Results 1 to 10 of about 1,166 (95)
基于DE-RBF 混合优化算法的微电网自适应下垂控制策略 [PDF]
全球能源互联网, 2023 孤岛微电网因线路阻抗各异，采用传统下垂控制无法实现功率按分布式电源容量比例分配，会产生电压/频率偏差。为此，提出一种基于DE-RBF混合优化算法的自适应下垂控制策略。首先，构建下垂控制的两逆变器并联微电网系统动态模型，应用差分进化 （differential evolution，DE） 算法获得多个平衡点的优化下垂控制参数。为提高系统的动态响应速度与稳定性，通过训练径向基 （radial basis function，RBF） 神经网络，对每个平衡点参数进行校正。进而，通过增加RBF神经网络的隐含层数量，
吴丽珍, 魏建平, 丁安邦, 陈伟
doaj +1 more source
Policy &Internet, Volume 15, Issue 4, Page 559-574, December 2023., 2023 Abstract Since 2019, researchers examining, archiving, and collecting extremist and terrorist materials online have increasingly been taken offline. In part a consequence of the automation of content moderation by different technology companies and national governments calling for ever quicker takedowns. Based on an online survey of peers in the field,
Aaron Y. Zelin
wiley +1 more source
Digital data sources and methods for conservation culturomics
Conservation Biology, Volume 35, Issue 2, Page 398-411, April 2021., 2021 Abstract Ongoing loss of biological diversity is primarily the result of unsustainable human behavior. Thus, the long‐term success of biodiversity conservation depends on a thorough understanding of human–nature interactions. Such interactions are ubiquitous but vary greatly in time and space and are difficult to monitor efficiently at large spatial ...
Ricardo A. Correia +12 more
wiley +1 more source
Dianci bileiqi, 2020 阻容网络理论根据避雷器实际结构和具体的设备配置建模,对避雷器传统的三相单节对称相间干扰分析模型作出了较大改进,但未总结具体建模的合理性。基于避雷器阻容网络理论,选择500 kV智能变电站三相避雷器系统建立3种阻容网络进行仿真分析。总结阻容网络仿真结果与所选择模型（导体数量）的变化规律,与监测数据结合,讨论阻容网络建模合理性。结果表明,典型500 kV智能变电站三相避雷器系统的阻容网络,避雷器需分节,需考虑相邻电压互感器及上端水平母线等影响,仿真结果才能与现场监测数据有更好的一致性 ...
王建 +5 more
doaj
水路及均压电极布置方式对MMC换流阀阀端间交直流耐压试验的影响研究
Gaoya dianqi, 2022 MMC换流阀阀端间交直流耐压试验时，换流器闭锁，电容电压控制算法未投入使用，因此，子模块的均压特性受系统阻容网络的影响。根据试验录波结果，阀塔层间子模块电压分布规律为顶层和底层高，中间层低，子模块电压先发散，后趋于平衡。经过分析得到水路及均压电极布置方式对系统阻容网络有很大的影响，是试验过程中造成层间子模块不均压的主要因素。通过搭建MMC换流阀阀端间交直流耐压试验详细仿真模型，仿真得到层间子模块电压分布规律与试验基本一致，10 s试验最大不均压度为3.9%,3 h试验最大不均压度8.9 ...
梁家豪 +7 more
doaj
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The commercialization of lithium–sulfur batteries (Li–S batteries) has been hindered by the shuttle effect of lithium polysulfides (LiPSs) and sluggish redox kinetics. In this study, we constructed a three‐dimensional hollow conductive network host material for sulfur with synergistic enhancement effects.
Jie Yang +6 more
wiley +1 more source
Sexuality, Gender &Policy, Volume 9, Issue 3, August 2026.ABSTRACT Digital communication has facilitated freedom of expression in various contexts worldwide. Digitalized communication is a form of expression that has become the norm worldwide despite cybercrime and other challenges. Communication preferences for social media determine attitudes to reporting crime.
Nomsa Ingrid Zikalala
wiley +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The development of structurally stable anodes with high capacities and long cycle lives is essential for the development of potassium–ion batteries. Conversion‐type anodes have attracted considerable attention in potassium–ion batteries (PIBs) due to their high theoretical capacities.
Jeong Ho Na +7 more
wiley +1 more source
Conservation Biology, Volume 39, Issue 6, December 2025.Abstract As nations seek to expand protected area (PA) networks to cover 30% of land and seas by 2030 (30×30), there is an urgent need for systematic conservation planning and spatial prioritization that considers the broad range of ecological and socioeconomic factors influencing the persistence of biodiversity.
Edmond Sacre +2 more
wiley +1 more source
Policy &Internet, Volume 16, Issue 4, Page 818-832, December 2024.Abstract In recent years, the pace of Internet regulation around the world has quickened, with states increasingly confident that they can and should hold major platform companies to account. New laws have been developed to address the risks of digital technologies and law‐makers have drawn on familiar regulatory principles and legacy frameworks in ...
Victoria Nash, Lisa Felton
wiley +1 more source