CN115577480A - Distribution network contact graph automatic generation method - Google Patents
Distribution network contact graph automatic generation method Download PDFInfo
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Abstract
The invention discloses an automatic generation method of a distribution network contact diagram, which comprises the steps of carrying out topological analysis on a distribution network topological structure, obtaining the contact topological relation of each line, obtaining all connected power supply paths, and establishing a contact topological model; the crossing position of the distribution network lines in the generated graph is consistent with the actual trend, and a crossing place is built; defining initial coordinates (x, y) of a first transformer substation, and defining the initial coordinates of each line according to outgoing lines of the transformer substation; setting an equal difference interval difference, calculating coordinates (dx, dy) of opposite side connecting lines according to the line connection relation, and recursively generating a coordinate point matrix of each line; and programming to generate a contact SVG or CAD contact graph according to the generated contact coordinate matrix of the regional distribution network. The manual drawing may need 1 hour to draw, check, adjust and other processes, and the computer automatic drawing only needs second-level time, thereby greatly improving the production efficiency.
Description
Technical Field
The invention relates to the technical field of automatic power grid drawing, in particular to an automatic generation method of a distribution network contact diagram.
Background
Along with the rapid development of the power grid, the scale of the power distribution network equipment is more and more huge, and the grid structure is more and more complex. At present, a distribution network diagram used in the production of a distribution network is a distribution network single line diagram, contents such as medium-voltage line contact relation, main transformer information of a line, main line diameter and the like are drawn in the distribution network single line diagram, and the distribution network single line diagram utilizes specified graphic symbols and equipment connection lines to carry out visual electrical connection diagram on the distribution network. However, since the distribution network devices are numerous, one single line diagram needs to include all the primary devices, which results in a large drawing, and a computer display screen cannot ensure that a viewer can clearly see all the situations, and cannot visually know the contact situation of the whole distribution network. Although there is a research for automatically generating a contact diagram at present, the generated diagram is easy to have device overlapping, and when device layout is performed, the problems of complex wiring, low efficiency, serious overlapping and crossing phenomena and the like are often caused because whether wiring is convenient or not are not considered, wherein in order to solve the problem of device overlapping, new problems of uneven equipment spacing, asymmetry and the like are often caused, and it is difficult to ensure that the generated single line diagram is compact and beautiful. The application requirements cannot be met.
At present, automatic mapping modules developed by some research and development companies automatically generate a power distribution network contact diagram, but equipment overlapping easily occurs in the existing method, and the problems of complex wiring, low efficiency, serious overlapping and crossing phenomena and the like are often caused when whether wiring is convenient or not are not considered in equipment layout, wherein in order to solve the new problems of uneven equipment spacing, asymmetry and the like caused by equipment overlapping, the generated single line diagram is difficult to ensure to be compact and attractive. The manually drawn distribution network contact diagram has the advantages of user self-definition, attractiveness in drawing and the like, but the drawing efficiency is low, the drawing cannot be timely updated according to topological data, drawing errors are difficult to timely find, and the like.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The invention is provided in view of the above and/or the problems existing in the existing distribution network contact diagram automatic generation method.
Therefore, the problem to be solved by the invention is how to provide an automatic generation method of a distribution network contact diagram.
In order to solve the technical problems, the invention provides the following technical scheme: a distribution network contact diagram automatic generation method comprises the following steps,
carrying out topology analysis on a distribution network topological structure, obtaining the contact topological relation of each line, obtaining all connected power supply paths, and establishing a contact topological model;
the crossing position of the distribution network lines in the generated graph is consistent with the actual trend, and a crossing place is built;
defining initial coordinates (x, y) of a first substation, and defining the initial coordinates of each line according to outgoing lines of the substation;
setting an equal difference interval difference, calculating coordinates (dx, dy) of opposite side connecting lines according to the line connection relation, and recursively generating a coordinate point matrix of each line;
and programming to generate a contact SVG or CAD contact graph according to the generated contact coordinate matrix of the regional power distribution network.
As an optimal scheme of the distribution network contact diagram automatic generation method, the method comprises the following steps: the power distribution network topology structure is used for preprocessing the data entering the network, the preprocessing mode is that an original CIM or XML data file is analyzed and analyzed into a data format which can be understood by the network topology, and the analyzed data is combined by six data modes, namely edge numbers, initial node types, termination node numbers, termination node types and edge types.
