Power transmission and transformation project design scheme optimization method and system considering regional ecological characteristics

Abstract

The invention discloses a power transmission and transformation project design scheme optimization method and system considering regional ecological characteristics. The method comprises the following steps: determining the boundary and ecological current situation of a power transmission and transformation project project region; the ecological environment influence, the natural environment influence and the social influence are considered respectively, a multi-stage index system is constructed, and qualitative indexes in the multi-stage index system are quantified; respectively determining the subjective weight and objective weight of each index, and determining the combined weight of each index according to the game theory; and calculating a comprehensive score of each power transmission and transformation project design scheme according to each index value and the comprehensive weight thereof, and determining an optimal power transmission and transformation project design scheme based on the comprehensive scores. According to the method, the influences of the ecological environment, the natural environment, the social environment and the like are comprehensively considered, different weights are given to indexes with different influence degrees, various power transmission and transformation project design schemes can be optimized, and the problem that optimal selection is difficult to achieve when the power transmission and transformation project design schemes are selected is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of power transmission and transformation engineering design scheme optimization, and in particular to a method and system for optimizing power transmission and transformation engineering design schemes taking into account regional ecological characteristics. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] In recent years, climate change and the development and utilization of human activities have posed a huge threat to ecosystem services, thus leading to many ecological problems, among which ecological fragility is particularly prominent. At the same time, climate change and economic development have further increased people's demand for electricity. In order to meet the needs of the rapid development of power load, the construction scale of power transmission and transformation projects as a basic industry has continued to increase. Compared with other construction projects, power transmission and transformation projects have the characteristics of long transmission distances and the combination of engineering points and lines, so power transmission and transformation projects often cannot avoid crossing important and fragile ecological sensitive areas. During the construction of power transmission and transformation projects, the destruction of original vegetation, construction waste and domestic waste caused by excavation, felling of trees and construction of roads will have different degrees of impact on the ecological environment.

[0004] It is very important to achieve coordination between power grid construction and the environment, which requires comprehensive consideration of factors such as geographical environment, ecological conditions and biological resources during power transmission and conversion. Due to differences in focus and regional characteristics in different ecological regions, many ecological protection plans for power transmission and transformation projects are suitable in this area, but not necessarily in other areas. Therefore, it is particularly important to optimize the design plan for power transmission and transformation projects based on regional ecological characteristics.

[0005] Existing technology often determines the design plan of the power transmission and transformation project based on the experience of designers after on-site investigation; however, this method often makes it difficult to conduct a comprehensive and comprehensive investigation of the ecological environment, natural environment and social environment of the construction area, resulting in an incomplete ecological protection plan for the power transmission and transformation project, which may cause greater damage to the local ecological environment.

[0006] Although the existing technology also discloses constructing an evaluation system by selecting indicators to evaluate different ecological protection plans, the selection of indicators is also somewhat one-sided and does not comprehensively consider the comprehensive impact of the ecological environment, natural environment, and social environment, resulting in inaccurate evaluation results. Summary of the invention

[0007] In order to solve the above problems, the present invention proposes a method and system for optimizing power transmission and transformation engineering design schemes taking into account regional ecological characteristics, comprehensively considering the influence of the ecological environment, natural environment and social environment, and assigning different weights to indicators with different degrees of influence. It can optimize various power transmission and transformation engineering design schemes and solve the problem that it is difficult to achieve the optimal choice when selecting power transmission and transformation engineering design schemes.

[0008] In some embodiments, the following technical solutions are adopted:

[0009] A method for optimizing a power transmission and transformation engineering design scheme taking into account regional ecological characteristics comprises:

[0010] Determine the boundaries and ecological status of the power transmission and transformation project area;

[0011] Consider ecological environmental impact, natural environmental impact and social impact respectively, build a multi-level indicator system, and quantify the qualitative indicators in the multi-level indicator system;

[0012] Determine the subjective weight and objective weight of each indicator separately, and determine the combined weight of each indicator based on game theory;

[0013] According to the values ​​of each indicator and its comprehensive weight, the comprehensive score of each power transmission and transformation engineering design scheme is calculated, and the best power transmission and transformation engineering design scheme is determined based on the comprehensive score.

