A method for determining the design elevation and shape of a hoisting platform for a mountain wind farm
By adopting the principle of "more excavation and less filling" in mountainous wind farms, and by combining the minimum boundary line and maximum contour line of the hoisting platform, the shape and elevation of the hoisting platform were optimized, which solved the problem of large engineering workload in the design of hoisting platforms for mountainous wind farms and reduced the project cost and time.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SOUTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP CORP
- Filing Date
- 2026-03-20
- Publication Date
- 2026-07-03
Smart Images
Figure CN122333728A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wind power generation technology in mountainous areas, and in particular to a method for determining the shape of a hoisting platform for a wind farm in mountainous areas. Background Technology
[0002] A wind farm is a device that converts wind energy into electrical energy using a group of wind turbines. Based on the location of the wind turbine group, it can generally be divided into onshore wind farms and offshore wind farms. The mountain wind farm targeted in this invention is a type of onshore wind farm.
[0003] The hoisting platform will provide space for the hoisting of wind turbine equipment and subsequent maintenance. Based on the current specifications of mainstream wind turbine equipment from major manufacturers, the hoisting platform area is mostly 2000m². 2 5000m 2 Because mountain wind farms have many characteristics such as poor site conditions, steep terrain, difficult hoisting, and difficult transportation, the rationality of the design elevation and shape of the wind turbine platform will have a significant impact on the amount of earthwork for leveling the hoisting platform site and the amount of slope protection work, thus affecting the economic efficiency of the project.
[0004] Currently, the design of hoisting platforms for wind farms in mountainous areas is mostly based on the shapes provided by wind turbine manufacturers, without optimization. This leads to significant amounts of slope embankment and retaining works in complex terrain. Embankment work in mountainous areas is often impractical, while retaining works are time-consuming and costly. Therefore, it is essential to follow the principle of "more excavation, less filling" in the design of hoisting platforms for wind turbines in mountainous areas. This can greatly reduce the amount of embankment and retaining works, lower project costs, and shorten the construction period. Summary of the Invention
[0005] The purpose of this invention is to provide a method for determining the design elevation and shape of a hoisting platform for a mountainous wind power plant, addressing the aforementioned shortcomings. This method determines the site design elevation and hoisting platform shape scheme based on the principle of "more excavation and less filling," which can greatly reduce the amount of filling and support work, lower project costs, shorten the project construction period, and improve the economic nature of the project.
[0006] This invention is achieved through the following scheme: A method for determining the design elevation and shape of a hoisting platform for a wind farm in mountainous areas includes the following steps: Step 1: Obtain the raw data and draw the "minimum lifting platform boundary line"; Step 2: Overlay the data obtained in Step 1 onto the electronic topographic map and obtain the original topographic elevation at each inflection point; Step 3: The minimum value among the inflection point elevations obtained in Step 2 is used as the "low elevation" of the hoisting platform; Step 4: Find the "highest value contour line" that is closest to the "low elevation" in Step 3, and use its elevation as the site design elevation; Step 5: Use the "largest contour line" from Step 4 to cut the "minimum lifting platform boundary line" from Step 1, and combine the cut "minimum lifting platform boundary line" with the "largest contour line" to obtain the lifting platform shape line.
[0007] In step one, the raw data is the minimum hoisting platform size and shape data required by the wind turbine equipment manufacturer.
[0008] In step two, the electronic topographic map is the project site electronic topographic map, which is the data measured by the design unit in the early stage of the project.
[0009] In steps two and three, the minimum value among the inflection point elevations on the "minimum control shape line of the hoisting platform" is defined as the "low elevation".
[0010] In step four, a “high value contour line” is defined as a contour line that is closest to the “low elevation” and has an elevation greater than the “low elevation”.
[0011] Step two specifically involves overlaying the original coordinates of the "minimum control shape line of the hoisting platform" from step one onto the electronic topographic map and obtaining the original topographic elevation H of each inflection point of the "minimum control shape line of the hoisting platform". i .
[0012] In step three, the "low elevation" H0 is determined based on the results of step two. The "low elevation" is the minimum value among the inflection point elevations of all "minimum control shape lines of the hoisting platform", i.e.: H0 = min(H i ).
[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. This method uses the elevation of the "maximum contour line" as the design elevation of the hoisting platform. The shape line of the hoisting platform is obtained by combining the "maximum contour line" with the "minimum hoisting platform boundary line". Under the condition of meeting the functional requirements of the hoisting platform, the filling and support structure engineering is avoided, which can greatly reduce the amount of filling and support engineering, reduce the project cost, shorten the project construction period, and achieve better project economy. Attached Figure Description
[0014] Figure 1 This is a flowchart of the entire process in this invention; Figure 2 This is a schematic diagram showing the minimum dimensions and shape of the hoisting platform required by the manufacturer in Example 2; Figure 3 This is a schematic diagram of the platform positioned at the wind turbine location in Example 2; Figure 4 This is a schematic diagram illustrating the elevation of each inflection point of the minimum control shape line of the hoisting platform in Example 2. Figure 5 This is a schematic diagram of the contour lines at an elevation of 783m in Example 2; Figure 6 This is a schematic diagram showing that the hoisting platform shape line in Example 2 is irregular. Detailed Implementation
[0015] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.
[0016] Any feature disclosed in this specification (including any appended claims and abstract) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.
[0017] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a predetermined orientation, or be constructed and operated in a predetermined orientation. Therefore, they should not be construed as limitations on this invention.
[0018] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.
