CN111985822A - Method and device for determining evaluation index weight of high-voltage distribution network - Google Patents

Method and device for determining evaluation index weight of high-voltage distribution network Download PDF

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CN111985822A
CN111985822A CN202010858732.XA CN202010858732A CN111985822A CN 111985822 A CN111985822 A CN 111985822A CN 202010858732 A CN202010858732 A CN 202010858732A CN 111985822 A CN111985822 A CN 111985822A
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曹军太
王海龙
杨丹
朱虹冰
熊国玺
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Haixi Power Supply Co Of State Grid Qinghai Electric Power Co
State Grid Corp of China SGCC
State Grid Qinghai Electric Power Co Ltd
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Haixi Power Supply Co Of State Grid Qinghai Electric Power Co
State Grid Corp of China SGCC
State Grid Qinghai Electric Power Co Ltd
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Abstract

The invention discloses a method and a device for determining evaluation index weight of a high-voltage distribution network. The invention comprises the following steps: determining a target wiring mode; determining a plurality of indexes corresponding to the target wiring mode according to the target wiring mode, wherein the plurality of indexes are same-layer indexes; determining a judgment matrix corresponding to the multiple indexes according to the multiple indexes; and determining each index for calculating the weight value of the target wiring mode according to the judgment matrix. The invention solves the technical problem that the wiring mode of the urban distribution network in the related technology has no clear selection basis.

Description

Method and device for determining evaluation index weight of high-voltage distribution network
Technical Field
The invention relates to the field of power grid planning, in particular to a method and a device for determining evaluation index weight of a high-voltage power distribution network.
Background
In the planning process of the urban power distribution network, the selection of the wiring mode is an important link, and the wiring mode plays an important role in the overall planning of the power distribution network. With the increasing importance on the construction of the power distribution network, the research on the wiring mode is deepened more and more, the research on the power distribution network is started earlier internationally, the power distribution network is optimized by taking economic benefits as a target function, taking system flow, system capacity and a network structure as constraint conditions and adopting a plurality of optimization algorithms such as a genetic algorithm, an evolutionary algorithm and a fuzzy algorithm, and the development direction of the wiring mode of the power distribution network is examined from the aspects of reliability, economy, voltage sag and the like.
In the related technology, the theoretical research on the connection mode of the high-voltage distribution network in China mainly focuses on researching the reliability and the economy of various connection modes, the technical principle is wide in connection mode selection, the locality and the pertinence are lacked, and a specific method for evaluating the connection mode through indexes and weights corresponding to the indexes is not available.
In view of the above problems in the related art, no effective solution has been proposed.
Disclosure of Invention
The invention mainly aims to provide a method and a device for determining evaluation index weight of a high-voltage distribution network, so as to solve the technical problem that the wiring mode of an urban distribution network in the related technology has no clear selection basis.
In order to achieve the above object, according to one aspect of the present invention, there is provided a method of determining a weight of an evaluation index of a high voltage distribution network. The invention comprises the following steps: determining a target wiring mode; determining a plurality of indexes corresponding to the target wiring mode according to the target wiring mode, wherein the plurality of indexes are same-layer indexes; determining a judgment matrix corresponding to the multiple indexes according to the multiple indexes; and determining each index for calculating the weight value of the target wiring mode according to the judgment matrix.
Further, after determining a plurality of indexes corresponding to the target wiring mode according to the target wiring mode, and before determining a judgment matrix corresponding to the plurality of indexes according to the plurality of indexes, the method includes: and comparing the indexes pairwise to obtain a reciprocal scale matrix, wherein the reciprocal scale matrix is used for expressing the size relation among the indexes.
Further, comparing the plurality of indexes pairwise to obtain a judgment matrix includes: acquiring a plurality of scale values corresponding to a plurality of indexes through a preset scale table; and combining a plurality of scale values into the reciprocal scale matrix to obtain a judgment matrix.
Further, before determining each index for calculating a weight value of the target wiring mode according to the judgment matrix, the method further includes: acquiring the order of a judgment matrix; calculating the maximum characteristic root of the judgment matrix; and calculating the consistency index of the judgment matrix according to the maximum characteristic root and the order of the judgment matrix.