[0014] As a further solution, the boundaries of the power transmission and transformation project area are determined as follows:

[0015] Obtain preliminary boundary information of the power transmission and transformation area through satellite remote sensing images, and use GIS software to calibrate the boundary lines of satellite remote sensing images of the power transmission and transformation project area;

[0016] Import the calibrated satellite remote sensing images into AutoCAD software, extract boundary points, draw the power transmission and transformation project area drawings, measure the actual boundaries of the power transmission and transformation project area, and form accurate power transmission and transformation project area boundary coordinates on the area drawings.

[0017] As a further solution, the qualitative indicators in the multi-level indicator system are quantified, specifically:

[0018] Obtain expert evaluations of qualitative indicators, convert the quantitative terms of the expert evaluations into Pythagorean fuzzy numbers; and determine the scores of qualitative indicators based on the Pythagorean fuzzy numbers.

[0019] As a further solution, the subjective weights of each indicator are determined as follows:

[0020] Combined with expert opinions, determine the importance of different indicators at each level, and construct the average judgment matrix at each level;

[0021] Calculate the consistency index of the average judgment matrix to determine whether the consistency test passes;

[0022] If the consistency test is passed, the eigenvector corresponding to the maximum eigenvalue of the average judgment matrix of each level is the weight of the indicator at that level; the weight of the last level indicator is the product of the weight of the indicator corresponding to the previous level.

[0023] As a further solution, determine the objective weight of each indicator, specifically:

[0024] Assume that there are m power transmission and transformation project design schemes and n evaluation indicators, forming an original evaluation matrix with m rows and n columns:

[0025] The original evaluation matrix X is standardized to obtain the standardized matrix X′;

[0026] Use standard deviation S j It represents the comparison strength of the jth indicator, and uses the correlation coefficient to calculate the conflict of the jth indicator;

[0027] The information content of the j-th indicator is calculated based on the contrast intensity and conflict, and the objective weight of the j-th indicator is determined based on the ratio of the information content of the j-th indicator to the sum of the information content of all indicators.

[0028] As a further solution, the combined weights of each indicator are determined according to game theory, specifically:

[0029] Constructing comprehensive weight vector Among them, β 1 and β 2 are the weight coefficients of subjective weight and objective weight respectively, ω 1b and ω 2b They are subjective weight and objective weight respectively;

[0030] According to the idea of ​​game theory, a countermeasure model is constructed to minimize the deviation between the comprehensive weight vector and the subjective weight vector and the objective weight vector.

[0031] Solve the game model to get the weight coefficient β 1 and β 2 , and the weight coefficient β 1 and β 2 Normalize them respectively, and calculate the comprehensive weight vector ω based on the normalized weight coefficient b .

[0032] As a further solution, the comprehensive score of each power transmission and transformation project design scheme is calculated based on the index values ​​and their comprehensive weights, specifically:

[0033]

[0034] Among them, w k 、a k Respectively represent the comprehensive weight and index value of the kth index, w j 、a j They represent the comprehensive weight and index value of the jth index respectively; n is the total number of indicators; k=1,2…,n, j=1,2…,n, k≠j, s=t=1.

[0035] In some embodiments, the following technical solutions are adopted:

[0036] A system for optimizing design schemes for power transmission and transformation projects taking into account regional ecological characteristics, comprising:

[0037] Data acquisition module, used to determine the boundaries and ecological status of the power transmission and transformation project area;

[0038] The indicator system construction module is used to consider the ecological environmental impact, natural environmental impact and social impact respectively, construct a multi-level indicator system, and quantify the qualitative indicators in the multi-level indicator system;

[0039] The weight calculation module is used to determine the subjective weight and objective weight of each indicator respectively, and determine the combined weight of each indicator according to game theory;

[0040] The scheme optimization module is used to calculate the comprehensive score of each power transmission and transformation engineering design scheme according to the value of each indicator and its comprehensive weight, and determine the best power transmission and transformation engineering design scheme based on the comprehensive score.

[0041] In some embodiments, the following technical solutions are adopted:

[0042] A terminal device includes a processor and a memory, wherein the processor is used to implement instructions; the memory is used to store multiple instructions, and the instructions are suitable for being loaded by the processor and executing the above-mentioned method for optimizing the design scheme of power transmission and transformation engineering considering regional ecological characteristics.

