CN115912355A - Method, device, equipment and medium for dividing power supply area of transformer substation - Google Patents
Method, device, equipment and medium for dividing power supply area of transformer substation Download PDFInfo
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Abstract
The invention discloses a method, a device, equipment and a medium for dividing a power supply area of a transformer substation, and relates to the technical field of data processing. The method comprises the following steps: determining graph characteristic representation of the power network according to topological connection relation among the transformer substations in the power network and output power and load power of the transformer substations; and according to the characteristic representation of the graph, dividing power supply areas to be divided corresponding to the power network to obtain target power supply areas of the substation in the power network. By adopting the technical scheme, the power supply area to be divided of the transformer substation is divided by comprehensively considering the topological connection relation among the transformer substations, the output power and the load power of the transformer substations, so that the target power supply area of the transformer substation is obtained, and the rationality for dividing the target power supply area is improved.
Description
Technical Field
The invention relates to the technical field of data processing, in particular to a method, a device, equipment and a medium for dividing a power supply area of a transformer substation.
Background
With the increasing access requirements of urban power distribution networks, it becomes more and more important to reasonably distribute the power supply areas of the transformer substations.
In the prior art, an intelligent optimization algorithm is generally adopted for dividing a power supply area, and a target function, a weighted V-chart, an alternate positioning algorithm and the like are combined to divide the power supply area.
Disclosure of Invention
The invention provides a method, a device, equipment and a medium for dividing a power supply area of a transformer substation, which are used for improving the rationality of dividing a target power supply area.
According to an aspect of the present invention, a method for dividing a substation power supply area is provided, including:
determining a graph characteristic representation of the power network according to a topological connection relation among the transformer substations in the power network, and the output power and the load power of the transformer substations;
and dividing the power supply area to be divided corresponding to the power network according to the graph characteristic representation to obtain a target power supply area of the substation in the power network.
According to another aspect of the present invention, there is provided a partitioning apparatus for a substation power supply area, including:
the system comprises a graph characteristic representation determining module, a graph characteristic representation determining module and a graph characteristic representation determining module, wherein the graph characteristic representation determining module is used for determining graph characteristic representation of the power network according to topological connection relation among transformer substations in the power network, and output power and load power of the transformer substations;
and the power supply area determining module is used for dividing the power supply area to be divided corresponding to the power network according to the graph characteristic representation to obtain a target power supply area of the substation in the power network.
According to another aspect of the present invention, there is provided an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores a computer program executable by the at least one processor, the computer program being executable by the at least one processor to enable the at least one processor to perform a method of partitioning a substation power supply area according to any of the embodiments of the present invention.
According to another aspect of the present invention, there is provided a computer-readable storage medium storing computer instructions for causing a processor to implement a method for partitioning a substation power supply area according to any one of the embodiments of the present invention when the computer instructions are executed.
According to the technical scheme of the embodiment of the invention, the graph characteristic representation of the power network is determined according to the topological connection relation among the transformer substations in the power network and the output power and the load power of the transformer substations; according to the characteristic representation of the graph, the power supply areas to be divided corresponding to the power network are divided to obtain the target power supply area of the substation in the power network. By adopting the technical scheme, the power supply area to be divided of the transformer substation is divided by comprehensively considering the topological connection relation among the transformer substations, the output power and the load power of the transformer substations, so that the target power supply area of the transformer substation is obtained, and the rationality for dividing the target power supply area is improved.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in 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 creative efforts.
Fig. 1 is a flowchart of a method for dividing a substation power supply area according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for dividing a substation power supply area according to a second embodiment of the present invention;
fig. 3 is a flowchart of a method for dividing a power supply area of a substation according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a partitioning device of a substation power supply area according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device that implements the method for dividing the power supply area of the substation according to the embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of the present invention and the above-described drawings, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In addition, in the technical scheme of the invention, the collection, storage, use, processing, transmission, provision, disclosure and other processes of the topological connection relationship among the transformer stations in the power network meet the regulations of relevant laws and regulations without violating the customs of the public order.
