Transient behavior of the cold end system in an indirect dry cooling thermal power plant under varying operating conditions

doi:10.1016/j.energy.2019.06.030

CORC > 兰州理工大学 > 兰州理工大学

	Transient behavior of the cold end system in an indirect dry cooling thermal power plant under varying operating conditions
	Wu, Tao 1; Ge, Zhihua 1; Yang, Lijun 1; Du, Xiaoze 2
刊名	ENERGY
	2019-08-15
卷号	181 页码:1202-1212
关键词	Indirect dry cooling Cold end system Dynamic characteristic Cooling water adjusting strategy Coal consumption of power generation
ISSN号	0360-5442
DOI	10.1016/j.energy.2019.06.030
英文摘要	In order to reduce the power curtailment of renewable energy, it is essential to improve the dispatch-ability of thermal power generating unit, among which the dynamic characteristics of the cold end system under varying operating conditions are of significant and necessary. Taking the thermal power plants with indirect dry cooling systems as object, the unsteady models for the dynamic characteristics of cold end were established. The transient behavior under the changing natural crosswind or power load were obtained. Four cooling water adjusting strategies were proposed to compare the standard coal consumptions during operating condition varying. The results indicate that the back pressure and cooling water temperature can change slowly despite of the abruptly change of the natural wind speed and output power load. It takes the cold end longer time to reach another stable state when the natural crosswind speed changes to a bigger value or the output power load decreases in a slower rate. The difference of ambient temperature and natural crosswind speed hardly affects the dynamic behaviors of the cold end system. When the cooling water flow rate is adjusted in the proper way, at most 21.4% more standard coal could be saved during load decreasing processes. (C) 2019 Elsevier Ltd. All rights reserved.
资助项目	Fundamental Research Funds for the Central Universities[2018QN038]
WOS研究方向	Thermodynamics ; Energy & Fuels
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000476965900098
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31639]
专题	兰州理工大学能源与动力工程学院
通讯作者	Ge, Zhihua; Du, Xiaoze
作者单位	1.North China Elect Power Univ, Minist Educ, Key Lab Condit Monitoring & Control Power Plant E, Beijing 102206, Peoples R China 2.Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wu, Tao,Ge, Zhihua,Yang, Lijun,et al. Transient behavior of the cold end system in an indirect dry cooling thermal power plant under varying operating conditions[J]. ENERGY,2019,181:1202-1212.
APA	Wu, Tao,Ge, Zhihua,Yang, Lijun,&Du, Xiaoze.(2019).Transient behavior of the cold end system in an indirect dry cooling thermal power plant under varying operating conditions.ENERGY,181,1202-1212.
MLA	Wu, Tao,et al."Transient behavior of the cold end system in an indirect dry cooling thermal power plant under varying operating conditions".ENERGY 181(2019):1202-1212.