台风型风电机组极限载荷与现场数据分析

ANALYSIS OF ULTIMATE LOAD AND FIELD DATA OF WIND TURBINES UNDER TYPHOON CONDITION

针对2014年"威马逊"台风和"海鸥"台风袭击广东湛江某风电场的风电机组现场数据,进行极限载荷和现场数据分析。根据台风型风电机组GB/T 31519—2015和风电机组设计要求GB 18451.1—2012标准,采用DNV GLBladed软件,分别对标准工况和台风工况下的1.5 MW双馈型风电机组的极限载荷进行仿真,并将仿真结果与台风现场数据进行对比分析。最后探讨在台风环境下,通过优化变桨距系统的控制策略来提高风电机组安全性和可行性。结果表明,风电机组在台风工况的极限载荷远大于标准工况;台风风速和风向的极端变化是造成风电机组载荷成倍增加的主要原因;通过优化变桨距控制策略可降低风电机组在台风环境下的载荷,提高风电机组的安全性。

Considering that typhoon is one of the main security risks of wind turbines in Southeast coastal area of China, according to the data of wind turbines of the wind farm in Zhanjiang, Guangdong province, which experienced Typhoon Rammasun and Typhoon Kalmaegi in 2014, the ultimate load and field data were analyzed. Based on GB/T 31519-2015 wind turbine under typhoon condition and GB 18451.1-2012 design requirement of wind turbine, the ultimate loads under standard cases and typhoon cases of 1.5 MW double-fed wind turbine were simulated by the DNV GL-Bladed software, respectively, the simulation results were compared with the data under the typhoon condition. Finally, the feasibility of raising the safety of wind turbine under typhoon condition through optimizing the control strategy of pitch system was discussed. The results show that the ultimate load under typhoon case is much more than that under standard case, the extreme changes of wind speed and wind direction are the main reason for causing the double increase of load of wind turbine under typhoon condition, and it can reduce the ultimate load under typhoon condition by improving pitch control strategy and improve safety of wind turbine.