Example one
Fig. 1 is a flowchart of a method for dividing a power supply area of a substation according to an embodiment of the present invention, where this embodiment is applicable to a case of dividing a power supply area of a substation in a power network, and the method may be executed by a dividing apparatus of the power supply area of the substation, where the dividing apparatus of the power supply area of the substation may be implemented in hardware and/or software, and the dividing apparatus of the power supply area of the substation may be configured in an electronic device, for example, a server.
As shown in fig. 1, the method includes:
s101, according to the topological connection relation among the transformer substations in the power network and the output power and the load power of the transformer substations, the graph characteristic representation of the power network is determined.
In this embodiment, the topological connection relationship between the substations in the power network may be a line connection relationship between the substations in a power supply area to be divided, which corresponds to the power network; the graph-characteristic representation of the power network may be used to characterize the connectivity characteristics between substations in the power network, which may be in the form of a matrix or vector.
Specifically, a certain algorithm is adopted to determine the graph feature representation of the power network according to the line connection relationship between the substations in the power supply area to be divided corresponding to the power network, and the output power and the load power of each substation, for example, a convolutional neural network may be adopted to learn the line connection relationship between the substations in the power supply area to be divided corresponding to the power network, and the output power and the load power of each substation, so as to obtain the graph feature representation of the power network.
And S102, dividing power supply areas to be divided corresponding to the power network according to the graph characteristic representation to obtain target power supply areas of the transformer substation in the power network.
In this embodiment, the power supply area to be divided may be a power supply area to be divided corresponding to the power network; the target power supply area may be a power supply area of the substation after the division is completed.
Specifically, the graph characteristic representation of the power network is clustered to obtain clustering results, and power supply areas to be partitioned corresponding to the power network are partitioned according to the clustering results to obtain target power supply areas of the transformer substation in the power network. For example, if the clustering result includes 3 categories, the power supply area to be divided corresponding to the power network is divided into 3 target power supply areas, and then the transformer substation in each target power supply area supplies power to the power consumers in the corresponding target power supply area.
According to the embodiment of the invention, graph characteristic representation of the power network is determined according to the topological connection relation among the transformer substations in the power network and the output power and the load power of the transformer substations; and according to the characteristic representation of the graph, dividing power supply areas to be divided corresponding to the power network to obtain target power supply areas of the substation in the power network. By adopting the technical scheme, the power supply area to be divided of the transformer substation is divided by comprehensively considering the topological connection relation among the transformer substations, the output power and the load power of the transformer substations, so that the target power supply area of the transformer substation is obtained, and the rationality for dividing the target power supply area is improved.
Example two
Fig. 2 is a flowchart of a method for dividing a substation power supply area according to a second embodiment of the present invention, and this embodiment optimizes and improves the determination operation of the graph characteristic representation of the power network on the basis of the second embodiment.
Further, the graph characteristic representation of the power network is determined according to the topological connection relation among the transformer stations in the power network and the output power and the load power of the transformer stations, and is refined into the line weight of the lines in the power network according to the topological connection relation among the transformer stations in the power network; determining the node weight of a transformer substation in the power network according to the output power and the load power of the transformer substation; determining a graph-characterizing representation "of the power network based on the line weights and the node weights to complete the determining operation of the graph-characterizing representation of the power network.
In the embodiments of the present invention, reference may be made to the description of the foregoing embodiments, which are not described in detail.
As shown in fig. 2, the method includes:
s201, determining the line weight of the lines in the power network according to the topological connection relation among the transformer substations in the power network.
In this embodiment, the line weight of the line in the power network may be used to represent the importance degree of the line between the substations in the power network, and may be represented in a matrix or vector form.
Optionally, determining the line weight of the line in the power network according to the topological connection relationship between the substation in the power network includes: determining the edge betweenness of the power network according to the topological connection relation among the transformer stations in the power network; and determining the line weight of the line in the power network according to the edge betweenness and the active power flow value of the line in the power network.
The edge betweenness of the power network can be used for representing the importance degree of a line between every two substations in the power network; the power flow active power value can be an active power value of a line between every two transformer substations in the steady-state operation of the power network.
Specifically, for every two substations in the power network, if the two substations are directly connected, the ratio of the number of shortest lines between all substations passing through the lines between the two substations in the power network to the number of shortest lines between all substations is used as the edge betweenness of the lines between the two substations; multiplying the edge betweenness between the two substations by a preset edge weight to obtain a weighted edge betweenness between the two substations; multiplying the power flow active power value between the two transformer substations by a preset power weight to obtain a weighted power flow active power value between the two transformer substations; the sum of the weighted power flow active power value and the weighted edge betweenness between the two transformer substations is used as the line weight of the line between the two transformer substations in the power network; if the two substations are not directly connected, the line weight between the two substations is zero.
For example, the line weight of a line in the power network may be determined by the following formula:
B ij ＝v 1 ·P ij +v 2 ·M ij ；
wherein W represents a line weight of a line in the power network; w ij Representing the line weight between substation i and substation j; n is the total number of transformer substations in the power network; b is ij Representing the line weight between the transformer substation i and the transformer substation j when the transformer substation i and the transformer substation j are directly connected; v. of 1 Representing a preset power weight; v. of 2 Representing a preset edge weight; p ij Representing the power flow value of a line between a transformer substation i and a transformer substation j; m is a group of ij And the edge betweenness of the lines between the substation i and the substation j is shown.
It can be understood that, by adopting the above technical scheme, the line weight of the line in the power network is determined according to the edge betweenness number and the active power value of the power flow, so that the importance degree of the line between every two substations represented by the line weight of the line in the power network is the tightness degree of the two substations, the rationality of the line weight is improved, the rationality of the graph characteristic representation determined according to the line weight and the node weight is further improved, and the rationality of the target power supply area of the substation in the power network obtained according to the graph characteristic representation is improved.
S202, determining the node weight of the transformer substation in the power network according to the output power and the load power of the transformer substation.
In this embodiment, the node weight is used to represent the importance degree of the substation in the power network.
Specifically, for each transformer substation in the power network, multiplying the load power of the transformer substation by the preset load weight of the transformer substation to obtain the weighted load power of the transformer substation; and taking the difference value of the output power of the transformer substation and the weighted load power of the transformer substation as the node weight of the transformer substation. For example, the node weight of a substation in the power network may be determined by the following formula:
u i ＝P G_i -α i P D_i ；
wherein u is i Representing the node weight of substation i; p G_i Representing the output power of substation i; alpha (alpha) ("alpha") i Representing a preset load weight of the substation i; p D_i Representing the load power of substation i.
It should be noted that the preset load factor of each substation may be set by a technician according to actual needs or practical experience, which is not limited in the present invention.
And S203, determining the graph characteristic representation of the power network according to the line weight and the node weight.
Specifically, the graph characterization representation of the power network may be determined in the form of a laplacian matrix according to the line weights and the node weights.
In an alternative embodiment, the graphical representation of the power network may take the form of a non-standardized laplacian matrix. In the graph characteristic representation of the power network, the characteristic point value corresponding to each transformer substation to the transformer substation is the node weight of the transformer substation; for the characteristic point value corresponding to each substation to other substations in the power network, if the substation is directly connected with other substations, the characteristic point value corresponding to the substation to other substations is the negative number of the line weight of the line between the substation and other substations; and if the transformer substation is not directly connected with other transformer substations, the corresponding characteristic point value from the transformer substation to other transformer substations is zero. Illustratively, a graph characterization of the power network in the form of a non-normalized laplacian matrix may be determined by the following equation:
wherein L represents a graph-feature representation of the power network in the form of a non-standardized laplace matrix; l is a radical of an alcohol ij The characteristic point values corresponding to substation i to substation j in the diagram characteristic representation L representing the power network; u. u i Representing the node weight of substation i; b is ij Representing the line weight of the line between substation i and substation j.
