摘要
[目的]基于搭载了DTU 10 MW风机的三四筒型全潜式浮式风机整机海上拖航过程,开展了物理模型试验,对比研究三浮筒型式和四浮筒型式的SFOWT在拖航过程中各自由度运动响应及拖缆力在不同工况下的变化规律。[方法]首先在静水中开展自由衰减试验,随后在规则波和不规则波浪环境中开展拖航过程试验,研究不同的拖缆点高度、波高以及周期对拖航过程的影响。[结果]结果表明:(1)对SFOWT的垂荡、横摇和纵摇自振周期进行分析,发现相同自由度下2种结构SFOWT的自振周期相差在5 s以内,三浮筒式SFOWT与四浮筒式SFOWT相比,三浮筒式SFOWT垂荡加速度更小,纵摇和横摇的自然周期更大;(2)随着波高的增加,SFOWT在各自由度上的响应以及拖缆力都在增大,规则波和不规则波工况下波高的增加对三浮筒型式SFOWT垂荡加速度、横摇角的影响更大,纵摇角以及拖缆力较小;(3)当波浪周期与SFOWT自身的固有周期相差较大时,随着波浪周期的增大,除垂荡加速度外SFOWT各自由度上的响应呈现减小的趋势;(4)当拖缆点高度与水线面齐平时,2种型式SFOWT的拖缆力幅值较其他两种工况最大分别减小11.1%和14.7%。[结论]四浮筒型式SFOWT的拖航运动性能更佳。在实际工程中,应当将拖缆点高度布置在结构自浮时水面线所在的位置,以减小拖航过程中的运动响应。
[Introduction]A comparative research was conducted to investigate the variation rules of motion responses in various degrees of freedom(DOF)and towline forces in the towing process of three-column submerged floating offshore wind turbines(TC-SFOWT)and four-column submerged floating offshore wind turbines(FC-SFOWT)under different working conditions,through a physical model test using a DTU 10 MW wind turbine.[Method]Firstly,a free attenuation test was carried out in still water.Then towing process tests were carried out in regular wave and irregular wave environments.The research focuses on the effects of different towline point heights,wave heights,and wave periods on the towing process of SFOWTs.[Result]These tests yielded the following findings.(1)The analysis related to heave,roll,and pitch natural vibration periods of SFOWTs reveals that the difference in natural vibration periods between the two SFOWT structures in the same DOF is within 5 seconds,the TC-SFOWT exhibits a smaller heave acceleration and longer natural periods of pitch and roll;(2)As wave height increases,the response of SFOWTs in each DOF and the towline force also increase,and the increase in wave height has a greater influence on the heave acceleration and roll angle of the TC-SFOWT under both regular wave and irregular wave conditions,while it has a smaller impact on the pitch angle and towline force;(3)When the wave period differs greatly from the natural period of SFOWTs,an increase in wave period results in a decreasing trend in the SFOWTs'responses across various DOFs,except for heave acceleration;(4)When the towline point is flush with the water level,the towline force amplitudes of the TC-SFOWT and FC-SFOWT are respectively 11.1%and 14.7%lower than those of the other two working conditions.[Conclusion]In conclusion,the towing motion performance of the FC-SFOWT is better.In actual engineering practices,the towline point height when the structure is self-floating should be arranged at the water surface line,so as to reduce motion response during the towing process.
作者
齐喜玲
乐丛欢
任建宇
张浦阳
丁红岩
齐晓亮
QI Xiling;LE Conghuan;REN Jianyu;ZHANG Puyang;DING Hongyan;QI Xiaoliang(State Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation,Tianjin University,Tianjin 300072,China;CNOOC Energy Technology&Services Limited,Beijing 100027,China)
出处
《南方能源建设》
2024年第2期17-30,共14页
Southern Energy Construction
基金
国家自然科学基金“深远海漂浮式基础和风电机组一体化拖航系统耦合动力响应及调控机理研究”(52271287)。
关键词
DTU
10
MW
全潜式浮式风机
一体化拖航
动力响应
自由衰减
模型试验
DTU 10 MW
submerged floating offshore wind turbine
integrated towing
motion response
free attenuation
model test
