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Tower frame and configuration design method of offshore wind power monopile foundation

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

Active Publication Date: 2022-05-31
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 frame and configuration design method of offshore wind power monopile foundation
  • Tower frame and configuration design method of offshore wind power monopile foundation
  • Tower frame and configuration design method of offshore wind power monopile foundation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0052] Table 1 presents the design parameters and results before and after optimization. Figure 4a and Figure 4b The configuration diagram of the support structure before and after optimization is given. As can be seen from Table 1, the tower design with 3 cone segments was adopted before optimization, and the tower bottom diameter D 2 =6.00m, single pile mud surface diameter D 3 It 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 a 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 after optimization, the towe...

Embodiment 2

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

[0058] Table 2 presents the design parameters and results before and after optimization. Figure 5a and Figure 5b The configuration diagram of the support structure before and after optimization is given. As can be seen from Table 1, the tower design with 3 cone segments was adopted before optimization, and the tower bottom diameter D 2 =5.50m, single pile mud surface diameter D 3 It 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 a 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 towe...

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Abstract

The invention discloses a tower frame of an offshore wind power monopile foundation and a configuration design method thereof. According to the environmental parameters of the wind turbine unit, the load of the tower frame is calculated, the tower frame type and the overall support structure frequency are designed, and the tower frame type is: Tower type: 1 section of cone section, n-1 section of straight section, the number of sections of the tower n does not exceed 5; based on the environmental parameters of the wind turbine, the load of the tower, and the tower type, the iterative method is used for the base structure of the tower Carrying out optimization, meeting the frequency requirements of the overall support structure during optimization; judging whether the base structure meets the convergence criterion for the design of the wind turbine support structure, and if so, obtaining the design result; if not, recalculating the tower load; obtaining the current tower load Frame specific parameters. To optimize the design of the tower structure to find the optimal design with the lightest weight of the overall support structure, the optimal design with the lightest weight of the overall support structure can be obtained by giving the parameters of the tower structure, which reduces the project cost.

Description

technical field [0001] The invention belongs to the technical field of supporting structure design of an offshore wind power generating set, and particularly relates to a tower of an offshore wind power monopile 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 show a continuous downward trend. like figure 1 As shown, the offshore wind turbine mainly includes the fan 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 offshore wind turbine support structure includes two parts: the tower and the foundation: the cost of the wind turbine tower accounts for about 8% of the investment cost o...

Claims

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Application Information

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Patent Type & Authority Patents(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