Alternating current and direct current power distribution network line planning system
Through the AC and DC distribution network line planning system, the problems of inaccurate cost estimation and environmental interference are solved, the effects of cost reduction and environmental protection are achieved, and the sustainable development of distribution lines are promoted.
Patent Information
- Application Number
- CN202311815414.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2025-07-08
AI Technical Summary
The cost estimates in the existing distribution line planning are inaccurate, resulting in project cost overruns and delays, and insufficient attention to environmental interference, affecting the balanced and sustainable development of the ecosystem.
It provides an AC and DC distribution network line planning system, including distribution network database, distribution line statistical analysis module, comprehensive cost expectation analysis module, environmental interference expectation analysis module and data integration processing module. By analyzing the soil and environment of the construction area, it evaluates the construction cost and environmental interference degree, and optimizes the line path to reduce costs and reduce environmental impact.
It improves the accuracy of cost estimation, reduces construction costs, reduces environmental damage, achieves the goals of environmental protection and sustainable development, and improves the efficiency and reliability of the power system.
Smart Images
Figure CN120278845A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of distribution line planning, and specifically provides an AC / DC distribution network line planning system. Background Art
[0002] With the rapid development of social economy, the demand for electricity is constantly increasing, which puts forward higher requirements for aspects such as the power supply capacity, power quality, and power supply reliability of the power system. The traditional AC distribution network cannot meet the growing power supply demand. The AC / DC distribution network line can transmit both AC and DC electric energy simultaneously, reduce the loss of energy conversion, and meet the needs of different loads. In order to reduce the construction cost of the AC / DC distribution network line, an AC / DC distribution network line planning system is needed.
[0003] Nowadays, there are still some deficiencies in the distribution line planning, which are specifically reflected in the following aspects: (1) The current statistics of the comprehensive cost in the distribution line planning are not comprehensive and systematic. The comprehensive construction cost of the distribution line includes the construction cost and the dispatching cost. Among them, the construction cost is affected by the terrain and environment. Incomplete cost statistics may lead to inaccurate estimation of the project budget, resulting in cost overruns of the project, increasing the additional financial burden. At the same time, inaccurate cost estimation will also lead to project delays, further causing project failures or other problems.
[0004] (2) The current distribution line planning does not pay enough attention to the interference of line construction on the environment. The construction of the distribution line requires laying cables or erecting poles on the ground or underground. The areas through which the distribution line passes may include various ecosystems, and the construction process may cause damage to the habitats of animals and plants, affecting the balance of the local ecosystem. Therefore, the lack of analysis of the interference of construction on the environment is not conducive to promoting the sustainable development of the distribution line, and at the same time reduces the rationality level of the distribution line planning. Summary of the Invention
[0005] Aiming at the deficiencies of the prior art, the present invention provides an AC / DC distribution network line planning system, which can effectively solve the problems involved in the above background art.
[0006] To achieve the above object, the present invention is realized through the following technical solutions: The present invention provides an AC / DC distribution network line planning system, including: a distribution network database for storing the distribution line planning data of the target distribution network.
[0007] The distribution line statistical analysis module is used to conduct statistical classification on the target distribution lines, thereby analyzing the average altitude of each target line segment. The comprehensive cost expectation analysis module is used to analyze the comprehensive costs of each target line segment, including a construction cost analysis unit and a scheduling cost analysis unit, and comprehensively calculate the comprehensive cost rationality evaluation index of each target line segment. The environmental interference expectation analysis module is used to analyze the degree of environmental interference of each target line segment, and comprehensively calculate the environmental interference rationality evaluation index of each target line segment. The data integration and processing module is used to integrate and process the data, and comprehensively evaluate the rationality of the target distribution line planning.
[0008] As a further method, the distribution line planning data of the target distribution network includes: the reference standards for distribution line construction, such as suitable soil humidity, suitable soil acidity index, and suitable soil relative density; the suitable air pressure and critical day-night temperature difference for distribution line construction; the land planning cost per unit area corresponding to each section; the material cost per unit line length, the power distribution loss energy per unit line length, and the unit loss energy cost; the expected scheduling cost of each target line segment; the mapped area of each target line segment for construction; the area of the critical coverage environmental protection area for line construction; the threshold value of the comprehensive cost rationality evaluation index; the threshold value of the environmental interference rationality evaluation index; and the threshold value of the overall planning rationality evaluation index.
