Regional power grid layout planning system, storage medium and computer equipment

Abstract

The invention discloses a regional power grid layout planning system, a storage medium and computer equipment wherein the regional power grid layout planning system is realized based on a three-dimensional geographic information model and a territorial space information model. Comprising a transformer substation site selection planning plate used for selecting a site meeting given conditions, technical rules and policies and regulations in a given area, and a power transmission line path planning plate used for planning a reasonable path scheme according to a line rule on the basis of a given line starting point and a given line ending point in a planning area. And the regional power grid layout planning system platform plate is used for solving the problems that planning data models and attributes formed in each specialty and each technical process in the spatial layout service of the electric power facilities in the regional power grid are not uniform, data is distorted and results are difficult to share. Through regional power grid layout optimization technology research, effective landing of power planning can be guaranteed, uncertain factors of engineering construction are reduced, construction coordination difficulty is reduced, and source-grid-load-storage coordination development is promoted.

Description

Technical Field

[0001] The present invention relates to the technical field of regional power grid layout planning, and in particular to a regional power grid layout planning system, a storage medium and a computer device. Background Art

[0002] Regional grid layout planning is a crucial area in the design and operation of power systems, and is one of the most basic links in grid construction and operation. The modern economic society has increased the amount of power transmission and transmission distance of power systems, and the complexity and scale of power grids have gradually increased. In addition, the coordination and balance between grid safety, stability, economy and environment have put forward higher requirements for power system planning and decision-making. Therefore, how to carry out effective regional grid layout planning has become a hot topic of current research.

[0003] However, in the face of new requirements for national land space planning and regional power grid layout planning under the new situation, in the existing technology, the traditional power grid layout planning work still uses the original process flow, only focusing on the rationality of the system grid, lacking the implementation planning of the specific layout location, and has the following specific defects:

[0004] The acquisition cycle of substation location and area information, and land use information of transmission line corridors is long and time-sensitive, and the substation site is blind and unscientific;

[0005] Transmission line path planning relies too much on the personal experience of line selectors and cannot adapt to the technical requirements in the new environment. Summary of the invention

[0006] The present invention provides a regional power grid layout planning system, storage medium and computer equipment that can ensure the effective implementation of power planning, reduce uncertainties in engineering construction, and reduce the difficulty of construction coordination, and can solve at least one of the above-mentioned technical problems.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A regional power grid layout planning system is implemented based on a three-dimensional geographic information model and a national land space information model, including:

[0009] The substation site selection and planning module is used to select a site that meets given conditions, technical rules, policies and regulations in a given area, including an AHP hierarchical analysis algorithm module, which is used to integrate key business links in the site selection process into each level of the algorithm, including a weight factor model construction unit, an environmental data analysis unit, a site analysis and planning unit, and a planning results optimization and evaluation unit;

[0010] The transmission line path planning module is used to plan a reasonable path plan based on the given line start and end points in the planning area according to the line rules, including an A* algorithm model module, which is used to comprehensively consider the actual cost and estimated cost of the path, use the estimated optimal path cost to guide the search direction, and output a reasonable line planning plan by continuously moving the line start and end points forward and iterating;

[0011] The regional power grid layout planning system platform module is used to solve the problems of inconsistent planning data models and attributes, data distortion and difficulty in sharing results formed in various professional and technical processes in the spatial layout of power facilities in the regional power grid. It includes a power grid spatial layout planning system module and a digital map display platform module.

[0012] Furthermore, the key business links of the substation site selection planning section in the site selection process at least include data statistics, spatial analysis and result screening.

[0013] Furthermore, the weight factor model construction unit, the environmental data analysis unit, the site analysis planning unit and the planning result optimization evaluation unit are sequentially connected, and data signals are transmitted mutually among the four units;

[0014] The weight factor model building unit is used to quantify and classify the influence of land areas with different land properties on substation planning;

[0015] The environmental data analysis unit is used to analyze whether the range covered by the data can be occupied, crossed, covered or demolished during the substation planning process according to the hierarchy to which each environmental data weight factor belongs in the national land space information model, so as to create necessary conditions for site analysis and planning;

[0016] The site analysis and planning unit is used to select the optimal site according to regional topography and surrounding environmental factors;

[0017] The planning results optimization evaluation unit is used to describe the advantages and disadvantages of the substation site based on five indicators: terrain information, earthwork analysis, crossing statistics, land acquisition statistics and traffic conditions.

