Abnormal operation of a variable pitch system is one of the essential factors causing wind turbine tower collapses.Analysis on a collapsed wind turbine tower carried out in terms of field survey,data review,technical analysis and other aspects concludes that the wind turbine tower collapse is due to the backup power failure of the variable pitch system failing to normally implementing the blade withdrawal instructions which brings about overspeed of the blades and ultimately leads to the tower collapse.The measures and suggestions to avoid such accidents are put forward concerning wind turbine logic,technical precautions,equipment and management,which offers reference for the safe operation and transformation of wind turbines.
关键词
风电机组/倒塔/变桨系统/后备电源
Key words
wind turbine/tower collapse/variable pitch system/backup power
维普
万方数据