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Tower of offshore wind power single pile foundation and configuration design method thereof

A single-pile foundation and offshore wind power technology, applied in infrastructure engineering, wind power generation, design optimization/simulation, etc., can solve problems such as time-consuming calculation and affect project progress, and achieve the effect of reducing cost

Active Publication Date: 2021-06-29
HUANENG CLEAN ENERGY RES INST +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Further optimization of tower and monopile diameters to find the design with the lightest overall support structure would be computationally time consuming and affect the project schedule

Method used

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  • Tower of offshore wind power single pile foundation and configuration design method thereof
  • Tower of offshore wind power single pile foundation and configuration design method thereof
  • Tower of offshore wind power single pile foundation and configuration design method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A project in Jiangsu area adopts 5MW units, the mud surface elevation is -12.4m, the foundation top elevation is 13m, the hub center height is 94m, the tower height is 78.22m, and the tower is divided into three sections.

[0052] Table 1 shows the design parameters and results before and after optimization. Figure 4a with Figure 4b The configuration diagram of the support structure before and after optimization is given. It can be seen from Table 1 that the tower design with three cone sections was adopted before optimization, and the tower bottom diameter D 2 =6.00m, single pile mud surface diameter D 3 The weight of the tower is 6.80m, the weight of the tower is 320.6t, and the weight of the single pile is 926.3t; after optimization, a tower design with one cone section is adopted, and the diameter of the tower bottom is D 2 =6.00m, single pile mud surface diameter D 3 It is 6.65m, the tower weight is 322.9t, and the single pile weight is 889.1t. Before and af...

Embodiment 2

[0057] A project in Jiangsu area adopts 4.5MW units, the mud surface elevation is -19.12m, the foundation top elevation is 13m, the hub center height is 94m, the tower height is 81m, and the tower is divided into three sections.

[0058] Table 2 shows the design parameters and results before and after optimization. Figure 5a with Figure 5b The configuration diagram of the support structure before and after optimization is given. It can be seen from Table 1 that the tower design with three cone sections was adopted before optimization, and the tower bottom diameter D 2 =5.50m, single pile mud surface diameter D 3 is 6.50m, the weight of the tower is 209.8t, and the weight of the single pile is 834.6t; after optimization, a tower design with one cone section is adopted, and the diameter of the tower bottom is D 2 =5.50m, single pile mud surface diameter D 3 It is 6.30m, the tower weight is 212.1t, and the single pile weight is 770.1t. Before and after optimization, the to...

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Abstract

The invention discloses a tower of an offshore wind power single pile foundation and a configuration design method thereof. The configuration design method comprises the following steps of: calculating tower load according to parameters of an environment where a wind turbine generator is located, and designing tower configuration and overall supporting structure frequency, wherein the tower configuration is as follows: the tower configuration comprises one conical section and n-1 straight sections, and the number n of the sections of the tower does not exceed 5; optimizing a tower foundation structure by using an iterative method based on the parameters of the environment where the wind turbine generator is located, the tower load and the tower configuration, and meeting the overall supporting structure frequency requirement during optimization; judging whether the foundation structure meets a convergence criterion of fan supporting structure design or not, if so, obtaining a design result, and if not, recalculating the tower load; and obtaining specific parameters of the current tower. The tower configuration is subjected to optimization design to find the optimal design of the lightest overall supporting structure mass, and the optimal design of the lightest overall supporting structure mass can be obtained by giving tower configuration parameters, so that the project cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of support structure design of offshore wind power generator sets, and in particular relates to a tower frame of an offshore wind power single pile foundation and a configuration design method thereof. Background technique [0002] Benefiting from the technological progress and scale expansion of wind power, the price of wind turbines, the investment cost of wind power development and the cost of operation and maintenance are showing a downward trend. Such as figure 1 As shown, the offshore wind turbine mainly includes the wind turbine unit, the cone section of the tower, the straight section of the tower, the single pile section above the mud surface, and the single pile section below the mud surface. From the perspective of wind turbine prices, the support structure of offshore wind turbines includes two parts: towers and foundations: the cost of wind turbine towers accounts for about 8% of the investment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/42E02D27/52G06F30/13G06F30/20
CPCE02D27/425E02D27/52G06F30/13G06F30/20Y02E10/727
Inventor 周昳鸣郭小江刘鑫闫姝陈晓路刘凕江姚中原朱亚波
Owner HUANENG CLEAN ENERGY RES INST