[0019] Example like Figure 1 As shown, the present invention provides a technical solution: A method for determining the design elevation and shape of a hoisting platform for a wind power plant in a mountainous area includes at least the following steps: Step 1: Obtain the minimum hoisting platform dimensions and shape required by the wind turbine equipment manufacturer, and draw the "minimum hoisting platform boundary line"; Step 2: Overlay the shape line of the hoisting platform obtained in Step 1 onto the electronic topographic map and obtain the original terrain elevation at each inflection point; Step 3: The minimum value among the inflection point elevations obtained in Step 2 is used as the "low elevation" of the hoisting platform; Step 4: Find the "highest value contour line" that is closest to the "low elevation" in Step 3, and use its elevation as the site design elevation; Step 5: Use the "largest contour line" from Step 4 to cut the "minimum lifting platform boundary line" from Step 1, and combine the cut "minimum lifting platform boundary line" with the "largest contour line" to obtain the lifting platform shape line.
[0020] In step one, the boundary line drawn according to the minimum hoisting platform size and shape required by the wind turbine equipment manufacturer is defined as the "minimum control shape line of the hoisting platform". In steps two and three, the minimum value among the inflection point elevations on the "minimum control shape line of the hoisting platform" is defined as the "low elevation", symbol H0; In step four, a “high value contour line” is defined as a contour line that is closest to the “low elevation” and has an elevation greater than the “low elevation”. This plan determines the site design elevation and hoisting platform shape based on the principle of "more excavation and less filling," which can greatly reduce the amount of filling and retaining works, lower project costs, shorten the project construction period, and improve the project's economic efficiency.
[0021] Example 2 like Figures 2-6 As shown, the present invention provides a more specific technical solution: A wind farm in a mountainous area has one turbine location situated at a mountain pass, employing an 8.0MW wind turbine. The equipment manufacturer requires the following minimum hoisting platform dimensions and shape: Figure 2 As shown, the platform is rectangular, with dimensions of 55m × 42m. Determine the design elevation and shape of the hoisting platform.
[0022] The process is as follows: 1. After obtaining the topographic map, Figure 2 The central platform is positioned at the wind turbine location, ensuring that the center of the wind turbine foundation coincides with the wind turbine location, and that the long side is as parallel as possible to the contour lines. Figure 3 As shown.
[0023] 2. Obtain the elevations of each inflection point of the minimum control shape line of the hoisting platform, such as... Figure 4 As shown.
[0024] 3. Determine the "lower elevation". There are a total of 4 minimum control line inflection points for the hoisting platform in this project, namely P1-P4, with elevations of 782.54m, 782.26m, 793.06m and 793.68m respectively. The minimum value is taken as the elevation of the inflection point P2, which is 782.26m, that is, the "lower elevation" H0=782.26m.
[0025] 4. Locate the contour line with the highest elevation closest to the "low elevation" H0=782.26, and use its elevation as the design elevation of the hoisting platform, i.e., design elevation H=783.00m. In this example, the contour line with an elevation of 783m is used. Figure 5 The magenta line is shown.
[0026] 5. Obtain the "maximum contour line" from step 4 and cut it into the "minimum control line of the hoisting platform" to get the "minimum envelope line," which is the shape line of the hoisting platform. Figure 6 As shown by the blue line, part of this line coincides with the "maximum contour line" and part of it coincides with the "minimum control line of the hoisting platform".
[0027] Therefore, the design elevation of the wind turbine installation platform was determined to be 783m, and the platform's shape is irregular. Figure 6 As shown, the next step of site leveling design work can proceed.
[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A method for determining the design elevation and shape of a hoisting platform for a wind power plant in a mountainous area, characterized in that, Includes the following steps: Step 1: Obtain the raw data and draw the "minimum lifting platform boundary line"; Step 2: Overlay the data obtained in Step 1 onto the electronic topographic map and obtain the original topographic elevation at each inflection point; Step 3: The minimum value among the inflection point elevations obtained in Step 2 is used as the "low elevation" of the hoisting platform; Step 4: Find the "highest value contour line" that is closest to the "low elevation" in Step 3, and use its elevation as the site design elevation; Step 5: Use the "largest contour line" from Step 4 to cut the "minimum lifting platform boundary line" from Step 1, and combine the cut "minimum lifting platform boundary line" with the "largest contour line" to obtain the lifting platform shape line.
2. The method for determining the design elevation and shape of a hoisting platform for a mountainous wind farm according to claim 1, characterized in that: In step one, the raw data is the minimum hoisting platform size and shape data required by the wind turbine equipment manufacturer.
3. The method for determining the design elevation and shape of a hoisting platform for a mountainous wind farm according to claim 2, characterized in that: In step two, the electronic topographic map is the project site electronic topographic map, which is the data measured by the design unit in the early stage of the project.
4. The method for determining the design elevation and shape of a hoisting platform for a mountainous wind farm according to claim 3, characterized in that: In steps two and three, the minimum value among the inflection point elevations on the "minimum control shape line of the hoisting platform" is defined as the "low elevation".
5. The method for determining the design elevation and shape of a hoisting platform for a mountainous wind farm according to claim 4, characterized in that: In step four, a "high value contour line" is defined as the contour line that is closest to the "low elevation" and has an elevation greater than the "low elevation".
6. The method for determining the design elevation and shape of a hoisting platform for a mountainous wind farm according to claim 5, characterized in that: In step two, the original coordinates of the "hoisting platform minimum control shape line" in step one are superimposed into the electronic topographic map, and the original topographic elevation H of each inflection point of the "hoisting platform minimum control shape line" is obtained i .
7. The method for determining the design elevation and shape of a hoisting platform for a mountainous wind farm according to claim 6, characterized in that: In step three, the "low elevation" H0 is determined based on the results of step two. The "low elevation" is the minimum value among the inflection point elevations of all "minimum control shape lines of the hoisting platform", i.e.: H0 = min(H i ).