Design-side response-based power transmission and transformation project feasibility index evaluation method and system

Abstract

The application provides a power transmission and transformation project feasibility index evaluation method and system based on design side response, and relates to the technical field of power transmission and transformation project feasibility indexes. The method comprises the following steps: analyzing the influence factors of the power transmission and transformation project feasibility, and constructing a power transmission and transformation project feasibility index system based on design side response; based on the constructed power transmission and transformation project feasibility index system based on design side response, the index weight value is solved by combining the analytic hierarchy process, and a comprehensive evaluation model comprising the analytic hierarchy process and the power transmission and transformation project feasibility index system based on design side response is formed; based on the comprehensive evaluation model, the power transmission and transformation project feasibility indexes are evaluated according to the engineering practice. The construction difficulties of various design professional projects on the design side are integrated, the weight is graded and assigned by the analytic hierarchy process, the project design side feasibility indexes are finally calculated, the project early-stage evaluation and auxiliary decision-making are assisted, and the scientificity and maturity of the power transmission and transformation project feasibility evaluation are effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of feasibility indicators for power transmission and transformation projects, and particularly relates to a method and system for evaluating the feasibility indicators of power transmission and transformation projects based on design-side response. Background Technology

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

[0003] Power grid construction projects are highly specialized, exhibiting many industry characteristics: large investment, numerous supporting materials and equipment, significant impact of project quality on the overall project, stringent requirements on equipment delivery time and functional diversity, high technical difficulty, complex procedures, stringent work standards, and long construction periods. Due to the inherent uncertainties, large investments, and long cycles of power grid projects, the construction of transmission and transformation projects carries many risks.

[0004] The project feasibility study mainly conducts in-depth and detailed technical demonstrations and economic evaluations of the necessity, feasibility, and deliverability of the project. As the first step in implementing power grid planning and the front-end of power grid design, the power grid project feasibility study needs to take into account the power grid planning of various voltage levels, make efficient use of site and corridor resources based on actual site selection and route selection, and fully conduct comparative analysis of various schemes to provide a scientific basis for project approval decisions, construction plans, and construction schedules.

[0005] Given that power grid projects are characterized by large investments, long cycles, high technical difficulty, and challenges in coordination, it is essential to increase the depth of the feasibility study and systematically and quantitatively evaluate the potential risks and disruptive factors that may arise during the construction process.

[0006] The Analytic Hierarchy Process (AHP), originally proposed by American operations researcher Saaty, is a multi-objective decision analysis method that combines qualitative and quantitative approaches. The principle of AHP is to transform a complex problem requiring evaluation or decision-making into multiple levels. Relevant experts or evaluators then assess and score each level, constructing a judgment matrix for each level. The eigenvectors of these judgment matrices represent the weight information of each indicator, thus obtaining the weight information of the lowest-level indicator relative to the objective level, guiding the evaluator's decision-making.

[0007] Currently, due to the lack of scientific and comprehensive integration of important risk factors in power grid infrastructure projects in existing technologies, and the lack of a scientific hierarchical framework, it is impossible to accurately and effectively quantify and evaluate the risk factors of different power transmission and transformation projects. Summary of the Invention

[0008] To overcome the shortcomings of the existing technologies, this invention provides a method and system for evaluating the feasibility of power transmission and transformation projects based on design-side response. It integrates the construction difficulties of various design disciplines on the design side, assigns weights to them at different levels through the analytic hierarchy process, and finally calculates the feasibility indicators on the design side of the project. This is used to assist decision-making in the early evaluation of the project, and effectively improves the scientificity and maturity of the feasibility study evaluation of power transmission and transformation projects.

[0009] To achieve the above objectives, one or more embodiments of the present invention provide the following technical solutions:

[0010] The first aspect of this invention provides a method for evaluating the feasibility of power transmission and transformation projects based on design-side response.

[0011] The feasibility evaluation method for power transmission and transformation projects based on design-side response includes the following steps:

[0012] Analyze the influencing factors of power transmission and transformation project feasibility and construct a feasibility index system for power transmission and transformation projects based on design-side response;

[0013] Based on the constructed design-side response feasibility index system for power transmission and transformation projects, and combined with the analytic hierarchy process (AHP) to solve for the index weight values, a comprehensive evaluation model is formed that includes the AHP and the design-side response feasibility index system for power transmission and transformation projects.

[0014] Based on a comprehensive evaluation model and considering the actual engineering situation, the feasibility indicators of power transmission and transformation projects are evaluated.

[0015] The second aspect of this invention provides a feasibility evaluation system for power transmission and transformation projects based on design-side response.

[0016] A feasibility evaluation system for power transmission and transformation projects based on design-side response includes:

[0017] The feasibility index system construction module is configured to: analyze the influencing factors of the feasibility of power transmission and transformation projects, and construct a feasibility index system for power transmission and transformation projects based on the design-side response;

[0018] The comprehensive evaluation model forming module is configured as follows: based on the constructed design-side response feasibility index system of power transmission and transformation projects, the analytic hierarchy process (AHP) is used to solve for the index weight values, forming a comprehensive evaluation model that includes the AHP and the design-side response feasibility index system of power transmission and transformation projects.

[0019] The feasibility evaluation module is configured to evaluate the feasibility indicators of power transmission and transformation projects based on a comprehensive evaluation model and the actual engineering situation.

[0020] A third aspect of the present invention provides a computer-readable storage medium having a program stored thereon, which, when executed by a processor, implements the steps in the method for evaluating the feasibility index of power transmission and transformation projects based on design-side response as described in the first aspect of the present invention.

[0021] The fourth aspect of the present invention provides an electronic device, including a memory, a processor, and a program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps in the method for evaluating the feasibility index of power transmission and transformation projects based on design-side response as described in the first aspect of the present invention.

[0022] The above one or more technical solutions have the following beneficial effects:

[0023] 1. This invention provides a method and system for evaluating the feasibility of power transmission and transformation projects based on design-side response. It comprehensively considers and systematically analyzes factors such as the operational safety, economic rationality, and construction convenience of power grid projects, and takes into account the disruptive factors that may occur in the early stages of project advancement and the later stages of project construction to the greatest extent. The design-side feasibility (DSF) index can effectively reflect the important risks in the later design and construction plans, and effectively improve the scientific nature and maturity of project feasibility assessment.

[0024] 2. This invention establishes a hierarchical framework for feasibility indicators of power transmission and transformation projects based on design-side response. It constructs a category layer, a sub-category layer, and a factor layer. The category layer consists of three major professional categories, each with a sub-category layer containing several sub-categories. The factor layer contains several factors. The weights of the feasibility indicator system for power transmission and transformation projects based on design-side response are calculated using the analytic hierarchy process (AHP), and consistency index verification is performed. The comprehensive evaluation model proposed in this invention, which incorporates the AHP and the feasibility indicator system based on design-side response, improves the overall accuracy of the evaluation method.

[0025] 3. In this invention, the major categories include three professional categories: overhead lines A1, cable lines A2, and substation components A3. Overhead lines A1 is further divided into three subcategories: route selection B1, overhead structure B2, and overhead corridor B3. Cable lines A2 is divided into two subcategories: cable electrical engineering B4 and cable civil engineering B5. Substation components A3 is divided into two subcategories: civil engineering B6 and electrical engineering B7. Furthermore, the following factor layer is innovatively proposed:

[0026] The factors corresponding to B1 are: complex geological lithology, excessive topographic amplification factor, tortuosity factor >1.2, and missing basic data;

[0027] The factors corresponding to B2 are: ultra-high towers, difficulty in arranging tension fields, unconventional foundation types, and T-connections of old lines;

[0028] The corresponding factor layer for B3 is: complex cross-spanning and complex channel cleanup.

[0029] The corresponding factor layer for B4 is: cable T-connection, vertical laying, and poor existing channel conditions;

[0030] The factors corresponding to B5 are: special drilling (railway, highway, etc.), relocation of low-voltage lines and other pipelines, pipeline crossings, passage clearing, and road surface damage;

[0031] The factor layers corresponding to B6 are: construction power supply access, water supply municipal pipeline access, access road repair, and civil engineering connection of incoming and outgoing lines.

[0032] The corresponding factors for B7 are: the substation needs to be completely shut down, basic data is missing, the old site needs to be upgraded or expanded, the protection channel is not available, the protection configuration involves distributed power sources, unconventional main wiring, and old bays are being used.

[0033] This invention establishes a layered framework for risk factors in power transmission and transformation projects from the design side. Since the design work runs through all stages of the project, the design-side framework is comprehensive and better reflects the feasibility of the project. The innovative three-layer evaluation index system proposed in this invention scientifically and completely integrates the important risk factors existing in power transmission and transformation infrastructure projects on the power grid design side, enabling very accurate and convenient analysis of the feasibility indicators of power transmission and transformation projects.

