Optimization design method for truss type wind turbine foundation structure in medium-water-depth sea area

Abstract

The invention discloses an optimal design method for a truss-type wind turbine foundation structure in a medium-water-depth sea area, and the method comprises the steps: carrying out the hierarchical optimization search of design parameters based on a design constraint experience library, carrying out the classification and decoupling of a control criterion, and carrying out the verification and evaluation, and finally obtaining an optimal structural design scheme. According to the method, a set of multi-criterion and multi-parameter structure optimization method is researched and developed for the truss type wind turbine foundation structure type in the medium-water-depth sea area, design criteria are graded according to engineering design experience, meanwhile, a search method for design parameters is determined, and therefore the optimization design efficiency of the wind turbine foundation type is effectively improved.

Description

technical field [0001] The invention relates to the technical field of optimizing the foundation structure of offshore wind turbines, in particular to an optimization design method for the foundation structure of a truss-type wind turbine in a medium-deep sea area. Background technique [0002] Wind energy is a renewable green energy. With the continuous advancement of technology, besides hydropower, wind power technology is the most mature, with large-scale development and good commercial development prospects. Looking back at the development history of the wind power industry, it can be roughly divided into three stages: relatively mature onshore wind power technology, rapidly developing offshore wind power technology, and offshore wind power technology with great potential in the future. Although onshore wind power technology is relatively mature, its development space is severely restricted by problems such as large land occupation and obvious noise, while offshore wind...

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Problems solved by technology

[0004] (1) The existing optimization design is mainly aimed at the foundation type of wind turbines in shallow waters. When extended to medium water depths, the truss foundation structure type shows better performance, but the existing optimization method lacks the foundation type of truss wind turbines in medium water depths. applicability;

[0005] (2) According to the requirements of the offshore wind power structure design code, multiple control indicators such as pile foundation bearing capacity, foundation edge, structural stress, punching and shear stress of pipe joints, and natural frequency need to be checked in the foundation structure design. The existing research work lacks more mature ones. Optimal design methods involving multi-variable and multi-control criteria;

[0006] (3) The traditional "trial-verification-modification" design method in the offshore wind power industry requires a large number of designers to do long-term design work, making it difficult to achieve rapid design and obtain optimized solutions

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