Numerical and experimental investigation on active hydraulic tensioner system for a TLP under tether fails condition

IF 4 2区工程技术 Q1 ENGINEERING, CIVIL Marine Structures Pub Date : 2024-09-15 DOI:10.1016/j.marstruc.2024.103693

Jianwei Wang , Xuchu Liu , Jiachen Chai , Yuqing Wang , Xiaofan Jin , Ze He , Wei Cai , Rui Guo

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Abstract

In this paper, a new active control system for hydraulic tensioners is proposed. Based on the three-dimensional potential flow theory, the dynamic response of TLP-riser-tensioner under tether fails is studied. It is found that when the tension-leg platform’ tethers fail instantaneously, not only the six-degree-of-freedom motion response of TLP will change, but also the tension 'jump' phenomenon will occur in the tension-riser (TTR). The experiment of the active control scheme based on the platform motion response is designed, and the stability of tension output of hydraulic tensioner under normal working conditions is verified by scale model experiment. Based on the joint simulation of AMESim and Simulink, the designed active hydraulic tensioner and its control strategy are effective for the tension control under the condition of second-order wave force failure. In the case of tethers fail, the fuzzy PID control method of active hydraulic tensioner designed in this paper has stronger robustness than the traditional PID control method.

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系绳失效条件下 TLP 的主动液压拉伸器系统的数值和实验研究

本文提出了一种新的液压拉伸器主动控制系统。基于三维势能流理论，研究了系绳失效时 TLP-立杆-拉伸器的动态响应。研究发现，当张力脚平台的系绳瞬时失效时，不仅 TLP 的六自由度运动响应会发生变化，而且张力立管（TTR）也会出现张力 "跳跃 "现象。设计了基于平台运动响应的主动控制方案实验，并通过比例模型实验验证了液压张力器在正常工况下张力输出的稳定性。基于 AMESim 和 Simulink 的联合仿真，设计的主动液压拉伸器及其控制策略对二阶波力失效条件下的拉伸控制是有效的。在系绳失效的情况下，本文设计的主动液压拉伸器模糊 PID 控制方法比传统的 PID 控制方法具有更强的鲁棒性。

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来源期刊

Marine Structures 工程技术-工程：海洋

CiteScore

8.70

自引率

7.70%

发文量

157

审稿时长

6.4 months

期刊介绍： This journal aims to provide a medium for presentation and discussion of the latest developments in research, design, fabrication and in-service experience relating to marine structures, i.e., all structures of steel, concrete, light alloy or composite construction having an interface with the sea, including ships, fixed and mobile offshore platforms, submarine and submersibles, pipelines, subsea systems for shallow and deep ocean operations and coastal structures such as piers.