CN108074043B - Method for planning power grid matched with urban comprehensive pipe gallery - Google Patents
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Abstract
The invention discloses a method for planning a power grid matched with an urban comprehensive pipe gallery, which comprises the following steps of 1, preparing planning data of the power grid matched with the comprehensive pipe gallery; step 2, constructing and calculating a power grid planning model matched with the comprehensive pipe rack; step 3, judging the construction time sequence of the power grid project matched with the comprehensive pipe rack; step 4, displaying the power line of the power grid planning result matched with the comprehensive pipe rack and the two dimensions of the pipe rack road; the invention solves the problems that the underground comprehensive pipe gallery in the prior art is not systematically and deeply analyzed from the aspect of electric power major, the related planning is carried out only by depending on the working experience of planning personnel, the theory and the method of graph theory are not developed, and the efficiency is very low for the planning of the large-scale urban distribution network pipe gallery.
Description
Technical Field
The invention belongs to the power grid planning technology, and particularly relates to a power grid planning method matched with an urban comprehensive pipe gallery.
Background
The incorporation of pipelines such as electric power into an underground comprehensive pipe gallery is a great change of the construction and development modes of pipelines in cities in China at present, and is one of important marks of the modernization of the construction of novel urban municipal infrastructures in the 21 st century. The device is beneficial to improving the reliability, safety and service life of the operation of the power pipelines and the like; the method plays a key role in saving and utilizing urban ground land and underground space and improving urban comprehensive bearing capacity; the method has important significance for improving the quality of novel urbanization development and creating new power for economic development. Therefore, with the large-scale development of urban comprehensive pipe gallery engineering in China, deep research and practice of a power grid planning method matched with underground pipelines and comprehensive pipelines are urgently needed, scientific and reasonable connection between power grid planning and planning of the underground pipelines and the comprehensive pipe gallery is achieved, the problem of power grid construction bottleneck is solved by utilizing a newly-built pipe gallery to the maximum extent, and the scale, investment, construction time sequence and the like of the power grid matched project of the pipe gallery are determined.
In recent years, from the perspective of the research on the construction idea and principle of the underground comprehensive pipe gallery in China, the basic principle of 'planning first' is emphasized, and meanwhile, the requirement that the planning connection of a newly-built area and an established area is emphasized in classification is provided. Through the economic model, the construction necessity and the construction idea of the comprehensive pipe gallery in the high-density municipal facility area are provided. And the principle suggestions of the overall planning and the partition planning of the urban underground comprehensive pipe gallery are provided from the view point of the urbanization of the underground space. From the viewpoint of underground comprehensive pipe gallery planning model and method research, on the assumption that the comprehensive pipe gallery is a continuous multi-section line consisting of a plurality of vertical lines and horizontal lines, the objective is that the weighted sum of the distances from each demand point to the horizontal lines in a planning area is minimum, a comprehensive pipe gallery center line positioning optimization model is constructed, a plane positioning method of the comprehensive pipe gallery center line is provided, but a specific method is not provided for requirements of various types of infrastructure, particularly power pipelines. NET, and taking the example of Eldmont city, Alberta, Canada, to develop multi-planning scheme simulation and decision-making research of the underground comprehensive pipe gallery. From the perspective of planning of power pipelines in an underground comprehensive pipe gallery, the working method of interaction between layout planning of the underground comprehensive pipe gallery and planning of power cable channels of different levels is discussed by taking Nanjing city as an example from the perspective of urban planning major, the arrangement principle and the technical requirements of an individual cabin of a power cabin and the cabins of other pipelines in the underground comprehensive pipe gallery are analyzed, and the planning method for systematically and deeply analyzing the power grid matched with the urban comprehensive pipe gallery is not from the perspective of power major; the related planning is carried out only by depending on the working experience of planning personnel, the theory and the method are not developed in the graph theory, and the problems of low efficiency and the like exist for the planning of the large-scale urban distribution network pipe gallery.
The invention content is as follows:
the technical problems to be solved by the invention are as follows: the utility model provides a city utility tunnel supporting electric wire netting planning method to solve prior art underground utility tunnel and build not from the electric power specialty perspective, the systematic ground goes deep into the planning method who analyzes city utility tunnel supporting electric wire netting, only relies on planning personnel's work experience to carry out relevant planning, and does not develop theory of the graph and method, for large-scale city distribution network pipe gallery planning, has the low scheduling problem of efficiency.
The technical scheme of the invention is as follows:
a method for planning the power network matched with city comprehensive pipe gallery includes
Step 1, preparing power grid planning data matched with a comprehensive pipe rack;
and 4, displaying the power line of the power grid planning result matched with the comprehensive pipe rack and the two dimensions of the pipe rack road.