[0018] Furthermore, the line rules on which the transmission line path planning section is based are completed by loading a feature rule library and manually marking features, and the line nodes analyze and avoid features according to the line rules, so that the line nodes can select a reasonable direction of advance while gradually approaching the line end, and the line turning angle and the total length of the line need to be within a reasonable range of the planning standards.

[0019] Furthermore, the A* algorithm model module maintains two values, g(n) and h(n), wherein g(n) is the actual cost from the starting point of the route to the temporary target point n, including the distance cost and the estimated economic cost of the investment under the influence of different terrain factors; h(n) is the estimated cost from the temporary target point n to the end point of the route, also including the distance cost and the estimated economic cost of the investment under the influence of different terrain factors; the evaluation function of the A* algorithm model module is f(n), and f(n) is the estimated total cost from the starting point of the route to the target end point.

[0020] Furthermore, in the process of guiding the search direction, the A* algorithm model module uses the A* algorithm to evaluate the priority of each node by introducing a heuristic function, wherein the heuristic function estimates the shortest distance from the current node to the target node and selects the node expansion with the minimum f value of the f(n).

[0021] Furthermore, the power grid space layout planning system module consists of a C / S architecture, and at least includes a project achievement library, a production project library, a public resource library, a site selection and line selection unit, a national land space symbol library, a national land planning rule unit, a spatial model planning unit, a layout planning unit, a map management application unit, a user management unit and a system configuration unit.

[0022] Furthermore, the digital map display platform module is composed of a B / S architecture, serving as an auxiliary display terminal of the regional power grid layout planning system platform section, and at least includes an achievement project information data display unit, a new energy project three-dimensional display unit, and a public resource information data display unit.

[0023] A computer-readable storage medium stores a computer program, which, when executed by a processor, enables the processor to implement the steps executed by the system.

[0024] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor implements the steps executed by the system.

[0025] The beneficial effects of the present invention are embodied in:

[0026] The present invention takes the grid planning requirements, three-dimensional geographic information model, and national space information model as the object, combines the geographic information system (GIS) technology and the ground-air remote sensing (RS) technology to conduct process-based, intelligent analysis and processing research on different types of grid projects such as grid substations and transmission lines, and establishes a set of intelligent regional grid layout planning systems for grid projects. In order to achieve the reliability of layout planning, this system provides reliable power supply with reasonably planned substations and transmission lines to ensure that the continuous electricity demand of the public and industrial users is met. Through the research on regional grid layout optimization technology, it can ensure the effective implementation of power planning, reduce the uncertainty of engineering construction, reduce the difficulty of construction coordination, and promote the coordinated development of source, network, load and storage, and at the same time has a great promoting effect on the development of the grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0028] Figure 1 It is an overall structural block diagram of the regional power grid layout planning system according to an embodiment of the present invention.

[0029] Figure 2 It is an overall structural block diagram of the regional power grid layout planning system according to an embodiment of the present invention.

[0030] Figure 3 It is a schematic diagram of the substation site selection planning process according to an embodiment of the present invention.

[0031] Figure 4 It is a structural block diagram of a computer device according to an embodiment of the present invention.

[0032] The components in the attached figure are marked as follows: 1. Substation site selection and planning section; 2. Transmission line path planning section; 3. Regional power grid layout planning system platform section; 4. AHP hierarchical analysis algorithm module; 5. Weight factor model construction unit; 6. Environmental data analysis unit; 7. Site analysis and planning unit; 8. Planning results optimization and evaluation unit; 9. A* algorithm model module; 10. Power grid space layout planning system module; 11. Digital map display platform module. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] It should be noted that the meaning of “and / or” appearing in the full text includes three parallel solutions. Taking “A and / or B” as an example, it includes Solution A, Solution B, or a solution in which both A and B are satisfied.