Further, after calculating the consistency index of the judgment matrix according to the maximum feature root and the order of the judgment matrix, the method comprises the following steps: determining an average random consistency index of the judgment matrix according to the order of the judgment matrix; and calculating the random consistency index according to the consistency index and the average random consistency index.
Further, according to the judgment matrix, determining the weight value of each index for calculating the target wiring mode includes: judging whether the random consistency index of the judgment matrix meets the consistency requirement: if the random consistency index is smaller than the preset value, determining that the random consistency index meets the consistency requirement; and when the random consistency index of the judgment matrix meets the consistency requirement, determining the weight value of the judgment matrix.
In order to achieve the above object, according to another aspect of the present invention, there is provided an apparatus for determining a weight of an evaluation index of a high voltage distribution network. The device includes: a first determination unit for determining a target wiring pattern; the second determining unit is used for determining a plurality of indexes corresponding to the target wiring mode according to the target wiring mode, wherein the plurality of indexes are same-layer indexes; the third determining unit is used for determining a judgment matrix corresponding to the plurality of indexes according to the plurality of indexes; and the fourth determining unit is used for determining each index to be used for calculating the weight value of the target wiring mode according to the judgment matrix.
In order to achieve the above object, according to another aspect of the present invention, a "computer-readable storage medium" or a "non-volatile storage medium" is provided, and includes a stored program, wherein when the program runs, a device in the "computer-readable storage medium" or the "non-volatile storage medium" is controlled to execute the above method for determining the evaluation index weight of the high voltage distribution network.
In order to achieve the above object, according to another aspect of the present invention, a processor for running a program is provided, wherein the program is run to execute the above method for determining the evaluation index weight of the high voltage distribution network.
The invention adopts the following steps: determining a target wiring mode; determining a plurality of indexes corresponding to the target wiring mode according to the target wiring mode, wherein the plurality of indexes are same-layer indexes; determining a judgment matrix corresponding to the multiple indexes according to the multiple indexes; according to the judgment matrix, the weight value of each index used for calculating the target wiring mode is determined, the technical problem that the wiring mode of the urban power distribution network in the related technology has no clear selection basis is solved, and the technical effect of improving the efficiency of selecting the wiring mode of the power distribution network is achieved.
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The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a flowchart of a method for determining evaluation index weights of a high voltage distribution network according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a high-voltage distribution network connection mode evaluation system provided by the present application;
FIG. 3 is a schematic diagram of a reciprocal scaling matrix according to an embodiment of the present application;
fig. 4 is a schematic diagram of a determination matrix provided in an embodiment of the present application; and
fig. 5 is a schematic diagram of an apparatus for determining evaluation index weight of a high voltage distribution network according to an embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions of the present invention better understood, 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 "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, 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.
According to the embodiment of the invention, a method for determining the evaluation index weight of a high-voltage distribution network is provided.
Fig. 1 is a flowchart of a method for determining evaluation index weights of a high voltage distribution network according to an embodiment of the present invention. As shown in fig. 1, the present invention comprises the steps of:
step S101, determining a target wiring mode;
step S102, determining a plurality of indexes corresponding to a target wiring mode according to the target wiring mode, wherein the plurality of indexes are same-layer indexes;
step S103, determining a judgment matrix corresponding to a plurality of indexes according to the plurality of indexes;
and step S104, determining each index for calculating the weight value of the target wiring mode according to the judgment matrix.
Above-mentioned, this scheme mainly embodies the guiding meaning to the construction of high voltage distribution network target wiring, has proposed 14 kinds of mode of connection, as follows:
1) radiation type wiring pattern: single radiation and double radiation;
2) chain connection mode: the power supply system comprises a single-side power supply single-loop chain, a double-side power supply single-loop chain, a single-side power supply incomplete double-loop chain, a double-side power supply incomplete double-loop chain and a double-side power supply complete double-loop chain;
3) t-type wiring mode: the power supply comprises a single-side power supply single T, a single-side power supply double T, a single-side power supply three T, a double-side power supply incomplete double T, a double-side power supply complete double T, a reverse U-T connection wire and a double-side power supply incomplete three T.
