensional live-action modeling on the line corridor terrain; converting the laser radar three-dimensional line model through comparison, and overlaying the laser radar three-dimensional line model to a three-dimensional design result; and (3) researching the detection calculation of the safety distance between the ground object and the wire in the line corridor, analyzing clearance distance and cross crossing inspection items in the line corridor, and determining whether the transmission line project meets the acceptance requirement. The invention utilizes the laser radar technology to assist the line acceptance inspection, and provides a faster, efficient and scientific means for the acceptance of the power transmission line.
Description
Technical Field
The invention relates to a method for completing and accepting a power grid line project, in particular to a method for completing and accepting a power transmission line three-dimensional design result auxiliary line project.
Background
The national grid company provides a strong intelligent power grid which accelerates the construction of the strong intelligent power grid, takes an extra-high voltage power grid as a backbone grid, coordinately develops all levels of power grids, and is characterized by informatization, automation and interaction, and the construction of the strong intelligent power grid provides higher requirements for the life cycle management of the power transmission and transformation project.
At present, the world is experiencing the second wave of informatization with data as the core and the Internet as the means, and society is turning from IT (information technology) era to DT (data technology) era. With the rapid development of the digitization technology, various industries in society develop digitization construction work and obtain certain effects. The arrival of the digital era brings opportunities and challenges to the development of power enterprises, applies the prior digital technology to the whole life cycle management, and improves the economic benefit and the core competitiveness of the digital technology.
The development and construction of the power grid need to be carried out by utilizing the existing power grid resources, the related problems influencing the power grid planning are deeply researched and scientifically planned, the resource optimization capability and the safe bearing capability of the power grid are improved, and the method is an important premise for ensuring the safe and reliable operation of the power grid in China. In the face of new energy power grid construction and power grid scale expansion, the existing power grid management mode cannot well meet the requirement of data resource support in power grid construction, a novel power grid management mode which is based on a digital technology and aims at a power grid full life cycle management idea is provided, and the method has great significance for improving the production efficiency of each stage of a power grid.
at present, the national grid company has clearly proposed the power transmission and transformation project to carry out digital three-dimensional design, and the digital three-dimensional design is taken as a leading stage of the whole life cycle of the power transmission and transformation project, and has great significance for the accumulation of the digital basic data of the power transmission and transformation project. The three-dimensional design result of the power transmission and transformation project generated in the design stage can be used only in the process of project construction. However, in the current power transmission and transformation project construction management process, the traditional means is often adopted for management, and the three-dimensional design result generated in the design stage cannot be applied. Therefore, it is especially necessary to develop engineering construction application research of three-dimensional design results of power transmission and transformation engineering.
At present, the following problems exist in the quality acceptance of transmission line engineering:
First, because the time limit for a project is nervous, receive each link influence, the time limit for a project is often arranged to the line construction cycle of falling for the construction progress, in order to prevent that the nightly dreams many construction units are often under construction night, also dredges the self-checking to some processes, the mistake appears very easily. Some hidden project acceptance is only walking away, and sometimes, the tower is erected and the line is released under the condition that the curing period of the basic concrete is insufficient.
secondly, the quality of the transmission line engineering quality acceptance personnel is different, and the electric power practitioners with more exquisite services cannot be guaranteed, so that the accuracy of the acceptance result is affected, and the transmission line engineering quality cannot be correctly evaluated. As the number of the inspection personnel for the engineering quality of the transmission line is only 3-5, and the structure of the inspection personnel is biased towards aging and retirement and reduction personnel, the work load of the per-capita inspection reaches 75 km/month. Meanwhile, about 200km of lines are put into operation every year, and the per-capita workload is increased or decreased. In order to achieve the aim of 'zero external force damage' of the company line, operators put a great deal of effort into the work of preventing the external force damage, and teams and groups are difficult to arrange the operators to participate in the line acceptance work.
