Results 1 to 10 of about 5,351,386 (244)

Harmonic Source Location and Characterization Based on Permissible Current Limits by Using Deep Learning and Image Processing

open access: yesEnergies, 2022
Identification of harmonic sources contributing to harmonic distortion, and characterization of harmonic current injected by them, are crucial tasks in harmonic analysis of modern power systems.
Ahmadreza Eslami   +3 more
doaj   +3 more sources

Time‐domain harmonic source location and evaluation methods based on non‐linear and time‐varying properties of devices

open access: yesIET Generation, Transmission & Distribution
Most of the existing methods for harmonic analysis are from frequency‐domain perspective. In fact, the essential factor for generating harmonics is non‐linear characteristic or time‐varying property.
Chenhao Zhang   +4 more
doaj   +2 more sources

Equivalent Impedance Parameter Calculation of Three-Phase Symmetrical Loads for Harmonic Source Location

open access: yesJournal of Modern Power Systems and Clean Energy
The equivalent impedance parameters of loads have been widely used to identify and locate the harmonic sources. However, the existing calculation methods suffer from outliers caused by the zero-crossing of the denominator.
Yi Zhang   +4 more
doaj   +3 more sources

Spherical harmonics domain-based approach for source localization in presence of directional interference [PDF]

open access: yesJASA Express Letters, 2022
This paper presents a learning-based method for source localization in the presence of directional interference under reverberant and noisy conditions. The proposed method operates on the spherical harmonic decomposition of the spherical microphone array
Priyadarshini Dwivedi   +2 more
doaj   +1 more source

Harmonics Signal Feature Extraction Techniques: A Review

open access: yesMathematics, 2023
Harmonic estimation is essential for mitigating or suppressing harmonic distortions in power systems. The most important idea is that spectrum analysis, waveform estimation, harmonic source classification, source location, the determination of harmonic ...
Minh Ly Duc, Petr Bilik, Radek Martinek
doaj   +1 more source

Harmonics Analysis and Calculation in Power System Networks [PDF]

open access: yesEngineering and Technology Journal, 2008
- The harmonic distortion in the power system is increasing with wide use ofnonlinear loads such as wave rectifiers, static VAR compensator, and solid-state controlleddevices.Thus, it is important to analyze and evaluate the various harmonic problems in ...
Mohammed k.edan
doaj   +1 more source

Source-grid-load-storage interactive power quality characteristic of active distribution network

open access: yesFrontiers in Energy Research, 2022
Source-grid-load-storage has represented an interactive characteristic in the active distribution network (ADN). Moreover, power electronic devices have been widely used for source-grid-load-storage with the rapid development of power electronics ...
Yahui Li, Jie Lou, Kaiqi Sun, Ke-Jun Li
doaj   +1 more source

Harmonic State Estimation Method Based on Bayesian Optimized Elastic Network Regression

open access: yesZhongguo dianli, 2022
When the regression algorithm is used to estimate the harmonic state of power system, the high correlation between harmonic sources will cause the ill condition of the normal matrix, which will significantly affect the accuracy of harmonic estimation. In
Siqi MA, Zhong WANG
doaj   +1 more source

Multi-Harmonic Source Localization Based on Sparse Component Analysis and Minimum Conditional Entropy

open access: yesEntropy, 2020
Aiming at the fact that the independent component analysis algorithm requires more measurement points and cannot solve the problem of harmonic source location under underdetermined conditions, a new method based on sparse component analysis and minimum ...
Yongzhen Du, Honggeng Yang, Xiaoyang Ma
doaj   +1 more source

An artificial neural network based harmonic distortions estimator for grid- connected power converter-based applications

open access: yesAin Shams Engineering Journal, 2023
Grid-connected solar Photovoltaic (PV) systems are predicted to cause significant harmonic distortions in today’s power networks due to the increase utilization of power conversion systems widely recognized as harmonic sources.
Thamer A.H. Alghamdi   +3 more
doaj   +1 more source

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