Method and device for arranging field flat position of switching station

Abstract

The invention discloses an arrangement method and device for a field flat position of a switching station. The arrangement method comprises the following steps: S1, determining a first range according to a circular truncated cone; s2, determining a plurality of contour lines in the first range, and determining a first point location on each contour line; s3, determining a first arrangement scheme according to the first point location; s4, determining a second range according to the score of the first arrangement scheme; s5, determining contour lines included in each second range; determining a plane strip area according to the contour line; s6, determining a second point location according to the plane strip area; s7, determining a second arrangement scheme according to the second point location; and S8, screening out a second arrangement scheme with the lowest score from each second range to obtain a plurality of recommended arrangement schemes. Due to the adoption of the technical scheme, compared with the prior art, the problems of blindness and low efficiency in a traditional design method are effectively solved, and the quality of an arrangement scheme is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of hydropower engineering, and particularly relates to a layout method and device for the flat position of a switchyard. Background Art

[0002] During the design process of a pumped-storage power station powerhouse, the layout of the switchyard is a complex and crucial design task. The traditional design methods have the following problems: the selection process is often blind and time-consuming, and the quality of the design results cannot be guaranteed. Therefore, it is necessary to develop a layout method and device for the flat position of the switchyard to optimize the flat position layout of the switchyard and improve the design efficiency and the quality of the plan. Summary of the Invention

[0003] The present invention provides a layout method and device for the flat position of a switchyard to solve the technical problems that the selection process of the existing switchyard layout method is blind and time-consuming, and the quality of the layout plan cannot be guaranteed.

[0004] To achieve the above object, the present invention adopts the following technical solutions.

[0005] On the one hand, a layout method for the flat position of a switchyard is provided, including the following steps:

[0006] S1. Construct a frustum of a cone, and determine the first range as the intersection line of the frustum of the cone and the ground line of the flat area of the switchyard to be arranged;

[0007] S2. Determine multiple contour lines within the first range, and determine multiple first point positions with the same interval on each contour line; S3. For each first point position, place one corner point of the switchyard rectangle, and make the other long side corner point fall on the contour line where the first point position is located, to obtain multiple first layout plans; the length and width of the switchyard rectangle are used to represent the planar length and width dimensions of the switchyard flat;

[0008] S4. Calculate the score of each first layout plan, screen out several first layout plans with lower scores, and determine the circular second range with the center point of the selected first layout plan as the center;

[0009] The calculation method of the score includes: score = (0.006 × slope excavation volume + slope coefficient × 0.08 × slope excavation surface area) + (8 × shaft height + 3 × adit length + 1.3 × road connection distance) + 2 × outgoing line length × number of outgoing line loops;

[0010] S5. Determine the contour lines included in each second range; for each contour line, respectively offset half of the length and half of the width of the switchyard rectangle into the terrain, and determine the area between the two offset contour lines as the planar strip area;

[0011] S6. Divide each planar strip area into strips of equal width from the outside of the terrain inward. Take several points at intervals of the strip width on each strip, divide the strip into grids, and use each grid intersection point as the second point position;

[0012] S7. For each second point position, place switch station rectangles at different angles centered on the second point position to obtain multiple second layout schemes;

[0013] S8. Calculate the score of each second layout scheme, and select the second layout scheme with the lowest score from each second range to obtain several recommended layout schemes.

[0014] In some embodiments, when calculating the score,

[0015] If the slope of the straight line connecting the point position and the factory building outgoing line point is greater than or equal to 10%, the outgoing line length is the estimated amount of the horizontal tunnel length plus the estimated amount of the shaft height; wherein, the estimated amount of the horizontal tunnel length is the horizontal straight-line distance between the point position and the factory building outgoing line point, and the estimated amount of the shaft height is the vertical height difference between the point position and the factory building outgoing line point;

[0016] If the slope of the straight line connecting the point position and the factory building outgoing line point is less than 10%, the outgoing line length is the estimated amount of the horizontal tunnel length.

[0017] In some embodiments,

[0018] When X < 30m, the value of the slope coefficient is 1;

[0019] When 30 ≤ X < 60m, the value of the slope coefficient is 1.2;

[0020] When 60 ≤ X < 100m, the value of the slope coefficient is 1.5;

[0021] When X ≥ 100m, the value of the slope coefficient is 2;

[0022] X is the slope height.