As an optimal scheme of the distribution network contact diagram automatic generation method, the method comprises the following steps: the topological relation is stored in a tree structure, the storage structure table is sequentially arranged according to a tree table, a tree edge table and a tree node table in a database, then each branch is processed by a trunk branch model, and finally a feeder line is formed.
As an optimal scheme of the distribution network contact diagram automatic generation method, the method comprises the following steps: the feeder line is formed by firstly distributing contact nodes in a tree state and then preparing data calculation;
the data calculation preparation stage is to calculate the degree and weight value of each node in the tree and identify leaf nodes and father nodes of the tree;
the feeder node weight identification mode is a leaf array identification mode based on a depth-first algorithm from a root node, wherein the highest-weight node in the next nodes which are not accessed is accessed with priority each time,
when the DFS accesses the node, judging whether the DFS has child nodes or not, and if not, displaying the weight of 0;
when the DFS access node has child nodes, solving the maximum weight value of the child nodes, adding the maximum weight value of the child nodes by the node calculation value, judging whether traversal is finished or not, and finishing the algorithm if the traversal is finished;
when the DFS access node has child nodes, solving the maximum weight value of the child nodes, adding the maximum weight value of the child nodes by the node calculation value, judging whether traversal is finished or not, and if the traversal is not finished, performing re-access;
the traversal is finished by accessing all child nodes of the node;
the main line of the feeder line refers to the longest path from the first element in the leaf team to the power bus, and the main line is set as a first-level main line of the feeder line.
As an optimal scheme of the distribution network contact diagram automatic generation method, the method comprises the following steps: the coordinate position of a node in the trunk line is
x(V i )＝x(V root )+(w(V root )-w(V i ))*D min
Wherein, (x (V) root )，y(V root ) Is the coordinate position of the root node, and w (Vi) is the weight value of the node Vi, and the root node coordinate is set to (0,0) in the present invention.
As a preferred scheme of the distribution network contact diagram automatic generation method, the method comprises the following steps: the cross place of the power distribution network node construction is determined according to the branch number of the node,
when a node has a direction drawing problem, firstly judging branch lines of the node and then judging the number of arrangement;
when the branches of the nodes are even-level branches and the arrangement number is odd, the direction is downward;
when the branches of the nodes are even-level branches and the arrangement number is not an odd number, the direction is upward;
when the branches of the nodes are not even-numbered branches and the arrangement number is odd, the direction is towards the right;
when the node branches are not even-numbered branches and the number of the branches is not odd, the direction is towards the left.
As an optimal scheme of the distribution network contact diagram automatic generation method, the method comprises the following steps: in the automatic branch line drawing process, the proportion of the branch lines and the node balance degree of the two sides of the trunk line need to be considered;
the branch line proportion calculation is to judge the number of branch line nodes occupying the total nodes of the branch line, when the proportion of one branch line node exceeds 0.5, the branch line is normally drawn automatically in the tree direction d, and all other branch lines are drawn in the direction opposite to the direction d;
and the calculation of the balance degree of the nodes on two sides of the trunk line is that similar branches are arranged at two ends of the tree, and when the proportion of the nodes in the same direction exceeds 50% of the nodes of the branch, other branches automatically draw in the other direction of the branch.
As an optimal scheme of the distribution network contact diagram automatic generation method, the method comprises the following steps: the programming generation of the contact SVG or CAD contact graph is expressed in a python form after the distribution network contact graph is formed.
As an optimal scheme of the distribution network contact diagram automatic generation method, the method comprises the following steps: in the distribution network contact graph forming process, the distance between each branch is equidistant, and the distance between different nodes in each branch is the same.
As a preferred scheme of the distribution network contact diagram automatic generation method, the method comprises the following steps: in the distribution network contact diagram process, if the wiring diagram is too long, folding can be carried out, and the folding can be divided into secondary folding and primary folding;
the folding mode is that a main trunk line is found first, and then all 2-level branch lines in the main trunk line are found;
when the second-stage folding is selected, temporarily hiding all branches on the second-stage branch lines, and only leaving the main trunk line and the second-stage branch lines on the main trunk line;
when the first-level folding is selected, all the second-level branches of the main trunk are hidden on the basis of the second-level folding, and only the main trunk is left.
