Hunan Electric Power ›› 2023, Vol. 43 ›› Issue (1): 116-120.doi: 10.3969/j.issn.1008-0198.2023.01.020

• Faults and Analysis • Previous Articles     Next Articles

Cause Analysis and Preventive Measures of Wind Turbine Blade Tower Sweeping

LUO Yanfei1, XIAO Changyuan1 , SUN Maowen2, LUO Shengxi1, ZHANG Hualian1   

  1. 1. CSSC Haizhuang Windpower Co.,Ltd., Chongqing 401122,China;
    2. Chengdu Institute of Special Equipment Inspection and Testing, Chengdu 610200,China
  • Online:2023-02-25 Published:2023-03-03

Abstract: In recent years, there have been a number of blade tower sweeping failures of wind turbine in China, which have seriously affected the safe operation of wind turbines, and also brought a lot of economic losses. This paper analyzes the causes of blade tower sweeping failure in a wind farm from the aspects of clearance design, hoisting maintenance, blade quality, unit operation control, site adaptability, simulation restoration, etc. It is determined that the blade tower sweeping in the wind farm are caused by turbulence overrun, negative shear, and blade installation angle dislocation. Preventive measures are given for different tower sweeping causes, and some suggestions are put up for the clearance design of new models.

Key words: wind turbine blades, blade sweeping tower, extreme wind conditions, negative shear, turbulence intensity

CLC Number: