CN-121980815-A - Power line migration-modification digital design method combined with construction feasibility evaluation

CN121980815ACN 121980815 ACN121980815 ACN 121980815ACN-121980815-A

Abstract

The invention provides a digital design method for power line migration and modification combined with construction feasibility assessment, which relates to the technical field of digital technology for power line migration and modification, the invention can realize the migration and modification range of migration and modification by demarcating cells in a BIM map, determines a plurality of relay points and establishes a plurality of alternative paths according to the actual content and scene label corresponding properties in each cell and the circuit concentrated access point in the power line which is originally required to be migrated and modified, and constructing a convenient score according to the number of the passed priority areas and sections of the alternative paths, constructing a construction difficulty score according to the passed road unit grids and road sections, constructing a narrow road correction factor according to a narrow road which is closer to a building in a non-road section and the minimum distance of the narrow road, and constructing a comprehensive score to select a migration path from a huge number of alternative paths, thereby realizing construction and selection of the migration path from the viewpoint of construction difficulty.

Inventors

JI YUNLONG
WEI YONGJIE
ZHAO YUNWEN
WANG LIMING
LI PENGFEI
GUO YANKAI
CHI HONGWEI
YUAN FENG
SU NING
GU SHIMIN
BI AIWEN

Assignees

中铁二十二局集团电气化工程有限公司
中铁二十二局集团有限公司

Dates

Publication Date: 20260505
Application Date: 20260211

Claims (10)

1. The power line migration-modification digital design method combined with construction feasibility evaluation is characterized by comprising the following specific steps of: marking a power line to be migrated in a BIM map, defining a migrated range according to a path of the power line, dividing the migrated range into cells, and calibrating properties according to the content in each cell, wherein the properties comprise a road, a priority region and a forbidden region; Dividing a user area by an original circuit concentrated access point in the power line to be migrated according to the need, setting a plurality of relay points in the user area, selecting one relay point in each user area, taking the selected relay point and a start-stop point of the power line to be migrated as control points, and constructing a plurality of alternative paths by using a control point connection method; marking the alternative paths passing through the continuous priority areas as a section, obtaining the number of sections of the alternative paths and the number of passing through the priority areas, establishing a convenient score, using the alternative paths passing through the continuous road cells as road sections, obtaining the motor vehicle flow of each road section, and establishing a construction difficulty score by combining the road cells; And 4, judging a narrow road according to the minimum distance between the road cell of the non-road section and the nearest forbidden zone in the alternative paths, establishing a narrow road correction factor according to the mean square error of the narrow road and the number of the narrow roads, constructing the comprehensive score of each alternative path by combining the convenient score, the construction difficulty score and the narrow road correction factor, and selecting the alternative path with the largest comprehensive score value as the transition path.
2. The method for digitized design of power line migration combined with construction feasibility assessment according to claim 1, wherein the method is characterized in that a power line path to be migrated is obtained, the path is marked on a BIM map, a movable range is defined within 1Km distance from a straight line of the line, the movable range is divided into cells, the cells are square grids, the cells are respectively marked with properties, the BIM map is a real map, the properties are three types of logic which are respectively a road, a priority area and a forbidden area, and the marked properties are: if the building or the equipment which does not allow the power line to pass through exists in the cell, marking the cell as a forbidden area; if the original municipal circuit pipeline exists in the cell, marking the cell as a priority area; marking the rest cells as roads; And marking the cells formed by the priority area and the road in the delimited range as a line migration feasible area.
3. The method for digitized design of power line migration combined with construction feasibility assessment according to claim 2, wherein a starting point and an ending point of a power line to be migrated are obtained and marked in a feasible region, each circuit centralized access point is obtained, the circuit centralized access point represents a site for accessing power to a trunk line from a branch line of a user in a community, a user region is defined by taking the circuit centralized access point as a circle center, relay points are uniformly arranged in the user region, the densities of the relay points uniformly represent the same point at all positions in a plane of the user region, the densities of the relay points arranged in each circuit centralized access point are the same, the diameter of each circuit centralized access point defining the user region is inversely related to the total power of the circuit centralized access point, and the total power represents the daily average power consumption of the circuit centralized access point.
4. The method for digitized design of power line migration combined with construction feasibility assessment of claim 3 wherein said method is characterized by constructing alternative paths in feasible areas through all circuit-concentrated access points, the logic is as follows: Selecting a relay point from each user area, sequencing the selected relay points according to the sequence of the circuit centralized access points, wherein the sequence of the circuit centralized access points represents the sequence from a starting point to an ending point of each circuit centralized access point on a power line which is originally required to be changed, then forming a plurality of changed paths through a control point connection method, taking a forbidden area as an obstacle point for avoiding, and acquiring a plurality of alternative paths through selecting different relay points in the user area.
5. The method for digitized design of power line migration combined with construction feasibility assessment of claim 4, wherein the method is characterized in that the number of the alternative paths passing through the priority zone and the number of sections are respectively obtained, and the logic for obtaining the number of sections is as follows: in the alternative path, screening is carried out according to the direction from the starting point to the ending point, when the classification of the cells passed by the fragment of the alternative path is a priority zone, a section is considered to exist, then screening is continued, all the sections with the passed cell classification being the priority zone are obtained, and the number of the sections is calculated; And constructing a convenience score according to the number of the priority areas and the number of the sections of each alternative path, wherein the logic is as follows: and dividing the number of the priority areas of the Euler number by the number of the sections to obtain a quotient, wherein the quotient is the convenience score.
6. The method for digitized design of power line migration combined with construction feasibility assessment of claim 5 wherein said method is characterized by obtaining the number of road cells traversed by an alternative path and obtaining the traversed road segment of the present alternative path, the logic is as follows: And acquiring all road cells passing through the alternative path, setting a continuity threshold value, and when the road cells continuously exist along the alternative path and the continuous number exceeds the continuity threshold value, the continuous state indicates that a plurality of road cells are closely connected and uninterrupted on the alternative path, and the continuously existing road cells are considered to be a road section.
7. The method for digitized design of power line migration combined with construction feasibility assessment of claim 6 wherein said method comprises obtaining a traffic flow in a road segment from traffic information, said traffic flow representing a total number of vehicles that said road segment has passed within a construction time; The number of road segments passed by the alternative path is obtained, and a construction difficulty score is constructed by combining the number of road cells and the motor vehicle flow of each road segment, and the logic is as follows: In a single road section, constructing a logarithmic function by taking Euler numbers as a base number and taking motor vehicle flow as logarithms, obtaining the sum of the logarithmic functions of all road sections, and then adding the number of road cells to obtain the sum, wherein the sum is the construction difficulty score.
8. The method for digitized design of power line migration combined with construction feasibility assessment of claim 7 is characterized by obtaining minimum distance between road cells of non-road sections in an alternative path and a nearest forbidden zone, wherein the minimum distance represents distance between the road cells in the alternative path and two nearest points of the forbidden zone, setting a distance threshold, obtaining the road cells with the minimum distance smaller than the distance threshold, marking the road cells as narrow roads, recording the minimum distance of each narrow road, obtaining average square error of the minimum distance of all narrow channels, obtaining the number of all cells passed by the alternative path and the number of the narrow channels, and calculating a narrow road correction factor.
9. The digitized design method for power line migration combined with construction feasibility assessment of claim 8 is characterized in that the calculation logic of the narrow road correction factor is as follows: And multiplying the mean square error of the minimum distance of the narrow channel by the number of the narrow channels to obtain a product, and dividing the product by the number of all cells passed by the alternative path to obtain a quotient, wherein the quotient is the narrow road correction factor.
10. The method for digitized design of power line migration combined with construction feasibility assessment of claim 9 wherein said method is characterized by combining said convenience score, construction difficulty score and narrow road factor of each alternative path to construct a composite score of each alternative path, said logic being as follows: And subtracting the construction difficulty score from the convenient score and subtracting the narrow road factor from the construction difficulty score to obtain a difference, wherein the difference is the comprehensive score.

