Results 61 to 70 of about 78,542 (219)
Dianci bileiqi, 2015 特高压直流同塔混压输电线路可有效解决日益增长的电力需求和输电走廊资源紧缺的矛盾,准确评估其绕击耐雷性能,对线路设计和施工具有重要参考价值。基于电气几何模型计算绕击跳闸率,考虑了导地线、大地的相互屏蔽效应、地面倾角、雷电入射角和工作电压等因素的影响,并通过算例进行了分析验证,研究了特高压直流同塔混压输电线路的绕击耐雷性能及其影响因素。同时应用该模型对800 kV直流单回线路和500 kV直流同塔双回线路的绕击耐雷性能进行了研究对比,得出了特高压直流同塔混压输电线路绕击耐雷性能的特点。结果表明:500 ...
甘艳 +4 more
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Broadband, Flexible, Skin‐Compatible Carbon Dots/Graphene Photodetectors for Wearable Applications
Advanced Functional Materials, EarlyView.Broadband, flexible photodetectors integrating nitrogen‐rich carbon dots with single‐layer graphene on plastic substrates are demonstrated. A biocompatible chitosan–glycerol electrolyte enables efficient low‐voltage gating and on‐skin operation. The devices exhibit ultraviolet‐to‐near‐infrared response, mechanical robustness under bending, and verified
Nouha Loudhaief +20 more
wiley +1 more source
±800kV/±500kV混压双回直流线路的电磁环境分析及改善研究
Gaoya dianqi, 2016 ±800 kV/±500 kV混压双回直流输电线路可解决中国日益增长的电力需求和输电走廊资源紧缺的矛盾,但目前尚无建造和运行经验,研究其电磁环境具有重要工程指导意义。文中采用解析法、CISPR和BPA经验公式法等方法,计算了两种基本塔型及相应导线布置方式下的导线和地线表面场强、地面电场和离子流密度分布、线路最小对地距离和走廊宽度、可听噪声和无线电干扰等电磁环境相关指标,分析了不同因素（导线排列方式、导线高度、线间距离等）对电磁环境的影响,并与±800 kV直流单回线路和±500 ...
李凌燕 +5 more
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Real‐Time, Label‐Free Monitoring of Cell Behavior on a Bioelectronic Scaffold
Advanced Functional Materials, EarlyView.A bioelectronic nanofibrous scaffold is introduced that supports cell growth while enabling real‐time, label‐free monitoring of cellular behavior through impedance measurements. The system correlates electrical signals with cell viability and surface coverage, offering an integrated platform for studying dynamic biological processes and advancing next ...
Dana Cohen‐Gerassi +10 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Ag+‐mediated hydrothermal crystal engineering promotes preferential [hk1]‐oriented growth of Sb2Se3 via an ultrathin MoOx interlayer, improving crystallinity and suppressing non‐radiative recombination. The optimized Ag+ treatment photocathode delivers 24.7 mA cm−2 at 0 VRHE and improved stability, revealing an ion‐modulated route to high‐performance ...
Ziying Zhang +10 more
wiley +1 more source
Gaoya dianqi, 2012 800 kV断路器是保证750 kV输变电线路安全运行的重要开关设备。笔者针对一起800 kV双断口罐式断路器的液压机构工作缸断裂事故,对断裂部位进行了强度校核计算及化学成分、显微组织、力学性能、制造工艺分析。认为生产厂家对液压工作缸进行再次超温热处理,使其产生铸态组织,导致延伸率大幅下降,是造成工作缸断裂的主要原因。
李岩, 吴国忠, 徐贤, 包艳蓉
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Gaoya dianqi, 2021 针对加装防雨降噪装置的±800 kV/6 250 A大容量干式平波电抗器温度场分布问题,依托于输送容量为10 GW特高压直流输电工程,采用流体—热力学耦合的仿真方法与试验相结合的方式,文中研究了±800 kV/6 250 A干式平波电抗器温度场分布特性。试验结果表明:一是平波电抗器温升试验与仿真结果吻合,验证了仿真模型的合理性和准确性;二是防雨降噪装置改变了电抗器上方空气的流动方向,增加了空气流动阻力,影响了电抗器的散热效果;三是800 kV/6 250 A干式平波电抗器实测热点温升为68.1 K ...
刘成柱 +5 more
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Advanced Functional Materials, EarlyView.A novel approach for the design of functional semiconductors is presented, which utilizes the excellent optoelectronic properties of layered hybrid perovskites and the possibility to introduce a molecular photoswitch as the organic spacer. This concept is successfully demonstrated on a coumarin‐based system with the possibility to change the bandgap ...
Oliver Treske +4 more
wiley +1 more source
Dianci bileiqi, 2012 介绍了用于锦屏-苏南±800 kV特高直流输电工程同里换流站低端换流变压器阀侧±204 kV/2800 A高压直流套管的技术参数、主要尺寸、结构特点,研究的关键技术,型式试验及研究性试验的项目及试验结果。套管的额定直流电压为±204 kV,额定电流为2 800 A。主绝缘（电容芯体）为胶浸纸电容式,经内外绝缘优化设计、采用优质材料,通过工艺研究及试验验证,研制出产品并通过了型式试验及研究性试验的项目。产品的主要性能指标:工频耐受电压+局放测量289 kV（r.m.s）,1 min工频耐受电压588 kV（
刘晓亮 +4 more
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Advanced Functional Materials, EarlyView.Development of a transparent, self‐sanitizing antimicrobial coating technology applicable to a wide range of materials and surfaces‐including touchscreens, transparent substrates, and metal, plastic, and glass‐regardless of pathogen type. The spray‐coated, UV‐cross‐linked imidazole‐based quaternary ammonium chloride materials provide broad‐spectrum ...
Surjith Kumaran +6 more
wiley +1 more source