Results 21 to 30 of about 6,996 (119)

交直流混合微网关键技术研究

open access: yesGaoya dianqi, 2012
结合交流、直流微网各自优点以及中国分布式电源、储能装置能量输出特点和中国负荷的供电需求,笔者介绍了交直流混合微网的优点及我国的微网技术的发展,分析了国内外交直流混合微网的研究现状及发展趋势。根据某科技产业园的负荷和电能质量需求,提出了适合中国优质电力产业园区供电需求的交直流混合微电网的技术方案;在现有微网技术研究基础上,讨论了中国交直流混合微网的关键技术和研究方向。
殷晓刚, 戴冬云, 韩云, 廖志超
doaj  

Queer Reconstruction: Smiling Queers and the Making of 2SLGBTQI+ Identity in Canada

open access: yesSexuality, Gender &Policy, Volume 9, Issue 2, May 2026.
ABSTRACT The legalization of same‐sex marriage in 2005 signaled a new relationship between queer people and the Canadian state. Governments and queer communities moved from contention to collaboration, framing queerness through pride and celebration.
Seon Yuzyk
wiley   +1 more source

面向主动式配网的微电网技术探究

open access: yesGaoya dianqi, 2015
微电网技术作为主动式配电网的关键技术,是智能电网建设重要范畴。文中首先阐述了主动式配电网的建设必要性,介绍了微电网的优越性,并结合中国电力系统的实际情况,探讨了微电网建设过程中存在的技术难点和微电网接入后带来的系统问题,并结合智能电网建设的背景,提出了微电网技术的发展趋势。为实现低碳电力系统建设提供了一个良好的解决思路。
董开松, 谢永涛, 贾嵘, 沈渭程
doaj  

孤岛微电网系统的混合控制策略及动态滤波技术研究 [PDF]

open access: yes全球能源互联网
应用于孤岛型微电网以实现频率控制功能的传统控制器多为分数阶PID(fractional order PID,FOPID)控制器及模糊分数阶PID(fuzzy fractional order PID,FFOPID) 控制器,二者的控制性能均存在局限性。针对这一问题,设计了一种变论域混合FFOPID控制器,用于提高孤岛微电网的频率控制性能。通过对比FOPID、FFOPID以及变论域混合FFOPID3种控制器作用时的不同效果 ...
李翔宇   +7 more
doaj   +1 more source

Edge‐Fluorinated Flower‐Like Porous Graphene Microspheres With Enlarged Interlayer Spacing for High‐Performance Potassium‐Ion Batteries

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT The utilization of carbonaceous anodes in electrochemical systems, particularly potassium‐ion batteries (PIBs), remains hindered by sluggish kinetics and modest capacities, which are caused by the intrinsic ion storage mechanisms and constrained interlayer spacings.
HaiSong Chen   +7 more
wiley   +1 more source

多能互补微电网的能量管理研究

open access: yesGaoya dianqi, 2015
微电网系统以其高效性、灵活性的运行优势在电力系统中不断得到重视。为使微电网系统能够稳定、可靠、经济地运行,文中以多种分布式能源为对象,建立了一个以综合成本最小为优化目标、满足多约束条件的微电网能量管理模型。以实际微电网系统为背景,讨论分析多能互补微电网在不同季节典型日条件下的运行经济性,并结合实际情况,给出一个典型微电网的经济运行方案。结果表明,文中所建立的模型具有很好的适用性,能够为微电网实际运行提供一定的理论指导。
马喜平, 谢永涛, 董开松, 贾嵘
doaj  

Application‐Grade TiAl Single Crystal With Excellent Room‐Temperature Plasticity and Strength Prepared by Seeded Electromagnetic Confinement Directional Solidification

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT In this study, a newly developed seeded electromagnetic confinement directional solidification (EMCDS) technique was employed to fabricate large‐scale TiAl single crystal ingots with a diameter of 32 mm, overcoming the long‐standing size limitations that have hindered their industrial application.
Wei Wang   +9 more
wiley   +1 more source

基于理想向量空间投影理论的微网规划方案经济性综合评价

open access: yesGaoya dianqi, 2017
为了对微网规划方案的经济性进行科学评价,提出了基于理想向量空间投影理论的微网经济性综合评估数学模型。构建了适应微网规划特点的综合评价指标体系,包括初始投资成本、运行维护成本、节能效益、环保效益、可靠性效益、政府补贴效益、降损效益、延缓电网投资效益等。在此基础上,融合理想向量空间模型和灰色矢量投影原理,实现微网规划方案优选排序。通过对一个实际的微网示范工程进行计算分析,验证了该模型的有效性和优越性,结果表明,该模型可以全面考虑影响微网规划特征的要素,量化分析微网规划方案的优劣,引导微网规划的投资方向。
方小飞, 贺铁光, 苏浩益
doaj  

Cancellous Bone‐Like Sr‐Doped Hydroxyapatite/Gelatin Porous Scaffolds With Nanofibrous Architecture and Ion Release for Promoting Osteogenesis

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Constructing a porous scaffold with the essential features of natural cancellous bone, including structural architecture and biochemical cues, is one of the pivotal factors for effective bone regeneration. In this study, a biomimetic composite porous Gelatin fibrous scaffold (SrHA/Gelatin) incorporating ultralong strontium‐doped hydroxyapatite
Yin‐Chuan Wang   +8 more
wiley   +1 more source

多场景多模式独立微电网经济运行研究

open access: yesGaoya dianqi, 2018
相对于传统电网而言,微电网具有灵活多变的特点,尤其是独立微电网,其可工作于多种运行模式下。不同的工作模式会带来不同的经济效益,为此,有必要对具有多种运行模式的微电网进行研究。针对这种具有多种运行模式的微电网,建立了相应的经济调度模型,定义了3种场景,分场景定性研究独立微电网的经济调度策略;在建立了经济调度模型的基础上,内层采用优先排序法,外层采用改进的粒子群算法,实现经济调度模型的求解。最后,结合南麂岛微电网算例,对3种场景下微电网经济调度模型进行求解,仿真结果表明 ...
杨欢红   +3 more
doaj  

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