Results 31 to 40 of about 382,328 (306)

Fast frequency response computation for Rayleigh damping [PDF]

open access: yesInternational Journal for Numerical Methods in Engineering, 2007
AbstractWe present a model reduction Lanczos method for the computation of frequency response functions of Rayleigh damping problems. The connection with modal extraction and modal superposition is made. The usual model reduction methods require complex arithmetic. With the proposed method, complex arithmetic is only used for the reduced problem.
openaire   +1 more source

Adaptive Synthetic Inertia Control Framework for Distributed Energy Resources in Low-Inertia Microgrid

open access: yesIEEE Access, 2022
Bulk integration of Distributed Energy Resources (DERs) into the power grids reduces the system’s inherent inertial response.The reduced inertial response causes a high Rate-of-Change-of-Frequency (RoCoF) and poses formidable operational ...
Sumit Nema   +2 more
doaj   +1 more source

Torsional oscillation damping in wind turbines with virtual synchronous machine‐based frequency response

open access: yesWind Energy, 2022
In the quest of improving the frequency response capability of wind turbines, control solutions trying to emulate synchronous machines have been proposed.
Liang Lu   +2 more
doaj   +1 more source

Adaptive Fast Frequency Response for Power Electronic Connected Energy Sources [PDF]

open access: yes, 2019
Future frequency control methods will be required to operate in faster timeframes than traditional forms of frequency control. Key to providing fast frequency response within low inertia systems will be power electronic (PE) interfaced energy sources ...
Preece, Robin; id_orcid   +5 more
core   +1 more source

A PLL-Free Grid-Forming Control With Decoupled Functionalities for High-Power Transmission System Applications

open access: yesIEEE Access, 2020
This paper proposes a grid-forming control strategy with a generic implementation approach to meet the transmission system requirements asking for the massive integration of power electronic devices into the power systems.
Taoufik Qoria   +4 more
doaj   +1 more source

Analysis of the dynamic responses of SOA wavelength converters using linear frequency resolved gating technique [PDF]

open access: yes, 2008
This letter demonstrates the applicability of the linear frequency resolved optical gating technique for the complete characterization of the fast dynamic response of semiconductor optical amplifiers (SOAs) when operating as wavelength converters.
Perez-Pardo, A.   +4 more
core   +1 more source

A unified framework for co-optimization of PFR and FFR reserves using linearized tri-criteria frequency constraints

open access: yesInternational Journal of Electrical Power & Energy Systems
The increasing penetration of inverter-based resources reduces system inertia and heightens concerns about frequency stability. This paper proposes a systematic methodology for jointly optimizing primary frequency response (PFR) and fast frequency ...
Jongin Kim   +2 more
doaj   +1 more source

Modeling and Optimal Tuning of Hybrid ESS Supporting Fast Active Power Regulation of Fully Decoupled Wind Power Generators

open access: yesIEEE Access, 2021
The frequency stability of the power system is challenged by the high penetration of power electronic interfaced renewable energy sources (RES). This paper investigates the improvements of the frequency response of fully decoupled wind power generators ...
Chenrui Zhang   +4 more
doaj   +1 more source

Performance-Aware Control of Modular Batteries for Fast Frequency Response

open access: yesIEEE Transactions on Sustainable Energy
Modular batteries can be aggregated to deliver frequency regulation services for power grids. Although utilizing the idle capacity of battery modules is financially attractive, it remains challenging to consider the heterogeneous module-level characteristics such as dynamic operational efficiencies and battery degradation.
Yutong He, Guangchun Ruan, Haiwang Zhong
openaire   +2 more sources

A new approach to understanding the frequency response of mineral oil [PDF]

open access: yes, 2014
Dielectric spectroscopy is non-invasive diagnostic method and can give information about dipole relaxation, electrical conduction and structure of molecules.
Hao, Miao   +9 more
core   +1 more source

Home - About - Disclaimer - Privacy