The invention has the advantages that a brand-new thematic map type is provided: distribution network contact map can make things convenient for the scheduling personnel, generate the operation personnel, and transformer substation, distribution lines relative position distribution and interconnection relation each other are looked over to electric wire netting planning personnel etc. improve dispatch overview ability, production fortune dimension ability, satisfy the needs of scheduler, production operation personnel to the practicality of drawing and look over whole transformer substation position and contact the demand of drawing. The manual drawing may need 1 hour to draw, check, adjust and other processes, and the computer automatic drawing only needs second-level time, thereby greatly improving the production efficiency. The distribution network contact diagram is an important method for analyzing the operation mode of the distribution network, the automatic diagram forming tool can greatly improve the efficiency and accuracy of distribution network diagram mode management, assists in reducing the repeated working pressure of automatic personnel, and has important value and significance.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
fig. 1 is a structural diagram of a distribution network contact diagram automatic generation method in embodiment 1.
Fig. 2 is a topology node entry graph of the method for automatically generating a distribution network contact graph in embodiment 2.
Fig. 3 is a node route detail diagram of the distribution network contact diagram automatic generation method in embodiment 2.
Fig. 4 is a topological relation contact diagram of the distribution network contact diagram automatic generation method in embodiment 2.
Fig. 5 is a final power grid diagram of the distribution network contact diagram automatic generation method in embodiment 2.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and it will be appreciated by those skilled in the art that the present invention may be practiced without departing from the spirit and scope of the present invention and that the present invention is not limited by the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 and 2, a first embodiment of the present invention provides a method for automatically generating a distribution network contact diagram, where the method for automatically generating a distribution network contact diagram includes
Carrying out topology analysis on a distribution network topological structure, obtaining the contact topological relation of each line, obtaining all connected power supply paths, and establishing a contact topological model;
the crossing position of the distribution network lines in the generated graph is consistent with the actual trend, and a crossing place is built;
defining initial coordinates (x, y) of a first transformer substation, and defining the initial coordinates of each line according to outgoing lines of the transformer substation;
setting an equal difference interval difference, calculating coordinates (dx, dy) of opposite side connecting lines according to the line connection relation, and recursively generating a coordinate point matrix of each line;
and programming to generate a contact SVG or CAD contact graph according to the generated contact coordinate matrix of the regional distribution network.
The power distribution network topological structure is used for preprocessing the data entering the network, the preprocessing mode is to analyze an original CIM or XML data file into a data format which can be understood by the network topology, and the analyzed data is combined by six data modes, namely an edge number, an initial node type, an end node number, an end node type and an edge type.
The topological relation is stored in a tree structure, the storage structure table is sequentially arranged according to a tree table, a tree edge table and a tree node table in a database, then each branch is processed by a trunk branch model, and finally a feeder line is formed.
The forming mode of the feeder line is that firstly, the connection nodes are distributed in a tree state, and then data calculation preparation is carried out; in the data calculation preparation stage, the degree and weight value of each node in the tree are calculated, and leaf nodes and father nodes of the tree are identified; the method for identifying the weight of the feeder node is to perform leaf array identification based on a depth-first algorithm from a root node, perform priority access to the node with the maximum weight in the next nodes which are not accessed each time,
when the DFS accesses the node, judging whether the DFS has the child node or not, if not, displaying the weight of 0;
when the DFS access node has child nodes, solving the maximum weight value of the child nodes, adding the maximum weight value of the child nodes by the node calculation value, judging whether traversal is finished or not, and finishing the algorithm if the traversal is finished;
when the DFS access node has child nodes, solving the maximum weight value of the child nodes, adding the maximum weight value of the child nodes by the node calculation value, judging whether traversal is finished or not, and if the traversal is not finished, performing re-access;
the traversal end means that all child nodes of the node are visited;
the trunk line of the feeder line refers to the longest path that the first element in the leaf team traverses to the power bus, which is set as the primary trunk line of the feeder line.