[0034] 4. This invention calculates the estimation adjustment coefficient and the proportion of the estimated cost of each item corresponding to overhead lines, cable lines and substations in the major category layer to the total estimated cost. Since the cost itself reflects important information such as the internal construction scale and key point schemes of the project, the combination of the analytic hierarchy process and the feasibility study cost estimation, and the correction of the risk matrix of the major category layer with cost coefficients, further improves the accuracy of the final evaluation results.

[0035] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0036] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0037] Figure 1 This is a flowchart of the method in the first embodiment.

[0038] Figure 2 This is a system structure diagram of the second embodiment. Detailed Implementation

[0039] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0040] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations of the present invention.

[0041] Where there is no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0042] The overall idea proposed in this invention is to address the current situation where feasibility studies for power grid projects cannot conduct horizontal evaluations of different engineering risk factors. This invention provides a method for evaluating feasibility study indicators for power transmission and transformation projects based on design-side response. By integrating the construction difficulties of various design disciplines on the design side and assigning weights to them at different levels, the design-side feasibility (DSF) index of the project is finally calculated and used to assist decision-making in the early evaluation of the project.

[0043] This invention integrates key risk factors in power grid infrastructure projects and constructs a framework system while ensuring the completeness, scientific validity, and quantifiability of the indicators. The framework is structured horizontally along professional dimensions and vertically along causal dimensions. The weights of the indicators are assigned using the Analytic Hierarchy Process (DSF). After the framework is established, the feasibility DSF index for project design is calculated by combining the estimated cost ratio.

[0044] Example 1

[0045] This embodiment discloses a method for evaluating the feasibility of power transmission and transformation projects based on design-side response.

[0046] like Figure 1 As shown, the feasibility evaluation method for power transmission and transformation projects based on design-side response includes the following steps:

[0047] Analyze the influencing factors of power transmission and transformation project feasibility and construct a feasibility index system for power transmission and transformation projects based on design-side response;

[0048] Based on the constructed design-side response feasibility index system for power transmission and transformation projects, and combined with the analytic hierarchy process (AHP) to solve for the index weight values, a comprehensive evaluation model is formed that includes the AHP and the design-side response feasibility index system for power transmission and transformation projects.

[0049] Based on a comprehensive evaluation model and considering the actual engineering situation, the feasibility indicators of power transmission and transformation projects are evaluated.

[0050] In this embodiment, key risk factors in power grid infrastructure projects are integrated, and a feasibility indicator system for transmission and transformation projects based on design-side response is constructed, ensuring that the indicators are complete, scientific, and quantifiable. Specifically, a complete transmission and transformation project design involves the coordinated efforts of seven major disciplines: primary substation, secondary substation, substation civil engineering, line electrical engineering, line structure, communication, and technical economics.

[0051] In constructing the indicator system, this invention integrates power transmission and transformation engineering design by profession, dividing it into three major professional categories. Each major professional category is further divided into subcategories. The feasibility factors of the project are then categorized and organized according to the subcategories. A feasibility indicator system for power transmission and transformation engineering based on design-side response is established. Specifically, power transmission and transformation engineering design is integrated by profession, divided into a major category layer, a minor category layer, and a factor layer. The major category layer contains three major professional categories, each major professional category is further divided into subcategories, and each minor professional category contains several factors. The various minor professional categories constitute the minor category layer, and the various factors constitute the factor layer.

[0052] The major professional categories are: Overhead Lines A1, Cable Lines A2, and Substation Sections A3. Overhead Lines A1 is further divided into three subcategories: Route Selection B1, Overhead Structure B2, and Overhead Corridor B3. Cable Lines A2 is divided into two subcategories: Cable Electrical Engineering B4 and Cable Civil Engineering B5. Substation Sections A3 is divided into two subcategories: Civil Engineering B6 and Electrical Engineering B7. See Table 1 for details.

[0053] Table 1. Feasibility Index System for Power Transmission and Transformation Projects Based on Design-Side Response

[0054]

[0055] Furthermore, the feasibility index system for power transmission and transformation projects based on design-side response includes overhead lines (A1), cable lines (A2), and substation components (A3):

[0056] The overhead line A1 includes route selection B1, the overhead body B2, and the overhead corridor B3;

[0057] The cable line A2 includes cable electrical B4 and cable civil engineering B5;

[0058] The substation section A3 includes civil engineering section B6 and electrical section B7;

[0059] Path selection B1 includes:

[0060] ① Complex geology and lithology: After the route plan is determined, geological samples are collected along the route, and the geological and lithological complexity of the samples is calculated.