In another alternative embodiment, the graphical representation of the power network may take the form of a standardized laplacian matrix. In the diagram feature representation of the power network, the feature point value corresponding to each transformer substation to the transformer substation is one; for a characteristic point value corresponding to each substation to other substations in the power network, if the substation is directly connected with other substations, determining the negative number of the line weight of the line between the substation and other substations, determining the product of the corresponding node weight of the substation and the corresponding node weight of other substations, and opening a root number for the product; taking the ratio of the negative number of the line weight and the product of the root number as a characteristic point value corresponding to the transformer substation to other transformer substations; and if the transformer substation is not directly connected with other transformer substations, the corresponding characteristic point value of the transformer substation and the other transformer substations is zero. Illustratively, a graph characterization of a power network in the form of a normalized laplace can be determined by the following equation:
wherein L' represents a graph-feature representation of a standardized laplace-form power network; l is a radical of an alcohol i ′ j The graph characteristic of the power network representing the standardized Laplace form represents a characteristic point value corresponding to a transformer substation i to a transformer substation j; b is ij To representThe line weight of the line between the transformer substation i and the transformer substation j; u. of i Representing the node weight of substation i; u. of j Representing the node weight of substation j.
And S204, dividing the power supply areas to be divided corresponding to the power network according to the graph characteristic representation to obtain the target power supply area of the substation in the power network.
According to the method and the device, the line weight of the line in the power network is determined according to the topological connection relation among the transformer substations in the power network; determining the node weight of a transformer substation in the power network according to the output power and the load power of the transformer substation; from the line weights and the node weights, a graph characterization representation of the power network is determined. According to the characteristic representation of the graph, the power supply areas to be divided corresponding to the power network are divided to obtain the target power supply area of the substation in the power network. By adopting the technical scheme, the space characteristics among the substations and the power supply characteristics of the substations can be fully represented by the graph characteristic representation of the power network, and the reasonability of the target power supply area of the substations in the power network obtained according to the graph characteristic representation is improved.
EXAMPLE III
Fig. 3 is a flowchart of a method for dividing a power supply area of a substation according to a third embodiment of the present invention, and in this embodiment, a target power supply area of the substation in a power network is optimized and improved on the basis of the third embodiment.
Further, the method for determining the power supply area of the substation in the power network comprises the steps of subdividing the power supply area to be divided corresponding to the power network according to the graph characteristic representation to obtain the target power supply area of the substation in the power network into the steps of dividing the power supply area to be divided corresponding to the power network according to the graph characteristic representation and the area division constraint condition to obtain the target power supply area of the substation in the power network, so that the determination operation of the target power supply area of the substation in the power network is completed.
In the embodiments of the present invention, reference may be made to the description of the foregoing embodiments, which are not described in detail.
As shown in fig. 3, the method includes:
s301, according to the topological connection relation among the transformer substations in the power network and the output power and the load power of the transformer substations, determining the graph characteristic representation of the power network.
And S302, dividing the power supply area to be divided corresponding to the power network according to the graph characteristic representation and the area division constraint condition to obtain a target power supply area of the substation in the power network.
In this embodiment, the area division constraint condition may be a condition that limits the division of the power supply area to be divided corresponding to the power network.
Optionally, the dividing, according to the graph feature representation and the area division constraint condition, the power supply area to be divided corresponding to the power network to obtain the target power supply area of the substation in the power network includes: clustering the graph characteristic representation of the power network to obtain a clustering result; and dividing the power supply area to be divided corresponding to the power network according to the clustering result and by considering the area division constraint condition to obtain the target power supply area of the transformer substation in the power network.
Specifically, the graph feature representation of the power network can be clustered to obtain a clustering result; and dividing the power supply area to be divided corresponding to the power network according to the clustering result represented by the graph characteristics of the power network, and taking the divided area meeting the area division constraint condition as a target power supply area of the power network type transformer substation.