[0035] See also Figure 1 The embodiment of the present invention provides a regional power grid layout planning system, which is implemented based on a three-dimensional geographic information model and a national land space information model, and includes:

[0036] The substation site selection and planning module 1 is used to select a site that meets given conditions, technical rules, policies and regulations in a given area, including an AHP hierarchical analysis algorithm module 4, which is used to integrate key business links in the site selection process into each level of the algorithm, including a weight factor model construction unit 5, an environmental data analysis unit 6, a site analysis and planning unit 7, and a planning results optimization evaluation unit 8;

[0037] The transmission line path planning module 2 is used to plan a reasonable path plan based on the given line start and end points in the planning area according to the line rules, including an A* algorithm model module 9, which is used to comprehensively consider the actual cost and estimated cost of the path, use the estimated optimal path cost to guide the search direction, and output a reasonable line planning plan after continuously moving the line start and end points forward and iterating;

[0038] The regional power grid layout planning system platform module 3 is used to solve the problems of inconsistent planning data models and attributes, data distortion and difficulty in sharing results formed in various professional and technical processes in the spatial layout of power facilities in the regional power grid, and includes a power grid spatial layout planning system module 10 and a digital map display platform module 11.

[0039] The regional power grid spatial layout planning technology of this system based on three-dimensional geographic information and national space information model is based on massive geographic information spatial data, and customized layout is carried out according to the process requirements of regional power grid layout intelligence, meeting the "one network" operation requirements of national space planning, and playing a positive role in supporting the rapid development of urbanization and promoting the rational use and effective protection of national space. The regional power grid layout optimization technology research of this system can ensure the effective implementation of power planning, reduce the uncertainty of engineering construction, reduce the difficulty of construction coordination, and promote the coordinated development of source, network, load and storage, and at the same time has a great promoting effect on the development of power grid.

[0040] See also Figure 1 In this embodiment, the key business links of the substation site selection planning module 1 in the site selection process at least include data statistics, space analysis and result screening.

[0041] See also Figure 1 In this embodiment, the weight factor model building unit 5, the environmental data analysis unit 6, the site analysis and planning unit 7 and the planning result optimization and evaluation unit 8 are sequentially connected, and data signals are transmitted mutually among the four;

[0042] The weight factor model building unit 5 is used to quantify and classify the influence of land areas with different land properties on substation planning;

[0043] The environmental data analysis unit 6 is used to analyze whether the range covered by the data can be occupied, crossed, covered or demolished during the substation planning process according to the hierarchy of each environmental data weight factor in the national land space information model, so as to create necessary conditions for site analysis and planning;

[0044] The site analysis and planning unit 7 is used to select the optimal site according to regional topography and surrounding environmental factors;

[0045] The planning result optimization evaluation unit 8 is used to describe the advantages and disadvantages of the substation site according to five indicators: terrain information, earthwork analysis, crossing statistics, land acquisition statistics and traffic conditions.

[0046] See also Figure 1 In this embodiment, the line rules based on the transmission line path planning section 2 are completed by loading the terrain rule library and manually marking the terrain. The line nodes analyze and avoid the terrain according to the line rules, so that the line nodes can select a reasonable forward direction while gradually approaching the line end point, and the line turning angle and the total length of the line need to be within a reasonable range of the planning standard.

[0047] See also Figure 1In this embodiment, the A* algorithm model module 9 maintains two values, g(n) and h(n), wherein g(n) is the actual cost from the starting point of the route to the temporary target point n, including the distance cost and the estimated economic cost of the investment under the influence of different terrain factors; h(n) is the estimated cost from the temporary target point n to the end point of the route, also including the distance cost and the estimated economic cost of the investment under the influence of different terrain factors; the evaluation function of the A* algorithm model module 9 is f(n), and f(n) is the estimated total cost from the starting point of the route to the target end point.

[0048] See also Figure 1 In this embodiment, the A* algorithm model module 9 uses the A* algorithm to evaluate the priority of each node by introducing a heuristic function in the process of guiding the search direction. The heuristic function estimates the shortest distance from the current node to the target node and selects the minimum f value of the f(n) for node expansion.

[0049] In this application, the path planning of the transmission line is based on the determination of the starting and ending points of the initial line and the design and configuration of the layout planning rule library, assisted by the terrain mapping data of the alternative area, and then the A* algorithm is used to grid the alternative area according to a fixed step size, and in this process, spatial analysis operations are performed and the terrain mapping data is avoided at a safe distance. Secondly, a greedy strategy is used to iteratively track according to the end point of the line, so as to converge and screen the alternative results, and finally determine the optimal line plan and load and save it visually.

