Results 21 to 30 of about 8,976 (142)
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT CoP has become a research hotspot for supercapacitor electrode materials because of its considerable theoretical capacitance and metalloid nature, but its commercial application remains hampered by structural instability and sluggish ion kinetics.
Gaoliang Wang +8 more
wiley +1 more source
Gaoya dianqi, 2011 1000kV电压互感器是实现特高压电网电能计量及电网保护的关键设备,中国特高压工程所采用的1000kV电压互感器均为自主研制,如用于敞开式变电站的柱式电容式电压互感器,用于GIS站的罐式电容式电压互感器、罐式电磁式电压互感器和电子式电压互感器等。为提高特高压电压互感器技术水平,总结研究经验,笔者介绍了适用于特高压敞开式变电站和特高压全封闭气体绝缘变电站（GIS）的1000kV电压互感器类型及原理,描述了中国特高压工程中1000kV电压互感器样机研制进展 ...
李璿, 王晓琪, 余春雨, 吴士普
doaj
Research on New Type of 252kV GIS Design Concept and Key Technologies [PDF]
, 2013 随着社会经济的繁荣进步，用电量需求的不断增长，城市变电站的新建和扩容需求日益强烈。目前国内已有的252kV气体绝缘金属封闭开关设备（GasInsulatedSwitchgear，简称GIS)由于占地面积大，SF6气体使用量过多，内部电场复杂。为了减少在高压开关设备中用于灭弧和绝缘的SF6这种温室气体的用量，对新一代的252kVGIS进行优化处理势在必行。GIS设备的小型化、易操作、智能化、高可靠性、制造和运行低成本已成为一种发展趋势。本文在已有的理论和实践的基础上，对GIS的技术发展进行了研究和探讨 ...
胡辉
core
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Early detection of thermal runaway (TR) is essential for lithium‐ion battery (LIB) safety, as unchecked TR risks catastrophic failures in energy storage systems. Gas‐based sensing offers a faster and more direct approach by detecting decomposition products at the molecular level.
Tianshui Liang +9 more
wiley +1 more source
Gaoya dianqi, 2006 由可调直流高压电源、放电检测器、控制器、触发器等构成高压放电检测仪,调节直流高压电源给储能器充电,当高压开关管在加高电压和等待工作过程中发生自击穿或受到高压脉冲触发导通时,放电检测器检测出开关管高压放电信号使放电指示和计数器工作。所研制的触发器检测开关管和高压放电检测仪,能确保开关管的高压放电不误检和漏检。
米伦
doaj
Optimum Design of Die Casting Die for Aluminum Alloy Microscope Arm [PDF]
, 2008 针对L形窄长铝合金显微镜立臂,安装孔多,位置精度高和要求外观表面一次成形不再后续加工等特点,采用CAE模拟分析技术,优化压铸工艺及模具结构,实现低成本制造模具,小吨位压铸机上安装大尺寸模具。并解决了试模中出现的局部裂纹、表面流痕和抽芯过程中铸件易翻转等问题。经批量生产验证,该模具工作稳定可靠,铸件质量达到要求。CAE analysis was applied for optimizing the die casting process & die structure to meet the ...
刘亚丹 +4 more
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Developing efficient and sustainable energy conversion technologies is crucial for addressing the global energy and environmental challenges. As a promising clean energy conversion strategy, the electrocatalytic methanol oxidation coupled with cathodic hydrogen production provides a pivotal path to solve the above problems.
Tao Chen +4 more
wiley +1 more source
Gaoya dianqi, 2017 为了提高特高压电容式电压互感器的瞬态性能,分析其在较宽频域内的分压特性,以某公司生产的1 000 kV特高压电容分压器为实验对象,进行了特高压电容分压器阻抗的测量,建立了特高压电容分压器的宽频等效电路模型。首先,测量特高压电容分压器的阻抗;其次,基于测量得到的数据结合矢量匹配法和电路综合理论,建立了特高压电容分压器的宽频等效电路模型,并利用模式搜索算法对等效电路进行无源修正;最后,利用所建立的模型,分析特高压电容分压器在不同频率下的分压特性,为合理设置均压装置以及改善特高压的制造工艺提供理论依据。
王平, 张广勇, 李慧奇, 李璿
doaj
, 2018 为减少电力系统中断路器投切开关的分闸燃弧和合闸涌流,设计了一种永磁机构断路器的选相分合闸控制系统.系统通过真空继电器的二级驱动方式保证了机械动作时间可控且离散性小,解决了单级接触器驱动方式的机械动作时间离散性大和单级晶闸管驱动方式的驱动电路复杂性的问题.系统以STM32单片机为控制核心,通过电流突变捕捉时刻算法准确捕捉到分合闸动作完成时刻,进而计算出上一次的分合闸机械动作过程时间,预测出下一次的分合闸机械动作时刻,实现了控制系统根据设定的分合闸相角对断路器准确地进行分相投切控制的功能 ...
李钷 +4 more
core
Detection Algorithm for Insulators and Foreign Objects on Transmission Lines Based on Unmanned Aerial Vehicle Inspection [PDF]
ObjectivesTraditional power grid inspection methods suffer from high labor intensity and low efficiency. Taking Shandong Golden Power Grid as the research object, this study proposes an inspection algorithm using unmanned aerial vehicle (UAV) based on ...
MENG Xiangzhong +4 more
core +1 more source