[0043] In some embodiments, the following technical solutions are adopted:

[0044] A computer-readable storage medium stores a plurality of instructions, wherein the instructions are suitable for being loaded by a processor of a terminal device and executing the above-mentioned method for optimizing a design scheme for a power transmission and transformation project taking into account regional ecological characteristics.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] (1) The present invention comprehensively considers the impact of the ecological environment, natural environment and social environment, constructs a comprehensive indicator system, comprehensively considers the ecological protection influencing factors of the power transmission and transformation project area, and assigns different weights to indicators with different degrees of influence. It can more objectively realize the comprehensive evaluation of different power transmission and transformation project design schemes, making the optimization of power transmission and transformation project design schemes more accurate, thereby better reducing the impact on the local ecological environment.

[0047] (2) The present invention calculates the subjective weight and objective weight of each indicator respectively, and then determines the combined weight of each indicator according to game theory; the subjective weight can determine the priority of different ecological protection goals, accurately reflecting the influence of different indicators on the optimization of power transmission and transformation project design schemes; the objective weight can effectively retain the indicator's own information, avoid the extreme indicator weight, and make the weight distribution more reliable; the subjective weight and the objective weight are combined through game theory, and the subjective and objective weights are used as the two sides of the game, so that the final weight and the deviation from the subjective and objective weights are minimized, thereby forming a comprehensive weight that complements the subjective and objective advantages.

[0048] (3) The present invention fully considers the importance of each indicator and the mutual influence between each indicator factor, and calculates the comprehensive score of the power transmission and transformation project design scheme based on the comprehensive weight and indicator value of each indicator, so that the evaluation of the scheme is more comprehensive and accurate.

[0049] Other features and additional advantages of the present invention will be given in part in the following description, and in part will become obvious from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is a flow chart of a method for optimizing a power transmission and transformation engineering design scheme taking into account regional ecological characteristics in an embodiment of the present invention. DETAILED DESCRIPTION

[0051] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0052] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0053] Embodiment 1

[0054] In one or more embodiments, a method for optimizing a power transmission and transformation engineering design scheme taking into account regional ecological characteristics is disclosed, combined with Figure 1 , specifically including the following process:

[0055] S101: Determine the boundaries and ecological status of the power transmission and transformation project area.

[0056] In this embodiment, the process of determining the boundary of the power transmission and transformation project area is as follows:

[0057] Through satellite remote sensing technology, satellite remote sensing images of the power transmission and transformation project area are obtained, the contrast of the acquired remote sensing images is adjusted, the boundaries of areas with different contrasts are extracted, and preliminary information on the boundaries of the project area is obtained.

[0058] Among them, contrast adjustment can be achieved by using existing image processing. There are also many methods for boundary extraction, and the commonly used ones are Sobel operator (detecting image boundaries by calculating the gradient of pixel points in the image) and Canny edge detection (a multi-level edge detection algorithm). The boundary extraction method can be used to extract boundaries of different contrasts. Elements such as mountains, plains, rivers, vegetation types and densities, water bodies and wetlands will show different contrasts in remote sensing images, and the contrast boundary can indicate the geological boundary.

[0059] In this embodiment, the satellite remote sensing image is imported into the GIS software, and the GIS software calibrates the boundary line of the power transmission and transformation project area through operations such as digitizing the boundary line, moving, rotating, and scaling.

[0060] Import the processed image in GIS software into AutoCAD software, perform coordinate system conversion, establish the world coordinate system, extract boundary points on the boundary line, mark the coordinates of each boundary point according to the world coordinate system, and draw and export the project area drawings. Among them, boundary points represent some corner points (turning points or corner points of the boundary line), endpoints (starting and ending points of the boundary line), and feature points (points with special significance in actual geography or design, such as obvious terrain change points, important landmark locations, etc.). In AutoCAD software, commands such as PEDIT, LIST, and POINT can be used to extract boundary points.

[0061] Based on the project area drawings, GPS positioning equipment is used to conduct field measurements and calculations on the boundary points to determine the exact coordinates and area of ​​the project area.

[0062] The process of determining the ecological status of the transmission and transformation project area is as follows:

[0063] Data collection methods are used to collect data on the ecological status of the project area, such as regional ecological functional zoning, soil types, vegetation types, land use types, sensitive area functional zoning, and distribution of animal and plant resources; among them, ecologically sensitive areas refer to those areas that are particularly sensitive to environmental changes and easily affected by natural or human activities.

