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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
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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
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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
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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
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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
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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
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Conservation Biology, Volume 38, Issue 6, December 2024.Abstract Biodiversity research is essential for addressing the global biodiversity crisis, necessitating diverse participation and perspectives of researchers from a wide range of backgrounds. However, conservation faces a significant inclusivity problem because local expertise from biodiversity‐rich but economically disadvantaged regions is often ...
Jose Valdez +8 more
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Dianci bileiqi, 2013 针对高压金属氧化物避雷器全电流测量存在的相间干扰问题,提出了避雷器的阻容网络模型,实现了避雷器阻性电流的准确计算。对高压避雷器进行精细化的三维建模,应用有限元法计算不考虑相间干扰和考虑相间干扰时避雷器各部分间的自电容和互电容、电阻片本体的电容。在EMTP-ATP中建立相应的避雷器阻容网络电路仿真模型,通过仿真计算得到避雷器的全电流、阻性电流和相角差。对某500kV变电站中500kV避雷器的全电流、相角差进行了仿真计算和测量,证实了该方法的正确性和有效性。利用阻容网络的方法可以有效滤除避雷器的相间干扰 ...
李金亮, 阮江军, 杜志叶, 柳杨
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Guangtongxin yanjiu, 2009 传送网络正由传统光网络向智能光网络演进,文章提出了"广义全保护的动态自动交换光网络（ASON）"的概念,该网络可满足无阻塞的动态业务提供和对于任何网络失效的完全可生存性。文章还讨论了满足如上要求的数学算法模型,阐述了该网络的容量规划问题。
阎阔, 张鹏
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Guangtongxin yanjiu, 2003 文章分析了多波长光交换在无光缓存条件下节点的阻塞性能,也分析了不同交换网络规模下多链路共享的阻塞性能,提出了加权偏转交换方式,利用网络的空闲交换容量,疏导业务负荷,以进一步降低阻塞率.
张劲松, 曹明翠, 罗风光
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