[0061] ② The terrain amplification factor is too large: After the route plan is determined, the terrain amplification factor is calculated by collecting the proportion of the route length of different terrains along the route;

[0062] ③ Tortuousness coefficient > 1.2: This is obtained by calculating the ratio of path length to displacement length after the path scheme is determined;

[0063] ④ Missing basic data: This is determined by organizing the basic data to see if any data is missing;

[0064] The suspended body B2 includes:

[0065] ① Ultra-high towers: Based on the terrain undulations and the initial tower (pole) positions that cross the path, the tower height is collected, and it is determined whether the tower height exceeds the general design tower height for the same voltage level;

[0066] ② Difficulty in setting up the tensioning field: After the route plan is determined, it is necessary to determine whether the tensioning field needs to occupy roads, orchards, etc. by setting up the tensioning field in the overhead line section of the route map.

[0067] ③ Unconventional foundation types: determined by eliminating common stepped, slab, and cast-in-place pile foundations;

[0068] ④ Old lines with T-connections: The determination is made by whether the service life of the T-connection towers exceeds 30 years;

[0069] Elevated walkway B3 includes:

[0070] ① Complex crossings: This is determined by verifying whether the route map includes crossings of high-speed railways, highways, rivers, power lines, etc., and calculating the complexity of crossings.

[0071] ②The channel clearing is complex: the cost per kilometer of channel clearing is determined by calculating whether it exceeds 20% of the multi-dimensional reference price published that year;

[0072] Cable electrical B4 includes:

[0073] ① Cable T-connection: Determined by whether a T-type connector is required based on the cable route plan;

[0074] ② Vertical laying: This is determined by whether there is a height difference > 3m in the cable laying;

[0075] ③ Poor condition of existing passageways: This is determined through on-site surveys to identify issues such as water accumulation, tangled and disordered cables, and the need to dismantle and reinstall existing supports that may affect cable laying.

[0076] Cable civil engineering B5 includes:

[0077] ①Special drilling crossings: These are obtained by collecting data on whether the tunnel crosses railways, highways, rivers, factories, etc.

[0078] ② Relocation of low-voltage lines and other pipelines: This is obtained by collecting data on whether the new civil engineering plan involves the relocation of low-voltage lines and other pipelines;

[0079] ③ Pipeline intersections: This is obtained by collecting data on the intersections between newly constructed cable civil engineering routes and various pipelines;

[0080] ④ The channel clearing is complex: This is obtained by comparing the construction site and requisition cost per kilometer of the civil engineering route for newly built cables with those for conventional cable projects.

[0081] ⑤ Road surface damage: This is determined by collecting data on whether the construction route for the new cable will require damage to the existing road surface;

[0082] Substation civil engineering B6 includes:

[0083] ① Construction power supply access: This is determined by assessing the complexity of the construction power supply access.

[0084] ② Water source municipal pipeline network access: This is obtained by collecting data on whether water source municipal pipeline network access is involved;

[0085] ③ Complex access road repairs: This was determined by collecting data on whether the repairs to the access road would require the occupation of existing roads, orchards, etc.

[0086] ④ Civil engineering connection of incoming and outgoing lines: This is obtained by collecting data on whether there are large differences in elevation or mismatch in civil engineering methods when the civil engineering connection of the substation's incoming and outgoing lines is connected.

[0087] Transformer equipment B7 includes:

[0088] ① Substations need to be completely shut down: This is obtained by collecting data on whether a complete shutdown of the substation is required in the power outage transition plan;

[0089] ② Missing basic data: This is done by organizing the basic data to determine if any data is missing.

[0090] ③ Capacity expansion and renovation of existing substations: This is obtained by collecting data on whether the scale of newly constructed substation projects represents an expansion or renovation of the original substation site;

[0091] ④ Protection channels are not available: This is obtained by collecting data on whether the newly built substation and the upstream substation have protection channels.

[0092] ⑤ Protection configuration involves distributed power sources: whether the lines to be T-connected or reconnected according to the planning involve distributed power sources;

[0093] ⑥ Unconventional main wiring: This is obtained by collecting data on whether there are unconventional main wiring configurations in the general design of substations;

[0094] ⑦ Old bay activation: This is obtained by collecting data on whether old bays are activated in the upstream power supply of the newly built station.