Step 1, preparing power grid data and city planning data by the data; the power grid data comprises information of all existing and newly-built power lines in a planning region between planning years; the city planning data comprises power pipe gallery construction and city road information in planning annual planning areas.
And 2, constructing and calculating a power grid planning model matched with the comprehensive pipe rack, wherein the construction of the urban power pipe rack and road model, the correction of a weight matrix, the determination of heuristic information, the solution of the Warshall-Floyd algorithm on the optimal wiring path and the drawing of a planned geographical wiring diagram are included.
The construction and calculation of the power grid planning model matched with the comprehensive pipe rack specifically comprise the following steps:
step 2.1, building of the urban power pipe gallery and the road model: extracting information data of the power pipe gallery and the road under the Western's Ann coordinate system or Beijing 54 coordinate system on the city planning drawing, setting the drawing G as (V, A, B and E), and recording a vertex set consisting of coordinate points of all the power pipe galleries and the roads on the drawing as (V, A, B and E)1,v2,…,vn) Wherein the set of vertices associated with the trunk piping lane is designated (a)1,a2,…,ana) Set of vertices associated with a spur pipeline lane is noted (b)1,b2,…,bnb) (ii) a Side v of Givj(i, j ═ 1,2, …, n) is given a weight ωijI.e. is vi、vjActual road length between two coordinate points, if vi、vjIf they are not adjacent, let omegaij＝+∞；
Step 2.2, correcting the weight matrix: in order to embody the power line corridor constraint, an important coefficient lambda of a main line pipe corridor is introducedaAnd the important coefficient lambda of the branch pipe gallerybAnd correcting the weight matrix of the Warshall-Floyd algorithm, wherein the specific correction method is as follows.
Step 2.3, determination of heuristic information: heuristic information is determined by a planner, and for the new power line planning, the heuristic information refers to an ordered coordinate vertex set C consisting of power supply points, load points and must-pass points related to the power line and is recorded as (C)1,c2,…,cm) (ii) a For the current electric power line transformation planning, as the situation of planning and transformation at multiple positions of one electric power line exists, the heuristic information of one electric power line comprises multiple groups of ordered coordinate vertex sets, and each group of ordered coordinate vertex set further comprises two elements, namely a transformation starting point and a transformation end point;
step 2.4, solving the optimal wiring path by using a Warshall-Floyd algorithm: solving each group of ordered coordinate vertex set c by using Warshall-Floyd algorithmlTo cl+1Where l is 1,2, …, m-1. The Warshall-Floyd algorithm has the following recursion relation:
in the formula dij(k) Is from viTo vjWhere i, j equals 1,2, …, n and k equals 1,2, …, n, and each intermediate vertex of the path (if any) is numbered no more than k. The symbol D (k) ═ dij(k) Calculate the shortest distance matrix D (n) of graph G through a series of n-order matrices D (0), …, D (n), and determine all clTo cl+1The optimal routing path of the optical fiber;
step 2.5, planning the drawing of the geographical wiring diagram: for new power line planning, c obtained in step 2.4 is sequentially connectedlTo cl+1Obtaining the planning scheme of the proposed new line planning method; for the current power line transformation planning, the reserved part of the current power line and the routing path after the transformation are connected in sequence, and finally the total path is the optimal routing scheme for the current line transformation.
and 4.1, showing the details of the power lines of the entrance corridor in each comprehensive pipe corridor in the planning year from the dimensionality of the comprehensive pipe corridor, wherein the dimensionality information of the pipe corridor is mainly used for reference of urban planning personnel.
And 4.2, showing details of entering of each power line into a corresponding comprehensive pipe gallery section in a planning year from the dimension of the power line, wherein the dimension information of the line is mainly referred by a power supply network planning personnel.
The invention has the beneficial effects that:
the invention provides a power grid planning method matched with a mountain city comprehensive pipe rack based on a heuristic Warshall-Floyd algorithm on the basis of the automatic wiring idea on the basis of the existing technical principle of the power grid planning matched with the city comprehensive pipe rack, in order to improve the working efficiency of the power grid planning matched with the city comprehensive pipe rack and develop a suitable power grid planning model and method matched with the city comprehensive pipe rack; the basic theoretical basis is provided for the planning research of the power grid matched with the comprehensive pipe rack, and a new idea is provided for the reasonable planning of the power grid matched with the comprehensive pipe rack.
