Results 21 to 30 of about 138,562 (166)
Dizhen xuebao, 2021 利用天津市徐庄子地震台的电磁观测数据，针对台站周边观测区域内近年来出现的风电和光伏发电设施，通过野外试验测量，从多个角度深入剖析了不同观测环境中电磁观测数据在时间和空间上的变化形态，分别总结了风力发电、光伏发电的建设和运行状态对电磁观测环境干扰的影响特征。结果显示：风力发电机组对电磁观测环境的影响明显小于光伏发电设备，可视为一个干扰点，需规范其与观测设施的距离；若要确保光伏发电设备不影响电磁观测，需要将每个系统视为一个整体，并使二者保持足够大的距离。
Yong Ma, Ning Li, Xuegong Xu, Jinmeng Bi
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Gaoya dianqi, 2023 一般认为，干式空心电抗器的噪声频谱为谐波电流各频率之间的差频、合频及每个谐波的二倍频，然后实际测试得到的噪声频谱与目前理论分析的结果并不一致。文中以一台小型的干式空心电抗器为例，对噪声测量过程中的干扰现象进行了研究，并结合电磁感应理论对干扰的来源进行了解释和分析。研究结果表明，干式空心电抗器在加载单频的激励电流时，利用传声器测得的噪声频谱中除了电流频率二倍频的噪声分量外，还会出现多个电流整数倍频率的干扰分量。其中单倍频的干扰分量来源于磁场对传声器的影响，其幅值和加载电流成正比 ...
陈硕 +4 more
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The rapid advancement of 5G communication technology has intensified electromagnetic pollution, creating an urgent demand for flexible multifunctional fabrics with efficient electromagnetic interference (EMI) shielding performance. This study proposes a novel material‐stacked construction strategy to fabricate multifunctional MXene/cellulose ...
Zong‐Kai Yan +9 more
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提高试验电压对抑制高压交流油纸绝缘套管频域介电谱测试电磁干扰影响的研究
Dianci bileiqi, 2021 笔者针对110 kV及以上电压等级高压交流油纸绝缘套管频域介电谱的现场测试,阐述了现场电磁干扰机理并提出提高试验电压等抑制电磁干扰影响的方法,研究了套管的频域介电谱特性与试验电压的相关性。换流站和变电站现场实施效果显示提高试验电压可有效抑制套管频域介电谱测试过程的电磁干扰并提高测试结果的准确性。
潘志城 +4 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Emerging as attractive alternatives for sustainable, low‐cost, and high‐performance electromagnetic interference (EMI) shielding, biomass‐derived carbon is nonetheless constrained by a limited repertoire of shielding mechanisms. Herein, a straightforward method was employed to synthesize self‐supporting Co nanoparticles embedded in porous N ...
Yingjie Xu +6 more
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The development of high‐performance electromagnetic protection materials integrating broadband absorption and effective shielding capabilities is hindered by challenges in simultaneously optimizing multiple electromagnetic properties through conventional material designs.
Changlong Du +9 more
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Carbon Material Films for Flexible and Efficient Electromagnetic Interference Shielding: A Review
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT With the rapid development of technology such as the Internet and electronic devices, electromagnetic radiation pollution has become an increasingly prominent issue, which negatively impacts both human health and the normal operation of equipment.
Yu‐Xin Chen +10 more
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Rare Metals, Volume 44, Issue 3, Page 1833-1843, March 2025.Graphical abstract AbstractThe pressing demand for ultrathin and flexible shields to counter electromagnetic interference (EMI) has sparked interest in Ti3C2Tx MXene materials due to their exceptional electrical conductivity, tunable surface chemistry, and layered structure.
Zhao‐Yang Li +5 more
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Gaoya dianqi, 2020 随着智能电网中一二次设备融合技术发展,一次设备和二次设备之间的距离大幅度减小,导致二次设备容易受到一次设备动作干扰而发生故障。文中针对真空断路器关合电容器组过程中产生的电磁干扰进行研究分析,采用高频涌流试验回路对其进行模拟,用电磁场探头以及测量设备同步采集电流波形和电磁干扰信号。利用小波变换分析了暂态电磁信号的时频特征,结果表明:电场干扰幅值最大为12.56 k V/m,主要分布在156.25～312.5 MHz和39.062 5 MHz以下两个频率范围;磁场干扰幅值最大为26.23 A/m ...
牛博 +6 more
doaj
, 2022 物理学基础研究里将万有引力和电磁相互作用统一的途径应该不止一条。一种将万有引力归结为电磁相互作用的定性的物理图像为：引力是泄露的电磁相互作用。“A原子的原子核”与“B原子里电子”之间的电磁作用，是引力的来源。假如静电库仑力符合严格的平方反比定律，则万有引力定律会对平方反比关系产生一定的偏差。这是“A原子里电子”对前述作用干扰的结果。即，“A原子里电子”运动，对“A原子的原子核”与“B原子里电子 ...
Zheng-Ling YANG
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