Results 21 to 30 of about 5,771 (125)
Gaoya dianqi, 2012 绝缘子并联间隙属于新的疏导型防雷措施,能够有效的保护绝缘子串,提高重合闸的成功率。目前,国内对并联间隙的研究主要集中在电弧的运动特性和间隙电极的形状之上,忽略了对并联间隙自身特性的研究,以及并联间隙上的电弧和绝缘子之间的关系等问题。笔者通过大量的试验研究并联间隙对绝缘子的保护特性,认为要想发挥并联间隙良好的保护特性,并联间隙两个电极之间的距离应该不大于绝缘子串结构高度的90%,而且应该和绝缘子之间有足够的距离。
顾铁利 +5 more
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Representation of obligate groundwater‐dwelling copepod diversity in European protected areas
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Groundwaters sustain diverse surface ecosystems and are populated by metazoan species, mostly invertebrates, that provide fundamental ecological functions and are often of prominent conservation value due to narrow endemism and high phylogenetic rarity.
Francesco Cerasoli +7 more
wiley +1 more source
Gaoya dianqi, 2011 针对空气间隙型浪涌保护器（surge protective device,SPD）存在的问题,在低气压条件下研究了电极材料及间隙距离对间隙型SPD保护特性的影响,研究内容包括直流电压击穿特性、电压保护水平和响应时间。实验电极分别由钨铜和石墨材料制作而成,圆形电极,直径10mm,间隙距离1～5mm,气压范围20～60Pa。研究结果显示,电极材料对保护间隙的保护特性没有影响;在pd=90Pa·mm条件下,间隙距离对保护间隙的保护特性同样没有影响。
孙伟, 姚学玲, 陈景亮
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Composite materials hold significant potential for abrasive sealing, yet composite materials used for abrasive sealing fall short in service durability under extreme environments. Here, a controllable strategy for adjusting pore structure is proposed, aiming to design a YSZ(ESP)/BN@ZrO2‐polyester coating with hybrid micron/nanometer ...
Shuang Yu +8 more
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Rechargeable aluminium‐ion batteries (RAIBs) are promising candidates for sustainable energy storage owing to their low cost, safety, and resource abundance. However, the lack of durable cathode materials restricts their development. Here, we propose a topology‐guided design strategy by synthesizing three thioether‐bridged naphthoquinone ...
Jia Qiao +8 more
wiley +1 more source
Dianci bileiqi, 2021 并联间隙、避雷器是线路防雷的重要设备,其安装结构在一定程度上短接了绝缘子的有效长度,以220 kV为例,通过试验、仿真计算分析了并联间隙、避雷器对带电作业的影响。首先通过模拟带电作业典型工况开展了间隙放电试验,获取了带避雷器、并联间隙线路带电作业间隙放电特性;然后根据带电作业绝缘配合方法,分析确定了220 kV带避雷器或并联间隙线路带电作业最小安全距离为2.1 m,比常规塔型要求高0.3 m;最后通过仿真建模计算分析了带避雷器或并联间隙线路带电作业空间的电场分布特性 ...
方玉群, 秦威南, 雷兴列, 彭勇
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Environmental pollution across water, air, and soil systems poses escalating threats to human health and ecosystem stability, driven by heavy metals, persistent organic pollutants, particulate matter (PM), bioaerosols, and toxic gases. Conventional remediation technologies often suffer from limited selectivity, insufficient efficiency, and the
Junjie Qi +6 more
wiley +1 more source
Dianci bileiqi, 1985 3.3和1.65kV РВКУ型阀式避雷器（统一设计的防护操作过电压用阀式避雷器）新系列是在全部零件统一的基础上研制的。组装避雷器的基本标准元件有火花间隙组和阀片组。间隙组由综合了转弧间隙和拉弧间隙的性能的复合式间隙组成。间隙（装置）的作用原理由全苏列宁电工研究院设计的 ...
В.П.ГИРЗЕ, 罗广能
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Graphitic carbon nitride (g‐C3N4) doped with 3d transition metals (3d‐TM@g‐C3N4) has gained attention as a noble metal‐free alternative for oxygen evolution and reduction reactions (OER/ORR). Yet the key mechanisms driving its performance remain debated, especially across different charge states.
Jing Zhang +6 more
wiley +1 more source
Gaoya dianqi, 2012 介绍了500 kV串补系统中广泛应用的火花间隙系统结构及导通原理。针对GTD强电磁干扰的工作条件重新设计其相关电路,阐述了其工作原理及特点;介绍了密封间隙的结构及导通原理,通过对密封间隙和整个火花间隙进行触发试验,结果表明,新设计的GTD装置能够可靠地将密封间隙强制击穿导通,进而使整个火花间隙系统导通。实际人工接地短路试验结果表明整个火花间隙能够可靠地强制导通。
周启文 +7 more
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