Third, the "spot check" model is a gap from the company "fine" management requirements. Under original transmission line acceptance mode, the circuit acceptance is more extensive, adopts the spot check mode to the circuit when generally accepting, and the limitation is in people's running, eye seeing, handwriting, adopts the method of single subjective evaluation acceptance simultaneously, does not accomplish careful deep inspection to the engineering, probably brings numerous safety defect and hidden danger from this.
fourthly, in the cost management of the power transmission and transformation project, the civil engineering of the transformer substation has high difficulty in calculating the project amount and large workload, and in the electrical and power transmission line professions of the transformer substation, technical staff fill in the project amount, screen matching lists and quota items have very many repetitive work, so that the cost management work consumes long time.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a method for assisting in acceptance of line engineering by using a three-dimensional design result of a power transmission line, which assists in acceptance of line engineering by using the three-dimensional design result of the power transmission line, controls manufacturing costs by using the three-dimensional design result, improves project management effects, and provides a faster, more efficient and more scientific means for acceptance of the power transmission line by changing a traditional acceptance mode in a spot check mode and assisting in line acceptance check by using a laser radar technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
The method for assisting in line engineering completion acceptance of the three-dimensional design result of the power transmission line is characterized by comprising the following steps of: 1. the construction cost tool is output by adopting a three-dimensional design model of the power transmission and transformation project, and a calculation rule base, a list quota matching base and a construction cost information funding standard are formed by combining the calculation amount rule of the civil engineering major of the power construction project and the information funding requirements of the electrical installation and the power transmission line major, so that the accurate and rapid calculation of the project amount is realized; 2. adopting a laser radar detection technology, scanning by using an unmanned aerial vehicle carrying a laser radar to generate point cloud data, and performing high-precision three-dimensional live-action modeling on the line corridor terrain; 3. converting the laser radar three-dimensional line model by comparing the difference between the laser radar three-dimensional line model and the three-dimensional design result model, and overlaying the converted laser radar three-dimensional line model to the three-dimensional design result; 4. and (4) researching detection calculation of the safety distance between the ground object and the wire in the line corridor by combining the acceptance standard requirement, analyzing clearance distance and cross spanning inspection items in the line corridor, and determining whether the transmission line project meets the acceptance requirement.
The three-dimensional live-action modeling of the step 2 is mainly realized by the steps of data preprocessing, point cloud data processing, DEM, DSM and DOM manufacturing, result data quality inspection and point cloud live-action model construction, wherein the data preprocessing aims to obtain the space coordinates and the external orientation elements of the laser point cloud data; the purpose of the point cloud data processing is to obtain effective point cloud data and guarantee the accuracy of the point cloud live-action model; DEM, DSM and DOM are manufactured to produce visualized positive image data; the quality inspection of the result data is to verify the compliance of the data; and performing visual application on the processed data to form a point cloud model and visually reflect the real scene condition of the project.
The superposition method of the step 3 comprises the following first step: extracting three-dimensional design result data, and uniformly sampling the three-dimensional design result at proper density to obtain target geometric characteristic data; the second step is that: a third step of using laser radar scanning equipment to carry out three-dimensional measurement on the engineering and acquiring three-dimensional scanning point cloud data: extracting characteristics, namely preprocessing the scanning point cloud to obtain necessary effective data in the registration process; the fourth step: and (3) superposition matching, namely superposing the three-dimensional laser radar scanning point cloud and the three-dimensional design result data to achieve the best fitting, wherein the superposition process comprises two steps, namely rough superposition and accurate superposition.
The rough superposition step reduces the pose deviation between the scanning point cloud of the laser radar and the three-dimensional design result as much as possible to achieve an approximate fitting state; the precise superposition operation of the second stage is generally carried out on the basis of the rough superposition, and the aim is to ensure that the scanning point cloud of the laser radar and the three-dimensional design result are in the best fitting state through a precise superposition algorithm.
In the precise superposition step, an Iterative Closest Point (ICP) algorithm is used.
Has the advantages that:
(1) The electronization, digitalization and visualization of the construction management of the power transmission and transformation project are realized, and a visual, real-time and effective auxiliary tool is provided for a project manager.
(2) The three-dimensional design achievement is applied to completion acceptance of power transmission line engineering, the three-dimensional scene of a line corridor is visually displayed, new digital application requirements are met, and the management concept and the technical application of the three-dimensional design achievement gradually meet the requirements of power transmission and transformation engineering development. The method plays a significant role in visualization, fine display and application of the three-dimensional scene of the power transmission and transformation project.
