针对东海海域首个配备监测系统的全钢型负压筒式海上风电机组进行数值模拟研究。首先对海洋环境载荷进行分析,分别建立全钢型负压筒基础模型和主体钢结构模型,采用叠加法计算风电机组的倾角变形;并对不同工况下负压筒和结构的监测量进行数值模拟,最终分析所有测点监测参数的变化范围,从而确定实时监测报警系统参数阈值,并进行报警分析,可为海上风电机组的运维安全提供参考。
Abstract
Suction bucket is widely used in offshore wind power foundation because of its strong adaptability, installation convenience and lower cost. However, this kind of shallow foundation structure is easily affected by the seabed foundation. In order to ensure the safe operation of offshore wind turbine, it is necessary to monitor the foundation structure of wind turbine in real time. The first monitored offshore wind turbine with steel suction bucket established in East China Sea is analyzed numerically. Firstly, the environmental loads are analyzed. The suction bucket model and the structure model are established respectively. Then, the inclination of wind turbine is calculated by using superposition principle. The stresses of the bucket and wind power structure under different working conditions are calculated. And the deviation of static and dynamic parameters of each monitoring point on the turbine are predicted. The reasonable range of monitoring parameters are and determined. Finally, the thresholds of monitoring parameters for establishing the on-line and alarm system of the turbine are obtained. And the alarm strategy is analyzed. Thus, an important reference for the operation and maintenance safety of offshore wind turbine with shallow foundation is provided.
关键词
海上风电 /
风电机组 /
结构 /
地基 /
实时监测 /
负压筒
Key words
offshore wind power /
wind turbines /
structures /
foundations /
monitoring /
suction buckets
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