Wind turbines with larger capacity of variable speed pitched type call for larger diameter rotors, which will result in reduction in stiffness of blandes. If there is extreme wind speed with direction changes, there will be larger deformation in blades and load variation, and the tip tower approach will also change. The wind turbine control algorthm design based on logic of the yaw error stop is presented in this paper after analyzing the normal stop logic and fast stop logic. A series of simulation researches combined with the 2. 5 MW wind turbine hare carried out. The simulation results show that the designed control algorithm can reduce the load applied on turbine and can also make the tip tower approach better satisfy the design requirements of GL2010 criteria.%随着变速变桨风力发电机组单机功率提高, 风轮直径不断增加, 叶片的刚度降低. 在极端风速、 风向变化时, 叶片形变变大, 机组载荷波动较大, 叶尖塔筒距离也会随之发生变化. 本文在分析了正常停机逻辑和快速停机逻辑的基础上,提出了基于偏航误差停机逻辑的风力机控制算法设计, 并结合国产某2. 5 MW风力发电机组做了一系列的仿真研究. 结果表明, 所设计的控制算法既能降低机组的载荷, 又能使得叶尖塔筒距离更加满足GL2010的标准设计要求.
展开▼
