风力发电机滑动偏航系统载荷特性分析  

Analysis on Load Characteristic of Gliding Yaw System of Wind Power Generator

作　　者：丛智慧 安利强[2] 翟永杰[2] 张家旗[2] 

机构地区：[1]大唐(赤峰)新能源有限公司,内蒙古赤峰024000 [2]华北电力大学,河北保定071003

出　　处：《广东电力》2015年第2期25-29,共5页Guangdong Electric Power

基　　金：河北省自然科学基金资助项目(E2013502291);河北省高等学校科学技术研究指导项目(Z2011229)

摘　　要：偏航控制过程中,滑动式偏航系统载荷特性是影响风力发电偏航系统安全可靠性的关键因素,现以2 MW风力发电机为研究对象,采用IEC标准中Von Kamman谱模拟湍流风,考虑重力载荷、气动载荷及惯性载荷的影响,建立风力发电机组模型,基于Bladed软件仿真风力发电机偏航时机组的动态特性,研究偏航时风况、偏航速度及偏航角度对滑动式偏航系统荷载的影响规律,为风力发电机的运行维护及改进设计提供依据。研究结果表明,偏航过程中同时变桨,变桨速率对偏航轴承的荷载有重要影响。湍流强度影响偏航轴承的疲劳和极端载荷的波动情况,偏航速度越大,偏航轴承处极限荷载越大。In process of yaw control,load characteristic of gliding yaw system is a key factor affecting security and reliability of yaw system of wind power generation. Taking 2 MW wind power generator as a research object,using Von Kamman spectrum in IEC standard to simulate turbulence wind and considering affects of gravitational load,aerodynamic load and in-ertial load,a wind turbine generator model was established. Based on dynamic characteristic of the generator when using Bladed software simulating yaw of the wind power generator,affecting principles of wind regime,yaw velocity and yaw an-gle on load of gliding yaw system were studied which might provide references for running maintenance and improvement de-sign on the wind power generator. Research results indicates that variable pitch rate in process of yaw have an important af-fect on load of yaw bearing and turbulence intensity may affect fatigue of yaw bearing and fluctuation of extreme load. In addition,extreme load of yaw bearing might be bigger when the yaw velocity is faster.

关 键 词：风力发电机 滑动式偏航系统 偏航轴承 载荷特性 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]