(2) Innovative transmission line completion acceptance mode
Through the research on the application of the laser radar scanning technology for assisting the line completion acceptance, the high-precision three-dimensional coordinates of the surface objects in the wire and the corridor environment can be obtained, the coordinate data is utilized to rapidly and accurately vector the wire, and the distance between the wire and the surface objects is calculated, so that the safe distance of the wire is detected, the traditional human running, eye viewing and handwriting modes are changed, and a quicker, more scientific and more efficient inspection mode is provided for the completion acceptance of the power transmission line.
(3) The quality and the efficiency of the completion acceptance of the power transmission line are improved, and the safe and stable operation of the line engineering is ensured
Airborne laser radar scanning has characteristics such as efficient, of high quality, it is little influenced by topographic condition, can obtain the ground point cloud data of large tracts of land high accuracy and high resolution's digital image fast, realize that the true three-dimensional model of transmission line is rebuild, can be used to the three-dimensional data measurement of any point in the line passageway, especially bring apparent improvement to the check and accept work such as circuit cross-over, vegetation, building safe distance, make transmission line check and accept staff know the condition of whole transmission line more accurately, and then realize the three-dimensional visual management to transmission line, improve the operating quality and the efficiency of completing the check and accept, ensure safe and stable operation after the line engineering is put into operation.
Detailed Description
The method for assisting in line engineering completion acceptance of the three-dimensional design result of the power transmission line comprises the following steps: 1. the construction cost tool is output by adopting a three-dimensional design model of the power transmission and transformation project, and a calculation rule base, a list quota matching base and a construction cost information funding standard are formed by combining the calculation amount rule of the civil engineering major of the power construction project and the information funding requirements of the electrical installation and the power transmission line major, so that the accurate and rapid calculation of the project amount is realized; 2. adopting a laser radar detection technology, scanning by using an unmanned aerial vehicle carrying a laser radar to generate point cloud data, and performing high-precision three-dimensional live-action modeling on the line corridor terrain; 3. converting the laser radar three-dimensional line model by comparing the difference between the laser radar three-dimensional line model and the three-dimensional design result model, and overlaying the converted laser radar three-dimensional line model to the three-dimensional design result; 4. and (4) researching detection calculation of the safety distance between the ground object and the wire in the line corridor by combining the acceptance standard requirement, analyzing clearance distance and cross spanning inspection items in the line corridor, and determining whether the transmission line project meets the acceptance requirement.
The three-dimensional live-action modeling is mainly realized by the steps of data preprocessing, point cloud data processing, DEM (digital elevation model), DSM (digital elevation model) and DOM (document object model) manufacturing, result data quality inspection and point cloud live-action model construction, wherein the data preprocessing aims to acquire the spatial coordinates and the image exterior orientation elements of the laser point cloud data; the purpose of the point cloud data processing is to obtain effective point cloud data and guarantee the accuracy of the point cloud live-action model; DEM, DSM and DOM are manufactured to produce visualized positive image data; the quality inspection of the result data is to verify the compliance of the data; and performing visual application on the processed data to form a point cloud model and visually reflect the real scene condition of the project.
The superposition method comprises the following steps: the first step is as follows: extracting three-dimensional design result data, and uniformly sampling the three-dimensional design result at proper density to obtain target geometric characteristic data; the second step is that: a third step of using laser radar scanning equipment to carry out three-dimensional measurement on the engineering and acquiring three-dimensional scanning point cloud data: extracting characteristics, namely preprocessing the scanning point cloud to obtain necessary effective data in the registration process; the fourth step: and (3) superposition matching, namely superposing the three-dimensional laser radar scanning point cloud and the three-dimensional design result data to achieve the best fitting, wherein the superposition process comprises two steps, namely rough superposition and accurate superposition. The rough superposition step reduces the pose deviation between the scanning point cloud of the laser radar and the three-dimensional design result as much as possible to achieve an approximate fitting state; the precise superposition operation of the second stage is generally carried out on the basis of the rough superposition, and the aim is to ensure that the scanning point cloud of the laser radar and the three-dimensional design result are in the best fitting state through a precise superposition algorithm. The precise superposition adopts an Iterative Closest Point (ICP) algorithm.