[0050] Furthermore, in this embodiment, the transmission line path planning module 2 adopts the hierarchical analysis method based on the various types of land planning resource data and line starting and ending point information that have been loaded, superimposes the weights of the land feature mapping data, and plans multiple path information that conforms to the established rules. On the basis of this result, each turning point of the optimal line is polled, and a secondary analysis is performed to calculate the economic cost under different circumstances. Finally, the analysis forms the path results under the dual indicators of rule-based + economical.

[0051] Specifically, the path planning implementation method is as follows:

[0052] S1: Set economic planning indicators, such as how many square meters of forest land can be cut down to allow the planning scheme to be retained, how many square meters of house demolition area can be demolished to allow the planning scheme to be retained, etc., and use these indicators as economic analysis standards;

[0053] S2: Since each corner point in the existing planning scheme is mostly for avoiding land features, the polling analysis starts from the second corner point;

[0054] S3: After removing the currently polled corner point, calculate whether there is any intersecting feature in the line formed by the two points before and after;

[0055] S4: After obtaining the attributes of the land features, according to their attribute types, if they belong to the economic indicator category (such as forest land, residential area, etc.), the standardized felling and demolition areas are calculated according to the voltage level;

[0056] S5: After obtaining the felled or demolished area, assign economic unit prices to the plot attributes and calculate the standardized route passing cost;

[0057] S6: adding the passing cost in S5 to the standard cost of the line can obtain the complete standardized cost of the tension section;

[0058] S7: By comparing the cost with the standard cost of the line before removing the current corner point, the economic cost of avoiding this plot and not avoiding this plot can be analyzed for the designer to analyze and judge;

[0059] S8: Based on each corner point after polling from S2 to S7, an economic comparison result of all tension sections with and without avoidance can be obtained. After selection by the designer, a line path that meets the economic indicators is finally obtained.

[0060] See also Figure 1 In this embodiment, the power grid space layout planning system module 10 is composed of a C / S architecture, and at least includes a project achievement library, a production project library, a public resource library, a site selection and line selection unit, a national land space symbol library, a national land planning rule unit, a spatial model planning unit, a layout planning unit, a map management application unit, a user management unit and a system configuration unit.

[0061] See also Figure 1 In this embodiment, the digital map display platform module 11 is composed of a B / S architecture and serves as an auxiliary display terminal of the regional power grid layout planning system platform module 3, and at least includes an achievement project information data display unit, a new energy project three-dimensional display unit, and a public resource information data display unit.

[0062] An embodiment of the present invention further provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the processor implements the steps executed by the above system.

[0063] See also Figure 2 An embodiment of the present invention further provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor implements the steps executed by the above system.

[0064] The embodiment of the present invention also provides a computer program product including instructions, which, when executed on a computer, enables the computer to implement the steps executed by the above system.

[0065] It should be noted that those skilled in the art can understand that all or part of the steps implemented in the embodiments of the present invention can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using hardware, it can be implemented in whole or in part in the form of purchasing standard parts or modified parts. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)).

[0066] In summary, in order to solve the problems of long information acquisition cycle and weak timeliness in traditional layout planning operation mode, and over-reliance on personal experience of line selection personnel, the present invention takes power grid planning needs, three-dimensional geographic information models, and national land space information models as objects, combines geographic information system (GIS) technology with ground-to-air remote sensing (RS) technology to conduct process-based and intelligent analysis and processing research on different types of power grid projects such as power substations and transmission lines, and establishes a set of intelligent regional power grid layout planning system for power grid projects.

[0067] At the same time, in order to achieve the reliability of layout planning, this system can provide reliable power supply with reasonably planned substations and transmission lines to ensure that the continuous power demand of the public and industrial users is met. Through the research on regional power grid layout optimization technology, it can ensure the effective implementation of power planning, reduce the uncertainty of engineering construction, reduce the difficulty of construction coordination, and promote the coordinated development of source, grid, load and storage, which will also have a great promoting effect on the development of power grid.

