Results 61 to 70 of about 6,393 (154)
, 2015 发展风电产业是当前世界各国和地区为实现经济发展低碳化而采取的新型产业发展方向之一。福建省东山岛与台湾的澎湖列岛同属常规能源较贫乏而风能资源较丰富的地区。在推进两岸新兴产业合作的进程中,两地可基于彼此的相对竞争优势而开展风电产业合作,进而提升两地在风电产业方面的整合竞争力。2013年度国家社科基金项目“丰富‘一国两制’实践和推进祖国统一研究”(批准号:13&ZD052)资助; 2013年度教育部人文社会科学重点研究基地重大项目“海峡两岸民间社会桥接模式和路径研究”(批准号:13JJD810011 ...
王勇
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Research on Key Technologies and Industrial Chain Cooperation Paths of Floating Offshore Wind Power Between China and Europe [PDF]
China’s equipment manufacturing system and Europe’s experience in project complement each other. Firstly, this paper focused on the industrial chain and key technologies of floating offshore such as wind turbines, floating foundations, mooring and ...
GANG Ao +5 more
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Gaoya dianqi, 2017 为了使风电机组/风电场与电网之间能够和谐稳定高效的运行,笔者在通过对电网电压骤升时风电机组的暂态分析,提出了采用静止同步补偿器STATCOM实现双馈风电机组高电压穿越的方案。在电网电压骤升的情况下,通过STATCOM控制策略吸收电网容性无功并补偿感性无功支撑系统运行不脱网。在MATLAB/Simulink仿真平台上搭建仿真模型并进行仿真,仿真结果表明,当电网电压骤升时STATCOM不仅能确保风电机组不脱网运行还能及时向故障电网提供一定的感性无功,协助电网电压快速恢复。
叶盛峰, 王维庆, 王海云
doaj
Research on Doubly-Fed Wind Turbine Shaft System With Virtual Inertia for Torsional Vibration Analysis [PDF]
ObjectivesShafting mathematical model of wind turbine is the basis of torsional vibration characteristics analysis. Shafting model is very important for the reliability of analysis results.
SAN Jiqiang, SUN Zhenglong
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Gaoya dianqi, 2015 针对风电场集电系统箱变在雷害事故中大量损坏的现状,对雷击风电场架空集电线路引起的暂态过电压进行了计算。运用ATP/EMTP电磁暂态仿真软件建立了包括风电机组、集电线路和箱变的等效模型,考虑了雷击方式、雷电流波形、风力机接地电阻以及风电机组拓扑结构对箱变两侧暂态过电压的影响。研究结果表明:箱变低压侧的暂态过电压与波头时间成反比关系,波头时间为1.2μs时箱变低压侧的暂态过电压是20μs时的8.75倍,箱变高压侧的暂态过电压几乎不受波头时间的影响;接地电阻越大,箱变两侧的暂态过电压越大 ...
潘俊文 +5 more
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Gaoya dianqi, 2020 为研究双馈风电机组（doubly fed induction generator,DFIG）低电压穿越对风电场动态等值的影响,提出了一种基于撬棒控制策略的双馈风电场动态等值建模方法。首先通过对DFIG在电网故障时的转子电流分析,给出了时域下转子暂态电流表达式。然后研究撬棒电路两种常用控制策略在不同电压跌落程度及DFIG运行状况下对风电机组低电压穿越的影响,仿真结果表明两种控制策略均有各自的适用范围。在此基础上,文中提出了撬棒电路投切曲线及控制策略选择区域曲线 ...
陈洁 +5 more
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Gaoya dianqi, 2016 针对并网风力发电机组性能分析评估中存在大量定性指标、各指标模糊性和随机性并存的问题,提出了基于云重心评判法的并网风电机组性能分析评估模型。首先从技术参数、整体功能、系统可靠性及机组维修性4个层面分析并构建了风电机组性能分析综合评价指标体系。然后将各指标值转化为云模型并确定各个指标的权重值。最后计算出修正的加权偏离度,将其输入定性评判云发生器得到风电机组性能评估结果。运用所提方法对某型风力发电机组性能进行分析,并与模糊综合评判法进行比较,验证了该模型的优越性和有效性。
张心刚, 苏浩益
doaj
Analysis on Operating Clearance of Matched Single Row Tapered Roller Bearings for Wind Turbine Main Shaft [PDF]
[Introduction] The main shafting structure with double supports of single row tapered roller bearings has been widely used in wind turbines, and determining the appropriate bearing operating clearance is crucial for the reliable operation of bearings and
Lin LIU +5 more
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Probabilistic load flow calculation for three-phase unbalanced droop-regulated islanded microgrids based on low-rank approximation method [PDF]
, 2020 For the characteristics of unbalanced nodes and constant frequency in the sagging control island microgrid, taking into account its three-phase asymmetry and the influence of uncertainty factors, a three-phase probability trend calculation method based ...
Fu, H. +4 more
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A Frequency Regulation Method of Energy Storage System Based on Adaptive Adjustment of Virtual Synchronous Generator Control Parameters [PDF]
ObjectivesThe large-scale penetration of wind power has reduced the frequency regulation capability of the power system to a certain extent.As a relatively mature and effective technical means, the energy storage system is widely used in power grid ...
LI Bo +4 more
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