大型海上风电机组扭振瞬态响应计算研究

Study on Torsional Vibration Transient Response Calculation of Large Offshore Wind Turbines

针对波动性的空气扭转载荷会严重影响风电机组传动系统中关键部件使用寿命的问题,以某5MW海上直驱型风电机组传动系统为研究对象,建立了模拟真实风的风剪切、塔影效应、湍流效应的气动载荷模型,归纳了风电机组扭振分析的计算流程,结合简化的风电机组双质量模型得到了传动系统在不同风载荷模型作用下的瞬态扭振响应特性。结果表明:风剪切—塔影效应对于风电机组的瞬态扭振响应影响较小,而湍流风效应对风电机组的扭振响应较大。

Aiming at the problem that fluctuating air torsional load will seriously affect the service life of key components in the transmission system of wind turbines,taking the transmission system of a 5 MW offshore direct-drive wind turbine as the research object,the aerodynamic load models simulating wind shear,tower shadow effect and turbulence effect of real wind are established,and the wind turbines are summarized. The calculation flow of group torsional vibration analysis and the transient torsional vibration response characteristics of transmission system under different wind load models are obtained by combining the simplified dual mass model of wind turbine. The results show that the wind shear-tower shadow effect has little effect on the transient torsional vibration response of wind turbine,while the turbulent wind effect has greater effect on the torsional vibration response of wind turbine.