大型海上换流站浮托安装数值模拟和实测分析
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1.上海交通大学;2.中国电建集团华东勘测设计研究院有限公司

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国家自然科学基金项目(面上项目,重点项目,重大项目),《大型海洋平台浮托安装系统非线性耦合动力响应预报与海上作业支持》


Numerical Simulation and Field Measurement Analysis on Float-over Installation of Large Offshore Converter Station
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1.Shanghai Jiao Tong University;2.Power China Huadong Engineering Corporation

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    摘要:

    随着海上风电的迅猛发展,大型海上换流站得到越来越多的应用,但随着换流站体积和重量的增加以及换流站内部精密仪器对运输及安装过程中组块运动的特殊限制,其海上安装难度也在不断加大,传统的吊装法不能满足该安装要求,而适用于大体积、大吨位组块安装的浮托法相对可靠但也需要多加考量。通过OrcaFlex软件对三峡如东海上换流站的运输及浮托安装的关键阶段进行耦合水动力分析,为换流站的实际运输和浮托安装作业提供一定参考,进而降低其海上安装风险。通过实船监测系统,对运输过程中换流站的倾角和加速度、浮托安装过程中的海洋环境条件及驳船和换流站的运动进行了全方位、全过程监测,并将实测结果与数值模拟结果进行对比,二者对比良好,进一步验证了数值计算的可靠性。

    Abstract:

    With the rapid development of offshore wind power, large offshore converter stations have more and more applications, but with the increase in volume and weight of the converter station and the special restrictions of the precision instruments inside the converter station on the movement of the topside during transportation and installation, the difficulty of offshore installation is also increasing. The traditional lifting method cannot meet the installation requirements, and floatover method suitable for large-volume, large-ton topside installation is relatively reliable but also needs more consideration. Use OrcaFlex to carry out coupled hydrodynamic analysis of the transportation and the key stages of floatover installation of SanXia RuDong offshore converter station, which provides a certain reference for the actual transportation and floatover installation operation of the converter station and reduces the risk of the process further. Through the real ship monitoring system, the inclination angle and acceleration of the converter station during transportation, the sea environmental conditions and the movement of the barge and the converter station during the floatover installation are monitored in an all-round and whole process. The measured results are compared with the numerical simulation results, and the two are well compared, which further verifies the reliability of the numerical calculation.

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  • 收稿日期:2022-11-28
  • 最后修改日期:2022-11-28
  • 录用日期:2022-12-19
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