气候变化领域集成服务门户(CCPortal): Wind turbine icing characteristics and icing-induced power losses to utility-scale wind turbines

CCPortal

DOI	10.1073/pnas.2111461118
	Wind turbine icing characteristics and icing-induced power losses to utility-scale wind turbines
	Gao L.; Hu H.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:42
英文摘要	A field campaign was carried out to investigate ice accretion features on large turbine blades (50 m in length) and to assess power output losses of utility-scale wind turbines induced by ice accretion. After a 30-h icing incident, a high-resolution digital camera carried by an unmanned aircraft system was used to capture photographs of iced turbine blades. Based on the obtained pictures of the frozen blades, the ice layer thickness accreted along the blades' leading edges was determined quantitatively. While ice was found to accumulate over whole blade spans, outboard blades had more ice structures, with ice layers reaching up to 0.3 m thick toward the blade tips. With the turbine operating data provided by the turbines' supervisory control and data acquisition systems, icing-induced power output losses were investigated systematically. Despite the high wind, frozen turbines were discovered to rotate substantially slower and even shut down from time to time, resulting in up to 80% of icing-induced turbine power losses during the icing event. The research presented here is a comprehensive field campaign to characterize ice accretion features on full-scaled turbine blades and systematically analyze detrimental impacts of ice accumulation on the power generation of utility-scale wind turbines. The research findings are very useful in bridging the gaps between fundamental icing physics research carried out in highly idealized laboratory settings and the realistic icing phenomena observed on utility-scale wind turbines operating in harsh natural icing conditions. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Unmanned aerial system (UAS); Wind energy; Wind farm field campaign; Wind turbine icing
语种	英语
scopus关键词	ice; altitude; Article; controlled study; photography; relative humidity; temperature measurement; thickness; wind farm; wind power; wind speed
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238617
作者单位	Department of Aerospace Engineering, Iowa State University, Ames, IA 50011, United States
推荐引用方式 GB/T 7714	Gao L.,Hu H.. Wind turbine icing characteristics and icing-induced power losses to utility-scale wind turbines[J],2021,118(42).
APA	Gao L.,&Hu H..(2021).Wind turbine icing characteristics and icing-induced power losses to utility-scale wind turbines.Proceedings of the National Academy of Sciences of the United States of America,118(42).
MLA	Gao L.,et al."Wind turbine icing characteristics and icing-induced power losses to utility-scale wind turbines".Proceedings of the National Academy of Sciences of the United States of America 118.42(2021).