[0009] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:
[0010] (1) By providing an AC / DC distribution network line planning system, the present invention analyzes the soil and environment of the construction area respectively, evaluates the construction cost based on the construction conditions, and evaluates the scheduling cost of line construction based on the lot value and the planning of the line path. Further, it evaluates the expected comprehensive cost of the distribution line planning, improves the accuracy of cost estimation, and at the same time comprehensively evaluates the degree of environmental interference of line construction according to the area of the environmental protection area occupied by line construction and the coverage area of various types of green vegetation, thereby avoiding the damage to the environment caused by line construction and achieving the goals of environmental protection and sustainable development.
[0011] (2) By analyzing the soil texture and environmental severity of the distribution line planning and construction area, the present invention helps engineers determine the stability of the line support structure, contributes to determining the requirements of the foundation engineering, reflects the difficulty level of distribution line construction indirectly, further evaluates the distribution line planning and construction cost, and at the same time the analysis of the construction environment can help optimize the distribution line planning, avoid carrying out construction work in areas with severe environment, and reduce the construction cost.
[0012] (3) By analyzing the land value of the area for distribution line planning and construction and the planning of the line path, the present invention can avoid passing through high-value areas, reduce the cost of land scheduling, and reduce the damage to the land, retaining the land value. At the same time, the line path planning can optimize the line path, reduce the length of the power line and transmission losses, thereby improving the efficiency of the power system. On the other hand, a reasonable line path can improve the maintainability of the power line, contributing to the improvement of the reliability of the power system.
[0013] (4) By analyzing the area occupied by the distribution line planning in the environmental protection area and the coverage area of various types of green vegetation, the present invention evaluates the degree of environmental interference caused by the distribution line construction, which helps to reduce the environmental interference caused by the distribution line construction through reasonable planning, technological innovation and environmental protection measures, avoid overdevelopment and land damage, achieve the goals of environmental protection and sustainable development, promote the sustainable development of the distribution line, and improve the planning rationality level of the distribution line at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The present invention will be further described with reference to the accompanying drawings. However, the embodiments in the drawings do not constitute any limitation to the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to the following drawings without creative efforts.
[0015] Figure 1 It is a schematic diagram of the connection of the system modules of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0017] Referring to Figure 1 As shown, the present invention provides an AC / DC distribution network line planning system, including: a distribution network database for storing the distribution line planning data of the target distribution network.
[0018] Specifically, the distribution line planning data of the target distribution network includes: the reference standards for the construction of distribution lines, such as suitable soil humidity, suitable soil acidity index, and suitable soil relative density; the suitable air pressure and critical day-night temperature difference for the construction of distribution lines; the land planning cost per unit area corresponding to each section; the material cost per unit line length; the distribution loss energy per unit line length and the unit loss energy cost; the expected scheduling cost for each target line section; the mapped area for the construction of each target line section; the area of the critical coverage environmental protection area for line construction; the threshold of the comprehensive cost rationality evaluation index; the threshold of the environmental interference rationality evaluation index; and the threshold of the overall planning rationality evaluation index.
[0019] The distribution line statistical analysis module is used to conduct statistical classification on the target distribution lines, thereby analyzing the average altitude of each target line section.
[0020] In a specific embodiment, the operation model of the data center: P DC = P w + f(P w ), P W = P work + P delay , where P W is the workload of the data center, f(P W ) is the refrigeration load of the data center, P work is the load instantaneously processed by the data center, P delay is the load processed with delay by the data center, k1 and k2 are refrigeration load parameters, and P0 is the critical value for the selection of the data center refrigeration method.
[0021] It should be noted that based on the set distribution network structure and the operation model of the data center, by solving through the gurobi solver on matlab2020b, the preliminary line planning result of the distribution network can be obtained.
[0022] In a specific embodiment, the reasonable planning of the AC / DC distribution lines of the distribution network needs to consider the transfer of the supplied load over time. The load types in the distribution system include DC loads such as data centers, charging piles, and air conditioners. Taking the data center as an example, the time-transfer characteristics of the load are analyzed in detail. The data center can divide the power load to be processed into non-delay tasks and delayable tasks. Among them, non-delay tasks include instant information calculation and voice services, etc., and delayable services include data backup, system update, etc. The processing of delayable services can be completed between the moment of receiving the task and the given deadline, and its time-delay property endows the data center with demand response characteristics. When the electricity price is high or the server utilization rate is too high, the data center can transfer the load corresponding to the delayable services in terms of time.
[0023] The specific implementation of load transfer is as follows: For a data center at any given time, the load expression to be processed at that time is In the formula: d t is the total load that the data center needs to process at time t; a t is the non-delayable service processed at this time; is the delayable service processed at this time; Q is the set of delayable services.
[0024] For processing, it is necessary to obtain information related to the delayable data processing load of the data center, such as the upper limit of the delayable time and the processing time of each data processing request. When the typical daily data of the data center in the given planning scenario is available, the total sum of the delayable services within the day can be calculated, that is
[0025] For the delayable services received by the data center, starting from the receiving moment, the data center arranges the operation plan according to the required processing time limit and its own server limitations. For each delayable service, the calculation queue constraint should be satisfied: In the formula: is the length of the server work queue of the delayable service to be processed; ensures that the queue length is non-negative; indicates that for any pending queue within a typical day, the amount of pending tasks at the initial and ending moments of the typical day in the data center is 0.
[0026] Specifically, analyzing the average altitude of each target line segment, the specific analysis process is as follows: Divide the distribution lines of the distribution network into segments and label them as each target line segment. At the same time, deploy several altitude detection points on the surface of the target line segment to obtain the altitude H of each altitude detection point of each target line segment ij , and calculate the average altitude of each target line segment according to the numerical expression In the formula, i represents the number of each target line segment, i = 1, 2, 3,..., n, n represents the total number of target line segments, j represents the number of each altitude detection point, j = 1, 2, 3,..., m, and m represents the total number of altitude detection points.
[0027] It should be noted that in this embodiment, a GPS receiver is used to obtain the altitude of each altitude detection point, and then the average altitude of each target line segment is analyzed. Different altitudes may require different cable types, insulating materials, and support structures to cope with mountainous, plain, or other terrain conditions. At the same time, the altitude will also affect the load capacity and maintenance requirements of the line, thus having a certain impact on the construction cost. Understanding the altitude of the region can help power companies better design power lines, avoid construction operations in high-altitude dangerous areas, reduce construction costs, and improve the stability of the power system.
[0028] The comprehensive cost expectation analysis module is used to analyze the comprehensive cost of each target line segment, including a construction cost analysis unit and a dispatching cost analysis unit, and comprehensively calculate the comprehensive cost rationality evaluation index of each target line segment.
[0029] Specifically, the construction cost analysis unit is used to analyze the planned construction environment. The specific analysis process is as follows: Deploy several soil detection points to obtain the soil humidity W of each soil detection point of each target line segment ir , the soil acidity index pH ir and the soil relative density ρ ir . At the same time, based on the reference standards for the construction of distribution lines, the appropriate soil humidity W0, the appropriate soil acidity index pH0, and the appropriate soil relative density ρ0, comprehensively calculate the soil texture evaluation index of each target line segment Its calculation expression is: In the formula, ΔW, ΔpH, and Δρ respectively represent the set reference allowable deviation soil humidity, reference allowable deviation soil acidity index, and reference allowable deviation soil relative density. ζ1, ζ2, and ζ3 respectively represent the soil texture influence factors corresponding to the set soil humidity, soil acidity index, and soil relative density. r represents the number of each soil detection point, r = 1, 2, 3,..., h, and h represents the total number of soil detection points.
[0030] It should be noted that in this embodiment, a soil humidity sensor is used to monitor the soil humidity. The analysis of the soil humidity can help evaluate the foundation stability of the power line support structure. Under dry or highly humid soil conditions, the foundation may be affected by erosion, loosening, or settlement. Appropriate soil humidity analysis can ensure the stability of the line support structure, improve line stability, and reduce maintenance costs.
[0031] It should be noted that in this embodiment, a soil analyzer is used to monitor the soil acidity. The soil acidity can pose a corrosion risk to the power line equipment, cables, and underground structures buried underground, and affect the performance of the underground cable insulation materials, thus increasing the risk of cable failures. By analyzing the soil acidity index, the risks brought by the soil acidity can be evaluated, and effective protective measures can be taken or line construction can be avoided under extreme soil conditions to extend the life and reliability of the equipment.
