Results 41 to 50 of about 19,549,251 (206)

Distributed Generation Cluster Division Method Considering Frequency Regulation Response Speed

open access: yesApplied Sciences
With the large-scale integration of distributed generation (DG), it is difficult to realize distribution network planning and operation under specific requirements using the traditional cluster division method based on a single criterion.
Yan Xu   +3 more
doaj   +1 more source

Structural model updating of acceleration frequency response function based on Kriging method

open access: yes工程科学学报, 2017
To improve the efficiency of frequency response function (FRF) model updating, the Kriging model is introduced into its optimization procedure, thus replacing the finite element model for iteration.
WANG Ju-tao   +2 more
doaj   +1 more source

Review of frequency response strategies in renewable-dominated power system grids: Market adaptations and unit commitment formulation

open access: yesScientific African
This study provides a thorough analysis of unit commitment (UC) formulations in the context of low-inertia power systems, which are increasingly prevalent as the transition to Renewable Energy Sources (RES) gain momentum.
Azeez O. Olasoji   +3 more
doaj   +1 more source

Core influence on the frequency response analysis (FRA) of power transformers through the finite element method [PDF]

open access: yes, 2015
In this paper the influence of core parameters in Frequency Response Analysis is analyzed through the equivalent circuit impedance matrix of the transformer winding; the parameters of the circuit have been computed using the Finite Element Method.
Mombello, Enrique Esteban   +9 more
core   +1 more source

Effect of measurement method on an earmuff’s frequency response

open access: yesArchives of Acoustics, 2014
Light, medium and heavy earmuffs’ amplitude frequency response was measured using transmission loss technique with a microphone placed in subject’s ear (MIRE – microphone in real ear) and on an artificial test fixture (ATF). Measurements were conducted
Rafał Młyński, Jan Żera
doaj  

Simulation of dielectric frequency response of transformer insulation system

open access: yes, 2013
Frequency domain spectroscopy has been widely used to monitor the condition of insulation system in power transformers. For a core type of transformer, a simplified XY model of a duct has been developed which allows one to examine the contribution from ...
Yu, Guo, Chen, George
core   +1 more source

Forced response prediction for industrial gas turbine blades [PDF]

open access: yes, 2006
A highly efficient aeromechanical forced response system is developed for predicting resonant forced vibration of turbomachinery blades with the capabilities of fully 3-D non-linear unsteady aerodynamics, 3-D finite element modal analysis and blade root ...
Moffatt, Stuart
core  

Power frequency magnetic field interference suppression method for online frequency response analysis of power transformers

open access: yesThe Journal of Engineering
Frequency response analysis is widely used for the offline diagnosis of winding deformations in power transformers. To apply this approach to a working transformer, the magnitude of the response current needs to be measured by using Rogowski coil sensors
Yangchun Cheng   +4 more
doaj   +1 more source

A New Testing Method for the Dielectric Response of Oil-Immersed Transformer

open access: yes, 2020
Oil-immersed transformer is one of the most important electrical equipment in power distribution and transmission systems. Dielectric response method is a well-recognized method to diagnose the insulation defect of oil-immersed transformers. However, the
Wang, Lujia   +6 more
core   +1 more source

Frequency-Domain Method for Characterization of Upconversion Luminescence Kinetics

open access: yes, 2023
The frequency-domain (FD) method provides an alternative to the commonly used time-domain (TD) approach in characterizing the luminescence kinetics of luminophores, with its own strengths, e.g., the capability to decouple multiple lifetime components ...
Lucía Labrador-Páez (9504384)   +7 more
core   +1 more source

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