[0095] Furthermore, based on the constructed feasibility index system for power transmission and transformation projects using the design-side response, the index weight values ​​are solved using the analytic hierarchy process (AHP), specifically as follows:

[0096] (1) The composition of the feasibility index system for power transmission and transformation projects based on design side response, and the construction of a three-level evaluation index system consisting of major category layer, minor category layer and factor layer;

[0097] (2) Experts compare and score the importance of each indicator in the same layer of the feasibility index system for power transmission and transformation projects based on design side response relative to the indicators in the next layer according to the judgment matrix scaling table, and construct a judgment matrix.

[0098] (3) Calculate the largest eigenvalue λ of the judgment matrix. max and eigenvector W;

[0099] (4) Perform a consistency check on the judgment matrix;

[0100] (5) By normalizing the feature vectors, the weights of each indicator in the comprehensive evaluation model are determined.

[0101] Furthermore, the major categories include: overhead lines A1, cable lines A2, and substation sections A3;

[0102] The sub-categories include: route selection B1, overhead structure B2, overhead corridor B3, cable and electrical B4, cable and civil engineering B5, civil engineering B6, and electrical B7;

[0103] The key factors include: complex geological lithology, excessive topographic amplification factor, tortuosity factor >1.2, and lack of basic data; ultra-high towers, difficulties in tension field layout, unconventional foundation types, and old line T-connections; complex crossings and complex passage clearing. Cable T-connections, vertical laying, and poor existing passage conditions; special drilling crossings, relocation of low-voltage lines and other pipelines, pipeline crossings, passage clearing, and road damage; construction power supply access, water source municipal pipeline access, access road repair, and civil engineering connection of incoming and outgoing lines; substations requiring complete shutdown, lack of basic data, capacity expansion at old sites, expansion at old sites, lack of protection passages, protection configuration involving distributed power sources, unconventional main wiring, and activation of old bays;

[0104] For each major category layer, pairwise comparisons and scores are performed on the relative importance of each subcategory within the corresponding minor category layer. Similarly, pairwise comparisons and scores are performed on the relative importance of each factor within the corresponding factor layer of each minor category layer. This constructs a judgment matrix for each minor category layer. and the factor layer judgment matrix

[0105] Where b i1 =c i1 =1.

[0106] A judgment matrix is ​​constructed hierarchically based on professional fuzzy evaluation samples (involving development, construction, operation and maintenance, information and communication, regulation, planning, etc.) for experts to quantitatively compare each indicator at the same level pairwise, where b ij and c ij The values ​​can be assigned using the 1-9 scale proposed by Saaty, as shown in Table 2.

[0107] For example, matrix c 12 Characterization: The geological lithology is complex, and the increase in the C11 relative to topography is excessively large. The importance of C12 is also considered; if C12 is considered more important than C11, then c... 11 =1,c 12 =5.

[0108] Table 2 Scale Table for Judging Matrix

[0109]

[0110]

[0111] Furthermore, the weights of each indicator in the hierarchical model are determined as follows:

[0112] Calculate the eigenvectors W of the judgment matrices respectively, and normalize the vectors W to obtain the factor layer weight coefficients. and subclass layer weight coefficient

[0113]

[0114] Furthermore, a consistency check is performed on the judgment matrix, specifically as follows:

[0115] Calculate the maximum eigenvalue λ max The consistency index CI and the random consistency index RI are given by Saaty, as shown in Table 3.

[0116]

[0117] Among them, w i is the weighting coefficient, and n is the order of the judgment matrix J.

[0118] Table 3 Reference Values ​​for the Judgment Matrix RI

[0119] RI 0 0 0.58 0.90 1.12 1.24 1.32 1.41 1.45 1.49

[0120] Finally, calculate the random consistency ratio (CR):

[0121] CR = CI / RI

[0122] When CR < 0.1, the matrix is ​​considered to be consistent; if the matrix is ​​not consistent, the judgment value should be adjusted to meet the requirements.

[0123] Furthermore, based on the comprehensive evaluation model and according to the actual engineering situation, the feasibility indicators of the power transmission and transformation project are evaluated, specifically as follows:

[0124] (1) Based on the feasibility study plan of the power transmission and transformation project design, check whether the risk factors have occurred one by one according to the factor layer criteria, and generate the factor layer risk matrix.

[0125]

[0126] in,

[0127] Where, r ij Whether c occurs in actual engineering ij The value of the factor is 1 if it occurs, and 0 if it does not occur.

