Case Study of "Wake Effect" of Adjacent Offshore Wind Farms [PDF]
[Introduction] The purpose of this paper is to study the influence of real "wake effect" of adjacent offshore wind farms on generation loss. [Method] The method is established with the wake scene classification based on the actual arrangement of wind ...
Donglin CUI +4 more
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目的 本国际临床指南由欧洲残疾儿童学会(the European Academy of Childhood Disability,EACD)牵头制定,旨在解决发育性协调障碍(developmental coordination disorder,DCD)的定义、诊断、评估、干预以及与社会心理方面的临床应用关键问题。 方法 本指南针对五个领域的关键问题,通过文献综述和专家团队的正式讨论达成共识。为保证指南的循证基础,以“机制”、“评估”和“干预”为检索词, 对2012年更新以来提出的最新建议以及新增的“社会心理问题”和“青少年/成人”为检索词进行检索。根据牛津大学循证医学中心证据等级 (证据水平 [level of evidence, LOE]1–4) 将结果进行分类,最终转化为指南建议。并由国际 ...
Jing Hua +6 more
wiley +1 more source
Optimization Analysis of Permanent-Magnet Direct-Drive Wind Turbine Elbow Shape Nacelle [PDF]
[Introduction] In view of the irregular geometric shape, complex load and heavy weight of the nacelle of a permanent magnet direct drive wind turbine, it is necessary to optimize the analysis and design.
Fangshu CHEN, Feng SHI, Xuebing YANG
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Wind Power, Hydropower and Thermal Power Combined Low-Carbon Maintenance Optimization Based on Continuous Hidden Markov Model [PDF]
[Introduction] In the context of the new power system, low-carbon maintenance of wind turbines and coordinated maintenance with conventional wind turbine generator systems (WTGS) need to be solved urgently.
Min XIE +4 more
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Research on Factors Influencing the Heat Dissipation Performance of Semi-Direct Drive Permanent Magnet Wind Generator [PDF]
[Introduction] With the development of wind power generation technology, the unit capacity of permanent magnet wind generator is increasing, and the heating power is also increasing.
Desheng MIAO, Di WU, Rui SUN, Wenpeng GE
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为提升远海风电对称双极柔性直流送端交流系统单相接地故障和两相短路故障工况(第一类故障)下的功率输送能力,以及三相接地故障工况(第二类故障)的交流电压稳定性,提出海上换流站协调控制策略。首先分析了第一类故障的过电压和极间环流产生机理,以及第二类故障的交流电压失稳机理。在此基础上,提出了功率平衡控制策略和输出有功电流策略。第一类故障下定电压控制极采用限压策略,功率平衡控制策略抑制极间环流,增大定电压控制极的功率,减少了交流电压控制器响应时间,提升了功率输送能力。第二类故障工况下 ...
叶荣 +4 more
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Research on Dynamic Characteristics of Monopile Offshore Wind Turbine Tower Under Different Wind Speed Conditions [PDF]
Based on the ANSYS finite element software, the NREL 5 MW monopile offshore wind turbine tower system was modeled in 3D. The influence of different wind speeds on the dynamic characteristics of the tower structure was simulated and analyzed under the ...
CHEN Shangnian +4 more
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Experimental Research on Capacity Expansion of Large-Scale Offshore Wind Farm Under Multiple Wake Models [PDF]
[Introduction] This article aims to study the optimal planned capacity setting of large-scale offshore wind farm. [Method] A series of numerical experiments were conducted on a single planned site with a capacity of 1 GW using three models with different
Chuqi XU +3 more
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Change in cyclone disaster vulnerability and response in coastal Bangladesh
The number of deaths owing to tropical cyclones in Bangladesh has significantly reduced. Category 4 Cyclone Gorky in 1991 and Sidr in 2007 caused 147,000 and 4,500 deaths respectively, whereas Category 1 Cyclone Mora in 2017 resulted in six. Face‐to‐face interviews with 362 residents, participant observation, and focus‐group discussions answer a ...
Edris Alam +4 more
wiley +1 more source
Design and Implementation of Wind Turbine Background Monitoring and Management Platform [PDF]
随着经济的不断发展,人类对传统的化石资源的开发速度越来越快,地球上的化石资源也越来越匮乏。要想保证能源的可持续利用,保证人们的资源消费需求。节约使用石化能源、开发利用新能源和可再生能源十分关键。而风力发电作为能源当中重要的电力行业,已成为全世界各个国家大力发展的重要新能源之一。 在中国,全国平均风功率密度为100W/m2,风能资源的总储量约为32.26亿kw,现行可供开发的资源共计约10亿kw,其中包含了2.53亿kw陆地风能和7.5亿kw近海风能。风的可利用区域分布广阔,装机数量多 ...
熊菲
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