Results 61 to 70 of about 73,888 (163)

Risk Prediction Method of Low Frequency Oscillation in Maintenance Power Network Based on Long Short Term Memory Neural Network

发电技术
With the expansion of power grid scale and the increase of power components, the maintenance methods of power system become more and more complex. It is difficult to evaluate the low-frequency oscillation risk of power grid under massive maintenance only
FU Hongjun, ZHU Shaoxuan, WANG Buhua, XIE Yan, XIONG Haoqing, TANG Xiaojun, DU Xiaoyong, LI Chenghao, LI Xiaomeng   +8 more
doaj   +1 more source

Low Frequency Oscillation Observed in the Ionosphere Around the Substorm Onsets

Geophysical Research Letters
Three substorm events in which Defense Meteorological Satellite Program (DMSP) spacecraft are geomagnetically co‐located with substorm onset locations in IMAGE far ultraviolet auroral images are analyzed.
Simon Wing, Jay R. Johnson, Elmer C. Rivera, Arthur J. Hull, Peter Damiano   +4 more
doaj   +1 more source

A Low-Frequency Oscillation Identification Method for Power System Based on Adaptive Generalized S-Transform with Bat Algorithm

Journal of Electrical and Computer Engineering
The complexity of the interconnected grid and the continuous increase of new energy sources have led to an acute problem with low-frequency oscillation (LFO) in power system.
Miao Yu, Jingjing Wei, Shuoshuo Tian, Jianqun Sun, Yixiao Wu, Shouzhi Zhang, Jingxuan Hu   +6 more
doaj   +1 more source

Impact of the Frequency Support Provided by Grid-Forming DFIG-Based Wind Turbine on Power System Ultra-Low Frequency Oscillation

IEEE Open Access Journal of Power and Energy
Ancillary frequency controls of wind turbines (WTs) bridge the dynamic interplay between turbine mechanics and the electrical grid, enabling WTs to influence low frequency range dynamics in power systems.
Dong Wang, Jun Tian, Yunhui Huang, Wanning Zheng, Li Sun, Keliang Zhou   +5 more
doaj   +1 more source

Reduced-order Modeling and Control Parameter Design of High-Frequency Oscillation in Low-Voltage DC System

Zhongguo dianli
The interaction between voltage-source converters, DC lines and constant power loads (CPLs) leads to high-frequency oscillation instability in low-voltage DC systems.
Xiao LIU, Chunfa DONG, Hanbing QU, Guangyuan YU, Shancheng SU   +4 more
doaj   +1 more source

Denoising of neuronal signal from mixed systemic low-frequency oscillation using peripheral measurement as noise regressor in near-infrared imaging. [PDF]

Neurophotonics, 2019
Sutoko S, Chan YL, Obata A, Sato H, Maki A, Numata T, Funane T, Atsumori H, Kiguchi M, Tang TB, Li Y, Frederick BD, Tong Y.   +12 more
europepmc   +1 more source

Study on Low-Frequency Oscillation in Train-Traction Network Coupling System Based on Impedance Model

机车电传动, 2017
The low-frequency oscillation phenomenon had been frequently occurred in China electrified railways, which caused the traction locked of the train and the protection tripped of power supply system as well as other accidents.
TAO Yan
doaj  

The low-frequency BOLD signal oscillation response in the insular associated to immediate analgesia of ankle acupuncture in patients with chronic low back pain

Journal of Pain Research, 2019
Anfeng Xiang,1,* Yang Yu,2,* Xize Jia,3,4 Huibin Ma,5,6 Hui Liu,1 Yu Zhang,1 Jun Rong,7,* Sheng Liu1,* 1School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China; 2Department of Psychiatry, the ...
Xiang A, Yu Y, Jia X, Ma H, Liu H, Zhang Y, Rong J, Liu S   +7 more
doaj  

Measurement and Analysis of Stick-Slip and High-Frequency Torsional Coupled Oscillations of Drill String

Shiyou jixie
The self-excited torsional oscillation of the drilling system can reduce the contact force between the bit and the formation or the relative velocity of the cutting force.To mitigate the impact of this mechanism,the torsional oscillation of the drill ...
Li Yumei, Deng Yanglin, Zhang Tao, Yu Liwei, Liu Ming   +4 more
doaj  

A Low-Frequency Oscillation Suppression Method for Regional Interconnected Power Systems with High-Permeability Wind Power. [PDF]

Entropy (Basel)
Hu Y, Luo J, Yan K, Wang T, Zeng Q, Huang T.   +5 more
europepmc   +1 more source