摘要
[目的]自2022年起,海上风电的国家补贴将全面退出。海上风电机组基础是风电机组的支撑结构,对海上风电场的安全运行起着至关重要的作用。在平价上网、“30·60”双碳目标和国家“十四五”能源规划等政策的指导下,合理地选择、设计海上风电机组基础,是海上风电场降本增效的有效手段。[方法]文章以某近海风电场风机基础选型设计为例,综合国内海上风电场的建设经验,进行基础型式比选;首先选择单桩基础、导管架基础和高桩承台基础3种基础型式进行初选,然后结合该近海风电场的海洋水文和地质条件,分析不同风机基础型式的适用水深及优缺点,从结构安全性、施工可行性、工期及工程经济性等方面进行了综合比选。[结果]研究表明:风机基础型式的选择与水深、土层地质条件、风电机组固有频率、施工安装设备能力、施工工期、工程造价等几个因素有关。单桩基础结构型式优良、施工可行、工期最短、经济性最优,优势明显。[结论]推荐该近海风电场风机基础采用单桩基础方案。
[Introduction]From 2022,the state subsidies for offshore wind power has been fully withdrawn.The foundation of offshore wind turbines is the supporting structure of wind turbines and plays a crucial role in the safe operation of offshore wind farms.Reasonable selection and design of the offshore wind turbine foundation is an effective way to reduce costs and increase efficiency of offshore wind farms under the guidance of such policies as the"30·60"dual-carbon target and the national"14th Five-Year Plan"energy plan.[Method]The article took the selection and design of a wind turbine foundation for a certain offshore wind farm as an example,and combined the construction experience of domestic offshore wind farms to compare and select the foundation types;firstly,preliminary selection was made among three foundation types,namely monopile foundation,jacket foundation and high pile cap foundation;then,combined with the marine hydrological and geological conditions of the offshore wind farm,the applicable water depths and advantages and disadvantages of different wind turbine foundation types were analyzed,and a comprehensive comparison was conducted from the aspects of structural safety,construction feasibility,duration and engineering economy.[Result]Research has shown that the selection of wind turbine foundation type is related to several factors such as water depth,soil geological conditions,natural frequency of wind turbines,capacity of construction and equipment installation,construction duration,and engineering cost.The monopile foundation has excellent structural type,construction feasibility,the shortest construction duration and the best economy.[Conclusion]The monopile foundation is recommended for the wind turbine foundation of this offshore wind farm.
作者
李保洋
LI Baoyang(Jiangsu Guoxin Investment Group Limited,Nanjing 210005,Jiangsu,China)
出处
《南方能源建设》
2023年第4期166-173,共8页
Southern Energy Construction
关键词
降本增效
风机基础设计
海上风电机组地基基础设计软件FDOW
单桩基础
高桩承台基础
cost reduction and efficiency increase
wind turbine foundation design
foundation design of offshore wind turbines(FDOW)
monopile foundation
high pile cap foundation
