Results 11 to 20 of about 10,690,197 (296)

Synchronization of Low-Frequency Oscillation in Power Systems

open access: yesEnergies, 2017
This paper presents the well-documented concept of synchronization of low frequency oscillation occurring in power systems and describes the characteristics of sync occurring in basic electrical circuits.
Kwan-Shik Shim   +2 more
doaj   +2 more sources

Householder-based Prony Method for Identification of Low-frequency Oscillation in Power System [PDF]

open access: yesE3S Web of Conferences, 2019
In this paper, the Prony analysis tool with the software used in the actual operation has a large error. The improved Prony method is used to identify the low-frequency oscillation mode of the power system. The traditional Prony algorithm has the problem
Zhang Simin   +3 more
doaj   +2 more sources

Online Evaluation Method for Low Frequency Oscillation Stability in a Power System Based on Improved XGboost

open access: yesEnergies, 2018
Low frequency oscillation in an interconnected power system is becoming an increasingly serious problem. It is of great practical significance to make online evaluation of actual power grid’s stability. To evaluate the stability of the power system
Wenping Hu   +5 more
doaj   +2 more sources

Improvement of the low frequency oscillation model for Hall thrusters

open access: yesAIP Advances, 2016
The low frequency oscillation of the discharge current in Hall thrusters is a major aspect of these devices that requires further study. While the existing model captures the ionization mechanism of the low frequency oscillation, it unfortunately fails ...
Chunsheng Wang, Huashan Wang
doaj   +2 more sources

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

open access: yesJournal 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   +7 more
doaj   +1 more source

A Low-Frequency Oscillator [PDF]

open access: yesReview of Scientific Instruments, 1953
A low-frequency simple-harmonic oscillator, employing a relatively new method of approach, is described. An electronic analog computer of the differential analyzer type is used to solve the differential equation of a mass-spring system. Three dc operational amplifiers perform the computation and a sinusoidal output is obtained as the solution of the ...
Howe, Robert Milton   +1 more
openaire   +2 more sources

Sub-Seasonal Prediction of Sea-Gale Processes in the Yangtze River Estuary of China

open access: yesAtmosphere, 2023
The sea-gale process (SGP) is a significant and disastrous weather event for the marine industry. However, the sub-seasonal predictability of SGP remains unclear.
Xiao Xie, Ping Liang, Qiwen Qian
doaj   +1 more source

Measurement-based solution for low frequency oscillation analysis

open access: yesJournal of Modern Power Systems and Clean Energy, 2016
This paper presents a measurement-based solution for low frequency oscillation (LFO) analysis in both real time monitoring and off-line case study. An online LFO property discrimination method is developed first, which alternately uses empirical mode ...
Chen Shen   +4 more
doaj   +1 more source

Automatic control technology of low frequency and low voltage splitting devices using wide area measurement information

open access: yesDianxin kexue, 2022
Aiming at the problems of large noise content of wide area measurement information of power grid and difficulty in controlling oscillation damping in interconnected areas of power grid, an automatic control technology of low frequency and low voltage ...
Mingliang GAO   +3 more
doaj   +2 more sources

Damping of low-frequency oscillation using renewable generation units

open access: yesEnergy Reports, 2023
Nowadays there is a significant increase the number of generation units based on renewable energy sources in electric power systems, the main goal of which is to ensure global access to affordable, reliable, sustainable and modern sources of energy ...
Ruslan A. Ufa   +2 more
doaj   +1 more source

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