紧急停机过程中海上风机结构振动特性分析  

Analysis of Structural Vibration Characteristics of Offshore Wind Turbines during Emergency Shutdown

作　　者：朱魁星 李志川 李宁[1] 杨立争 唐朝 张建华[2] ZHU Kuixing;LI Zhichuan;LI Ning;YANG Lizheng;TANG Chao;ZHANG Jianhua(Clean Energy Division,China National Offshore Oil Corporation,Tianjin 300450,China;College of Aerospace and Civil Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]中海油能源发展股份有限公司清洁能源分公司,天津300450 [2]哈尔滨工程大学航天与建筑工程学院,哈尔滨150001

出　　处：《船舶工程》2024年第11期161-168,共8页Ship Engineering

基　　金：国家自然科学基金(52271268)。

摘　　要：紧急停机是确保海上风力发电机安全运行的重要手段之一。当发生紧急情况,如风速过大、电网异常等,风力发电机需紧急停机,以确保风力发电机及周边设施的安全。在紧急停机过程中,风电结构所受荷载会出现快速变化,叶片变桨速度和停机时风速的共同影响导致过大振动,可能影响风机结构的安全性,因此深入研究紧急停机下风机结构动力响应规律至关重要。利用正常风廓线模型构建了不同风速下的风机仿真模拟风场环境,并基于DTU10MW风机模型,利用OpenFAST软件模拟风机在紧急停机下的动力响应,计算不同风速和变桨速度下风机结构的运动响应,并总结其变化规律;利用MLIFE软件分析不同工况下风机塔筒根部的疲劳损伤情况。研究结果可为大型海上风机的设计和运维工作提供重要参考。Emergency shutdown of offshore wind turbines(OWT)is an important measure to ensure the safe operation of wind turbines.In the event of emergencies such as excessive wind speed or power grid anomalies,it is necessary to perform an emergency shutdown of wind turbines to ensure the safety of the turbines and surrounding facilities.During the emergency shutdown process,the loads on the wind turbine structure undergo rapid changes.The combined effects of the blade pitching speed and the wind speed during shutdown can result in excessive vibrations that can affect the structural safety of the wind turbine.Therefore,it is crucial to thoroughly investigate the dynamic response characteristics of wind turbine structures during emergency shutdown.A normal wind profile model is used to simulate the wind field environment at different wind speeds.Based on the DTU 10 MW wind turbine model,the OpenFAST software is used to simulate the dynamic response of the OWT structures during emergency shutdown.The motion response of the OWT structure at different wind speeds and pitch speeds is calculated and its variations are summarized.In addition,the MLIFE software is used to analyze the fatigue damage at the base of the turbine tower under different operating conditions.The results provide important guidance for the design and operation of future large-scale OWTs.

关 键 词：海上风力发电机 紧急停机 变桨控制 结构动力学 疲劳损伤 

分 类 号：TM315[电气工程—电机]