The method for planning the power grid matched with the mountain city comprehensive pipe rack based on the heuristic Warshall-Floyd algorithm has better guiding value for planning the power grid matched with the city comprehensive pipe rack;
in summary, compared with the traditional power grid planning method matched with the urban comprehensive pipe gallery, the method has the following obvious beneficial effects:
1) the traditional method for planning the power grid matched with the urban comprehensive pipe gallery only depends on the working experience of planning personnel to carry out related planning, is not developed by a theory and a method of graph theory, and has low efficiency for planning the large-scale urban distribution network pipe gallery. The planning method provided by the invention is based on the Warshall-Floyd algorithm, and by manually setting the starting point and the essential point, heuristic information is provided, so that the situation that part of electric power lines in the pipe rack area need not to enter the rack constraint and part of electric power lines outside the pipe rack area need to enter the rack constraint is introduced, the calculation time of algorithm optimization is saved, the rationality of a planning scheme is enhanced, a power grid planning model and a method matched with the urban comprehensive pipe rack are developed, and the working efficiency of the matched power grid planning and the scientificity of the planning scheme are obviously improved.
2) The method for displaying the two-dimensional planning result of the power line-pipe gallery road provided by the invention not only displays the detailed pipe gallery road dimension of the power line of the entrance gallery in each comprehensive pipe gallery in the planning year, but also displays the detailed power line dimension of each power line entering the corresponding comprehensive pipe gallery section in the planning year, and provides required planning scheme result data for city planning personnel and power grid planning personnel respectively. Compared with the traditional presentation method of the single pipe gallery road dimension output planning scheme, the method provided by the invention more comprehensively presents the result data of the planning scheme, and is beneficial to the butt joint and fusion of the work of planning personnel in two fields.
The invention solves the problems that the underground comprehensive pipe gallery in the prior art is not systematically and deeply analyzed from the aspect of electric power major, the related planning is carried out only by depending on the working experience of planning personnel, the theory and the method of graph theory are not developed, and the efficiency is very low for the planning of the large-scale urban distribution network pipe gallery.
Description of the drawings:
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a diagram illustrating the location of a DT-SZ parcel in a certain city according to an embodiment;
FIG. 3 is a schematic diagram of an underground comprehensive pipe gallery model of a certain city DT-SZ district according to an embodiment;
FIG. 4 is a schematic diagram illustrating an operation result of a new line plan from a single power point to multiple load points according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a model architecture of a present power line;
fig. 6 is a schematic diagram of an operation result of the present invention for planning the transformation of the power line.
The specific implementation mode is as follows:
a method for planning a power grid matched with an urban comprehensive pipe gallery comprises the following steps:
step 1, preparing power grid planning data matched with a comprehensive pipe rack;
The comprehensive pipe gallery is matched with power grid planning data preparation, and the power grid planning data preparation comprises power grid data and city planning data. The power grid data comprises relevant information of all existing and newly-built power lines in a planning region between planning years; the city planning data comprises relevant power pipe gallery construction and city road information in planning areas among planning years.
And 2, constructing and calculating a power grid planning model matched with the comprehensive pipe rack, wherein the construction of the urban power pipe rack and road model, the correction of a weight matrix, the determination of heuristic information, the solution of the Warshall-Floyd algorithm on the optimal wiring path and the drawing of a planned geographical wiring diagram are included. The method comprises the following specific steps:
and 2.1, constructing the urban power pipe gallery and the road model. And extracting information data related to the power pipe gallery and the road under a Western-style safety coordinate system or a Beijing 54 coordinate system on the urban planning drawing. Let G ═ V, a, B, E, and take the set of vertices consisting of the coordinate points of all power pipe corridors and roads on the drawing as (V, a, B, E)1,v2,…,vn) Wherein the set of vertices associated with the trunk piping lane is designated (a)1,a2,…,ana) Set of vertices associated with a spur pipeline lane is noted (b)1,b2,…,bnb) (ii) a Side v of Givj(i, j ═ 1,2, …, n) is given a weight ωijI.e. is vi、vjActual road length between two coordinate points, if vi、vjIf they are not adjacent, let omegaij＝+∞。
And 2.2, correcting the weight matrix. Is composed ofEmbodies the restraint of the power line corridor and introduces the important coefficient lambda of the main line pipe corridoraAnd the important coefficient lambda of the branch pipe gallerybAnd correcting the weight matrix of the Warshall-Floyd algorithm. The specific correction method is as follows.
And 2.3, determining heuristic information. Heuristic information is determined by a planner, and for the new power line planning, the heuristic information refers to an ordered coordinate vertex set C consisting of power supply points, load points and must-pass points related to the power line and is recorded as (C)1,c2,…,cm) (ii) a For the current electric power line transformation planning, due to the fact that a plurality of places of one electric power line are planned and transformed, the heuristic information of one electric power line comprises a plurality of groups of ordered coordinate vertex sets, and each group of ordered coordinate vertex set further comprises a transformation starting point and a transformation end point.
