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计及静态安全约束的电-气耦合综合能源系统供电能力评估方法 [PDF]
全球能源互联网, 2019 供电能力反映了电力系统所能承载的最大负荷，即在给定的发电机运行方式下，模拟系统中负荷的增长模式，不断检验系统的安全约束条件，从而确定系统所能供给的最大供电负荷。然而，随着以天然气为一次能源的燃气发电机发电比重的显著提升，传统供电能力评估方法并没有考虑燃气发电机的一次能源供应以及天然气系统的运行约束，显然并不恰当。为此，提出了基于连续多能流的电-气耦合综合能源系统供电能力评估方法。首先，建立了电-气耦合综合能源系统的多能流模型；接着引入负荷增长参数，提出连续多能流方法，通过预测-校正追踪多能流解曲线；最后，
骆柏锋 +6 more
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Gaoya dianqi, 2023 研究了重复脉冲电压下油纸的局部放电损伤对其电气性能的影响。分别采用材料分析手段和电气测量手段，分析了脉冲电压放电过程中油纸的形貌、产物和微观结构等损伤特性，以及电导、极化、损耗和击穿等电气性能；对比分析了油纸在洁净处理前后的微观结构及产物对其电气性能的影响。结果表明：重复脉冲电压下，油纸放电损伤后的产物主要为醛类或羧酸类物质，损伤产物在绝缘表面呈辐射状分布且引导电树枝走向；脉冲电压边沿突变(du/dt→0)产生的瞬时冲击电应力加剧了纤维素分子碎片的形成 ...
严家明, 周一恒, 陈奎, 董海波
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Dianci bileiqi, 2023 长时间运行的GIS设备内部SF6气体的绝缘性能受环境温度及内部气压的影响，为了分析环境温度、气压对SF6气体绝缘性能的影响规律，基于两项近似的Boltzmann方程，求解了不同气压和温度下SF6气体的电子输运参数，并分析其绝缘性能的变化规律。仿真计算结果表明：温度300 K、0.1 MPa～0.6 MPa气压条件下，随着气压的增大，SF6气体的约化电离系数增大，约化吸附系数略微增大，计算得到约化有效电离系数增大，因此临界击穿场强增大，绝缘性能越好；在气压0.1 MPa、温度250 K、300 K、340
尹凯强 +5 more
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Because of superior transportability and high energy capacity, methanol is regarded as a potential hydrogen carrier. Photocatalytic methanol dehydrogenation offers a sustainable and cost‐effective method for releasing hydrogen. Conventional photocatalysts face challenging obstacles, including the low catalytic efficiency and rapid ...
Rundong Chen +9 more
wiley +1 more source
Dianci bileiqi, 2021 研究了不同NiO含量对ZnO基压敏电阻微观结构、相组成电学性能的影响。结果表明,掺杂合适含量的NiO能够有效的改善ZnO基压敏电阻的电气性能,这可被归因为NiO的掺杂能够调整ZnO的晶粒取向,从而使ZnO压敏陶瓷形成了更加均一的显微结构。CE5样品（NiO摩尔分数为1.55%）具有优秀的综合电气性能,其电位梯度为184.00 V/mm,非线性系数α为72.7,漏电流为0.45μA,在20 kA和30 kA下的压比分别为2.20和2.38。此外,在20组20 kA及2组30 kA脉冲浪涌电流冲击后 ...
王曼玉 +9 more
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Mechanoluminescent Mixed‐Anion Borate Sr2B5O9Cl:Eu for Dynamic Anticounterfeiting
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Mechanoluminescence (ML)—the emission of light in response to mechanical stimuli—offers a direct and visually intuitive route for transducing mechanical information into optical signals. Herein, we report a mixed‐anion strategy to prepare mixed‐anion borate Sr2B5O9Cl:Eu phosphors through a facile, low‐temperature, and ambient‐atmosphere solid ...
Yuhong Han +7 more
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Gaoya dianqi, 2020 为提高材料耐电痕性能,研究环氧绝缘材料电气及机械性能对电痕特性的影响,建立环氧绝缘材料电气、机械性能与电痕破坏的关系,文中制备3种掺杂不同含量微米二氧化硅（SiO2）的环氧树脂复合材料,按IEC 60587—1984试验规程进行电痕试验并测试环氧树脂表面接触角,体积电阻率等电气性能及冲击强度等机械性能。结果表明:随着微米掺杂含量提高,环氧材料耐电痕特性变差,体积电阻率及弯曲强度先减小后增大,表面电阻率先增大后减小,介电强度减小,冲击强度及拉伸强度增大 ...
杨玲 +6 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Engineering of the catalyst interface and modulation of transition–metal d–band play critical roles in the electrocatalytic hydrogen evolution reaction (HER). Herein, a synthetic strategy is developed to fabricate nitrogen‐doped carbon nanotubes (N–CNTs)–supported Ni3Se4–CeO2 heterojunction catalysts through a facile chemical vapor deposition (
Zhiqiang Sun +10 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Improving catalytic activity for volatile organic compounds (VOCs) oxidation and enhancing water‐tolerance stability remain challenging in practical applications. Herein, a composite catalyst integrating Pt/CoOx‐NiOx mesoporous nanorods (MNRs) with a phenyltriethoxysilane (PhTES)‐modified surface was fabricated via a facile route for toluene ...
Jiaqin He +13 more
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Kinetic‐Controlled Growth of Iron Chalcogenide Nanosheets Featuring Besnus Transition
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Two‐dimensional (2D) Fe‐based nanosheets have sparked wide attention owing to exotic magnetism, superconductivity and topological phases. However, the synthesis of 2D FemXn (X = Te/Se/S, m, n: integer), typically in a non‐stoichiometric ratio, remains challenging because of narrow thermodynamic windows.
Hongmei Zhang +11 more
wiley +1 more source