According to the guiding principle, a 110kV power grid transition or target wiring mode is 14 wiring modes, an in-station main wiring mode is also involved in the high-voltage distribution network wiring mode, and in order to simplify calculation, each wiring mode adopts a fixed main wiring mode which is mainly as follows:
1) radiation type wiring pattern: the high-voltage side of a main wiring in the station adopts a single bus section, and the low-voltage side adopts a single bus section;
2) chain connection mode: the high-voltage side of a main wiring in the station adopts a single bus section, and the low-voltage side adopts a single bus section;
3) t-type wiring mode: the high-voltage side of the main wiring in the station adopts a wiring of a line transformer bank, and the low-voltage side adopts a single bus section.
Specifically, an evaluation index system for evaluating the high-voltage network frame through an analytic hierarchy process comprises five primary indexes of power supply safety, power supply reliability, power supply economy, power supply quality and power grid adaptability. Meanwhile, each index comprises a plurality of quantitative subordinate indexes, wherein the subordinate indexes of power supply safety are 'N-1' checking, ice disaster resistance and power failure resistance, the subordinate indexes of power supply reliability are power supply reliability, the subordinate indexes corresponding to power supply economy are construction economy and operation economy, the subordinate indexes corresponding to power supply quality are voltage deviation, and the subordinate indexes corresponding to power grid adaptability are resource margin and power grid expansion margin respectively. The five primary indexes form a whole, so that the quality of a power grid planning scheme can be effectively evaluated, and the method can also be used for evaluating the power grid under the current situation.
The first-level indexes in the evaluation index system are the five first-level indexes, and the subordinate indexes corresponding to the first-level indexes are second-level indexes, wherein the first-level indexes are same-layer indexes, and the second-level indexes are same-layer indexes.
It should be noted that the object of this study is a typical wiring mode of the guiding rule, and each wiring mode is mainly evaluated, so that the power supply reliability and the power supply quality can meet the power supply requirement when the scheme is designed, and the power grid adaptability is also of little significance to the target grid structure, so that the present application only evaluates the power supply safety and the power supply economy, wherein, fig. 2 is a schematic diagram of a high-voltage distribution network wiring mode evaluation system provided by the present application, as shown in fig. 2, the primary indexes corresponding to the power supply safety and the power supply economy are respectively "N-1" check and ice disaster resistance and power failure resistance, economic constructability and economic operability, meanwhile, the secondary indexes corresponding to the "N-1" check are a main transformer "N-1" load loss rate and a line "N-1" load loss rate, and the secondary indexes corresponding to the constructive economy are a power supply capacity load matching degree and marginal electric quantity, and the second-level indexes corresponding to the operation economy are unit load operation cost and average line loss rate.
In the application, the weight value of each index used for calculating the target wiring mode is determined by determining the judgment matrix of the index on the same layer.
According to the method for determining the evaluation index weight of the high-voltage distribution network, provided by the embodiment of the invention, the target wiring mode is determined; determining a plurality of indexes corresponding to the target wiring mode according to the target wiring mode, wherein the plurality of indexes are same-layer indexes; determining a judgment matrix corresponding to the multiple indexes according to the multiple indexes; according to the judgment matrix, the weight value of each index used for calculating the target wiring mode is determined, the technical problem that the wiring mode of the urban power distribution network in the related technology has no clear selection basis is solved, and the technical effect of improving the efficiency of selecting the wiring mode of the power distribution network is achieved.
Optionally, after determining the multiple indexes corresponding to the target wiring mode according to the target wiring mode, and before determining the determination matrices corresponding to the multiple indexes according to the multiple indexes, the method includes: and comparing the indexes pairwise to obtain a reciprocal scale matrix, wherein the reciprocal scale matrix is used for expressing the size relation among the indexes.
Specifically, the index weight reflects the mutual importance relationship between indexes of the same layer, and is represented by a normalized vector. The weight size reflects the importance of the index relative to other indexes. If two indexes are involved in comparison, if the two indexes have equal importance, the weight of the two indexes can be represented by a vector {0.5,0.5 }; if the former is more important than the latter, the former weight value is larger than the latter, for example, as represented by the weight vector {0.6,0.4 }.