Description

Power line migration-modification digital design method combined with construction feasibility evaluation Technical Field The invention relates to the technical field of power line transition digital design, in particular to a power line transition digital design method combined with construction feasibility evaluation. Background With the improvement of social management and infrastructure level, more and more inter-city old power lines cannot meet the current power demand, the old power lines need to be changed to ensure the use requirement of development, but the old lines are all over, many places on the path are already built, damage to the existing construction is avoided when the lines are changed, the construction is inconvenient, even the situation that whether the lines cannot be constructed due to unreliability factors is caused, and the like is considered, so that an changing path which is more convenient to construct is needed to be constructed by combining the actual changing path and the current construction on the changing path, and the digital construction method of the path is needed. In the prior art, a document with a publication number of CN119720450A discloses a digital power line migration design method and a digital power line migration design system, which comprise the steps of carrying out rasterization processing on a target migration area, carrying out cost assignment on each grid to obtain cost expectation of each grid, determining a low-cost area consisting of low-cost grids in the target migration area according to the cost expectation of each grid, determining an initial grid and a target grid of a target path in the target migration area based on the existing power line and the target migration area, and searching a plurality of migration paths between the initial grid and the target grid in the target migration area by utilizing an ant colony algorithm introducing the low-cost area. Although the disclosed technical document realizes construction of the transition route of the power line within the range for the purpose of cost reduction, the disclosed technical document does not consider the construction feasibility of the power line at a special position, and the disclosed technical document is a construction mode with minimum cost in terms of calculation, but the cost is greatly increased due to the construction difficulty of part of positions, so that the transition route of the power line cannot be considered from the viewpoint of the construction difficulty. The above information disclosed in the background section is only for enhancement of understanding of the background of the disclosure and therefore it may include information that does not form the prior art that is already known to a person of ordinary skill in the art. Disclosure of Invention The invention aims to provide a digital design method for power line transition combined with construction feasibility evaluation, so as to solve the problems in the background technology. In order to achieve the above purpose, the present invention provides the following technical solutions: the digital design method for the power line migration combined with construction feasibility assessment comprises the following specific steps: marking a power line to be migrated in a BIM map, defining a migrated range according to a path of the power line, dividing the migrated range into cells, and calibrating properties according to the content in each cell, wherein the properties comprise a road, a priority region and a forbidden region; Dividing a user area by an original circuit concentrated access point in the power line to be migrated according to the need, setting a plurality of relay points in the user area, selecting one relay point in each user area, taking the selected relay point and a start-stop point of the power line to be migrated as control points, and constructing a plurality of alternative paths by using a control point connection method; marking the alternative paths passing through the continuous priority areas as a section, obtaining the number of sections of the alternative paths and the number of passing through the priority areas, establishing a convenient score, using the alternative paths passing through the continuous road cells as road sections, obtaining the motor vehicle flow of each road section, and establishing a construction difficulty score by combining the road cells; And 4, judging a narrow road according to the minimum distance between the road cell of the non-road section and the nearest forbidden zone in the alternative paths, establishing a narrow road correction factor according to the mean square error of the narrow road and the number of the narrow roads, constructing the comprehensive score of each alternative path by combining the convenient score, the construction difficulty score and the narrow road correction factor, and selecting the alternative path with the largest comprehensive