[0128] (2) Generate a risk matrix for major categories based on the weight coefficients.

[0129]

[0130] (3) Calculate the estimated adjustment factor, where the estimated adjustment factor is specifically:

[0131] α=[α JK ,α DL ,α BD ],

[0132] Where, α JK α DL α BD These are the percentages of the total estimated cost for each of the overhead lines, cable lines, and substation components within the major category layer.

[0133] (4) Calculate the feasibility index evaluation score. The specific formula for calculating the feasibility index evaluation score is as follows:

[0134]

[0135] Where α is the estimated adjustment factor, R A This is a risk matrix with broad risk categories. The higher the DSF score, the stronger the feasibility.

[0136] Example 2

[0137] This embodiment discloses a feasibility evaluation system for power transmission and transformation projects based on design-side response.

[0138] like Figure 2As shown, the feasibility evaluation system for power transmission and transformation projects based on design-side response includes:

[0139] The feasibility index system construction module is configured to: analyze the influencing factors of the feasibility of power transmission and transformation projects, and construct a feasibility index system for power transmission and transformation projects based on the design-side response;

[0140] The comprehensive evaluation model forming module is configured as follows: based on the constructed design-side response feasibility index system of power transmission and transformation projects, the analytic hierarchy process (AHP) is used to solve for the index weight values, forming a comprehensive evaluation model that includes the AHP and the design-side response feasibility index system of power transmission and transformation projects.

[0141] The feasibility evaluation module is configured to evaluate the feasibility indicators of power transmission and transformation projects based on a comprehensive evaluation model and the actual engineering situation.

[0142] Example 3

[0143] The purpose of this embodiment is to provide a computer-readable storage medium.

[0144] A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps in the method for evaluating the feasibility index of power transmission and transformation projects based on design-side response as described in Embodiment 1 of this disclosure.

[0145] Example 4

[0146] The purpose of this embodiment is to provide an electronic device.

[0147] An electronic device includes a memory, a processor, and a program stored in the memory and executable on the processor. When the processor executes the program, it implements the steps in the method for evaluating the feasibility index of power transmission and transformation projects based on design-side response as described in Embodiment 1 of this disclosure.

[0148] The steps and methods involved in the apparatuses of Embodiments 2, 3, and 4 above correspond to those in Embodiment 1. For specific implementation details, please refer to the relevant description section of Embodiment 1. The term "computer-readable storage medium" should be understood as a single medium or multiple media including one or more instruction sets; it should also be understood as including any medium capable of storing, encoding, or carrying an instruction set for execution by a processor and enabling the processor to perform any of the methods in this invention.

[0149] Those skilled in the art will understand that the modules or steps of the present invention described above can be implemented using general-purpose computer devices. Optionally, they can be implemented using computer-executable program code, thereby allowing them to be stored in a storage device for execution by a computer device, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. The present invention is not limited to any particular combination of hardware and software.

[0150] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this 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 without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A method for evaluating the feasibility of a power transmission and transformation project based on the design side response, characterized in that, Includes the following steps: Analyze the influencing factors of power transmission and transformation project feasibility and construct a feasibility index system for power transmission and transformation projects based on design-side response; Based on the constructed design-side response feasibility index system for power transmission and transformation projects, and combined with the analytic hierarchy process (AHP) to solve for the index weight values, a comprehensive evaluation model is formed that includes the AHP and the design-side response feasibility index system for power transmission and transformation projects. Based on the comprehensive evaluation model and according to the actual situation of the project, the feasibility indicators of the power transmission and transformation project are evaluated. Based on the design-side response, a hierarchical framework system of feasibility factor indicators for power transmission and transformation projects was constructed, which includes a major category layer, a minor category layer, and a factor layer. The major category layer consists of three major professional categories, and the major category layer is further divided into minor category layers, which include several professional minor categories. The minor category layer is further divided into factor layers, which include several factors. Based on the comprehensive evaluation model and according to the actual engineering situation, the feasibility indicators of the power transmission and transformation project are evaluated, specifically as follows: (1) Generate a risk matrix for the factor layer based on the actual engineering situation. : ， in, (2) Generate a risk matrix for major categories based on weight coefficients. : ， (3) Calculate the estimated adjustment factor, where the estimated adjustment factor is specifically: ， in, , , These are the percentages of the total estimated cost for each of the overhead lines, cable lines, and substation components within the major category layer; (4) Calculate the feasibility evaluation score. The specific formula for calculating the feasibility evaluation score is as follows: ， in, To estimate the adjustment factor, This is a risk matrix with broad risk categories. The higher the DSF score, the stronger the feasibility.