[0023] In some embodiments, between steps S3 and S4, when any first layout scheme meets any of the following conditions, it is excluded:

[0024] The remaining area of the switch station rectangle except for the range within the first set distance from the side close to the contour line is above the terrain surface;

[0025] There is a planar intersection between the outer contour line of the site leveling and the ranges within the second set distance on both sides of the ecological red line, farmland, and road center line; there is an intersection with the ground within the third set distance in the incoming direction of the switch station cable horizontal tunnel;

[0026] The number of excavation levels of the site leveling slope exceeds the maximum excavation level set by the user;

[0027] The opening line of the slope intersects with the ecological red line, farmland, and the areas on both sides of the center line of the road.

[0028] In another aspect, a device for arranging the flat position of a switchyard is provided, including a memory, a processor, and a computer program stored on the memory. The processor executes the computer program to implement the steps of the above method.

[0029] In another aspect, a computer-readable storage medium is provided, on which a computer program / instructions are stored. When the computer program / instructions are executed by a processor, the steps of the above method are implemented.

[0030] In another aspect, a computer program product is provided, including a computer program / instructions. When the computer program / instructions are executed by a processor, the steps of the above method are implemented.

[0031] The present invention has at least the following technical effects or advantages: effectively solving the blindness and low efficiency problems in the traditional design method and ensuring the quality of the layout scheme. Description of the Drawings

[0032] Figure 1 It is a schematic diagram of the physical cut of the frustum of a cone in an embodiment of the present invention;

[0033] Figure 2 It is a schematic diagram of the first range in an embodiment of the present invention;

[0034] Figure 3 It is a schematic diagram of the first layout scheme in an embodiment of the present invention;

[0035] Figure 4 It is a schematic diagram of the second range in an embodiment of the present invention;

[0036] Figure 5 It is a schematic diagram of the planar strip area in an embodiment of the present invention;

[0037] Figure 6 It is a schematic diagram of the second point position in an embodiment of the present invention;

[0038] Figure 7 It is a schematic diagram of the second layout scheme in an embodiment of the present invention;

[0039] Figure 8 It is a schematic diagram of the remaining area of the rectangle of the switchyard except for the first set distance range near the contour line in an embodiment of the present invention. Detailed Embodiments

[0040] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0041] Embodiment 1

[0042] Taking the layout of the switchyard flat position in the powerhouse of a pumped-storage power station as an example, after obtaining the three-dimensional terrain and the position of the main powerhouse, a general size scheme for the switchyard is determined. Each general size scheme includes the planar length and width dimensions of the switchyard flat, the cable inlet point, and the direction of the cable entering the switchyard. In the present invention, the selected general size scheme will be abstracted into a rectangle to simulate the size of the outer contour of the switchyard flat.

[0043] S1. Construct a frustum of a cone, and determine the first range as the intersection line of the frustum of the cone and the ground line of the area where the switchyard flat to be arranged is located.

[0044] Specifically, for the first-level range screening, it is necessary to set the limit outlet distance of the cable tunnel from the main powerhouse to the switchyard. The optional range of the switchyard is defined as a frustum of a cone. In the three-dimensional view, the range within the limit outlet distance can be defined as a frustum of a cone. The switchyard outlet distance is composed of the height of the cable shaft plus the length of the cable horizontal tunnel. When the switchyard and the main powerhouse are at the same elevation, the height of the shaft is 0, and the planar range of the switchyard is the circular range at the bottom of the frustum of the cone, and the range radius, that is, the length of the cable horizontal tunnel, is equal to the limit outlet distance; when the height of the shaft is the upper limit value of the cable shaft height. The planar range of the switchyard is the circular range at the top of the frustum of the cone, and the radius (the length of the cable horizontal tunnel) is the difference between the limit outlet distance and the upper limit value of the cable shaft. Under this boundary condition, any position within the three-dimensional frustum of the cone satisfies that the length of the cable tunnel from the main powerhouse to the switchyard is within the limit outlet distance. The intersection line of the three-dimensional frustum of the cone and the terrain surface is defined as the maximum range line for the switchyard layout, that is, the first range. Any position within this range satisfies the cable tunnel length requirement, as Figure 1 and Figure 2 shown.