[0032] It should be noted that in this embodiment, a particle density meter is used to monitor the relative density of the soil. The compactness of the soil directly affects the stability of these structures. Soils with low relative density may require deeper foundations, while soils with high relative density can support lighter structures. Understanding the relative density of the soil can help engineers determine the load distribution required for the line support structure and ensure the stability and durability of the support structure.
[0033] It should be noted that in this embodiment, the soil texture evaluation index of each target line segment is calculated, which can then reflect the difficulty and construction cost of line construction with different soil textures, providing a basis for the subsequent evaluation of the construction cost.
[0034] The average daily air pressure Pa of each target line segment is monitored i and the average daily temperature difference between day and night Q i , and based on the suitable air pressure Pa0 and the critical temperature difference between day and night Q0 for the distribution line construction, the construction environment evaluation index of each target line segment is comprehensively calculated Its calculation expression is: In the formula, ΔPa represents the set reference allowable deviation air pressure, and ψ1, ψ2, and ψ3 respectively represent the construction environment impact factors corresponding to the set air pressure, temperature difference between day and night, and altitude.
[0035] It should be noted that in this embodiment, a digital barometer is used to monitor the ambient air pressure. The air pressure can indirectly reflect the weather conditions. High air pressure is usually accompanied by dry weather, which may increase the risk of arc flashovers. Low air pressure is usually accompanied by wet weather and an increase in atmospheric humidity, which may cause the insulators and conductors to be damp, increasing the risk of leakage current and insulation failures. By monitoring the ambient air pressure, it can help optimize the line path and improve the stability of the power system.
[0036] It should be noted that in this embodiment, a temperature sensor is used to monitor the ambient temperature. If the temperature is too high, the sag of the wire will increase, which may cause discharge phenomena and electric shock accidents, and shorten the service life. If the temperature is too low, the icing of the line will increase, further leading to problems such as line overload and short circuit. At the same time, low temperature will increase the resistance of the transmission line, increasing power loss. On the other hand, a large temperature difference will accelerate the aging of the wire, putting higher requirements on the materials of the distribution line. Therefore, monitoring the temperature can help optimize the line path and reduce the construction cost.
[0037] It should be noted that in this embodiment, the construction environment evaluation index of each target line segment is calculated to further evaluate the severity of the construction environment of the distribution line, providing a basis for subsequent line path optimization and construction cost evaluation.
[0038] Furthermore, the construction cost analysis unit also includes calculating the construction cost demand evaluation index of each target line segment, and its calculation expression is: In the formula, represents the construction cost demand evaluation index of each target line segment, e represents the natural constant, and ξ1 and ξ2 respectively represent the construction cost impact factors corresponding to the set soil texture evaluation index and construction environment evaluation index.
[0039] In a specific embodiment, by analyzing the soil texture and environmental severity of the distribution line planning and construction area, it helps engineers determine the stability of the line support structure, helps determine the requirements for the foundation project, reflects the difficulty level of the distribution line construction from the side, further evaluates the distribution line planning and construction cost, and at the same time, the analysis of the construction environment can help optimize the distribution line planning, avoid carrying out construction work in harsh environmental areas, and reduce the construction cost.
[0040] Specifically, the dispatching cost analysis unit is used to analyze the land dispatching and line path planning. The specific analysis process is: statistically calculate the planned land area S occupied by each target line segment i , and obtain the unit area land planning cost of each target line segment according to the location where the planned land is located
[0041] It should be noted that in this embodiment, by analyzing the land value of the line construction area, the cost required for land dispatching is reduced, and at the same time, conflicts with regional land construction are avoided, the land value is retained, providing a basis for subsequent dispatching cost evaluation.
[0042] According to the planned distribution path of each target line segment, calculate the load time series transfer ability between each target line segment corresponding to the planned distribution path, and then obtain the evaluation cost K considering load transfer i, further obtain the required line length L of each target line segment for the construction of the distribution line i , and obtain the material cost ω per unit line length 材料 as well as the distribution loss energy P0 per unit line length and the unit loss energy cost ω 能源 , and at the same time, according to the expected scheduling cost ω of each target line segment 调度 , comprehensively calculate the evaluation index of the scheduling cost demand for each target line segment Evaluate the rationality of the scheduling cost.
[0043] It should be noted that in this embodiment, by analyzing the required line lengths of each target line segment, the required line material cost and loss energy cost are further analyzed, providing a basis for subsequent line path optimization and scheduling cost evaluation.
[0044] Further, the calculation expression for calculating the evaluation index of the scheduling cost demand for each target line segment is:
[0045] In a specific embodiment, by analyzing the land value of the distribution line planning and construction area and the line path planning, it is possible to avoid crossing high-value areas, reduce the cost of land scheduling, and reduce the damage to the land, retaining the land value. At the same time, the line path planning can optimize the line path, reduce the length of the power line and transmission loss, thereby improving the efficiency of the power system. On the other hand, a reasonable line path can improve the maintainability of the power line, contributing to improving the reliability of the power system.
[0046] Specifically, the calculation of the comprehensive cost rationality evaluation index for each target line segment Its calculation expression is: In the formula, and respectively represent the construction cost demand evaluation index and the scheduling cost demand evaluation index for each target line segment, and υ1 and υ2 respectively represent the proportion weights of the set construction cost demand evaluation index and the scheduling cost demand evaluation index.
[0047] The environmental interference expectation analysis module is used to analyze the environmental interference degree of each target line segment and comprehensively calculate the environmental interference rationality evaluation index of each target line segment.
[0048] Specifically, the analysis of the environmental interference degree of each target line segment, the specific analysis process is: obtain the construction mapping area of each target line segment, and further obtain the covered environmental protection area area of each target line segment as well as the covered area of various types of green vegetation within the mapping area of each target line segment According to the critical covered environmental protection area area of the line construction Comprehensively calculate the environmental interference rationality evaluation index of each target line segment Its calculation expression is: In the formula, τt represents the environmental interference rationality evaluation factor per unit coverage area of various types of green vegetation set.
[0049] As a further explanation, in this embodiment, the coverage areas of various types of green vegetation are analyzed. Since different types of vegetation have different degrees of environmental impact, for example, the soil-grabbing ability of the vegetation roots. If the vegetation genus is herbaceous plants, herbaceous plants usually have a shallow root topology structure, with roots mostly slender and dispersed, and mostly concentrated in the upper layer of the soil. Therefore, the root robustness of herbaceous plants is relatively weak. If the vegetation genus is trees, the roots of trees have a branched topology structure of main roots and lateral roots, which can extend deep into the soil and spread over a large range of soil. Therefore, the roots of trees have a significant impact on the soil cohesion.
[0050] In a specific embodiment, by analyzing the area occupied by the distribution line planning in the environmental protection area and the coverage areas of various types of green vegetation, the environmental interference degree of the distribution line construction is evaluated. This helps to reduce the environmental interference of the distribution line construction through reasonable planning, technological innovation, and environmental protection measures, avoid overdevelopment and land damage, achieve the goals of environmental protection and sustainable development, promote the sustainable development of the distribution line, and at the same time improve the planning rationality level of the distribution line.
[0051] The data integration and processing module is used to integrate and process the data and comprehensively evaluate the rationality of the target distribution line planning.
[0052] Specifically, the process of integrating and processing the data and further comprehensively evaluating the rationality of the target distribution line planning is as follows: Comprehensively calculate the overall planning rationality evaluation index δ of the target distribution line, and its calculation expression is: In the formula, and respectively represent the comprehensive cost rationality evaluation index and the environmental interference rationality evaluation index of each target line segment, and respectively represent the proportion weights of the set comprehensive cost rationality evaluation index and the environmental interference rationality evaluation index.
[0053] According to the overall planning rationality evaluation index threshold, compare the overall planning rationality evaluation index of the target distribution line with the overall planning rationality evaluation index threshold. If the overall planning rationality evaluation index of the target distribution line is higher than the overall planning rationality evaluation index threshold, a planning reasonable intelligent prompt is given. Otherwise, the comprehensive cost rationality evaluation index threshold and the environmental interference rationality evaluation index threshold are respectively extracted for comparison.