Further, according to the reciprocity scale theory, the indexes in the same layer are compared pairwise to obtain a quantitative judgment matrix, as shown in fig. 3, fig. 3 is a schematic diagram of a reciprocity scale matrix, and a magnitude relation of the measurement indexes can be obtained in the reciprocity scale matrix.
Optionally, pairwise comparing the multiple indexes to obtain a judgment matrix includes: acquiring a plurality of scale values corresponding to a plurality of indexes through a preset scale table; and combining a plurality of scale values into the reciprocal scale matrix to obtain a judgment matrix.
Specifically, assuming n indexes are involved in comparison in the reciprocal scale matrix, each index and other indexes are respectively compared in pairs for n-1 times, and the ith indexThe result of the comparison between the index and the jth index is recorded as aijAnd then the result of comparison with itself a is addediiAn n × n square matrix, called a decision matrix, may be formed.
In the formation of the above-mentioned decision matrix, a reciprocity scale theory may be used for quantization. For example, there are 3 indexes to be compared, namely index 1, index 2 and index 3. The expert considers the strength of the dominance of index 2 over index 1 as "much better". By consulting the scalar table, the language description of the expert can be quantized, and the result is 7; in contrast, the comparison result of index 1 with index 2 is the reciprocal 1/7 of 7, and the judgment matrix is formed by referring to the scale table and combining the scale table with the reciprocal scale matrix, and fig. 4 is a schematic diagram of the judgment matrix provided in the embodiment of the present application, as shown in fig. 4.
Optionally, before determining, according to the judgment matrix, that each index is used for calculating a weight value of the target wiring pattern, the method further includes: acquiring the order of a judgment matrix; calculating the maximum characteristic root of the judgment matrix; and calculating the consistency index of the judgment matrix according to the maximum characteristic root and the order of the judgment matrix.
Optionally, after calculating the consistency index of the judgment matrix according to the maximum feature root and the rank of the judgment matrix, the method includes: determining an average random consistency index of the judgment matrix according to the order of the judgment matrix; and calculating the random consistency index according to the consistency index and the average random consistency index.
Optionally, determining, according to the judgment matrix, a weight value of each index for calculating the target connection mode includes: judging whether the random consistency index of the judgment matrix meets the consistency requirement: if the random consistency index is smaller than the preset value, determining that the random consistency index meets the consistency requirement; and when the random consistency index of the judgment matrix meets the consistency requirement, determining the weight value of the judgment matrix.
In the matrix shown above, the diagonal element aiiThe result of comparison of the representative index i with itself is apparently "equivalent", i.e., aii1 is ═ 1; meanwhile, the symmetric elements about the diagonal are reciprocal to each other, and the reciprocity is satisfied, i.e. aji＝1/aij。
Further, a random consistency index (CR) is used to measure the consistency of the judgment matrix, specifically:
for the 1-9 scale reciprocity judgment matrix of nxn, the calculation method of CR is as follows:
1) calculating and judging the maximum characteristic root lambda of matrixmax；
2) According to the maximum characteristic root and the order number n of the judgment matrix, calculating a consistency index CI according to the following formula:
Figure BDA0002647399310000061
3) and according to the order number n of the matrix, finding the corresponding average random consistency index RI.
4) The random consistency index CR is calculated by the following formula:
CR＝CI/RI
CR＝CI/RI
in the above, after the random consistency index is obtained, it is determined whether CR is less than 0.1, and if CR is less than 0.1, the determination matrix is considered to meet the consistency requirement, where the 1 st and 2 nd order determination matrices have complete consistency, and the RI value is 0, and no calculation is required.
Further, when the consistency of the judgment matrix is verified to be qualified, the weight of the judgment matrix is solved; otherwise, part of elements of the judgment matrix need to be determined again, and the weight of the judgment matrix needs to be calculated again.
