摘要
系泊系统是保障浮式风机系统稳定安全运行的关键。掌握极端环境下引发浮式风机系泊破断失效风险的原因,对于优化系统设计及风险应急决策具有重要意义。目前极端阵风条件对浮式风机系泊安全造成何种影响仍不清晰。本文对某半潜式浮式风机开展气动-水动-伺服-弹性耦合数值模拟,预报不同向变极端相干阵风(ECD)工况与浪流耦合环境下系统的气动和水动响应,分析了阵风持续时间、风向变化角等关键参数对系泊张力响应的影响。结果表明系泊张力随持续时间的增大而先增大后减小,当持续9s左右时,所研究浮式风机的系泊张力最大,可能造成系泊线的断裂,这是影响系泊安全的关键参数。
Mooring system is a key subsystem to ensuring the stable and safe operation of floating wind turbine systems.Understanding the causes of mooring breakage risk in the extreme conditions is important to optimize the design and risk decision.The impact of extreme wind gusts on the safety of mooring system is still unclear.In this paper,the aero-hydroservo-elastic coupling numerical simulations of a semi-submersible wind turbine are carried out to predict the aerodynamic and hydrodynamic responses of the system under different extreme coherent gust(ECD)conditions with wave and current.The effects of key parameters such as gust rise time and wind direction changing angling on the mooring tension response are analyzed.The results show that the mooring tension first increases and then decreases with an increasing rise time.When the rise time is about 9 s,the mooring tension of the studied floating offshore wind turbine reaches the largest value,potentially leading to mooring line fracture.In addition,rise time is the key parameter affecting mooring safety.
作者
马刚
何栗兴
张旭
董晔弘
白勇
Gang Ma;Li-xing He;Xu Zhang;Ye-hong Dong;Yong Bai(Yantai Research Institute,Harbin Engineering University;CSSC Haizhuang Windpower Equipment Co.,Ltd.;School of Marine Engineering and Technology;Guangdong Haizhuang Offshore Wind Power Research Center Co.,Ltd.)
出处
《风机技术》
2022年第3期57-62,共6页
Chinese Journal of Turbomachinery
基金
国家自然科学基金资助项目(51979050)。
关键词
浮式风机
向变极端相干阵风
系泊线
动态响应
持续时间
Floating Offshore Wind Turbine
Extreme Coherent Gust With Direction Change
Mooring Line
Dynamic Response
Rise Time
