Results 1 to 10 of about 13,045 (261)

A Comprehensive Method to Mitigate Forced Oscillations in Large Interconnected Power Grids

open access: yesIEEE Access, 2021
Multiple severe forced oscillation events have recently been observed across the North American interconnections and around the world. These forced oscillations have caused power swings, limited power transfer capability, damaged equipment, and persisted
Lin Zhu, Chengwen Zhang, Yi Zhao
exaly   +3 more sources

Survey on forced oscillations in power system

open access: yesJournal of Modern Power Systems and Clean Energy, 2017
The oscillations in a power system can be categorized into free oscillations and forced oscillations. Many algorithms have been developed to estimate the modes of free oscillations in a power system.
Mohammadreza GHORBANIPARVAR
exaly   +3 more sources

Isolation and Suppression of Forced Oscillations Through Wind Farms Under Grid Following and Grid Forming Control

open access: yesIEEE Access, 2021
Forced Oscillations can occur even for a power system with good damping performance. With increasing high penetration of renewable energy generation towards 100% renewable generation in the power grid, exploitation of future control potential from
Xianxian Zhao, Ying Xue
exaly   +3 more sources

Spatial forced oscillations of axisymmetric inhomogeneous systems [PDF]

open access: yesE3S Web of Conferences, 2020
The aim of this paper is to develop an adequate mathematical model, methods and algorithms for solving three-dimensional problems for axisymmetric spatial inhomogeneous viscoelastic systems (shells, foundations and bases) and to assess the dynamics of ...
Mirsaidov Mirziyod   +2 more
doaj   +1 more source

Resonance Surfaces for Forced Oscillators [PDF]

open access: yesExperimental Mathematics, 1994
The study of resonances in systemssuch as periodically forced oscillators has traditionally focused on understanding the regions in the parameter plane where these resonances occur. Resonance regions can also be viewed as projections to the parameter plane of resonance surfaces in the four-dimensional Cartesian product of the state space with the ...
McGehee, Richard P., Peckham, Bruce B.
openaire   +2 more sources

Extended Geometric Feature Extraction Process for Detecting Multiple Frequency Oscillations in KEPCO System

open access: yesIEEE Access, 2021
In this study, a new algorithm dealing with time-varying modes for determining and tracing multiple frequency oscillations in power systems is proposed.
Hwanhee Cho   +3 more
doaj   +1 more source

Simulation of forced vibration of a wedge pair under the impact of variable force [PDF]

open access: yesE3S Web of Conferences, 2023
The forced oscillations of a wedge pair under the effect of a variable force are investigated in the article. The general solution to the differential equation of forced oscillations of a wedge pair is chosen in the form depending on some unknown ...
Khudjaev Mukhiddin   +3 more
doaj   +1 more source

An Increase in the Energy Efficiency of Axial Turbines by Ensuring Vibration Reliability of Blade Milling

open access: yesEnergies, 2023
Ensuring the vibration reliability of power equipment is one of the fundamental problems in modern power machinery. This problem has become more critical due to a permanent increase in the machining performance of high-speed milling of axial turbine ...
Ivan Pavlenko   +10 more
doaj   +1 more source

Forced Symmetric Oscillations

open access: yesBulletin of the Belgian Mathematical Society - Simon Stevin, 2007
The authors study an interesting problem involving periodic solutions having a symmetry induced by an orthogonal matrix \(A\) for which there is an integer \(p\) such that \(A^p\) is the identity. More precisely, given \(T>0\), they look for solutions \(x\) satisfying the relation \(x(t+T)=A x(t)\), for every \(t\). These solutions are \(pT\)-periodic.
Feckan, M., Ma, R., Thompson, B.
openaire   +5 more sources

THE EXCITATION OF THE WHISPERING GALLERY MODES IN THE SHIELDED DIELECTRIC RESONATORS BY SLOT-LINE [PDF]

open access: yesРадиофизика и электроника, 2015
The spectral and energy characteristics of the shielded halfspherical resonator at the forced oscillations mode are investigated experimentally at using of the slot-line.
A. E. Kogut   +3 more
doaj   +1 more source

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