Optionally, the dividing, according to the graph feature representation and the area division constraint condition, the power supply area to be divided corresponding to the power network to obtain the target power supply area of the substation in the power network includes: determining at least one characteristic value corresponding to the graph characteristic representation and a characteristic vector corresponding to the characteristic value; according to the at least one characteristic value and the characteristic vector corresponding to the characteristic value, substation area characteristics of the power supply area to be divided corresponding to the power network are constructed; clustering the regional characteristics of the transformer substation by adopting a preset clustering algorithm to obtain a candidate power supply region of the transformer substation in the power network; and checking whether the transformer substation information in the candidate power supply area meets the area division constraint condition, and adjusting the candidate power supply area of the transformer substation in the power network according to the check result to obtain the target power supply area of the transformer substation in the power network.
The transformer substation area characteristics are used for representing characteristics of power supply areas to be divided corresponding to the power network and can be represented in a matrix or vector mode; the candidate power supply area can be an area obtained by dividing the power supply area to be divided according to the clustering result of the transformer substation area characteristics; the preset clustering algorithm can be set by technicians according to actual needs or practical experience, but the preset clustering algorithm is not limited in the invention, and the clustering algorithm can be a K-Means clustering algorithm (K-Means clustering algorithm), a mean shift clustering algorithm, an agglomeration level clustering algorithm and the like.
Specifically, determining all characteristic values represented by the graph characteristics and characteristic vectors corresponding to all the characteristic values; determining the number of zero eigenvalues of which the eigenvalues are zero in all eigenvalues represented by the graph characteristics; if the number of the zero eigenvalues is at least two, taking a matrix formed by eigenvectors corresponding to the zero eigenvalues as substation area characteristics; if the number of the zero eigenvalues is one, sorting other eigenvalues in an ascending order according to the sizes, selecting eigenvectors corresponding to a preset number of smaller eigenvalues, and taking a matrix formed by the preset number of eigenvectors as the regional characteristics of the transformer substation; clustering the regional characteristics of the transformer substation by adopting a preset clustering algorithm, and dividing a power supply region to be divided corresponding to the power network according to a clustering result to obtain a candidate power supply region; verifying whether the transformer substation information in the candidate power supply area meets an area division constraint condition or not; the verification result of the candidate power supply area of which the transformer substation information meets the area division constraint condition is that the verification is passed; the verification result of the candidate power supply area of which the transformer substation information does not meet the area division constraint condition is that the verification is not passed; and adjusting the candidate power supply area with the verification result of failing to pass the verification so that the substation information of the candidate power supply area with the verification result of failing to pass the verification meets the area division constraint condition, and determining the adjusted candidate power supply area with the verification result of failing to pass the verification and the candidate power supply area with the verification result of passing the verification as the target power supply area of the substation in the power network.
The substation information in the candidate power supply area comprises at least one of the following items: substation size, output power and total capacity of substations in the candidate power supply area.
In an optional embodiment, after the transformer substation area features are clustered to obtain each candidate power supply area, uniformly verifying whether transformer substation information in each candidate power supply area meets an area division constraint condition, and adjusting the candidate power supply area with a verification result of failed verification; and determining the adjusted verification result as a candidate power supply area which cannot be verified, and the candidate power supply area which passes the verification as a target power supply area of the substation in the power network.
In another optional embodiment, when the transformer substation area features are clustered, each time a candidate power supply area is obtained, whether transformer substation information in the candidate power supply area meets an area division constraint condition is checked, and if the check result is that the check is not passed, the candidate power supply area is adjusted; and determining the adjusted verification result as a candidate power supply area which is not verified and the adjusted verification result as a candidate power supply area which is verified to be passed as a target power supply area of the substation in the power network.
It can be understood that by adopting the technical scheme, the regional characteristics of the transformer substation are determined, and the candidate power supply region is determined according to the regional characteristics of the transformer substation and the preset clustering algorithm; and checking the candidate power supply areas, and adjusting the candidate power supply areas according to a checking result to obtain a target power supply area of the substation in the power network, so that the rationality of dividing the target power supply area is improved.
Optionally, the region division constraint condition includes at least one of: the scale of the substation in the power supply area is less than or equal to a set scale threshold; the output power of the transformer substation in the power supply area is greater than or equal to the load active power value of the transformer substation in the power supply area; the ratio between the total capacity of the substations in the power supply area and the total load value of the substations in the power supply area is equal to the set value.
