Results 11 to 20 of about 346,351 (271)

Imposing fair penalty to the harmonic sources based on the measurement data

open access: yesIET Generation, Transmission & Distribution, 2021
Improving network power quality through harmonic reduction requires recognition of Harmonic Sources (HSs) to drive them to compensate their harmonics. This paper proposes a new method for equitable distribution of the Harmonic Compensation Cost of the ...
Mahdi Tadayon   +3 more
doaj   +1 more source

Measurement-Based Distribution Grid Harmonic Impedance Models and Their Uncertainties

open access: yesEnergies, 2020
Aggregated Norton’s equivalent models, with parallel impedance and current injection at different harmonic frequencies are used to model the distribution grid in harmonic studies.
Ravi Shankar Singh   +2 more
doaj   +1 more source

Evaluation of Harmonic Contributions for Multi Harmonic Sources System Based on Mixed Entropy Screening and an Improved Independent Component Analysis Method

open access: yesEntropy, 2020
Evaluating the harmonic contributions of each nonlinear customer is important for harmonic mitigation in a power system with diverse and complex harmonic sources.
Jinshuai Zhao   +3 more
doaj   +1 more source

Harmonic contribution determination based on change‐point monitoring and shape context algorithm

open access: yesIET Generation, Transmission & Distribution, 2022
In the power system, the harmonic is one of the important concerns of power quality, which has a significant impact on the safe operation of power grids and the energy efficiency for users.
Hang Liu   +5 more
doaj   +1 more source

A Method for Utility Harmonic Impedance Estimation Based on Constrained Complex Independent Component Analysis

open access: yesEnergies, 2018
Utility harmonic impedance is an important parameter for harmonic mitigation. In this paper, a method for utility harmonic impedance estimation method based on constrained independent component analysis is proposed.
Xianyong Xiao   +4 more
doaj   +1 more source

Assessing Time-Varying Harmonic Interactions in a Wind Park

open access: yesIEEE Access, 2021
The harmonic interaction mechanism in a wind park is examined in this paper. The paper investigates the feasibility of a solution to the yet challenging harmonic contribution estimation from multiple sources in a wind park with limited available ...
Vineetha Ravindran   +3 more
doaj   +1 more source

Interpretation of partial discharge activity in the presence of harmonics [PDF]

open access: yes, 2010
Recent work has identified that circumstances of equipment operation can radically change condition monitoring data. This contribution investigates the significance of considering circumstance monitoring on the diagnostic interpretation of such condition
Bahadoorsingh, S.   +4 more
core   +1 more source

Topological asymmetry in the damping-pairing contribution of electron-boson scattering [PDF]

open access: yes, 1997
We make a harmonic analysis of the pairing and damping contribution of a finite $k$ range isotropic electron-phonon (or other boson) scattering in an anisotropic two-dimensional electronic system.
G Varelogiannis   +3 more
core   +1 more source

Second-Harmonic Scattering as a Probe of Structural Correlations in Liquids [PDF]

open access: yes, 2016
Second-harmonic scattering experiments of water and other bulk molecular liquids have long been assumed to be insensitive to interactions between the molecules.
Ceriotti, Michele   +4 more
core   +3 more sources

An Improved Power Quality Evaluation for LED Lamp Based on G1-Entropy Method

open access: yesIEEE Access, 2021
Nowadays, light emitting diode (LED) lamps have been widely utilized for lighting system due to its low-energy consumption. The harmonic emission standard is ignored by most of the manufacturers, high harmonic current will increase harmonic injection and
Jiaming Dou   +4 more
doaj   +1 more source

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