The coordinate position of a node in the trunk is
x(V i )＝x(V root )+(w(V root )-w(V i ))*D min
Where (x (Vroot), y (Vroot)) is the coordinate position of the root node, and w (Vi) is the weight value of the node Vi, and the root node coordinate is set to (0,0) in the present invention.
The cross place of the node construction of the power distribution network is determined according to the branch number of the node,
when a node has a direction drawing problem, firstly judging branch lines of the node and then judging the number of arrangement;
when the branches of the nodes are even-level branches and the arrangement number is odd, the direction is downward;
when the branches of the nodes are even-level branches and the number of the branches is not odd, the direction is upward;
when the branches of the nodes are not even-numbered branches and the arrangement number is odd, the direction is towards the right;
when the node branches are not even-numbered branches and the number of the nodes is not odd, the direction is leftward.
In the automatic branch line drawing process, the proportion of the branch lines and the node balance degree of the two sides of the trunk line need to be considered;
the branch line proportion calculation is to judge the number of each branch line node in the total node of the branch line, when the proportion of one branch line node exceeds 0.5, the branch line is normally drawn automatically in the tree direction d, and all other branch lines are drawn in the direction opposite to the direction d;
the calculation of the balance degree of the nodes on two sides of the trunk line is that similar branches are arranged at two ends of the tree, and when the proportion of the nodes in the same direction exceeds 50% of the nodes of the branch, other branches automatically draw in the other direction of the branch. As an optimal scheme of the distribution network contact diagram automatic generation method, the method comprises the following steps: the programmed contact SVG or CAD contact graph is expressed in a python form after the distribution network contact graph is formed. In the distribution network contact graph forming process, the distance between each branch is equidistant, the distance between different nodes in each branch is the same, and the structure is shown in fig. 1.
In the distribution network contact diagram process, if the wiring diagram is too long, folding can be carried out, and the folding can be divided into secondary folding and primary folding;
the folding mode is that a main trunk line is found first, and then all 2-level branch lines in the main trunk line are found;
when the second-stage folding is selected, temporarily hiding all branches on the second-stage branch lines, and only leaving the main trunk line and the second-stage branch lines on the main trunk line;
when the first-level folding is selected, all the second-level branches of the main trunk are hidden on the basis of the second-level folding, and only the main trunk is left.
Example 2
Referring to fig. 2 to 5, a second embodiment of the present invention, which is different from the first embodiment, is: also included are. In the last embodiment, the method for automatically generating the distribution network contact diagram comprises the following steps.
The implementation of the method is to draw a distribution network contact diagram of the transformer substation, firstly, the node of the transformer substation is recorded, and as shown in fig. 2, each transformer substation is recorded into a system as a distribution network node.
Then, the route of the transformer substation is obvious, and as shown in fig. 3, after the transformer substation is subjected to data analysis, the branch line and route conditions of each transformer substation in the distribution network contact diagram are determined.
Then, the contact topological relation among all lines in the transformer substation is obtained, and as shown in fig. 4, after the branch lines of each transformer substation are determined, the topological relation among the branch lines is searched.
Finally, clicking the automatic mapping button, the distribution network contact map shown in fig. 5 can be formed.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A distribution network contact graph automatic generation method is characterized in that:
carrying out topology analysis on a distribution network topological structure, obtaining the contact topological relation of each line, obtaining all connected power supply paths, and establishing a contact topological model;
the crossing position of the distribution network lines in the generated graph is consistent with the actual trend, and a crossing place is built;
defining initial coordinates (x, y) of a first substation, and defining the initial coordinates of each line according to outgoing lines of the substation;
setting an equal difference interval difference, calculating coordinates (dx, dy) of opposite side connecting lines according to the line connection relation, and recursively generating a coordinate point matrix of each line;
and programming to generate a contact SVG or CAD contact graph according to the generated contact coordinate matrix of the regional power distribution network.
2. The distribution network contact map automatic generation method of claim 1, characterized by: the power distribution network topology structure is used for preprocessing the data entering the network, the preprocessing mode is that an original CIM or XML data file is analyzed and analyzed into a data format which can be understood by the network topology, and the analyzed data is combined by six data modes, namely edge numbers, initial node types, termination node numbers, termination node types and edge types.
3. The method for automatically generating a distribution network contact map according to claim 2, comprising: the topological relation is stored in a tree structure, the storage structure table is sequentially arranged according to a tree table, a tree edge table and a tree node table in a database, then each branch is processed by a trunk branch model, and finally a feeder line is formed.
4. The distribution network contact map automatic generation method of claim 3, characterized by: the feeder line is formed in a mode that firstly, communication nodes are distributed in a tree state, and then data calculation preparation is carried out;
the data calculation preparation stage is to calculate the degree and weight value of each node in the tree and identify leaf nodes and father nodes of the tree;
the feeder node weight identification mode is a leaf array identification mode based on a depth-first algorithm from a root node, wherein the highest-weight node in the next nodes which are not accessed is accessed with priority each time,
when the DFS accesses the node, judging whether the DFS has child nodes or not, and if not, displaying the weight of 0;
when the DFS access node has child nodes, solving the maximum weight value of the child nodes, adding the maximum weight value of the child nodes by the node calculation value, judging whether traversal is finished or not, and finishing the algorithm if the traversal is finished;
when the DFS access node has child nodes, solving the maximum weight value of the child nodes, adding the maximum weight value of the child nodes by the node calculation value, judging whether traversal is finished or not, and if the traversal is not finished, performing revisit;
the traversal end refers to all child nodes of the node which are visited completely;
the main line of the feeder line refers to the longest path from the first element in the leaf team to the power bus, and the main line is set as the primary main line of the feeder line.
5. The method for automatically generating a distribution network contact map according to any one of claims 1, 2 and 4, characterized in that: the coordinate position of a node in the trunk line is
x(V i )＝x(V root )+(w(V root )-w(V i ))*D min
Wherein, (x (V) root )，y(V root ) Is the coordinate position of the root node, and w (Vi) is the weight value of the node Vi, and the root node coordinate is set to (0,0) in the present invention.
6. The distribution network contact map automatic generation method of claim 5, characterized by: the cross place of the power distribution network node construction is determined according to the branch number of the node,
when a node has a direction drawing problem, firstly judging branch lines of the node and then judging the number of arrangement;
when the branches of the nodes are even-level branches and the number of the arranged branches is odd, the direction is downward;
when the branches of the nodes are even-level branches and the number of the branches is not odd, the direction is upward;
when the branches of the nodes are not even-numbered branches and the arrangement number is odd, the direction is towards the right;
when the node branches are not even-numbered branches and the number of the nodes is not odd, the direction is leftward.
7. The distribution network contact map automatic generation method of claim 6, characterized by: in the automatic branch line drawing process, the proportion of the branch lines and the node balance degree of the two sides of the trunk line need to be considered;
the branch line proportion calculation is to judge the number of branch line nodes occupying the total nodes of the branch line, when the proportion of one branch line node exceeds 0.5, the branch line is normally drawn automatically in the tree direction d, and all other branch lines are drawn in the direction opposite to the direction d;
and the calculation of the balance degree of the nodes on two sides of the trunk line is that similar branches are arranged at two ends of the tree, and when the proportion of the nodes in the same direction exceeds 50% of the nodes of the branch, other branches automatically draw in the other direction of the branch.
8. The method for automatically generating a distribution network contact map according to claim 6 or 7, characterized in that: the programming generation of the contact SVG or CAD contact graph is expressed in a python form after the distribution network contact graph is formed.
9. The distribution network contact map automatic generation method of claim 8, characterized by: in the distribution network contact graph forming process, the distance between each branch is equidistant, and the distance between different nodes in each branch is the same.
10. The distribution network contact map automatic generation method according to any one of claims 1, 2, 4, 6, 7 and 9, characterized by: in the distribution network contact diagram process, if the wiring diagram is too long, folding can be carried out, and the folding can be divided into secondary folding and primary folding;
the folding mode is that a main trunk line is found first, and then all 2-level branch lines in the main trunk line are found;
when the second-stage folding is selected, temporarily hiding all branches on the second-stage branch lines, and only leaving the main trunk line and the second-stage branch lines on the main trunk line;
when the first-level folding is selected, all the second-level branches of the main trunk are hidden on the basis of the second-level folding, and only the main trunk is left.
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