The scale of the transformer substation can be the maximum value of the shortest distance between the corresponding transformer substation and other transformer substations; the set size threshold may be set autonomously by a technician according to actual needs and practical experience, which is not limited by the present invention.
Specifically, the size of the substation in the power supply area is smaller than or equal to the set size threshold, which is to be understood that the size of each substation in the power supply area is smaller than or equal to the set size threshold, that is, the maximum value of the shortest distance between each substation and other substations in the power supply area is smaller than or equal to the set size threshold. For example, the area division constraint condition may be expressed by the following formula, that is, the size of the substation in the power supply area is smaller than or equal to the set size threshold:
maxm ij ≤U max ,i＝1,2,···N,j＝1,2,···N；
wherein m is ij Representing the shortest distance between the substation i and the substation j; u shape max Indicating a set size threshold and N indicating the total number of substations in the power supply area.
Specifically, the output power of the substation in the power supply area is greater than or equal to the load active power value of the substation in the power supply area, which means that the total output power of all substations in the power supply area is greater than or equal to the total load active power value of all substations in the power supply area. Illustratively, the region division constraint may be expressed by the following formula:
wherein N represents the total number of substations in the power supply area; p is G_i Representing the output power value of substation i; p D_i Representing the load active power value of substation i.
Specifically, the ratio between the total capacity of the substations in the power supply area and the total load value of the substations in the power supply area is equal to the set value, which is to be understood as that the ratio between the total capacity of all the substations in the power supply area and the total load value of all the substations in the power supply area is equal to the set value, wherein the set value can be set autonomously by a technician according to actual needs or practical experience, and the present invention is not limited thereto. Illustratively, the region division constraint may be expressed by the following formula:
wherein S represents a total capacity of the substation in the power supply area; p is i Representing the load value of substation i; n represents the total number of substations in the power supply area; k represents a set value.
It can be understood that, by adopting the technical scheme, the area division constraint condition that the substation scale in the power supply area is smaller than or equal to the set scale threshold can prevent the scale of the target power supply area from being too large, and improve the rationality of the division of the target power supply area; the region division constraint condition that the output power of the transformer substation in the power supply region is greater than or equal to the load active power value of the transformer substation in the power supply region can ensure that enough load exists in the target power supply region, so that the target power supply region can run stably, and the rationality of the division of the target power supply region is improved; the regional division constraint condition that the ratio between the total capacity of the transformer substation in the power supply region and the total load value of the transformer substation in the power supply region is equal to the set value can prevent the transformer substation capacity of the target power supply region from being too large, and improves the rationality for dividing the target power supply region.
According to the method, the graph characteristic representation of the power network is determined according to the topological connection relation among the transformer substations in the power network and the output power and the load power of the transformer substations; and dividing the power supply area to be divided corresponding to the power network according to the graph characteristic representation and the area division constraint condition to obtain a target power supply area of the substation in the power network. By adopting the technical scheme, the division of the target power supply area can be restricted through the area division restriction condition, the power supply effect of the divided target power supply area is prevented from being unsatisfactory, and the rationality for dividing the target power supply area is improved.
Example four
Fig. 4 is a schematic structural diagram of a method for dividing a power supply area of a substation according to a fourth embodiment of the present invention. The present embodiment is applicable to a case of dividing a power supply area of a substation in a power network, where the dividing apparatus of the power supply area of the substation may be implemented in the form of hardware and/or software, and the dividing apparatus of the power supply area of the substation may be configured in an electronic device, such as a server.
As shown in fig. 4, the apparatus includes: the diagram features a determination module 401 and a power supply area determination module 402, wherein,
a graph characteristic representation determining module 401, configured to determine a graph characteristic representation of the power network according to a topological connection relationship between the substations in the power network, and output power and load power of the substations;
and a power supply area determining module 402, configured to divide a power supply area to be divided corresponding to the power network according to the graph characteristic representation, so as to obtain a target power supply area of the substation in the power network.