[0045] S2. Determine multiple contour lines within the first range, and determine multiple first points with the same interval on each contour line. Specifically, based on the contour lines within the first-level range, starting from the lowest elevation to the highest elevation, select the contour lines at an elevation interval of 1 meter. Then, form a point every 20 meters along the contour line starting from the starting point, and traverse each contour line one by one.

[0046] S3. For each first point, place a corner point of the switchyard rectangle, and make the other long-side corner point fall on the contour line where the first point is located, to obtain multiple first layout schemes; the length and width of the switchyard rectangle are used to represent the planar length and width dimensions of the switchyard flat. Specifically, place a corner point of the outer contour of the switchyard rectangle at the traversed point, and ensure that the other long-side corner point falls on the current contour line, to form multiple selectable switchyard rectangles containing position and direction information, as Figure 3 shown.

[0047] S4. Calculate the scores of each first layout plan, and screen out several first layout plans with lower scores. Determine a circular second range with the center point of the selected first layout plan as the center. The calculation method of the score includes: Score = (0.006 × slope excavation volume + slope coefficient × 0.08 × slope excavation surface area) + (8 × shaft height + 3 × adit length + 1.3 × road connection distance) + 2 × outgoing line length × number of outgoing line circuits. In this embodiment, with the center points of the switchyards of the top ten optimal plans (the ten with lower scores) as the centers, form 5 - 10 circular areas with a diameter of 50 meters as the second range, as Figure 4 shown. If there is an overlapping range in the selected circular areas, eliminate the plans with less advantageous scores and automatically substitute them in order of ranking to ensure that multiple areas can be selected within the first range.

[0048] It should be noted that when calculating the score,

[0049] If the slope of the straight line connecting the point and the outgoing line point of the plant is greater than or equal to 10%, the outgoing line length is the estimated amount of the adit length plus the estimated amount of the shaft height; where the estimated amount of the adit length is the horizontal straight-line distance between the point and the outgoing line point of the plant, and the estimated amount of the shaft height is the vertical height difference between the point and the outgoing line point of the plant;

[0050] If the slope of the straight line connecting the point and the outgoing line point of the plant is less than 10%, the outgoing line length is the estimated amount of the adit length.

[0051] The road connection distance is the length of the shortest route from the nearest point on the contour line of the current platform elevation to the road at a slope ratio of 5%.

[0052] The slope coefficient is taken according to the following slope height classification table:

[0053] Slope height ＜30m 30m - 60m 60m - 100m ≥100m Slope coefficient 1.0 1.2 1.5 2.0

[0054] S5. Determine the contour lines included in each second range; for each contour line, offset half of the length and half of the width of the switchyard rectangle into the terrain respectively, and determine the area between the two offset contour lines as the planar strip area, as Figure 5 shown.

[0055] S6. Divide each planar strip area into strips with equal widths from the outside to the inside of the terrain. Take several points at intervals of the strip width on each strip to divide the strip into grids, and use each grid intersection point as the second point, as Figure 6 shown. In this embodiment, the strip width is 5m.

[0056] S7. For each second point position, place switch station rectangles at different angles centered on the second point position to obtain multiple second layout schemes. Specifically, with each second point position as the center and the incoming line direction of the switch station scheme as the due north direction, a switch station rectangle corresponding to the general scheme is formed. The switch station rectangle generated by rotating the incoming line direction clockwise by 5° each time is used as a layout scheme for calculation. Calculating the different orientations for a single point can find the most suitable site leveling placement direction at the current point. As Figure 7 shown. Select the site leveling placement method with the lowest score within each circular screening range.

[0057] S8. Calculate the score of each second layout scheme, and select the second layout scheme with the lowest score from each second range to obtain several recommended layout schemes. Finally, a total of 10 switch station site leveling layout schemes with the lowest scores are calculated as the recommended alternative schemes.