Optionally, each index of the high-voltage distribution network target grid evaluation index system is calculated according to the method, the calculation result of each index weight is shown in table 1 below, table 1 is a weight determination result of the high-voltage distribution network target grid evaluation index system, and the numerical value in parentheses is the weight value of the corresponding index.
Figure BDA0002647399310000071
Further, after determining the weights of the indexes of the different layers, the score of the target wiring pattern is determined by the scoring criterion.
By the method, the weight of the evaluation index of the high-voltage distribution network is determined, and the obtained score has a conclusion of guiding significance for planning the urban high-voltage distribution network.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.
The embodiment of the invention also provides a device for determining the evaluation index weight of the high-voltage distribution network, and it should be noted that the device for determining the evaluation index weight of the high-voltage distribution network provided by the embodiment of the invention can be used for executing the method for determining the evaluation index weight of the high-voltage distribution network provided by the embodiment of the invention. The following describes a device for determining the evaluation index weight of the high-voltage distribution network according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of an apparatus for determining evaluation index weight of a high voltage distribution network according to an embodiment of the present invention. As shown in fig. 5, the apparatus includes: a first determination unit 501 for determining a target wiring pattern; a second determining unit 502, configured to determine, according to the target wiring mode, a plurality of indexes corresponding to the target wiring mode, where the plurality of indexes are indexes of the same layer; a third determining unit 503, configured to determine, according to the multiple indexes, a determination matrix corresponding to the multiple indexes; a fourth determining unit 504, configured to determine, according to the determination matrix, each index for calculating a weight value of the target connection mode.
The device for determining the evaluation index weight of the high-voltage distribution network provided by the embodiment of the invention is used for determining a target wiring mode through a first determining unit 501; a second determining unit 502, configured to determine, according to the target wiring mode, a plurality of indexes corresponding to the target wiring mode, where the plurality of indexes are indexes of the same layer; a third determining unit 503, configured to determine, according to the multiple indexes, a determination matrix corresponding to the multiple indexes; the fourth determining unit 504 is configured to determine, according to the determination matrix, each index for calculating a weight value of the target connection mode, so that a technical problem that a connection mode of the urban distribution network in the related art has no clear selection basis is solved, and a technical effect of improving efficiency of selecting the connection mode of the distribution network is achieved.
Optionally, the apparatus comprises: the comparison unit is used for comparing the indexes pairwise to obtain a reciprocal scale matrix after determining the indexes corresponding to the target wiring mode according to the target wiring mode and before determining the judgment matrixes corresponding to the indexes according to the indexes, wherein the reciprocal scale matrix is used for representing the size relation among the indexes.
Optionally, the comparison unit comprises: the first acquisition module is used for acquiring a plurality of scale values corresponding to a plurality of indexes through a preset scale table; and the second acquisition module is used for combining the multiple scale values into the reciprocal scale matrix to obtain a judgment matrix.
Optionally, the apparatus further comprises: the first obtaining unit is used for obtaining the order of the judgment matrix before determining that each index is used for calculating the weight value of the target wiring mode according to the judgment matrix; the first calculation unit is used for calculating the maximum characteristic root of the judgment matrix; and the second calculating unit is used for calculating the consistency index of the judgment matrix according to the maximum characteristic root and the order of the judgment matrix.
Optionally, the apparatus comprises: the third calculating unit is used for determining the average random consistency index of the judgment matrix according to the order of the judgment matrix after the consistency index of the judgment matrix is calculated according to the maximum characteristic root and the order of the judgment matrix; and the fourth calculating unit is used for calculating the random consistency index according to the consistency index and the average random consistency index.
Optionally, the fourth determining unit 504 includes: the judging module is used for judging whether the random consistency index of the judgment matrix meets the consistency requirement: the first determining module is used for determining that the random consistency index meets the consistency requirement under the condition that the random consistency index is smaller than a preset value; and the second determining module is used for determining the weight value of the judgment matrix when the random consistency index of the judgment matrix meets the consistency requirement.
The device for determining the weight of the evaluation index of the high-voltage distribution network comprises a processor and a memory, wherein the first determination unit 501501 and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to be one or more than one, and the technical problem that the wiring mode of the urban distribution network in the related technology has no clear selection basis is solved by adjusting the kernel parameters.