According to the embodiment of the application, the graph characteristic representation of the power network is determined by a graph characteristic representation determining module according to the topological connection relation among the transformer substations in the power network, and the output power and the load power of the transformer substations; and dividing the power supply area to be divided corresponding to the power network according to the characteristic representation of the graph through a power supply area determining module to obtain a target power supply area of the substation in the power network. By adopting the technical scheme, the power supply area to be divided of the transformer substation is divided by comprehensively considering the topological connection relation among the transformer substations, the output power and the load power of the transformer substations to obtain the target power supply area of the transformer substation, and the rationality of dividing the target power supply area is improved.
Optionally, the graph feature representation determining module 401 includes:
the circuit weight determining unit is used for determining the circuit weight of the circuit in the power network according to the topological connection relation among the transformer substations in the power network;
the node weight determining unit is used for determining the node weight of the transformer substation in the power network according to the output power and the load power of the transformer substation;
a graph characteristic representation determining unit for determining a graph characteristic representation of the power network based on the line weights and the node weights.
Optionally, the line weight determining unit includes:
the edge betweenness determining subunit is used for determining the edge betweenness of the power network according to the topological connection relation among the transformer substations in the power network;
and the line weight determining subunit is used for determining the line weight of the line in the power network according to the edge betweenness and the power flow active power value of the line in the power network.
Optionally, the power supply area determining module 402 includes:
and the power supply area determining unit is used for dividing the power supply area to be divided corresponding to the power network according to the graph characteristic representation and the area division constraint condition to obtain a target power supply area of the substation in the power network.
Optionally, the power supply area determining unit includes:
the characteristic value determining subunit is used for determining at least one characteristic value corresponding to the graph characteristic representation and a characteristic vector corresponding to the characteristic value;
the regional characteristic determining subunit is used for constructing substation regional characteristics of a power supply region to be divided corresponding to the power network according to the at least one characteristic value and the characteristic vector corresponding to the characteristic value;
the candidate power supply area determining subunit is used for clustering the transformer substation area characteristics by adopting a preset clustering algorithm to obtain candidate power supply areas of the transformer substations in the power network;
and the target power supply area determining subunit is used for verifying whether the transformer substation information in the candidate power supply area meets the area division constraint condition, and adjusting the candidate power supply area of the transformer substation in the power network according to the verification result to obtain the target power supply area of the transformer substation in the power network.
Optionally, the target power supply region determines a subunit, where the region division constraint condition includes at least one of:
the scale of the transformer substation in the power supply area is smaller than or equal to a set scale threshold value;
the output power of the transformer substation in the power supply area is greater than or equal to the load active power value of the transformer substation in the power supply area;
the ratio between the total capacity of the substations in the power supply area and the total load value of the substations in the power supply area is equal to the set value.
Optionally, the target power supply area determines the subunit, where the substation information in the candidate power supply area includes at least one of the following: substation size, output power and total capacity of substations in the candidate power supply area.
The device for dividing the power supply area of the transformer substation, provided by the embodiment of the invention, can execute the method for dividing the power supply area of the transformer substation, provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects for executing the method for dividing the power supply area of each transformer substation.
EXAMPLE five
FIG. 5 illustrates a schematic diagram of an electronic device 10 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device may also represent various forms of mobile devices, such as personal digital assistants, cellular phones, smart phones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 5, the electronic device 10 includes at least one processor 11, and a memory communicatively connected to the at least one processor 11, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, and the like, wherein the memory stores a computer program executable by the at least one processor, and the processor 11 can perform various suitable actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from a storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data necessary for the operation of the electronic apparatus 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
A number of components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, or the like; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network such as the internet and/or various telecommunication networks.
Processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, a Digital Signal Processor (DSP), and any suitable processor, controller, microcontroller, or the like. The processor 11 performs the various methods and processes described above, such as the division method of the power supply area of the substation.
In some embodiments, the method of partitioning the power supply area of the substation may be implemented as a computer program tangibly embodied in a computer readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the above described method of partitioning the power supply area of the substation may be performed. Alternatively, in other embodiments, the processor 11 may be configured by any other suitable means (e.g. by means of firmware) to perform the division method of the power supply area of the substation.
