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Understanding Low-Frequency Oscillation in Power Systems

International Journal of Electrical Engineering and Education, 2010
This paper presents a complete overview of low-frequency oscillation phenomena in power systems. The definition of low-frequency oscillation and its classification are clearly explained. Some power system blackout incidents due to low-frequency oscillation and the lesson learned from those incidents are also reported in the paper.
Prasertwong, K., Mithulananthan, N., Thakur, D.   +2 more
exaly   +6 more sources

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A low frequency oscillator structure

2009 European Conference on Circuit Theory and Design, 2009
We propose a novel RC sinusoidal oscillator architecture suitable for very low frequency generation. The oscillator is also attractive in the sense that the lower the oscillation frequency, the lower the necessary gain required to start oscillations. Further, the proposed architecture is active-circuit-independent and can be realized in any suitable ...
Ahmed S. Elwakil, Serdar Özoguz
openaire   +1 more source

Observation of multi-scale oscillation of laminar lifted flames with low-frequency AC electric fields

Combustion and Flame, 2010
The oscillation behavior of laminar lifted flames under the influence of low-frequency AC has been investigated experimentally in coflow jets. Various oscillation modes were existed depending on jet velocity and the voltage and frequency of AC ...
S H Won, Suk Ho Chung
exaly   +2 more sources

Real-time low-frequency oscillations monitoring

Journal of Renewable and Sustainable Energy, 2021
A major concern for interconnected power grid systems is low-frequency oscillation, which limits the scalability and transmission capacity of power systems. Undamped or poorly damped oscillations will lead to undesirable conditions or even a catastrophic system blackout.
Bin Hu, Hamid Gharavi
openaire   +2 more sources

A compact, low‐frequency, memristor‐based oscillator

International Journal of Circuit Theory and Applications, 2014
SummaryA relaxation oscillator using a memristor is hereby presented. The memristor is used to substitute the function of a capacitor in an equivalent RC oscillator. The voltage across the memristor changes according to the quantity and polarity of the current passing through, thus substituting the changing voltage across a capacitor in the equivalent ...
Kyriakides, Elias, Georgiou, J., Kyriakides, Elias, Georgiou, J.   +3 more
openaire   +2 more sources

Low Frequency Rotary Traveling Wave Oscillators

2018 IEEE International Symposium on Circuits and Systems (ISCAS), 2018
A methodology is presented in order to automate the selection of a design style for low frequency operation of ultra low power rotary traveling wave oscillators (RTWOs). The methodology systemically analyzes the power dissipation profiles of design styles with two priori known resonant frequency dividers, a static and a dynamic frequency divider.
Ragh Kuttappa, Baris Taskin
openaire   +1 more source

Low-Frequency Brain Oscillations in Schizophrenia

JAMA Psychiatry, 2016
Understanding thebrainnetworks thatproduce thesymptomsof schizophrenia is a major goal of modern neuroscience. There is increasing evidence that brain function depends critically on oscillations, and ithas thereforebeenof interest todeterminewhether the oscillatorypropertiesof thebrain areabnormal in schizophrenicpatients.
openaire   +2 more sources