The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.
An embodiment of the present invention provides a storage medium having a program stored thereon, which when executed by a processor implements a method of determining a weight of an evaluation index of a high voltage distribution network.
The embodiment of the invention provides a processor, which is used for running a program, wherein a method for determining the evaluation index weight of a high-voltage distribution network is executed during the running of the program.
The embodiment of the invention provides equipment, which comprises a processor, a memory and a program which is stored on the memory and can run on the processor, wherein the processor executes the program and realizes the following steps: determining a target wiring mode; determining a plurality of indexes corresponding to the target wiring mode according to the target wiring mode, wherein the plurality of indexes are same-layer indexes; determining a judgment matrix corresponding to the multiple indexes according to the multiple indexes; and determining each index for calculating the weight value of the target wiring mode according to the judgment matrix.
Optionally, after determining the multiple indexes corresponding to the target wiring mode according to the target wiring mode, and before determining the determination matrices corresponding to the multiple indexes according to the multiple indexes, the method includes: and comparing the indexes pairwise to obtain a reciprocal scale matrix, wherein the reciprocal scale matrix is used for expressing the size relation among the indexes.
Optionally, pairwise comparing the multiple indexes to obtain a judgment matrix includes: acquiring a plurality of scale values corresponding to a plurality of indexes through a preset scale table; and combining a plurality of scale values into the reciprocal scale matrix to obtain a judgment matrix.
Optionally, before determining, according to the judgment matrix, that each index is used for calculating a weight value of the target wiring pattern, the method further includes: acquiring the order of a judgment matrix; calculating the maximum characteristic root of the judgment matrix; and calculating the consistency index of the judgment matrix according to the maximum characteristic root and the order of the judgment matrix.
Optionally, after calculating the consistency index of the judgment matrix according to the maximum feature root and the rank of the judgment matrix, the method includes: determining an average random consistency index of the judgment matrix according to the order of the judgment matrix; and calculating the random consistency index according to the consistency index and the average random consistency index.
Optionally, determining, according to the judgment matrix, a weight value of each index for calculating the target connection mode includes: judging whether the random consistency index of the judgment matrix meets the consistency requirement: if the random consistency index is smaller than the preset value, determining that the random consistency index meets the consistency requirement; and when the random consistency index of the judgment matrix meets the consistency requirement, determining the weight value of the judgment matrix. The device herein may be a server, a PC, a PAD, a mobile phone, etc.
The invention also provides a computer program product adapted to perform a program for initializing the following method steps when executed on a data processing device: determining a target wiring mode; determining a plurality of indexes corresponding to the target wiring mode according to the target wiring mode, wherein the plurality of indexes are same-layer indexes; determining a judgment matrix corresponding to the multiple indexes according to the multiple indexes; and determining each index for calculating the weight value of the target wiring mode according to the judgment matrix.
Optionally, after determining the multiple indexes corresponding to the target wiring mode according to the target wiring mode, and before determining the determination matrices corresponding to the multiple indexes according to the multiple indexes, the method includes: and comparing the indexes pairwise to obtain a reciprocal scale matrix, wherein the reciprocal scale matrix is used for expressing the size relation among the indexes.
Optionally, pairwise comparing the multiple indexes to obtain a judgment matrix includes: acquiring a plurality of scale values corresponding to a plurality of indexes through a preset scale table; and combining a plurality of scale values into the reciprocal scale matrix to obtain a judgment matrix.
Optionally, before determining, according to the judgment matrix, that each index is used for calculating a weight value of the target wiring pattern, the method further includes: acquiring the order of a judgment matrix; calculating the maximum characteristic root of the judgment matrix; and calculating the consistency index of the judgment matrix according to the maximum characteristic root and the order of the judgment matrix.
Optionally, after calculating the consistency index of the judgment matrix according to the maximum feature root and the rank of the judgment matrix, the method includes: determining an average random consistency index of the judgment matrix according to the order of the judgment matrix; and calculating the random consistency index according to the consistency index and the average random consistency index.