[0054] Compare the comprehensive cost rationality evaluation index of each target line segment with the comprehensive cost rationality evaluation index threshold. If the comprehensive cost rationality evaluation index of a certain target line segment is lower than the comprehensive cost rationality evaluation index threshold, then mark this target line segment as a line segment with cost requirement optimization, and count the intelligent prompts for cost planning improvement for each line segment with cost requirement optimization.
[0055] Compare the environmental interference rationality evaluation index of each target line segment with the environmental interference rationality evaluation index threshold. If the environmental interference rationality evaluation index of a certain target line segment is lower than the environmental interference rationality evaluation index threshold, then mark this target line segment as a line segment with location requirement optimization, and count the intelligent prompts for location planning improvement for each line segment with location requirement optimization.
[0056] The above content is only an example and explanation of the structure of the present invention. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods for substitution. As long as it does not deviate from the structure of the invention or exceed the scope defined by this claims, it shall fall within the protection scope of the present invention.
Claims
1. An AC / DC distribution network line planning system, characterized in that, Including: A distribution network database for storing the distribution line planning data of the target distribution network; A distribution line statistical analysis module for statistically dividing the target distribution line and analyzing the average altitude of each target line segment therefrom; A comprehensive cost expectation analysis module for analyzing the comprehensive cost of each target line segment, including a construction cost analysis unit and a scheduling cost analysis unit, and comprehensively calculating the comprehensive cost rationality evaluation index of each target line segment; An environmental interference expectation analysis module for analyzing the degree of environmental interference of each target line segment and comprehensively calculating the environmental interference rationality evaluation index of each target line segment: A data integration and processing module for integrating and processing data and comprehensively evaluating the rationality of the target distribution line planning.
2. The AC / DC distribution network line planning system according to claim 1, wherein: The distribution line planning data of the target distribution network includes: the reference standard suitable soil humidity, suitable soil acidity index and suitable soil relative density for distribution line construction, the suitable air pressure and critical day-night temperature difference for distribution line construction, the unit area land planning cost corresponding to each section, the material cost per unit line length, the distribution loss energy per unit line length and the unit loss energy cost, the expected scheduling cost of each target line segment, the mapped area of each target line segment for construction, the critical coverage environmental protection area area for line construction, the comprehensive cost rationality evaluation index threshold, the environmental interference rationality evaluation index threshold, and the overall planning rationality evaluation index threshold.
3. The AC / DC distribution network line planning system according to claim 1, characterized in that: Analyze the average altitude of each target line segment. The specific analysis process is as follows: Divide the distribution lines of the distribution network into segments and label them as each target line segment. At the same time, deploy several altitude detection points on the ground surface of the target line segment to obtain the altitude H of each altitude detection point of each target line segment. ij , according to the numerical expression Calculate the average altitude of each target line segment In the formula, i represents the number of each target line segment, i = 1, 2, 3,..., n, n represents the total number of target line segments, j represents the number of each altitude detection point, j = 1, 2, 3,..., m, and m represents the total number of altitude detection points.
4. The AC / DC distribution network line planning system according to claim 3, wherein: The construction cost analysis unit is used to analyze the planned construction environment, and the specific analysis process is: Deploy several soil detection points to obtain the soil humidity W of each soil detection point on each target line segment ir , soil acidity index pH ir and soil relative density ρ ir . At the same time, based on the reference standards for the construction of distribution lines, the appropriate soil humidity W0, appropriate soil acidity index pH0, and appropriate soil relative density ρ0, comprehensively calculate the soil texture evaluation index of each target line segment Its calculation expression is: In the formula, ΔW, ΔpH, and Δρ respectively represent the set reference allowable deviation of soil humidity, reference allowable deviation of soil acidity index, and reference allowable deviation of soil relative density, ζ1, ζ2, and ζ3 respectively represent the soil texture influence factors corresponding to the set soil humidity, soil acidity index, and soil relative density, r represents the number of each soil detection point, r = 1, 2, 3,..., h, and h represents the total number of soil detection points; The average daily air pressure Pa of each target line segment is measured i and the average daily day-night temperature difference Q i , and based on the suitable air pressure Pa0 and critical day-night temperature difference Q0 for the construction of the distribution line, the construction environment evaluation index of each target line segment is comprehensively calculated Its calculation expression is: In the formula, ΔPa represents the set reference allowable deviation of air pressure, and ψ1, ψ2, and ψ3 respectively represent the construction environment influence factors corresponding to the set air pressure, day-night temperature difference, and altitude.