[0064] This embodiment uses satellite remote sensing technology to obtain regional images, and uses high-resolution satellite remote sensing data to extract vegetation index, land cover type, vegetation growth status and other information; ARCGIS software is used to perform set correction and image interpretation on regional images to generate preliminary ecological background data;

[0065] The data is then corrected through on-site investigations. For example, problems encountered during interpretation and information extraction are verified on-site, and the interpreted data are corrected based on the verification results. The ecological status of the evaluation area is intuitively understood, and based on the interpretation of remote sensing images, typical sample plots are selected to conduct sample surveys and measure biomass. On-site investigations are conducted on important species such as protected rare and endangered species, indigenous species, endemic species, and community-forming species to clarify their distribution, growth, and living conditions.

[0066] S102: Consider the ecological and environmental impacts, natural environmental impacts and social impacts respectively, construct a multi-level indicator system, and quantify the qualitative indicators in the multi-level indicator system.

[0067] This embodiment constructs a multi-level and multi-dimensional optimization evaluation index system for ecological protection design schemes for power transmission and transformation projects from three dimensions: ecological environmental impact, natural environmental impact, and social impact, as shown in Table 1. Considering that the indicators available for different power transmission and transformation projects are different, the indicators can be further selected in combination with the actual situation during optimization.

[0068] Table 1 Evaluation index system for selecting ecological protection design schemes for power transmission and transformation projects

[0069]

[0070]

[0071] The power transmission and transformation project can obtain the actual situation of the indicators, select the indicators suitable for the current power transmission and transformation project from the above indicator system, and form a preferred indicator system; based on the boundary and ecological status data of the power transmission and transformation project area determined in S101, assign values ​​to each indicator in the preferred indicator system.

[0072] There are multiple qualitative indicators in the above indicator system, such as the degree of interference of the D5 project on natural landscapes and scenic spots. This embodiment quantifies these qualitative indicators; the specific process is as follows:

[0073] First, experts evaluate the quality of the project with reference to the actual situation; according to Table 2, the quantitative terms of the qualitatively selected evaluation indicators are used to convert the expert evaluation into Pythagorean fuzzy numbers.

[0074] Table 2 Quantitative terms for qualitative optimization evaluation indicators

[0075]

[0076] Convert the Pythagorean fuzzy number to a specific score, such as assuming f i =(α i ,β i ) is a Pythagorean fuzzy number, f i The score function is defined as Therefore, the Pythagorean fuzzy number of each qualitative evaluation index is obtained through Table 2, and then the qualitative index is calculated based on the score function as its quantitative value.

[0077] S103: Determine the subjective weight and objective weight of each indicator respectively, and determine the combined weight of each indicator according to game theory.

[0078] In this embodiment, based on the ecological environment status of the project area, the priorities of different ecological protection goals are determined by assigning weights to the goals in view of the ecological environment, natural conditions and social environment problems in different project areas.

[0079] Specifically, the subjective weight is first determined, and the specific process is as follows:

[0080] (1) Provide experts with the acquired data on the ecological status of the project area so that they can fully understand the regional ecological characteristics. Then, through the pairwise comparison method and according to the “1-9” scaling method in Table 3, construct a judgment matrix from top to bottom and calculate the average judgment matrix at each level.

[0081] Table 3 "1-9" scale method

[0082]

[0083]

[0084] Taking the first-level indicators as an example, the construction process of the judgment matrix is ​​as follows:

[0085] Based on Table 3, the scale values ​​of the comparisons of the two factors in Table 4 are determined; the scale values ​​of an expert are determined as follows:

[0086] Table 4 Scale values ​​determined by an expert

[0087] Ecological and environmental impact Natural environmental impact Social Impact Ecological and environmental impact 1 3 5 Natural environmental impact 3 1 5 Social Impact 5 5 1

[0088] Thus, the judgment matrix corresponding to the expert is obtained as The judgment matrices corresponding to different experts are averaged to obtain the average judgment matrix of the first-level indicators.

[0089] (2) Calculate the consistency index CR of the average judgment matrix as follows:

[0090]

[0091] in, λ max represents the maximum eigenvalue of the average judgment matrix, n is the number of indicators; the value of RI refers to Table 5.