Optionally, determining, according to the judgment matrix, a weight value of each index for calculating the target connection mode includes: judging whether the random consistency index of the judgment matrix meets the consistency requirement: if the random consistency index is smaller than the preset value, determining that the random consistency index meets the consistency requirement; and when the random consistency index of the judgment matrix meets the consistency requirement, determining the weight value of the judgment matrix.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The above are merely examples of the present invention, and are not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. A method for determining evaluation index weight of a high-voltage distribution network is characterized by comprising the following steps:
determining a target wiring mode;
determining a plurality of indexes corresponding to the target wiring mode according to the target wiring mode, wherein the plurality of indexes are same-layer indexes;
determining a judgment matrix corresponding to the indexes according to the indexes;
and determining each index to be used for calculating the weight value of the target wiring mode according to the judgment matrix.
2. The method according to claim 1, wherein after determining a plurality of indexes corresponding to the target wiring pattern according to the target wiring pattern, before determining a judgment matrix corresponding to the plurality of indexes according to the plurality of indexes, the method comprises:
and comparing the indexes pairwise to obtain a reciprocal scale matrix, wherein the reciprocal scale matrix is used for expressing the size relationship among the indexes.
3. The method of claim 2, wherein comparing the plurality of indicators pairwise to obtain a decision matrix comprises:
acquiring a plurality of scale values corresponding to a plurality of indexes through a preset scale table;
and combining a plurality of scale values into the reciprocal scale matrix to obtain the judgment matrix.
4. The method of claim 3, wherein before determining the weight value for each of the indicators to calculate the target wiring pattern according to the decision matrix, the method further comprises:
acquiring the order of the judgment matrix;
calculating the maximum characteristic root of the judgment matrix;
and calculating the consistency index of the judgment matrix according to the maximum characteristic root and the order of the judgment matrix.
5. The method according to claim 4, wherein after calculating the consistency index of the decision matrix from the maximum feature root and the order of the decision matrix, the method comprises:
determining an average random consistency index of the judgment matrix according to the order of the judgment matrix;
and calculating the random consistency index according to the consistency index and the average random consistency index.
6. The method of claim 5, wherein determining, according to the decision matrix, the weight value of each of the indicators for calculating the target wiring pattern comprises:
judging whether the random consistency index of the judgment matrix meets the consistency requirement:
if the random consistency index is smaller than a preset value, determining that the random consistency index meets the consistency requirement;
determining the weight value of the decision matrix when the random consistency indicator of the decision matrix meets the consistency requirement.
7. A device for determining the weight of an evaluation index of a high-voltage distribution network is characterized by comprising the following steps:
a first determination unit for determining a target wiring pattern;
the second determining unit is used for determining a plurality of indexes corresponding to the target wiring mode according to the target wiring mode, wherein the plurality of indexes are same-layer indexes;
the third determining unit is used for determining a judgment matrix corresponding to a plurality of indexes according to the plurality of indexes;
and the fourth determining unit is used for determining each index to be used for calculating the weight value of the target wiring mode according to the judgment matrix.
8. The apparatus of claim 7, wherein the apparatus comprises: and the comparison unit is used for comparing the indexes pairwise to obtain a reciprocal scale matrix after determining the indexes corresponding to the target wiring mode according to the target wiring mode and before determining the judgment matrixes corresponding to the indexes according to the indexes, wherein the reciprocal scale matrix is used for representing the size relationship among the indexes.
9. A "computer-readable storage medium" or "non-volatile storage medium", wherein the "computer-readable storage medium" or "non-volatile storage medium" includes a stored program, and when the program runs, the apparatus in which the "computer-readable storage medium" or "non-volatile storage medium" is controlled to execute the method for determining the evaluation index weight of the high voltage distribution network according to any one of claims 1 to 6.
10. A processor, characterized in that the processor is configured to run a program, wherein the program is configured to perform a method for determining evaluation index weights for a high voltage distribution network according to any one of claims 1 to 6 when running.
CN202010858732.XA 2020-08-24 2020-08-24 Method and device for determining evaluation index weight of high-voltage distribution network Pending CN111985822A (en)

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