台风型风电机组塔架轻量化设计研究

目的实现台风型风电机组塔架的轻量化设计。方法对风电机组台风环境载荷工况和台风期运行控制策略进行研究,提出在基于GB/T 31519—2015《台风型风力发电机组》的台风型风电机组基础上,开发台风控制策略,使机组在台风期间持续处于对风状态。结果利用BLADED软件计算机组各关键部位的载荷,结果表明,台风控制策略降低了23.5%的机组塔基载荷,重新设计塔架,塔架质量降低了13%,实现了塔架轻量化设计,单个风电场节省约416万元,具有很好的经济效益。通过机组现场实测,在摩羯台风期间,采用台风控制策略的台风型风电机组塔基载荷,Mxy理论仿真值与实测值的相关性达94.1%,高度一致。结论验证了理论仿真计算的准确性和轻量化塔架应用的可行性,助力于我国风力发电行业沿海地区及海上型风力发电机组的发展。

Lightweight Design of Typhoon Wind Turbine Tower

The work aims to realize the lightweight design of typhoon wind turbine tower.The typhoon environment load cases and the typhoon control strategy were researched.Based on the typhoon wind turbine according to GB/T 31519—2015 Wind Turbine Generator System under Typhoon Condition Standard,the typhoon control strategy was developed to keep the wind turbine in the opposite state during the typhoon.The loads on key parts of the wind turbine unit were calculated by software BLADED and the results indicated that the tower base load was reduced by 23.5%with typhoon control strategy.The tower was redesigned and the weight of tower was reduced by 15%,realizing the lightweight design,saving about RMB 4.16 million for one wind farm and having good economic benefit.According to the field measurement of the wind turbine unit,during the period of typhoon Capricorn,the correlation between the theoretical simulation value of the tower base load Mxy of the typhoon type wind turbine unit adopting the typhoon control strategy and the measured value was 94.1%,which was highly consistent.It verifies the accuracy of the theoretical simulation calculation and the feasibility of the application of the lightweight tower,and contributes to the development of the wind turbine units in the coastal areas and offshore areas of China's wind power industry.