Claims (5)
1. The method for assisting in line engineering completion acceptance of the three-dimensional design result of the power transmission line is characterized by comprising the following steps of: 1. the construction cost tool is output by adopting a three-dimensional design model of the power transmission and transformation project, and a calculation rule base, a list quota matching base and a construction cost information funding standard are formed by combining the calculation amount rule of the civil engineering major of the power construction project and the information funding requirements of the electrical installation and the power transmission line major, so that the accurate and rapid calculation of the project amount is realized; 2. adopting a laser radar detection technology, scanning by using an unmanned aerial vehicle carrying a laser radar to generate point cloud data, and performing high-precision three-dimensional live-action modeling on the line corridor terrain; 3. converting the laser radar three-dimensional line model by comparing the difference between the laser radar three-dimensional line model and the three-dimensional design result model, and overlaying the converted laser radar three-dimensional line model to the three-dimensional design result; 4. and (4) researching detection calculation of the safety distance between the ground object and the wire in the line corridor by combining the acceptance standard requirement, analyzing clearance distance and cross spanning inspection items in the line corridor, and determining whether the transmission line project meets the acceptance requirement.
2. The method for assisting in line construction completion acceptance through three-dimensional design result of a power transmission line according to claim 1, wherein the three-dimensional live-action modeling of the step 2 is mainly realized through steps of data preprocessing, point cloud data processing, DEM, DSM and DOM making, result data quality inspection and point cloud live-action model construction, and the purpose of the data preprocessing is to obtain spatial coordinates and external image orientation elements of laser point cloud data; the purpose of the point cloud data processing is to obtain effective point cloud data and guarantee the accuracy of the point cloud live-action model; DEM, DSM and DOM are manufactured to produce visualized positive image data; the quality inspection of the result data is to verify the compliance of the data; and performing visual application on the processed data to form a point cloud model and visually reflect the real scene condition of the project.
3. The method for assisting in acceptance of completion of line work of three-dimensional design result of power transmission line according to claim 1, wherein the superposition method of step 3 comprises the first step of: extracting three-dimensional design result data, and uniformly sampling the three-dimensional design result at proper density to obtain target geometric characteristic data; the second step is that: a third step of using laser radar scanning equipment to carry out three-dimensional measurement on the engineering and acquiring three-dimensional scanning point cloud data: extracting characteristics, namely preprocessing the scanning point cloud to obtain necessary effective data in the registration process; the fourth step: and (3) superposition matching, namely superposing the three-dimensional laser radar scanning point cloud and the three-dimensional design result data to achieve the best fitting, wherein the superposition process comprises two steps, namely rough superposition and accurate superposition.
4. The method for assisting in line construction completion acceptance of a three-dimensional design result of a power transmission line according to claim 1, wherein the step of rough superposition reduces a pose deviation between a laser radar scanning point cloud and the three-dimensional design result as much as possible to achieve a substantially fitting state; the precise superposition operation of the second stage is generally carried out on the basis of the rough superposition, and the aim is to ensure that the scanning point cloud of the laser radar and the three-dimensional design result are in the best fitting state through a precise superposition algorithm.
5. The method for assisting in line engineering completion acceptance of three-dimensional design achievement of electric transmission line according to claim 1, wherein the precise superposition step adopts an Iterative Closest Point (ICP) algorithm.
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| CN111474443A (en) * | 2020-04-13 | 2020-07-31 | 国网山东省电力公司淄博供电公司 | Method and device for measuring power transmission line |
| CN111504195A (en) * | 2020-05-19 | 2020-08-07 | 北京数字绿土科技有限公司 | Laser point cloud based electric power infrastructure acceptance method and device |
| CN112132964A (en) * | 2020-08-18 | 2020-12-25 | 浙江华阳数智信息科技有限公司 | Digital country construction management and control system and method based on mediated reality technology |
| CN112489028A (en) * | 2020-12-09 | 2021-03-12 | 广东电网有限责任公司东莞供电局 | Engineering quality acceptance method integrating information model and laser three-dimensional scanning technology |
| CN115796568A (en) * | 2023-02-06 | 2023-03-14 | 江苏世通环宇电力科技有限公司 | Power transmission line full-process monitoring and management system and method |
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