Results 131 to 140 of about 990,138 (190)

分布式光伏接入对配电网接地故障影响分析及其故障辨识研究

open access: yesDianci bileiqi
大量的分布式光伏接入改变了传统配电网结构和潮流,使配电网接地故障特征发生改变。通过分析光伏并网容量、位置、光伏出力波动性及并网高次谐波对接地故障的零序电压的影响,发现对比光伏接入前,零序电压的各类时频域特征受到了不同程度的影响,甚至出现了部分接地故障时频域特征混淆的问题,造成故障辨识难度加大。对此,本文提出基于零序电压的VMD-MPE-CNN接地故障辨识算法。首先,采用VMD-MPE算法对零序电压信号进行分解,并计算本征模分量的多尺度排列熵得到故障特征矩阵。然后 ...
龙国华   +5 more
doaj  

[Multi-view signal integration via manifold learning for sleep stage classification]. [PDF]

open access: yesSheng Wu Yi Xue Gong Cheng Xue Za Zhi
Tong W, Lin X, Wu X, Li T, Wu Q.
europepmc   +1 more source

[Theoretical system of brain-computer interface for basic research]. [PDF]

open access: yesSheng Wu Yi Xue Gong Cheng Xue Za Zhi
Fu Y   +7 more
europepmc   +1 more source

[Advances on Postoperative Recurrence Risk Prediction in Non-small Cell Lung Cancer]. [PDF]

open access: yesZhongguo Fei Ai Za Zhi
Zhang S, Yang H, Huang Z, Xie B.
europepmc   +1 more source

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