5. The AC / DC distribution network line planning system according to claim 4, characterized in that: The construction cost analysis unit also includes calculating the construction cost demand evaluation index of each target line segment, and its calculation expression is: wherein, represents the construction cost requirement evaluation index of each target line segment, e represents the natural constant, and ξ1 and ξ2 respectively represent the construction cost impact factors corresponding to the set soil texture evaluation index and construction environment evaluation index.
6. The AC / DC distribution network line planning system according to claim 1, characterized in that: The scheduling cost analysis unit is used to analyze the land scheduling and line path planning, and the specific analysis process is: Statistically calculate the planned land area S occupied by each target line segment i and match the planned land cost per unit area for each target line segment based on the location of the planned land According to the planned power distribution paths of each target line segment, calculate the load time-sequence transfer capabilities between the target line segments corresponding to the planned power distribution paths, and further obtain the evaluation cost K considering load transfer i , further obtain the required line lengths L of each target line segment for the construction of the distribution line i , and obtain the material cost ω per unit line length 材料 as well as the power distribution loss energy P0 per unit line length and the unit loss energy cost ω 能源 , and at the same time, based on the expected scheduling cost ω of each target line segment 调度 , comprehensively calculate the evaluation index of the scheduling cost demand of each target line segment Evaluate the rationality of the scheduling cost 7. The AC / DC distribution network line planning system according to claim 6, wherein: The calculation expression for calculating the scheduling cost demand evaluation index of each target line segment is:
8. The AC / DC distribution network line planning system according to claim 1, characterized in that: Calculating the comprehensive cost rationality evaluation index of each target line segment Its calculation expression is as follows: In the formula, and respectively represent the construction cost demand evaluation index and the scheduling cost demand evaluation index for each target line segment, and υ1 and υ2 respectively represent the proportion weights to which the set construction cost demand evaluation index and the scheduling cost demand evaluation index belong.
9. The AC / DC distribution network line planning system according to claim 1, wherein: The analysis of the degree of environmental interference of each target line segment, the specific analysis process is: Obtain the construction mapping area of each target line segment, and further obtain the coverage environmental protection area of each target line segment And the coverage area of various types of green vegetation within the mapping area of each target line segment Based on the critical coverage environmental protection area of line construction Comprehensively calculate the environmental interference rationality evaluation index of each target line segment Its calculation expression is as follows: In the formula, τt represents the environmental interference rationality evaluation factor per unit coverage area of various types of green vegetation set.
10. A AC / DC distribution network line planning system according to claim 1, characterized in that: The integration and processing of the data, and further comprehensive evaluation of the rationality of the target distribution line planning, the specific analysis process is: Comprehensively calculate the overall planning rationality evaluation index δ of the target distribution line, and its calculation expression is: In the formula, and respectively represent the comprehensive cost rationality evaluation index and the environmental interference rationality evaluation index for each target line segment, and respectively represent the proportion weights to which the set comprehensive cost rationality evaluation index and the environmental interference rationality evaluation index belong; According to the overall planning rationality evaluation index threshold, compare the overall planning rationality evaluation index of the target distribution line with the overall planning rationality evaluation index threshold. If the overall planning rationality evaluation index of the target distribution line is higher than the overall planning rationality evaluation index threshold, perform a reasonable planning intelligent prompt. Otherwise, extract the comprehensive cost rationality evaluation index threshold and the environmental interference rationality evaluation index threshold respectively for comparison; Compare the comprehensive cost rationality evaluation index of each target line segment with the comprehensive cost rationality evaluation index threshold. If the comprehensive cost rationality evaluation index of a certain target line segment is lower than the comprehensive cost rationality evaluation index threshold, mark this target line segment as a line segment with cost requirement optimization, and count the cost planning improvement intelligent prompts for each line segment with cost requirement optimization; Compare the environmental interference rationality evaluation index of each target line segment with the environmental interference rationality evaluation index threshold. If the environmental interference rationality evaluation index of a certain target line segment is lower than the environmental interference rationality evaluation index threshold, mark this target line segment as a line segment with location requirement optimization, and count the location planning improvement intelligent prompts for each line segment with location requirement optimization.