[0058] As a preferred scheme, before calculating the score of the first layout scheme, a feasibility check should be carried out on the site leveling placement position, and the schemes that do not pass the check will not be evaluated subsequently. The check should follow the following principles:

[0059] 1. In the check of the second-round screening, except for the area within 5 m of the side close to the contour line, the remaining area of the switch station rectangle should not be above the terrain surface, as Figure 8 shown.

[0060] 2. There should be no planar intersection between the outer contour line of the site leveling and the ecological red line, farmland, and the area within 4 m on both sides of the road center line.

[0061] 3. Within 100 m of the incoming direction of the switch station cable flat tunnel, it should be completely below the ground. If there is a ground intersection, it is determined as a failed scheme.

[0062] 4. The excavation level of the site leveling slope does not exceed the maximum excavation level set by the user. The opening line of the slope shall not intersect with the ecological red line, farmland, and the area on both sides of the road center line, and must be within the first range.

[0063] In the specification provided here, a large number of specific details are described. However, it can be understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0064] Similarly, it should be understood that, for the purpose of streamlining the present disclosure and assisting in understanding one or more of the various inventive aspects, in the foregoing description of the exemplary embodiments of the present invention, the various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, the disclosed method should not be construed as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected by the claims, the inventive aspects lie in less than all the features of the single foregoing disclosed embodiment. Thus, the claims following the detailed description hereby expressly incorporate the detailed description, where each claim itself serves as a separate embodiment of the present invention.

[0065] Those skilled in the art should understand that the modules or units or groups of the devices in the examples disclosed herein may be arranged in the devices as described in this embodiment, or alternatively may be located in one or more devices different from the devices in this example. The modules in the foregoing examples may be combined into one module or further divided into multiple sub-modules.

[0066] Those skilled in the art can understand that the modules in the devices of the embodiments can be adaptively changed and arranged in one or more devices different from this embodiment. The modules or units or groups in the embodiments can be combined into one module or unit or group, and furthermore can be divided into multiple sub-modules or sub-units or sub-groups. Except that at least some of such features and / or processes or units are mutually exclusive, any combination can be adopted to combine all the features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all the processes or units of any method or device so disclosed. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) can be replaced by an alternative feature that provides the same, equivalent, or similar purpose.

[0067] In addition, those skilled in the art can understand that although some of the embodiments described herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present invention and forms different embodiments.

[0068] In addition, some of the embodiments described herein are described as a combination of methods or method elements that can be implemented by a processor of a computer system or by other devices performing the functions. Therefore, a processor having the necessary instructions for implementing the method or method elements forms a device for implementing the method or method elements. In addition, the elements described herein in the device embodiments are examples of the following devices: the device is used to implement the functions performed by the elements for the purpose of implementing the present invention.

[0069] The various techniques described herein can be implemented in hardware or software, or a combination thereof. Thus, the methods and apparatuses of the present invention, or certain aspects or portions of the methods and apparatuses of the present invention, may take the form of program code (i.e., instructions) embedded in a tangible medium, such as a floppy disk, a CD-ROM, a hard disk drive, or any other machine-readable storage medium, where when the program is loaded into and executed by a machine such as a computer, the machine becomes an apparatus for practicing the present invention.

[0070] In the case where the program code is executed on a programmable computer, the computing device generally includes a processor, a processor-readable storage medium (including volatile and non-volatile memory and / or storage elements), at least one input device, and at least one output device. Among them, the memory is configured to store the program code; the processor is configured to execute the method of the present invention according to the instructions in the program code stored in the memory.

[0071] By way of example and not limitation, computer-readable media include computer storage media and communication media. Computer-readable media include computer storage media and communication media. Computer storage media stores information such as computer-readable instructions, data structures, program modules, or other data. Communication media generally embodies computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and includes any information delivery medium. Combinations of any of the above are also included within the scope of computer-readable media.

[0072] As used herein, unless otherwise specified, the use of ordinal numbers "first", "second", "third", etc. to describe ordinary objects merely indicates different instances of similar objects and is not intended to imply that the objects so described must have a given order in terms of time, space, ranking, or in any other manner.