[0068] It should be understood that the examples and implementation modes described herein are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art may make various modifications or changes based on the examples and implementation modes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A regional power grid layout planning system, characterized in that: It is implemented based on the 3D geographic information model and the national land space information model, including: A substation site selection and planning module (1) is used to select a site that meets given conditions, technical rules and policies and regulations in a given area, including an AHP hierarchical analysis algorithm module (4), wherein the AHP hierarchical analysis algorithm module (4) is used to integrate key business links in the site selection process into each level of the algorithm, including a weight factor model construction unit (5), an environmental data analysis unit (6), a site analysis and planning unit (7) and a planning results optimization and evaluation unit (8); The transmission line path planning module (2) is used to plan a reasonable path plan in the planning area based on the given line start and end points according to the line rules, including an A* algorithm model module (9), wherein the A* algorithm model module (9) is used to comprehensively consider the actual cost and estimated cost of the path, use the estimated optimal path cost to guide the search direction, and output a reasonable line planning plan after continuously moving the line start and end points forward and iterating; The regional power grid layout planning system platform module (3) is used to solve the problems of inconsistent planning data models and attributes, data distortion and difficulty in sharing results formed in various professional and technical processes in the spatial layout of power facilities in the regional power grid, and includes a power grid spatial layout planning system module (10) and a digital map display platform module (11).

2. The regional power grid layout planning system according to claim 1, characterized in that: The key business links of the substation site selection planning section (1) in the site selection process at least include a data statistics link, a space analysis link and a result screening link.

3. The regional power grid layout planning system according to claim 1, characterized in that: The weight factor model building unit (5), the environmental data analysis unit (6), the site analysis planning unit (7) and the planning result optimization evaluation unit (8) are connected in sequence, and data signals are transmitted mutually between the four units; The weight factor model building unit (5) is used to quantify and classify the influence of land areas with different land properties on substation planning; The environmental data analysis unit (6) is used to analyze, according to the hierarchy to which each environmental data weight factor belongs in the national land space information model, whether the range covered by the data can be occupied, crossed, covered or demolished during the substation planning process, so as to create necessary conditions for site analysis and planning; The site analysis and planning unit (7) is used to select the optimal site according to regional topography and surrounding environmental factors; The planning result optimization evaluation unit (8) is used to describe the advantages and disadvantages of the substation site according to five indicators: terrain information, earthwork analysis, crossing statistics, land acquisition statistics and traffic conditions.

4. The regional power grid layout planning system according to claim 1, characterized in that: The line rules based on which the transmission line path planning module (2) is based are completed by loading a terrain rule library and manually marking terrain. The line nodes analyze and avoid terrain according to the line rules, so that the line nodes can select a reasonable forward direction while gradually approaching the line end point, and the line turning angle and the total length of the line need to be within a reasonable range of the planning standard.

5. The regional power grid layout planning system according to claim 1, characterized in that: The A* algorithm model module (9) maintains two values, g(n) and h(n), wherein g(n) is the actual cost from the starting point of the route to the temporary target point n, including the distance cost and the estimated economic cost of the investment under the influence of different terrain factors; h(n) is the estimated cost from the temporary target point n to the end point of the route, also including the distance cost and the estimated economic cost of the investment under the influence of different terrain factors; the evaluation function of the A* algorithm model module (9) is f(n), and f(n) is the estimated total cost from the starting point of the route to the target end point.

6. The regional power grid layout planning system according to claim 1, characterized in that: In the process of guiding the search direction, the A* algorithm model module (9) uses the A* algorithm to evaluate the priority of each node by introducing a heuristic function, wherein the heuristic function estimates the shortest distance from the current node to the target node and selects the node expansion with the minimum f value of the f(n).

7. The regional power grid layout planning system according to claim 1, characterized in that: The power grid space layout planning system module (10) has a C / S architecture and at least includes a project achievement library, a production project library, a public resource library, a site selection and line selection unit, a national land space symbol library, a national land planning rule unit, a space model planning unit, a layout planning unit, a map management application unit, a user management unit and a system configuration unit.

8. The regional power grid layout planning system according to claim 1, characterized in that: The digital map display platform module (11) has a B / S architecture and serves as an auxiliary display terminal of the regional power grid layout planning system platform module (3), and at least includes an achievement project information data display unit, a new energy project three-dimensional display unit and a public resource information data display unit.

9. A computer-readable storage medium, characterized in that: A computer program is stored, and when the computer program is executed by a processor, the processor implements the steps performed by the system as claimed in any one of claims 1 to 8.

10. A computer device, characterized in that: The system comprises a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor implements the steps executed by the system as claimed in any one of claims 1 to 8.

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