Results 21 to 30 of about 7,701 (119)
Gaoya dianqi, 2021 电缆作为高效、高可靠性的输电、供电方式,随着其应用范围的扩大,在实际运行中存在的问题也越发突出。文中就高速铁路牵引电流在电缆金属护套中产生的感应电压进行了分析计算,首先介绍了接触网计算理论,包括静电感应电压计算、电磁感应电压计算以及耦合感应电压计算。其次利用CDEGS软件对牵引电流在电力贯通电缆金属护套中产生的感应电压进行了仿真分析。最后根据计算结果说明在进行高速铁路电力贯通电缆线路设计、维护时,应充分考虑牵引电流对电力贯通电缆的影响,并采取措施把危害降低到最低程度。
牛金平
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A Multifunctional Reducing Molecular Dopant for 16% Efficient Tin Perovskite Solar Cells
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Although lead‐based photovoltaics have seen remarkable progress, tin‐based perovskite solar cells (Sn‐PSCs) continue to face challenges due to their limited power conversion efficiency and insufficient operational stability. The primary cause of this performance gap is the susceptibility of Sn2+ to oxidation, which promotes rapid defect ...
Xianyong Zhou +12 more
wiley +1 more source
Gaoya dianqi, 2018 同塔多回超/特高压输电线路因其相间距和回间距小而存在较大的感应电压、电流,直接影响线路的检修、运行和接地开关设备的选型。为此,文中以兰州东至乾县的750 kV同塔双回输电线路为例,利用ATP/EMPT电磁暂态仿真软件搭建同塔双回输电线路模型,分析了两回线路之间的水平间距、运行线路长度、地线高度、土壤电阻率以及运行电流对检修线路上产生的感应电压和感应电流的影响,给出了各种典型工况下流过检修人员的人体电流大小。结果表明:检修线路上产生的感应电压、电流与水平间距基本成反比例关系 ...
史志强 +6 more
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT With the continuous advancement of materials science and technology, the rare metal gallium has increasingly emerged as a promising alternative to the toxic metal mercury. Although existing research has predominantly focused on the high electrical conductivity and excellent deformability of liquid metal (LM), its intrinsic fluidic property ...
Feifan Guo +6 more
wiley +1 more source
Gaoya dianqi, 2006 概括了接地开关开合感应电流的运行工况及同杆双回线路电磁感应与静电感应的产生机理;还对相关的国际、国内标准中对接地开关切合感应电流的试验方法和参数进行了归纳;介绍了中国接地开关开合感应电流的应用现状和产品情况;提出了应重视接地开关开合感应电流的必要性,并按计算结果合理地选择接地开关。
郭贤珊
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Regulating negative parameters of metacomposites is mainly limited by their unclear mechanisms, which affects their practical applications in new sensing, communication, electromagnetic (EM) protection and other fields. This work proposes a dual‐functional competitive design strategy based on the waste corncob‐derived carbon/polyaniline ...
Qiuyun Yang +4 more
wiley +1 more source
Gaoya dianqi, 2013 同塔双回输电线路架空地线逐基接地时,架空地线的感应电流和电能损耗是值得关注的问题,目前关于架空地线损耗的定量研究较少。通过对广东某220 kV同塔双回输电线路架空地线感应电流进行了现场实测,使用ATP-EMTP程序对该线路感应电流进行仿真计算,实测值与计算值吻合较好。计算讨论了同塔双回架空线路导线相序排列方式、线路电流大小和线路电流不平衡度对架空地线感应电流和电能损耗的影响。结果表明,架空地线感应电流和线路电流变化呈线性关系,地线电能损耗与线路电流增大呈平方关系 ...
王宇 +5 more
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500/±800kV交直流同塔混压输电线路对并行油气管道的电磁影响分析
Dianci bileiqi, 2021 为研究交直流混压输电线路对平行敷设油气管道的电磁影响,以500/±800 kV交直流混压同塔架空线路与输油输气管道并列运行为背景,利用电磁暂态仿真软件ATP建立输电线路与油气管道等效时域模型,计算了无限长、有限长管道感应电压,有限长管道的交流电流密度,并分析了交流线路、直流线路对管道感应电压的影响程度。结果表明:感应电压主要由交流输电线路引起;无限长管道与输电线路并列运行部分的感应电压未超过职业人员人体安全电压限值;当平行油气管道两端绝缘悬空时,其感应电压最高可达452.88 V ...
谷泓杰 +4 more
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Moist‐electric generators (MEGs) harness energy from ubiquitous ambient humidity, which has emerged as a promising way to collect energy irrespective of location and time. This study presents a high‐performance MEG employing a bilayer Janus nanofiber membrane: a hydrophilic layer (lithium chloride/citric acid/polyvinyl alcohol) for enhanced ...
Peng Chen +7 more
wiley +1 more source
A Mini Review of Scientific Designs of Dynamic Responsive Fluids in Battery Technologies
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Dynamic responsive fluids are emerging as transformative elements in the evolution of battery technologies, marking a pivotal shift from static passive designs toward systems that actively sense and adapt to their operating environments. By integrating dynamic responsive fluids, batteries can interact with both internal and external stimuli in
Xiu‐Zhen Yang +11 more
wiley +1 more source