And 2.4, solving the optimal wiring path by using a Warshall-Floyd algorithm. Solving each group of ordered coordinate vertex set c by using Warshall-Floyd algorithmlTo cl+1Where l is 1,2, …, m-1. The Warshall-Floyd algorithm has the following recursion relation:
in the formula dij(k) Is from viTo vjWhere i, j equals 1,2, …, n and k equals 1,2, …, n, and each intermediate vertex of the path (if any) is numbered no more than k. The symbol D (k) ═ dij(k) Calculate the shortest distance matrix D (n) of graph G through a series of n-order matrices D (0), …, D (n), and determine all clTo cl+1The optimal routing path.
And 2.5, planning the drawing of the geographic wiring diagram. For new power line planning, c obtained in step 2.4 is sequentially connectedlTo cl+1The optimal wiring path is obtainedA planning scheme of the proposed new line planning method; for the current power line transformation planning, the reserved part of the current power line and the routing path after the transformation are connected in sequence, and finally the total path is the optimal routing scheme for the current line transformation.
The utility tunnel supporting power grid engineering construction time sequence judge, according to the principle of the utility tunnel supporting power grid planning "enter the corridor in order", combine the power line construction time that the electric wire netting data provided and the power pipe gallery construction time that the city planning data provided, propose power line and enter the corridor time sequence scheme.
The utility model discloses a comprehensive pipe gallery, including utility tunnel, power line, the both sides dimension show of the supporting power grid planning result of utility tunnel, except that the route geography walks the map, this paper proposes to present the supporting power grid planning result of utility tunnel with the form of two dimensions, presents the supporting power grid planning scheme of planning district utility tunnel from utility tunnel and two dimensions of power line promptly.
And 4.1, showing the details of the power lines of the entrance corridor in each comprehensive pipe corridor in the planning year from the dimensionality of the comprehensive pipe corridor, wherein the dimensionality information of the pipe corridor is mainly used for reference of urban planning personnel.
And 4.2, showing details of entering of each power line into a corresponding comprehensive pipe gallery section in a planning year from the dimension of the power line, wherein the dimension information of the line is mainly referred by a power supply network planning personnel.
The technical scheme of the invention takes the power grid planning of a part of a typical DT-SZ group cluster area (as shown in figure 2) of a certain city, and utilizes MATLAB software to program an algorithm program to verify the effectiveness of the method provided by the invention.
FIG. 3 is a diagram of basic information of a DT-SZ district road and a power pipe gallery in a certain city. Wherein the black thick line segment is a trunk line pipe gallery, the dark gray line segment is a branch line pipe gallery, and the basic information of the related pipe gallery is shown in table 1; the light gray line segment is a road; the magenta circle is a transformer substation, and the DT, MY and SZ change are performed in sequence from west to east. The wiring priority and the actual engineering condition of various power pipe galleries are considered, and the important coefficient lambda of the main pipe gallery is takenaIs 1.3, the important coefficient lambda of the branch pipe gallerybIs 1.1.
TABLE 1 TR City DT-SZ district each section pipe gallery parameter
Case one: a DT transformation electric power line c line is connected with an SZ transformation electric power line d line, the c line needs to supply power to F point loads, J point loads and K point loads, the d line needs to supply power to M point loads, the c line and the d line are completed in 2022 years after being built in 2021 years, and corresponding power grid planning is carried out by combining the construction condition of a comprehensive pipe gallery.
The results of the run using the proposed heuristic Warshall-Floyd algorithm are shown in fig. 4 by the black and thick dotted line. Tables 3 and 4 show the two-dimensional output results of case one
TABLE 3 heuristic piping lane dimension output Table of Warshall-Floyd Algorithm
TABLE 4 heuristic Power line dimension output Table of Warshall-Floyd Algorithm
Case two: the e line trend of the existing power line is shown as a black dotted line in fig. 5, and corridor transformation needs to be carried out according to the construction condition of the DT-SZ district power utility tunnel.
The method is used for planning the existing power line, a DT transformation line point is taken as a transformation starting point, an intersection point of the existing power line and a pipeline GH is taken as a transformation end point, a point F is a load point which must be supplied by the transformed line, other parts of the power line are kept unchanged, and the final operation result is shown in the following figure 6. Tables 5 and 6 show the two-dimensional output results of case two.
