基于进化策略的海上风电支撑结构多参数同步优化设计

针对典型海上风电场3 MW固定式三桩单立柱风力机支撑结构主尺度优化问题,文章采用参数化建模方式进行力学建模,在有限元分析的基础上,结合生物进化策略,以风机塔顶位移、结构最大Mises应力为限制条件,以减小支撑结构整体体积为优化目标,对海上三桩单立柱风力机支撑结构主尺度参数进行多参数同步优化设计。研究结果表明:在保证风机塔架刚度和结构强度的前提下,通过结合有限元分析与进化策略对风机主尺度参数进行同步优化,风机支撑结构整体体积明显下降,优化效果明显。该多参数同步优化设计方法可为海上风电固定式支撑结构设计提供参考。

Multi-parameter simultaneously optimal design of support structure for offshore wind turbine based on evolutionary strategy

Aiming at optimization for the main component sections of typical 3 MW offshore tripod support structure,a multi-parameter simultaneously optimal design method was then proposed combing the finite element analysis with evolutionary strategy,in which the main component sections of the structure were optimized simultaneously.The displacement of the tower top and the maximum Mises stress of the structure were selected as the limiting conditions.Reducing the volume of the structure was selected as the optimization target in the optimization.The results show that the volume of the support structure can be significantly reduced under the premise of ensuring the rigidity of tower and strength of the support structure in the optimization.The method would provide reference for the optimal design of fixed support structures for offshore wind turbine.