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Power fluctuation and power loss of wind turbines due to wind shear and tower shadow
Binrong WEN, Sha WEI, Kexiang WEI, Wenxian YANG, Zhike PENG, Fulei CHU
《机械工程前沿(英文)》 2017年 第12卷 第3期 页码 321-332 doi: 10.1007/s11465-017-0434-1
The magnitude and stability of power output are two key indices of wind turbines. This study investigates the effects of wind shear and tower shadow on power output in terms of power fluctuation and power loss to estimate the capacity and quality of the power generated by a wind turbine. First, wind speed models, particularly the wind shear model and the tower shadow model, are described in detail. The widely accepted tower shadow model is modified in view of the cone-shaped towers of modern large-scale wind turbines. Power fluctuation and power loss due to wind shear and tower shadow are analyzed by performing theoretical calculations and case analysis within the framework of a modified version of blade element momentum theory. Results indicate that power fluctuation is mainly caused by tower shadow, whereas power loss is primarily induced by wind shear. Under steady wind conditions, power loss can be divided into wind farm loss and rotor loss. Wind farm loss is constant at 3α(3α−1)R2/(8H2). By contrast, rotor loss is strongly influenced by the wind turbine control strategies and wind speed. That is, when the wind speed is measured in a region where a variable-speed controller works, the rotor loss stabilizes around zero, but when the wind speed is measured in a region where the blade pitch controller works, the rotor loss increases as the wind speed intensifies. The results of this study can serve as a reference for accurate power estimation and strategy development to mitigate the fluctuations in aerodynamic loads and power output due to wind shear and tower shadow.
关键词: wind turbine wind shear tower shadow power fluctuation power loss
A novel light fluctuation spectrum method for in-line particle sizing
Shouxuan QIN, Xiaoshu CAI, Li MA
《能源前沿(英文)》 2012年 第6卷 第1期 页码 89-97 doi: 10.1007/s11708-012-0176-z
关键词: in-line measurement particle size distribution (PSD) incident light intensity particle concentration light fluctuation
Optimal portfolio design of energy storage devices with financial and physical right market
《能源前沿(英文)》 2022年 第16卷 第1期 页码 95-104 doi: 10.1007/s11708-021-0788-2
关键词: portfolio node price fluctuation transmission right energy storage right risk aversion
Yan GU, Yonglin JU
《能源前沿(英文)》 2012年 第6卷 第1期 页码 21-28 doi: 10.1007/s11708-012-0173-2
关键词: pressure fluctuation rolling floating production storage and offloading unit for liquefied natural gas (LNG-FPSO) offshore
A novel high-temperature and high-pressure hydraulic pump based on mononeuron control
Linhui ZHAO, Xin FANG
《机械工程前沿(英文)》 2009年 第4卷 第2期 页码 219-223 doi: 10.1007/s11465-009-0024-y
关键词: mononeuron PID control hydraulic pump pressure fluctuation
《环境科学与工程前沿(英文)》 2022年 第16卷 第1期 页码 6-6 doi: 10.1007/s11783-021-1440-4
• MPs were analyzed throughout three WWTPs with mixed domestic–industrial influents.
关键词: Microplastic Wastewater treatment plant Mixed domestic-industrial influent Characteristic Daily fluctuation
Qian SUI, Jun HUANG, Shuguang LU, Shubo DENG, Bin WANG, Wentao ZHAO, Zhaofu QIU, Gang YU
《环境科学与工程前沿(英文)》 2014年 第8卷 第1期 页码 62-68 doi: 10.1007/s11783-013-0518-z
关键词: PPCPs advanced treatment ozone fluctuation removal contribution
UPFC setting to avoid active power flow loop considering wind power uncertainty
Shenghu LI, Ting WANG
《能源前沿(英文)》 2023年 第17卷 第1期 页码 165-175 doi: 10.1007/s11708-020-0686-z
关键词: active power loop flow (APLF) unified power flow controller (UPFC) wind power uncertainty interval power flow (IPF)
Possible role of power-to-heat and power-to-gas as flexible loads in German medium voltage networks
Mark KUPRAT, Martin BENDIG, Klaus PFEIFFER
《能源前沿(英文)》 2017年 第11卷 第2期 页码 135-145 doi: 10.1007/s11708-017-0472-8
关键词: power-to-gas power-to-heat flexible loads ancillary services coherent energy systems
ZENG Zhuoxiong, HAN Shoulei, ZHOU Lixing
《能源前沿(英文)》 2007年 第1卷 第2期 页码 202-206 doi: 10.1007/s11708-007-0026-6
关键词: gas-particle single-scale second-order large-scale fluctuation second-order sudden-expansion
Evaluation of the power-generation capacity of wearable thermoelectric power generator
Yang YANG, Jing LIU,
《能源前沿(英文)》 2010年 第4卷 第3期 页码 346-357 doi: 10.1007/s11708-010-0112-z
关键词: thermal energy harvester thermoelectric generator biological heat transfer power generating capacity
Renewable power for China: Past, present, and future
Eric MARTINOT
《能源前沿(英文)》 2010年 第4卷 第3期 页码 287-294 doi: 10.1007/s11708-010-0120-z
关键词: renewable energy wind power solar power sustainable energy policy green industry
Carbon emission impact on the operation of virtual power plant with combined heat and power system
Yu-hang XIA,Jun-yong LIU,Zheng-wen HUANG,Xu ZHANG
《信息与电子工程前沿(英文)》 2016年 第17卷 第5期 页码 479-488 doi: 10.1631/FITEE.1500467
关键词: Virtual power plant (VPP) Carbon emissions Electric boiler Wind power Combined heat and power (CHP)
标题 作者 时间 类型 操作
Power fluctuation and power loss of wind turbines due to wind shear and tower shadow
Binrong WEN, Sha WEI, Kexiang WEI, Wenxian YANG, Zhike PENG, Fulei CHU
期刊论文
A novel light fluctuation spectrum method for in-line particle sizing
Shouxuan QIN, Xiaoshu CAI, Li MA
期刊论文
Numerical simulation and analysis of periodically oscillating pressure characteristics of inviscid flow in a rolling pipe
Yan GU, Yonglin JU
期刊论文
A novel high-temperature and high-pressure hydraulic pump based on mononeuron control
Linhui ZHAO, Xin FANG
期刊论文
Distribution, characteristics and daily fluctuations of microplastics throughout wastewater treatment plants with mixed domestic–industrial influents in Wuxi City, China
期刊论文
Removal of pharmaceutical and personal care products by sequential ultraviolet and ozonation process in a full-scale wastewater treatment plant
Qian SUI, Jun HUANG, Shuguang LU, Shubo DENG, Bin WANG, Wentao ZHAO, Zhaofu QIU, Gang YU
期刊论文
UPFC setting to avoid active power flow loop considering wind power uncertainty
Shenghu LI, Ting WANG
期刊论文
Possible role of power-to-heat and power-to-gas as flexible loads in German medium voltage networks
Mark KUPRAT, Martin BENDIG, Klaus PFEIFFER
期刊论文
Numerical simulation of sudden-expansion two-phase flows with two-scale second-order moment particle turbulence model
ZENG Zhuoxiong, HAN Shoulei, ZHOU Lixing
期刊论文
Evaluation of the power-generation capacity of wearable thermoelectric power generator
Yang YANG, Jing LIU,
期刊论文
Carbon emission impact on the operation of virtual power plant with combined heat and power system
Yu-hang XIA,Jun-yong LIU,Zheng-wen HUANG,Xu ZHANG
期刊论文