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuitry, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), system on a chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be performed. A computer program can execute entirely on a machine, partly on a machine, as a stand-alone software package partly on a machine and partly on a remote machine or entirely on a remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. A computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic, speech, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a back-end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back-end, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical host and VPS service are overcome.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present invention may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired results of the technical solution of the present invention can be achieved.
The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for dividing a power supply area of a transformer substation is characterized by comprising the following steps:
determining a graph characteristic representation of the power network according to a topological connection relation among the transformer substations in the power network, and the output power and the load power of the transformer substations;
and dividing the power supply area to be divided corresponding to the power network according to the graph characteristic representation to obtain a target power supply area of the substation in the power network.
2. The method of claim 1, wherein determining the graph-characteristic representation of the power network from topological connection relationships between substations in the power network, output power and load power of the substations comprises:
determining the line weight of the lines in the power network according to the topological connection relation among the transformer stations in the power network;
determining the node weight of a transformer substation in the power network according to the output power and the load power of the transformer substation;
determining a graph characterization representation of the electrical power network from the line weights and the node weights.
3. The method of claim 2, wherein determining the line weights of the lines in the power network according to the topological connection relationship between the substation in the power network comprises:
determining the edge betweenness of the power network according to the topological connection relation among the transformer stations in the power network;
and determining the line weight of the line in the power network according to the edge betweenness and the active power flow value of the line in the power network.
4. The method according to claim 1, wherein the dividing the power supply area to be divided corresponding to the power network according to the graph characterization representation to obtain a target power supply area of a substation in the power network comprises:
and dividing the power supply area to be divided corresponding to the power network according to the graph characteristic representation and the area division constraint condition to obtain a target power supply area of the substation in the power network.
5. The method according to claim 4, wherein the dividing the power supply area to be divided corresponding to the power network according to the graph feature representation and the area division constraint condition to obtain a target power supply area of the substation in the power network comprises:
determining at least one characteristic value corresponding to the graph characteristic representation and a characteristic vector corresponding to the characteristic value;
according to at least one characteristic value and a characteristic vector corresponding to the characteristic value, substation area characteristics of a power supply area to be divided corresponding to the power network are constructed;
clustering the regional characteristics of the transformer substation by adopting a preset clustering algorithm to obtain a candidate power supply region of the transformer substation in the power network;
and checking whether the transformer substation information in the candidate power supply area meets an area division constraint condition, and adjusting the candidate power supply area of the transformer substation in the power network according to a check result to obtain a target power supply area of the transformer substation in the power network.
6. The method of claim 5, wherein the region partitioning constraints comprise at least one of:
the scale of the transformer substation in the power supply area is smaller than or equal to a set scale threshold value;
the output power of the transformer substation in the power supply area is greater than or equal to the load active power value of the transformer substation in the power supply area;
the ratio between the total capacity of the substations in the power supply area and the total load value of the substations in the power supply area is equal to the set value.
7. The method of claim 5, wherein substation information in the candidate power supply area comprises at least one of: substation size, output power and total capacity of substations in the candidate power supply area.
8. A dividing device for a power supply area of a transformer substation is characterized by comprising:
the system comprises a graph characteristic representation determining module, a graph characteristic representation determining module and a graph characteristic representation determining module, wherein the graph characteristic representation determining module is used for determining graph characteristic representation of the power network according to topological connection relation among transformer substations in the power network, and output power and load power of the transformer substations;
and the power supply area determining module is used for dividing the power supply area to be divided corresponding to the power network according to the graph characteristic representation to obtain a target power supply area of the substation in the power network.
9. An electronic device, characterized in that the electronic device comprises:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the method of partitioning a substation power supply area of any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that it stores computer instructions for causing a processor to implement the method of dividing a substation power supply area of any of claims 1-7 when executed.
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| CN202211596547.3A CN115912355A (en) | 2022-12-12 | 2022-12-12 | Method, device, equipment and medium for dividing power supply area of transformer substation |
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