Results 1 to 10 of about 1,044,967 (248)
Study on Harmonic Impedance Estimation and Harmonic Contribution Evaluation Index
IEEE Access, 2020 Harmonic impedance estimation and suitable evaluation index selection are the key steps of harmonic contribution evaluation. Most of the traditional harmonic impedance estimation methods are only applicable to the scenario, where the background harmonic ...
Ziteng Liu +3 more
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Study on the Estimation of Utility Harmonic Impedance Based on Minimum Norm of Impedance Difference
IEEE Access, 2020 The existing methods for estimating harmonic impedance usually assume that harmonic impedance is constant in a measurement period. However, for a variety of practical reasons, such as the load change of power grid, utility harmonic impedance may be ...
Fangwei Xu +5 more
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IEEE Access, 2022 Accurate estimation of the utility harmonic impedance is significant for harmonic control and responsibility division. Traditional methods of estimating the utility harmonic impedance are valid on the premise that the harmonic impedance on the wind-farm ...
Runze Zhou +4 more
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Energies, 2022 There are a huge number of harmonics in the railway power supply system. Accurately estimating the harmonic impedance of the system is the key to evaluating the harmonic emission level of the power supply system. A harmonic impedance estimation method is
Yankun Xia, Wenzhang Tang
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IEEE Access, 2023 The background harmonic fluctuation has a significant impact on the results of harmonic contribution quantification. However, the existing methods, especially those applied for multiple harmonic sources scenario, usually assume that the background ...
Xin Tang +7 more
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A Harmonic Impedance Identification Method of Traction Network Based on Data Evolution Mechanism
Energies, 2020 In railway electrification systems, the harmonic impedance of the traction network is of great value for avoiding harmonic resonance and electrical matching of impedance parameters between trains and traction networks.
Ruixuan Yang, Fulin Zhou, Kai Zhong
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IET Generation, Transmission and Distribution, 2020 For harmonic control of a power grid, it is prerequisite to accurately estimate and follow the utility harmonic impedance at the point of common coupling (PCC).
Qin Shu, Fangwei Xu
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Novelty method for the utility harmonic impedance estimation based on Gaussian mixed model
IET Generation, Transmission & Distribution, 2020 The accurate estimation of harmonic impedance on the utility side of a point of common coupling (PCC) is much important to harmonic control, harmonic emission level, and harmonic responsibility analysis.
Zhirong Tang +3 more
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Energies, 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
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Measurement-Based Distribution Grid Harmonic Impedance Models and Their Uncertainties
Energies, 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
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