基于两种反距离加权插值的海上风电施工船作业预报对比

Comparison on Offshore Wind Construction Vessel Workability Based on Two Inverted Distance Weighting Interpolating Schemes

结合反距离加权法提出两种获得非固定格点处施工船舶可作业率的插值流程,并进行对比。对比采用空间分辨率为(1/12)°的法国气象局全球海浪预报数据,以180 m起重船海上风电机组大直径单桩基础施工为海上风电施工船舶典型作业,并选择我国拟规划的海上风电场典型海域待开发海域均匀分布的144个插值点进行计算对比。结果表明:采用这两种反距离加权插值流程获得的施工船舶可作业率极为接近,144个插值点采用两种流程的船舶可作业率误差均在1.5%内,这在工程应用上可认为是精度等效,可在不同应用场景下相互替换。

Two schemes of inverted distance weighting(IDW) method are proposed towards the interpolation of the construction vessel workability.In the comparison,the global forecast wave data,of which the spatial resolution is(1/12)° provided by France Meteo,is employed.The offshore wind mono pile foundation constructed by a crane vessel with 180 m length is studied,and 144 interpolating points averagely spaced in one of the planned China's wind farm is selected.The results show that,the construction vessel workability computed with two schemes is extremely similar to each other.The errors between both for any interpolating point is below 1.5%,which can be considered as equivalent in accuracy in engineering application perspective.It can be interchangeable in different application scenarios.