半潜式平台DP定位系统推进器推力优化研究

发布时间：2018-11-04 09:27

【摘要】：根据船级社规范要求,提出了一种分析平台DP系统(Dynamic Positioning System)定位能力的静态方法——逐级增加力偶法。该方法把推进器推力大小和方向优化问题,转化为在推进器位置处增加力偶的问题,经过转化优化变量减少了一半。同时该方法可以准确考虑推进器在各个方向上受海流、船体和附近其他推进器对其有效推力的影响,以及能够考虑推进器限位角的影响。基于Matlab软件,运用逐级增加力偶法开发一平台DP定位能力分析界面。该界面即可以在给定环境条件下分析平台在各个方向上定位所需要的推进器最小总功率;还可以在给定推进器最大功率下模拟平台在各个方向上能够抵抗最大环境条件载荷力。逐级增加力偶法和开发的界面在海洋石油982平台的基本设计过程中已得到实际应用,分析的DP定位能力结果和撰写的分析报告得到了DNV与CCS船级社的认可。进而验证了逐级增加力偶法的准确性和界面的可行性。
[Abstract]:According to the specification of classification society, this paper presents a static method for analyzing the (Dynamic Positioning System) positioning capability of DP system. This method transforms the thruster thrust size and direction optimization problem into the problem of adding force couple at the propeller position, and reduces the optimization variable by half. At the same time, this method can accurately consider the influence of the current on the propeller in all directions, the influence of the hull and other nearby thrusters on its effective thrust, and the influence of the limiting angle of the thruster. Based on Matlab software, a platform DP positioning capability analysis interface is developed by stepwise adding force couple method. This interface can analyze the minimum total power of the propeller needed for the platform to locate in each direction under the given environment condition, and can also simulate the platform to resist the maximum environmental load force in each direction under the given maximum power of the propeller. The stepwise adding force couple method and the developed interface have been applied in the basic design of the offshore oil 982 platform. The results of the analysis of the DP positioning ability and the analysis report have been approved by the DNV and the CCS classification society. Furthermore, the accuracy and interface feasibility of the stepwise increasing force couple method are verified.
【作者单位】：江苏科技大学;戈朗(上海)海事技术咨询有限公司;
【基金】：国家自然科学基金资助项目(项目编号:51079065)
【分类号】：P751

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