Results 31 to 40 of about 17,121 (168)
Identification Method for Type-Ⅲ Industrial and Commercial Load Considering Identification Result Continuity [PDF]
, 2021 Non-intrusive load monitoring technology can guide users to arrange power consumption time reasonably, thereby reducing power consumption. Among them, due to the continuous variability of the state, the identification of continuously varying (Type-Ⅲ ...
Duan, J +5 more
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Rare Metals, EarlyView.ABSTRACT Narrowband near‐infrared (NIR) phosphor‐converted light‐emitting diodes (pc‐LEDs) featuring low full‐width at half maximum (FWHM) and high conversion efficiency are crucial for chemical content evaluation, light therapy, and bioimaging.
Chunshen Li +4 more
wiley +1 more source
Gaoya dianqi, 1992 电弧炉之类用电设备,不仅耗电量大,而且它们的有功、无功功率波动激烈,这都会严重地降低电力网的电压质量,是电网中的“公害”之一。 静止无功功率补偿装置（以下简称静补装置）,它能对负载的无功功率进行补偿 ...
徐静华
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A Multifunctional Reducing Molecular Dopant for 16% Efficient Tin Perovskite Solar Cells
Rare Metals, EarlyView.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, 2014 为合理利用无功功率以提高电网稳定性、改善配电网电能质量,笔者提出了配电网用复合型无功功率补偿装置,装置可连续动态补偿电网无功功率,同时兼具谐波治理功能。在分析其补偿原理的基础之上,根据相关试验标准研究了装置的型式试验方法,试验结果证明,装置各相性能指标满足要求,为无功补偿装置结构设计和型式试验提供了参考依据。
李罗, 雷颖, 魏玲燕, 牛帅
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Gaoya dianqi, 2020 文中研究了直流换相失败时,HVDC受端电网的电压与频率联合控制策略。直流换相失败会引发直流功率的短暂中断,导致受端电网交流电压与频率的大幅波动。因此,亟需快速的有功与无功支撑。本文提出了一种调相机-储能联合系统的控制策略,通过设置合理的控制参数来实现协调性。该策略能快速提供大量的有功无功,减小电压与频率的跌落,加速直流输电系统发生换相失败故障后的恢复过程。仿真结果表明该策略能实现有功无功输出目标在储能和调相机之间的合理分配,减小直流换相失败对受端电网的冲击。
程艳 +8 more
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Methods in Ecology and Evolution, EarlyView.Abstract DNA barcode‐based species identification has become pivotal in biodiversity research. Current barcoding‐based deep learning methods have advantages in species identification but exhibit significant limitations. By using COI barcoding alone, previous studies were unable to fully capture species identification features. Prior methods showed that
Bin Ye +4 more
wiley +1 more source
Gaoya dianqi, 2017 了解交流特高压线路的无功电压特性对电网的安全稳定运行至关重要。利用BPA软件搭建淮南—南京—上海特高压潮流等值系统,对线路的感性无功补偿度、高峰和低谷方式下无功平衡情况进行分析;计算出反映输电能力和无功平衡状态分界点的自然功率及广义自然功率;分析输电线路在不同运行方式下的沿线电压分布特性。计算结果表明:特高压输电线路的无功补偿充足,满足高峰和低谷方式下的无功需求;广义自然功率约为自然功率的28.65%100%;在5中不同运行方式下沿线电压幅值的最大值出现在泰州站和苏州站之间且电压能够控制在合理的范围内 ...
韩文轩 +4 more
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Marketing stategy on inovance low-voltage frequency converter [PDF]
, 2015 摘要 近年来，随着国民经济和工业发展的内在需求，国内自动化行业蓬勃发展，以变频器为代表的工业自动化设备越来越受到重视并广泛应用，市场孕育了像汇川、英威腾，新时达等上市企业，市场总量以GDP两倍的速度，每年保持着10%以上的增长率。 国务院2012年8月6日印发的《节能减排“十二五”规划》具体目标中明确提到：到2015年，单位工业增加值（规模以上）能耗比2010年下降21%左右，主要产品（工作量）单位能耗指标达到先进节能标准的比例大幅提高，三相异步电动机的能效从90%提升到92%-94%。同时 ...
胡波
core
Optimization Calculation Method of Injection Voltage and Series Converter Capacity for Unified Power Flow Controller [PDF]
, 2023 [Introduction] The application of UPFC (Unified Power Flow Controller) is to increase the transmission capacity of key sections, which mainly through the injection of a certain series voltage into the system and therefore divert the power flow of target ...
Jiefeng ZHONG +4 more
core +1 more source