[0073] Although the present invention has been described in terms of a limited number of embodiments, those skilled in the art in this technical field will appreciate that other embodiments can be contemplated within the scope of the present invention as thus described. In addition, it should be noted that the language used in this specification has been primarily selected for readability and teaching purposes rather than for the purpose of explaining or limiting the subject matter of the present invention. Thus, many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the appended claims. For the scope of the present invention, the disclosure of the present invention is illustrative and not restrictive, and the scope of the present invention is defined by the appended claims.

[0074] Finally, it should be noted that the common knowledge recognized by those skilled in the art has not been elaborated in detail in the present invention. The above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A layout method for the flat position of a switchyard, characterized in that, The method includes the following steps: S1. Construct a frustum of a cone, and determine the intersection line of the frustum of the cone and the ground line of the flat area of the switchyard to be arranged as the first range; S2. Determine multiple contour lines within the first range, and determine multiple first points with the same interval on each contour line; S3. For each first point, place a corner point of the switchyard rectangle, and make the other long-side corner point fall on the contour line where the first point is located, to obtain multiple first layout schemes; the length and width of the switchyard rectangle are used to represent the planar length and width dimensions of the switchyard flat; S4. Calculate the score of each first layout scheme, screen out several first layout schemes with lower scores, and determine a circular second range with the center point of the selected first layout scheme as the center; The calculation method of the score includes: score = (0.006 × slope excavation volume + slope coefficient × 0.08 × slope excavation surface area) + (8 × shaft height + 3 × adit length + 1.3 × road connection distance) + 2 × outgoing line length × number of outgoing line circuits; S5. Determine the contour lines included in each second range; for each contour line, offset half of the length and half of the width of the switchyard rectangle into the terrain respectively, and determine the area between the two offset contour lines as the planar strip area; S6. Divide each planar strip area from the outside of the terrain into strips with equal width, take several points at intervals of the strip width on each strip, divide the strip into grids, and use each grid intersection point as the second point; S7. For each second point, place switchyard rectangles at different angles with the second point as the center to obtain multiple second layout schemes; S8. Calculate the score of each second layout scheme, and screen out the second layout scheme with the lowest score from each second range to obtain several recommended layout schemes.

2. The layout method of the switchyard flat position according to claim 1, wherein: When calculating the score, if the slope of the straight line connection between the point and the plant outgoing line point is greater than or equal to 10%, the outgoing line length is the estimated amount of adit length plus the estimated amount of shaft height; wherein, the estimated amount of adit length is the horizontal straight-line distance between the point and the plant outgoing line point, and the estimated amount of shaft height is the vertical height difference between the point and the plant outgoing line point; if the slope of the straight line connection between the point and the plant outgoing line point is less than 10%, the outgoing line length is the estimated amount of adit length.

3. The layout method for the flat position of the switchyard according to claim 1 or 2, characterized in that: when X < 30m, the value of the slope coefficient is 1; when 30 ≤ X < 60m, the value of the slope coefficient is 1.2; when 60 ≤ X < 100m, the value of the slope coefficient is 1.5; when X ≥ 100m, the value of the slope coefficient is 2; X is the slope height.

4. The layout method of the switchyard flat position according to claim 1 or 2, characterized in that, Between step S3 and S4, when any one of the first layout schemes meets any of the following conditions, it will be excluded: The remaining area of the switchyard rectangle except for the first set distance range near the contour line is above the terrain surface; There is a planar intersection between the outer contour line of the flat and the range within the second set distance on both sides of the ecological red line, farmland, and road center line; there is an intersection with the ground within the third set distance in the incoming direction of the switchyard cable adit; The excavation level of the site leveling slope exceeds the maximum excavation level set by the user; The opening line of the slope intersects with the ecological red line, farmland, and the areas on both sides of the center line of the road.

5. An arrangement device for the flat position of a switchyard, comprising a memory, a processor, and a computer program stored on the memory, characterized in that, The processor executes the computer program to implement the steps of the method according to any one of claims 1-4.

6. A computer-readable storage medium having a computer program / instructions stored thereon, characterized in that, When the computer program / instructions are executed by the processor, the steps of the method according to any one of claims 1-4 are implemented.

7. A computer program product, comprising a computer program / instructions, characterized in that, When the computer program / instructions are executed by the processor, the steps of the method according to any one of claims 1-4 are implemented.

Images