[0092] Table 5 Random consistency evaluation value table

[0093]

[0094] If the calculated consistency index CR value is greater than 0.1, it means that the consistency test has not been passed and the judgment matrix needs to be re-determined. If the calculated consistency index CR value is less than 0.1, it has passed the consistency test and the following calculation process continues.

[0095] (3) The eigenvector corresponding to the maximum eigenvalue of the average judgment matrix of each level is the weight of the indicator at that level. Assume that the eigenvector of the judgment matrix of the first level is where b 1 , b 2 , b 3 They represent the weights of ecological environmental impact, natural environmental impact, and social impact respectively. The eigenvector of the judgment matrix of the secondary indicators under the ecological environment is The eigenvector of the judgment matrix of the three-level index under the vegetation index is The final subjective weight of the third-level indicator D1 is expressed as ω 1 =b 1 ·c 1 ·d 1 .

[0096] The subjective weights of other indicators are obtained using the same process.

[0097] This embodiment effectively combines expert opinions and objective judgment results, quantitatively describes the importance of pairwise comparisons of indicators at the same level, and then calculates subjective weights that can reflect the importance of indicators at each level. The priority of different ecological protection goals can be determined through subjective weights, and the influence of different indicators on the optimization of power transmission and transformation project design schemes can be accurately reflected.

[0098] In this embodiment, the calculation process of the objective weight is as follows:

[0099] (1) Assume that there are currently m power transmission and transformation ecological protection design schemes and n optimal evaluation indicators, forming an original evaluation matrix with m rows and n columns:

[0100] Among them, x ij represents the value of the jth indicator of the ith solution, where i∈m,j∈n.

[0101] (2) The original evaluation matrix X is standardized to obtain the standardized matrix X′.

[0102] For benefit-based indicators, the standardization method is:

[0103]

[0104] For cost-based indicators, the standardization method is:

[0105]

[0106] (3) Using standard deviation S j It represents the comparison strength of the jth indicator. The larger the standard deviation, the greater the numerical difference of the indicator.

[0107]

[0108] in, Represents the average value of the j-th indicator.

[0109] (4) The correlation coefficient is used to represent the correlation between indicators. The larger the correlation coefficient, the stronger the correlation between the indicator and other indicators, and the more important information the indicator reflects. The conflict of indicators is calculated based on the correlation coefficient of the indicators.

[0110]

[0111] Among them, ξ jk represents the correlation coefficient between the jth indicator and the kth indicator, A j Indicates the conflict of the jth indicator.

[0112] (5) The information content of the jth indicator is calculated based on the contrast intensity and conflict, and the objective weight of the jth indicator is determined based on the ratio of the information content of the jth indicator to the sum of the information content of all indicators.

[0113] Information quantity Q j From the comparison strength and conflict of indicators, we can get: Q j =S j ·A j ;Q j The larger it is, the greater the role of the jth indicator in the entire evaluation index system.

[0114] Determine the objective weight of the indicator W j :

[0115]

[0116] In this embodiment, the results fluctuate greatly when using different single weighting methods, and are easily affected by discrete extreme values ​​or subjective bias. Using the idea of ​​game theory, the subjective and objective weights are used as the two sides of the game, so that the final weight and the deviation of the subjective and objective weights are minimized, and the combination coefficient is determined to form a comprehensive weight that complements the subjective and objective advantages. The specific implementation steps are as follows:

[0117] (1) First, construct the comprehensive weight vector ω b , the formula is as follows:

[0118]

[0119] In the formula, β 1 , β 2 is the weight coefficient, β 1 +β 2 =1. are the transposed matrices of subjective weight and objective weight respectively.

[0120] (2) According to the game theory, a countermeasure model is constructed so that ω b and ω 1b ,ω 2b The deviation is minimized; the countermeasure model is as follows:

[0121]

[0122] (3) The above equation is differentiated to obtain the optimal first-order derivative, and its linear equation system is shown in the following formula:

[0123]

[0124] (4) According to the above formula, the corresponding β 1 , β 2 , normalize the weight coefficients:

[0125]

[0126] According to the above formula, the normalized weight coefficient is calculated. The comprehensive weights of the optimization evaluation indicators for the ecological protection design scheme of power transmission and transformation projects are obtained by calculation:

[0127]

[0128] In the formula, is the obtained comprehensive weight vector.

[0129] S104: Calculate the comprehensive score of each power transmission and transformation engineering design scheme according to the index values ​​and their comprehensive weights, and determine the best power transmission and transformation engineering design scheme based on the comprehensive score.

