配电网数字共享应用中心建设探索与实践

针对湖南配电网运营监测、调度指挥等缺乏有效平台支撑的问题,为全方位提升配电网专业管理、调度水平,遵循企业中台技术路线、微服务框架原则,基于图模中心和数据中台,设计了一款共享型、平台型微应用群,即配电网数字共享应用中心。该平台全面推进了电网资源业务中台建设,同时给数据中台提供了一个直接面向配电网专业的消费平台,对公司配电网管理数字化转型具有重要意义。     

多阶段规划工业园区的双重功能共享储能配置

以工业园区共享储能为研究对象,提出了包含储能和不间断电源双重功能的工业园区共享储能结构框架,建立了共享储能设备容量和共享储能运营商净现值的模型,为通过优化配置共享储能设备以实现新能源出力备用和替代不间断电源提供了一种可行的路径;采用场景树表示工业园区电力负荷和光伏的随机性,建立了一个旨在使共享储能运营商经济效益最大化的多阶段随机规划模型,并采用随机对偶动态规划算法对模型进行求解;利用具体算例验证了模型的有效性。     

基于VB的凸轮CAD系统的研究与开发

通过对凸轮轮廓曲线的分析，建立凸轮廓线的数学模型，采用圆弧逼近的等误差编程算法，以Visual Basic6．0作为开发工具，研究开发出一套具有良好人机界面的凸轮CAD系统。该系统实现了凸轮轮廓设计的无图纸化，提高了凸轮廓形的设计精度和设计效率，较好地满足了实际精度要求。     

Activation of hydrogen storage materials in the Li–Mg–N–H system: Effect on storage properties

We investigate the thermodynamics, kinetics, and capacity of the hydrogen storage reaction: Li₂Mg(NH)₂ + 2H₂  Mg(NH₂)₂ + 2LiH. Starting with LiNH₂ and MgH₂, two distinct procedures have been previously proposed for activating samples to induce the reversible storage reaction. We clarify here the impact of these two activation procedures on the resulting capacity for the Li–Mg–N–H reaction. Additionally, we measure the temperature-dependent kinetic absorption data for this hydrogen storage system. Finally, our experiments confirm the previously reported formation enthalpy (ΔH), hydrogen capacity, and pressure–composition–isotherm (PCI) data, and suggest that this system represents a kinetically (but not thermodynamically) limited system for vehicular on-board storage applications.     

Structural stability of single-layered LaNi4.25Al0.75 film and its electrochemical hydrogen-storage properties

AB5-based hydrogen storage thin fdms （LaNi4.25Al0.75）, deposited on Cu substrate by dc magnetron sputtering were investigated in this study. X-ray diffraction （XRD） revealed that the microstructure of the layer was in crystal form. SEM and AFM analyses proved that the film appeared to be rather rough with numerous randomly sized pores of approximately 15-40 in nm diameter. Structural stability of the film was examined by the combined analyses of DSC, XRD, and SEM, which indicated that this film maintained its structural stability below 500 K or so, and a network structure was observed on the film after being heated at 700 K for 30 min. Electrochemical hydrogen-storage properties of the films were investigated by simulated battery tests. It was found that single-layered LaNi4.25A10.75 film exhibited electrochemical hydrogen-storage properties similar to typical AB5 alloys in bulk, and the maximum discharge capacity of the film was about 220 mAh/g. After 20 charge/discharge cycles, small needle-shaped aluminium oxide was formed on some fractions of the film surface.     

Preparation and hydrogen sorption properties of Mg-Cu-Y-H systems

Mg-xwt.%CuY (x=15, 20, 25) composites were successfully prepared by reactive mechanical alloying (RMA).X-ray diffraction (XRD) measurement shows that main phases of the as milled composites are MgH2 and Mg2Cu, and they converted into Mg and MgCu2 after dehydrogenation, respectively.Pressure-Composition-Isotherm (PCI) test shows that the composites exhibit double pressure plateau at each isothermal desorption process.The hydrogen absorption and desorption kinetics of the composites become worse with increasing x content, indicating that Mg-Cu phase has a negative effect on the hydrogen sorption properties of the composites.It is supposed that the good hydrogen sorption properties of the composites attribute to the catalyst effect of yttrium hydride distributed in Mg substrate and the particles size reduction and crystal defects formed by RMA.     

2005年中国钽铌工业的统计与分析

2005年，世界钽铌工业总需求保持稳步增长。在世界消费类电子产品持续增长的带动下，中国钽铌工业也出现了明显的增长势头，总产值达到14．42亿元，与2004年比增长了11．09％。宁夏东方有色金属集团有限公司开发的150000μFV/g电容器级钽粉已供用户试用，并且研制出了适合目前铌电容器使用的80000～100000μFV/g高比容铌粉及NbO粉。2005年，世界铌粉、丝、制品市场需求呈现大幅增长，中国电容器级钽粉、丝的出口量都达到了总产量的85％以上，加工制品出口量也达到了75％以上。     

一个安全的基于任务描述的移动代理系统*

为解决移动代理技术中的安全问题提出了一种全新的基于任务描述的移动代理定义和实现方法,据此设计并实现了一个安全的移动代理系统.该系统通过中介/管理Agency统一派发代理,借鉴Java 2安全模型进行本地资源保护,利用信任模型管理并调整系统中平台之间的信任关系.它可以保证平台的安全,也可以利用事后的检测手段发现对代理的攻击,同时利用信任模型调整对恶意平台的信任度来维护整个系统的安全运行.     

可信网络的可信模型与算法设计研究*

分析了网络环境下信任的特点,总结了目前可信网络中常用的算法模型,提出了可信度算法中的一些关键问题以及解决方法.     

基于智能客户端和SOA的新型ASP模式研究*

在对当前广泛研究的ASP模式进行综述的基础上,提出一种新的基于智能客户端和面向服务体系结构的ASP运行模式.这种模式可以解决ASP服务对数据的全面管理与客户对私有数据的安全性要求之间的矛盾.详细阐述了这一模式的优缺点,并将它与现有模式进行了比较.