2. The method for evaluating the feasibility of power transmission and transformation projects based on design-side response as described in claim 1, characterized in that, The feasibility index system for power transmission and transformation projects based on design-side response includes overhead lines (A1), cable lines (A2), and substation components (A3): The overhead line A1 includes route selection B1, the overhead body B2, and the overhead corridor B3; The cable line A2 includes cable electrical B4 and cable civil engineering B5; The substation section A3 includes civil engineering section B6 and electrical section B7; Path selection B1 includes: ① Complex geology and lithology: After the route plan is determined, geological samples are collected along the route, and the geological and lithological complexity of the samples is calculated. ② The terrain amplification factor is too large: After the route plan is determined, the terrain amplification factor is calculated by collecting the proportion of the route length of different terrains along the route; ③ Tortuousness coefficient > 1.2: This is obtained by calculating the ratio of path length to displacement length after the path scheme is determined; ④ Missing basic data: This is determined by organizing the basic data to see if any data is missing; The elevated main body B2 includes: ① Ultra-high towers: Based on the terrain undulations and the initial tower locations that cross the route, the tower height is collected, and it is determined whether the tower height exceeds the general design tower height for the same voltage level; ② Difficulty in setting up the tensioning plant: After the route plan is determined, it is necessary to determine whether the tensioning plant needs to occupy roads or orchards by setting up the cable-laying section in the route map; ③ Unconventional foundation types: determined by eliminating common stepped, slab, and cast-in-place pile foundations; ④ Old lines with T-connections: The determination is made by whether the service life of the T-connection towers exceeds 30 years; Elevated walkway B3 includes: ① Complex crossings: This is determined by verifying whether the route map includes crossings of high-speed railways, highways, rivers, power lines, etc., and calculating the complexity of crossings. ②The channel clearing is complex: the cost per kilometer of channel clearing is determined by calculating whether it exceeds 20% of the multi-dimensional reference price published that year; Cable electrical B4 includes: ① Cable T-connection: Determined by whether a T-type connector is required based on the cable route plan; ② Vertical laying: This is determined by whether there is a height difference > 3m in the cable laying; ③ Poor condition of existing passageways: This is determined through on-site surveys to identify issues such as water accumulation, tangled and disordered cables, and the need to dismantle and reinstall existing supports that could affect cable laying. Cable civil engineering B5 includes: ①Special drilling crossings: This is obtained by collecting data on whether drilling crosses railways, highways, rivers, or factories; ② Relocation of low-voltage lines and other pipelines: This is obtained by collecting data on whether the new civil engineering plan involves the relocation of low-voltage lines and other pipelines; ③ Pipeline intersections: This is obtained by collecting data on the intersections between newly constructed cable civil engineering routes and various pipelines; ④ The channel clearing is complex: This is obtained by comparing the construction site and requisition cost per kilometer of the civil engineering route for newly built cables with those for conventional cable projects. ⑤ Road surface damage: This is determined by collecting data on whether the construction route for the new cable will require damage to the existing road surface; Substation civil engineering B6 includes: ① Construction power supply access: This is determined by assessing the complexity of the construction power supply access. ② Water source municipal pipeline network access: This is obtained by collecting data on whether water source municipal pipeline network access is involved; ③ Complex road repairs: This was determined by collecting data on whether road repairs would require the occupation of existing roads or orchards; ④ Civil engineering connection of incoming and outgoing lines: This is obtained by collecting data on whether there are large elevation differences or mismatches in civil engineering methods in the connection of incoming and outgoing lines of the substation; Transformer equipment B7 includes: ① Substations need to be completely shut down: This is obtained by collecting data on whether a complete shutdown of the substation is required in the power outage transition plan; ② Missing basic data: This is done by organizing the basic data to determine if any data is missing. ③ Capacity expansion and renovation of existing substations: This is obtained by collecting data on whether the scale of newly constructed substation projects represents an expansion or renovation of the original substation site; ④ Protection channels are not available: This is obtained by collecting data on whether the newly built substation and the upstream substation have protection channels. ⑤ Protection configuration involves distributed power sources: whether the lines to be T-connected or reconnected according to the planning involve distributed power sources; ⑥ Unconventional main wiring: This is obtained by collecting data on whether there are unconventional main wiring configurations in the general design of substations; Activation of old intervals: This is obtained by collecting data on whether old intervals are activated in the upstream power supply of the newly built station.

