Results 21 to 30 of about 23,244 (255)
Forced oscillation source location in power systems using system dissipating energy
IET Smart Grid, 2019 A dissipating energy-based technique is proposed to locate the source of forced oscillations (FOs) in power systems. The network and load information is incorporated into the developed algorithm and continuously updated using supervisory control and data
Rajiv Jha, Nilanjan Senroy
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Zonal shift in the cold airmass stream of the East Asian winter monsoon
Environmental Research Letters, 2021 The East Asian winter monsoon (EAWM) exhibits long-term variations in intensity and spatial pattern, though the latter one is less understood. To investigate the long-term spatial variations of the EAWM and their possible causes, we propose a new ...
Qian Liu, Guixing Chen
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Numerical Simulation of a Pitching Airfoil Under Dynamic Stall of Low Reynolds Number Flow [PDF]
Journal of Aerospace Technology and Management, 2019 In this research, viscous, unsteady and turbulent fluid flow is simulated numerically around pitching NACA0012 airfoil in the dynamic stall area. The Navier-Stokes equations are discretized based on the finite volume method and are solved by the PIMPLE ...
Mojtaba Honarmand +3 more
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Measurement-based solution for low frequency oscillation analysis
Journal 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
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A Two-Level Forced Oscillations Source Location Method Based on Phasor and Energy Analysis
IEEE Access, 2018 Forced oscillations (FOs), which are caused by sustained cyclic disturbances, threaten the safe and stable operation of power system. The most effective way to eliminate FOs is to locate the oscillation source and take corresponding measures.
Shuang Feng +3 more
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Energies, 2020 Locating the partial discharge (PD) source is one of the most effective means to locate local defects in power cable lines. The sampling rate and the frequency-dependent characteristic of phase velocity have an obvious influence on localization accuracy ...
Xianjie Rao +4 more
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The teleconnection of extreme El Niño–Southern Oscillation (ENSO) events to the tropical North Atlantic in coupled climate models [PDF]
Weather and Climate Dynamics, 2023 El Niño–Southern Oscillation (ENSO) is a major source for teleconnections, including towards the tropical North Atlantic (TNA) region, whereby TNA sea surface temperatures (SSTs) are positively correlated with ENSO in boreal spring following an ENSO ...
J. W. Casselman +6 more
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Scientific Reports, 2023 Delay line oscillators based on photonic components, offer the potential for realization of phase noise levels up to 3 orders of magnitude lower than achievable by conventional microwave sources.
Mehedi Hasan +2 more
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The location of the source of high-frequency solar acoustic oscillations
The Astrophysical Journal, 1991 Recently Libbrecht and Jefferies et al. have reported regular peaks in the solar oscillation power spectrum extending well above 5.3 mHz, the maximum frequency of trapped acoustic modes. Kumar et al. argued that these peaks are primarily due to the interference of traveling waves which are excited due to acoustic emission from turbulent convection.
Pawan Kumar, Edward Lu
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DETERMINATION OF COORDINATES OF SEISMIC WAVE SOURCE BY AMPLITUDE METHOD OF PASSIVE LOCATION
Геодинамика и тектонофизика, 2015 The paper presents results of the mathematical synthesis of the method of passive location of a seismic wave source. The method employs measurements of regular attenuation of seismic oscillation amplitudes.
Vasily D. Syten’ky
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