Results 61 to 70 of about 13,806 (207)
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Low conductivity, slow ion‐diffusion, and limited reactive sites are common problems in electrocatalysts and electrode materials. In this study, a complex NiTe–CoTe heterojunction with abundant Te vacancies embedded in N, P, and F co‐doped hollow carbon nanorods (NiTe1−x–CoTe1−x/NPFC) was fabricated via a simple ionic liquid‐assisted ...
Mingjie Yi +7 more
wiley +1 more source
Design and Development of Power Quality On-line Analyzing System [PDF]
, 2009 为实现对电能质量实时监测与管理,提高电力企业信息化水平,同时也为电能质量的控制奠定基础,本文设计并研发了一种电能质量在线分析系统。该系统基于.nET技术分三个层次构建,采用AdO.nET与gdI+等技术实现,支持电能质量指标查询、报表打印、设备管理等功能。本系统具有多指标分析的完善性,自定义生成报表的灵活性,使用方便,界面友好等特点。In order to achieve real-time supervision and management of power quality,enhance ...
牛媛媛, 陆达, 陈明金
core
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The development of sodium‐ion batteries (SIBs) is limited by slow charge transfer kinetics and large material volume changes caused by the large radius of Na+. Leveraging the excellent physicochemical properties and unique heterostructures of metal selenides, ultrafine hetero‐CuFeSe2‐CoSe2 nanoparticles are in situ wrapped by ...
Ying Zhu +5 more
wiley +1 more source
Dianci bileiqi, 1992 1 前言一定条件下绝缘介质中能量损耗的大小是衡量绝缘介质性能的主要指标.在电压作用下,通过介质的电流I包含与电压同相的有功分量IR及超前电压90°的无功分量IC.此时介质的功率损耗为P=UIR=UIC·tanδ.定义tanδ=IR/IC,式中的δ为介质损失角 ...
胡文岐, 危鹏
doaj
Gaoya dianqi, 2020 随着电力体制改革的深入推进,电力企业的盈利模式将发生根本性的变化,这要求电力企业要加强资产和成本管理,提升设备采购质量,延长设备使用寿命,提高资产效益。随着中国进入高质量时代,企业在"提质增效"和"转型升级"过程中,质量意识普遍增强,对以可靠性为中心的质量技术需求将更加迫切。随着智能电网的发展和电网规模的迅速增长,及时、准确地掌握电力设备的状态面临巨大的问题和挑战,电力企业对智能电力设备的需求非常迫切。针对上述需求和目前智能电力设备应用存在的问题,结合现代控制理论、可靠性工程理论和LCC（Life ...
刘定欣, 李军浩
doaj
The study of bidirectional DC-DC converter in the DC microgrid [PDF]
, 2016 作为新能源的有效利用方式之一的直流微电网没有无功功率的损耗，不需要跟踪频率和相位，可靠性和可控性有较大程度的提高，更适合分布式能源的接入和应用。双向DC-DC变换器承担着母线与储能之间能量双向流动的重要作用。同时，它还可以作为直流微电网之间的互联元件，具有十分重要的研究价值。 本文针对全桥拓扑结构的双向DC-DC变换器展开较为深入的研究。 首先，详细分析了在移相控制方式下，双向DC-DC变换器的在降压方向和升压方向的工作原理及零电压开关（ZVS，Zerovoltageswitching）的具体过程 ...
纪承承
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Summary and Prospect of Comprehensive Evaluation Methods of Power Quality [PDF]
ObjectivesWith the continuous development of China's new power system, there is a growing integration of new energy sources such as photovoltaic and wind power into the grid.
DONG Guangde, XIAO Bai, ZHAO Xuechun
core +1 more source
Interface Issues of Inorganic Solid‐State Electrolytes in Secondary Magnesium Batteries
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Solid‐state magnesium batteries (SSMBs) have gained significant attention as promising candidates for next‐generation safe energy storage systems because of the abundance of magnesium (Mg) in the earth's crust, superior energy density, and inherent nonflammability.
Jiren Wang +9 more
wiley +1 more source
Gaoya dianqi, 2006 电能质量监测装置是智能电器监控单元的典型代表之一,介绍了一种电能质量监测装置的电磁兼容设计,并根据电磁兼容试验中发现的问题,对设计进行了改进。针对不同端口有关的电磁兼容问题进行了研究。
牛博 +4 more
doaj
Power Quality Analysis Software Based on LabVIEW and Oracle [PDF]
, 2013 针对电能质量参数数据量大,统计指标多的特点,设计了一种基于lAbVIEW与OrAClE的数据存储与分析软件。软件采用lAbVIEW数据库访问工具包dCT(dATAbASE COnnECTIVITy TOOlkIT)对数据库进行访问,结合TCP/IP通信协议,存取下位机上发的电能质量参数,利用lAbVIEW强大的数据处理能力与丰富的图形图表控件,实时显示各项电能质量参数,软件还提供了丰富的查询功能,能方便地分析各项统计指标,并通过rgT(rEPOrT gEnErATIOn TOOlkIT ...
李名, 陈伟, 陈龙
core