两种不同基础的漂浮式风机载荷对比分析

Comparative Analysis of Loads of Two Types of Floating Wind Turbines with Different Foundations

根据海上风机建模和载荷计算,对比了半潜式、张力腿式和固定式基础机组在额定风速、切出风速及极限空转情况下瞬态时序及载荷统计值:三种不同基础的风机在机头部件的载荷差异不大;但整体上,半潜式要大于另外两种,当波浪达到一定程度之后,这种载荷差异表现更明显,尤其是塔底载荷。对于半潜式风机,主要是通过优化设计半潜平台、选择合理总体参数及特殊的控制策略等方法来降低其载荷。

The loads of two kinds of floating wind turbines with different foundations,the semi submersed type and the tension leg type,and the fixed foundation type wind turbine are analyzed comparatively.Transient time sequences and load statistics under the rated wind speed,cut-out wind speed and ultimate idling conditions are calculated.The results show that the loads of these three types on the turbine head are of little difference.However,the load of the semi submersed type unit is overall larger than that of the other two types.When the wave reaches a certain magnitude,the differences of the loads are more obvious,especially for the bottom load.For semi submersed type wind turbine unit,we can reduce the loads with optimization design,selection of proper overall parameters and special control strategies.