TABLE 5 heuristic status quo line renovation piping lane dimension output
TABLE 6 heuristic status quo line transformation power line dimension output
Claims (4)
1. A method for planning the power network matched with city comprehensive pipe gallery includes
Step 1, preparing power grid planning data matched with a comprehensive pipe rack;
step 2, constructing and calculating a power grid planning model matched with the comprehensive pipe rack;
the construction and calculation of the power grid planning model matched with the comprehensive pipe rack specifically comprise the following steps:
step 2.1, building of the urban power pipe gallery and the road model: extracting information data of the power pipe gallery and the road under the Western's Ann coordinate system or Beijing 54 coordinate system on the city planning drawing, setting the drawing G as (V, A, B and E), and recording a vertex set consisting of coordinate points of all the power pipe galleries and the roads on the drawing as (V, A, B and E)1,v2,…,vn) Wherein the set of vertices associated with the trunk piping lane is designated (a)1,a2,…,an) Set of vertices associated with a spur pipeline lane is noted (b)1,b2,…,bn) (ii) a Side v of GivjWherein i, j is 1,2, …, n is assigned a weight ωijI.e. is vi、vjActual road length between two coordinate points, if vi、vjIf they are not adjacent, let omegaij＝+∞；
Step 2.2, correcting the weight matrix: in order to embody the power line corridor constraint, an important coefficient lambda of a main line pipe corridor is introducedaAnd the important coefficient lambda of the branch pipe gallerybCorrecting the weight matrix of the Warshall-Floyd algorithm, wherein the specific correction method is as follows:
step 2.3, determination of heuristic information: heuristic information is determined by a planner, and for the new power line planning, the heuristic information refers to power supply points and load points related to the power lineAnd an ordered set of coordinate vertices C consisting of the inevitable points, denoted as (C)1,c2,…,cm) (ii) a For the current electric power line transformation planning, as the situation of planning and transformation at multiple positions of one electric power line exists, the heuristic information of one electric power line comprises multiple groups of ordered coordinate vertex sets, and each group of ordered coordinate vertex set further comprises two elements, namely a transformation starting point and a transformation end point;
step 2.4, solving the optimal wiring path by using a Warshall-Floyd algorithm: solving each group of ordered coordinate vertex set c by using Warshall-Floyd algorithmlTo cl+1Wherein l is 1,2, …, m-1, Warshall-Floyd algorithm has the following recursion relation:
in the formula dij(k) Is from viTo vjThe length of a shortest path among all paths in between, wherein i, j equals 1,2, …, n and k equals 1,2, …, n, if there are intermediate vertices in the path, the number of each intermediate vertex in the path is not greater than k; the symbol D (k) ═ dij(k) Calculate the shortest distance matrix D (f) of graph G through a series of n-order matrices D (0), …, D (n), and determine all clTo cl+1The optimal routing path of the optical fiber;
step 2.5, planning the drawing of the geographical wiring diagram: for new power line planning, c obtained in step 2.4 is sequentially connectedlTo cl+1Obtaining the planning scheme of the proposed new line planning method; for the current power line transformation planning, sequentially connecting a reserved part of the current power line and a routing path after the transformation planning, and finally obtaining a total path, namely an optimal routing scheme for the current line transformation;
step 3, judging the construction time sequence of the power grid project matched with the comprehensive pipe rack;
and 4, displaying the power line of the power grid planning result matched with the comprehensive pipe rack and the two dimensions of the pipe rack road.
2. The city utility tunnel matching power grid planning method according to claim 1, characterized in that: step 1, the data preparation comprises the preparation of power grid data and city planning data; the power grid data comprises information of all existing and newly-built power lines in a planning region between planning years; the city planning data comprises power pipe gallery construction and city road information in planning annual planning areas.
3. The city utility tunnel matching power grid planning method according to claim 1, characterized in that: step 3, judging the construction time sequence of the power grid project matched with the comprehensive pipe rack is as follows: according to the principle of 'orderly corridor' planning of a power grid matched with a utility tunnel, the power line construction time provided by power grid data and the power pipe corridor construction time provided by city planning data are combined, and a power line corridor timing sequence scheme is provided.
4. The city utility tunnel matching power grid planning method according to claim 1, characterized in that: step 4 the two-dimensional exhibition of the power line of the utility tunnel matching power grid planning result and the pipe gallery road includes:
step 4.1, showing the details of the power lines of the entrance corridor in each comprehensive pipe corridor in the planning year from the dimension of the comprehensive pipe corridor, wherein the dimension information of the pipe corridor is mainly used for reference of urban planning personnel;
and 4.2, showing details of entering of each power line into a corresponding comprehensive pipe gallery section in a planning year from the dimension of the power line, wherein the dimension information of the line is mainly referred by a power supply network planning personnel.
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