[0130] Specifically, assuming is the comprehensive weight vector of the optimal evaluation index, where w j represents the comprehensive weight of the jth indicator. Then the comprehensive score of each power transmission and transformation engineering design scheme is calculated as follows:

[0131]

[0132] Among them, w k 、a k Respectively represent the comprehensive weight and index value of the kth index, w j 、a j They represent the comprehensive weight and index value of the jth index respectively; n is the total number of preferred indicators; k=1,2…,n, j=1,2…,n, k≠j, s=t=1.

[0133] According to the comprehensive score of the scheme i , and select the plan with the highest score as the best ecological protection design plan for power transmission and transformation projects.

[0134] This embodiment fully considers the importance of each indicator and the mutual influence between each indicator factor, and calculates the comprehensive score of the power transmission and transformation project design scheme based on the comprehensive weight and indicator value of each indicator, so that the evaluation of the scheme is more comprehensive and accurate.

[0135] Embodiment 2

[0136] In one or more embodiments, a system for optimizing a power transmission and transformation engineering design scheme taking into account regional ecological characteristics is disclosed, including:

[0137] Data acquisition module, used to determine the boundaries and ecological status of the power transmission and transformation project area;

[0138] The indicator system construction module is used to consider the ecological environmental impact, natural environmental impact and social impact respectively, construct a multi-level indicator system, and quantify the qualitative indicators in the multi-level indicator system;

[0139] The weight calculation module is used to determine the subjective weight and objective weight of each indicator respectively, and determine the combined weight of each indicator according to game theory;

[0140] The scheme optimization module is used to calculate the comprehensive score of each power transmission and transformation engineering design scheme according to the value of each indicator and its comprehensive weight, and determine the best power transmission and transformation engineering design scheme based on the comprehensive score.

[0141] The specific implementation of the above modules is the same as that of the first embodiment and will not be described in detail.

[0142] Embodiment 3

[0143] In one or more embodiments, a terminal device is disclosed, which includes a processor and a memory, the processor being used to implement instructions; the memory being used to store multiple instructions, the instructions being suitable for being loaded by the processor and executing the method for optimizing the design scheme of a power transmission and transformation project that considers regional ecological characteristics as described in Example 1.

[0144] It should be understood that in this embodiment, the processor may be a central processing unit CPU, and the processor may also be other general-purpose processors, digital signal processors DSP, application-specific integrated circuits ASIC, off-the-shelf programmable gate arrays FPGA or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0145] The memory may include a read-only memory and a random access memory, and provide instructions and data to the processor. A portion of the memory may also include a non-volatile random access memory. For example, the memory may also store information about the device type.

[0146] In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software.

[0147] Embodiment 4

[0148] In one or more embodiments, a computer-readable storage medium is disclosed, in which a plurality of instructions are stored, wherein the instructions are suitable for being loaded by a processor of a terminal device and executing the method for optimizing the design scheme of a power transmission and transformation project considering regional ecological characteristics as described in Example 1.

[0149] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A method for optimizing the design scheme of power transmission and transformation projects taking into account regional ecological characteristics, characterized in that: include: Determine the boundaries and ecological status of the power transmission and transformation project area; Consider ecological environmental impact, natural environmental impact and social impact respectively, build a multi-level indicator system, and quantify the qualitative indicators in the multi-level indicator system; Determine the subjective weight and objective weight of each indicator separately, and determine the combined weight of each indicator based on game theory; According to the values ​​of each indicator and its comprehensive weight, the comprehensive score of each power transmission and transformation engineering design scheme is calculated, and the best power transmission and transformation engineering design scheme is determined based on the comprehensive score.

2. A method for optimizing a power transmission and transformation engineering design scheme taking into account regional ecological characteristics as claimed in claim 1, characterized in that: Determine the boundaries of the power transmission and transformation project area, specifically: Obtain preliminary boundary information of the power transmission and transformation area through satellite remote sensing images, and use GIS software to calibrate the boundary lines of satellite remote sensing images of the power transmission and transformation project area; Import the calibrated satellite remote sensing images into AutoCAD software, extract boundary points, draw the power transmission and transformation project area drawings, measure the actual boundaries of the power transmission and transformation project area, and form accurate power transmission and transformation project area boundary coordinates on the area drawings.