3. The method for evaluating the feasibility of power transmission and transformation projects based on design-side response as described in claim 1, characterized in that, Based on the constructed design-side response feasibility index system for power transmission and transformation projects, and combined with the analytic hierarchy process (AHP) to solve for the index weight values, the specific steps are as follows: (1) The composition of the feasibility index system for power transmission and transformation projects based on design side response, and the construction of a three-level evaluation index system consisting of major category layer, minor category layer and factor layer; (2) Experts compare and score the importance of each indicator in the same layer of the feasibility index system for power transmission and transformation projects based on design side response with the indicators in the next layer according to the judgment matrix scaling table, and construct a judgment matrix. (3) Calculate the largest eigenvalue of the judgment matrix. and eigenvectors ; (4) Perform a consistency check on the judgment matrix; (5) Determine the weight of each indicator in the comprehensive evaluation model.

4. The method for evaluating the feasibility of power transmission and transformation projects based on design-side response as described in claim 3, characterized in that: The major categories include: overhead lines A1, cable lines A2, and substation sections A3; The sub-categories include: route selection B1, overhead structure B2, overhead corridor B3, cable and electrical B4, cable and civil engineering B5, civil engineering B6, and electrical B7; The key factors include: complex geological lithology, excessive topographic amplification factor, tortuosity factor >1.2, and lack of basic data; ultra-high towers, difficulty in tension field layout, unconventional foundation types, and old line T-connections; complex crossings and complex passage clearing; cable T-connections, vertical laying, and poor existing passage conditions; special drilling and crossings, relocation of low-voltage lines and other pipelines, pipeline crossings, passage clearing, and road surface damage; access to construction power supply, access to municipal water supply networks, repair of access roads, and civil engineering connection of incoming and outgoing lines; substations requiring complete shutdown, lack of basic data, capacity expansion at old sites, expansion at old sites, lack of protection passages, protection configuration involving distributed power sources, unconventional main wiring, and activation of old bays; For each major category layer, pairwise comparisons and scores are performed on the relative importance of each subcategory within the corresponding minor category layer. Similarly, pairwise comparisons and scores are performed on the relative importance of each factor within the corresponding factor layer of each minor category layer. This constructs a judgment matrix for each minor category layer. and the factor layer judgment matrix : , ,in .

5. The method for evaluating the feasibility of power transmission and transformation projects based on design-side response as described in claim 3, characterized in that, The consistency check of the judgment matrix is ​​performed as follows: Calculate the largest eigenvalue of the judgment matrix and consistency indicators Introducing the random consistency index Calculate the random consistency ratio ; when If the matrix is ​​consistent, it is considered to be consistent; otherwise, the judgment matrix is ​​reconstructed and adjusted.

6. The method for evaluating the feasibility of power transmission and transformation projects based on design-side response as described in claim 3, characterized in that, The weights of each indicator in the hierarchical model are determined as follows: For vectors Perform normalization to obtain the factor layer weight coefficients. and subclass layer weight coefficient : ， ， Where wi is the weight coefficient and n is the order of the judgment matrix.

7. A feasibility evaluation system for power transmission and transformation projects based on design-side response, employing the feasibility evaluation method for power transmission and transformation projects based on design-side response as described in any one of claims 1-6, characterized in that: include: The feasibility index system construction module is configured to: analyze the influencing factors of the feasibility of power transmission and transformation projects, and construct a feasibility index system for power transmission and transformation projects based on the design-side response; The comprehensive evaluation model forming module is configured as follows: based on the constructed design-side response feasibility index system of power transmission and transformation projects, the analytic hierarchy process (AHP) is used to solve for the index weight values, forming a comprehensive evaluation model that includes the AHP and the design-side response feasibility index system of power transmission and transformation projects. The feasibility evaluation module is configured to evaluate the feasibility indicators of power transmission and transformation projects based on a comprehensive evaluation model and the actual engineering situation.

8. A computer-readable storage medium having a program stored thereon, characterized in that, When executed by the processor, the program implements the steps in the method for evaluating the feasibility index of power transmission and transformation projects based on design-side response as described in any one of claims 1-6.

9. An electronic device, comprising a memory, a processor, and a program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the steps in the method for evaluating the feasibility index of power transmission and transformation projects based on design-side response as described in any one of claims 1-6.

Images