东北电力技术2024，Vol.45Issue(6)：21-26,6.
某风电机倒塔事故分析及防范措施
Analysis and Preventive Measures of Wind Turbine Tower Collapse Event
陈明 1刘俊廷 1董鹏 1索新良1
作者信息
- 1. 华电电力科学研究院有限公司,浙江 杭州 310030
- 折叠
摘要
Abstract
In order to find out the cause of a wind turbine tower collapse,it analyzes the installation process,damage morphology,material properties and monitoring data of the equipment.Results show that the unit for installation phase of the wind tower flange bolt and nut lubricant coating are not standard.After fastening design value not achieved,the pretightening tower abnormal vibration and early operational stage leading to flange bolt under the action of alternating load,a large number of loose bolt,nut falling off,and tower flange bolt group of uneven.In the last grid-connected operation of the unit,the stress on the tower increased sharply,and the unloosened bolts could not bear the design load,which successively occurres tripping and breaking,leading to the instability of the wind motor tower and the collapse of the tower.According to the accident,it puts forward preventive measures to ensure the safe and stable operation of the wind motor.关键词
新能源/风电机/倒塔/螺栓Key words
new energy/wind turbine/tower collapse/bolt分类
信息技术与安全科学引用本文复制引用
陈明,刘俊廷,董鹏,索新良..某风电机倒塔事故分析及防范措施[J].东北电力技术,2024,45(6):21-26,6.
