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Study on Harmonic Impedance Estimation and Harmonic Contribution Evaluation Index [PDF]
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, 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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Harmonic impedance assessment using prevailing phasors [PDF]
2018 18th International Conference on Harmonics and Quality of Power (ICHQP), 2018 In accordance with the IEC 61000-3-6, the evaluation of the harmonic emissions requires an accurate harmonic impedance representation of the system. However, the assessment of a harmonic impedance is understood to be a very complex problem and that the available methods are not entirely satisfactory.
D. Serfontein, J. Rens, Gerhard Botha
semanticscholar +4 more sources
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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IEEE Access, 2022 The permanent magnet synchronous machines system includes various harmonics caused by asymmetric impedance, current measurement errors, spatial harmonics, and inverter nonlinearity. The asymmetric impedance and the current measurement scaling error cause
Hao Lin +4 more
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The study of the harmonic impedance measurement
IOP Conference Series: Materials Science and Engineering, 2019 Harmonic impedance of system is the important parameter for the harmonic suppression and it is also useful to the design of filter, circuit analysis, et al. Generally, a controllable harmonic perturbation is used and injected into the target circuit port,
Hongtao Shi +3 more
semanticscholar +2 more sources
Energies, 2017 Considering the effect of the utility harmonic impedance variations on harmonic responsibility, a method based on piecewise bound constrained optimization is proposed in this paper to evaluate the load harmonic responsibilities.
Tianlei Zang +5 more
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