3. A method for optimizing a power transmission and transformation engineering design scheme taking into account regional ecological characteristics as claimed in claim 1, characterized in that: The qualitative indicators in the multi-level indicator system are quantified, specifically: Obtain expert evaluations of qualitative indicators, convert the quantitative terms of the expert evaluations into Pythagorean fuzzy numbers; and determine the scores of qualitative indicators based on the Pythagorean fuzzy numbers.

4. A method for optimizing a power transmission and transformation engineering design scheme taking into account regional ecological characteristics as claimed in claim 1, characterized in that: Determine the subjective weight of each indicator, specifically: Combined with expert opinions, determine the importance of different indicators at each level, and construct the average judgment matrix at each level; Calculate the consistency index of the average judgment matrix to determine whether the consistency test passes; If the consistency test is passed, the eigenvector corresponding to the maximum eigenvalue of the average judgment matrix of each level is the weight of the indicator at that level; the weight of the last level indicator is the product of the weight of the indicator corresponding to the previous level.

5. A method for optimizing a power transmission and transformation engineering design scheme taking into account regional ecological characteristics as claimed in claim 1, characterized in that: Determine the objective weight of each indicator, specifically: Assume that there are m power transmission and transformation project design schemes and n evaluation indicators, forming an original evaluation matrix with m rows and n columns: The original evaluation matrix X is standardized to obtain the standardized matrix X′; Use standard deviation S j It represents the comparison strength of the jth indicator, and uses the correlation coefficient to calculate the conflict of the jth indicator; The information content of the j-th indicator is calculated based on the contrast intensity and conflict, and the objective weight of the j-th indicator is determined based on the ratio of the information content of the j-th indicator to the sum of the information content of all indicators.

6. A method for optimizing a power transmission and transformation engineering design scheme taking into account regional ecological characteristics as claimed in claim 1, characterized in that: The combined weights of each indicator are determined according to game theory, specifically: Constructing comprehensive weight vector Among them, β1 and β2 are the weight coefficients of subjective weight and objective weight respectively, ω 1b and ω 2b They are subjective weight and objective weight respectively; According to the idea of ​​game theory, a countermeasure model is constructed to minimize the deviation between the comprehensive weight vector and the subjective weight vector and the objective weight vector. Solve the countermeasure model to obtain the weight coefficients β1 and β2, and normalize the weight coefficients β1 and β2 respectively. Based on the normalized weight coefficients, calculate the comprehensive weight vector ω b .

7. A method for optimizing a power transmission and transformation engineering design scheme taking into account regional ecological characteristics as claimed in claim 1, characterized in that: According to the index values ​​and their comprehensive weights, the comprehensive score of each power transmission and transformation project design scheme is calculated, specifically: Among them, w k 、a k Respectively represent the comprehensive weight and index value of the kth index, w j 、a j They represent the comprehensive weight and index value of the jth index respectively; n is the total number of indicators; k=1,2…,n, j=1,2…,n, k≠j, s=t=1.

8. A system for optimizing power transmission and transformation engineering design schemes taking into account regional ecological characteristics, characterized in that: include: Data acquisition module, used to determine the boundaries and ecological status of the power transmission and transformation project area; The indicator system construction module is used to consider the ecological environmental impact, natural environmental impact and social impact respectively, construct a multi-level indicator system, and quantify the qualitative indicators in the multi-level indicator system; The weight calculation module is used to determine the subjective weight and objective weight of each indicator respectively, and determine the combined weight of each indicator according to game theory; The scheme optimization module is used to calculate the comprehensive score of each power transmission and transformation engineering design scheme according to the value of each indicator and its comprehensive weight, and determine the best power transmission and transformation engineering design scheme based on the comprehensive score.

9. A terminal device, comprising a processor and a memory, wherein the processor is used to implement instructions; and the memory is used to store multiple instructions, characterized in that: The instructions are suitable for being loaded by a processor and executing the method for optimizing the design scheme of a power transmission and transformation project taking into account regional ecological characteristics as described in any one of claims 1-7.

10. A computer-readable storage medium storing a plurality of instructions, characterized in that: The instructions are suitable for being loaded by a processor of a terminal device and executing the method for optimizing a design scheme for a power transmission and transformation project taking into account regional ecological characteristics as described in any one of claims 1-7.

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