Dominant impedance method to assign harmonic voltage contributions at a point of common coupling

Santos, Ivan Nunes; Oliveira, José Carlos de; Santos, Andréia Crico dos

doi:10.1002/2050-7038.12895

Cited by 2 publications

(3 citation statements)

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“…The superposition theorem applied to a Norton equivalent circuit is the most widely used technique in methods for the sharing of harmonic responsibility at the PCC. 6 , 7 , 23 Generally, in this method, shown in Figure 1 , each harmonic order is represented separately by a Norton equivalent circuit.…”

Section: Harmonic Contributions and The Ica Modelmentioning

confidence: 99%

“…The installation of components, such as filters, reactors, among others, demonstrate good results when assigning responsibilities regarding the presence of harmonic distortions. 4 , 5 , 6 , 7 Nonetheless, these invasive methods are expensive and difficult to implement, especially when dealing with high‐ and medium‐voltage networks.…”

Section: Introductionmentioning

confidence: 99%

“…After that, a field test in an installation containing a combination of linear and nonlinear components fed by a pre‐distorted utility is performed. And the results obtained by the BSS methodology are compared with the invasive dominant impedance method (DIM) 6 results.…”

Section: Introductionmentioning

confidence: 99%

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Blind source separation methods applied to evaluate harmonic contribution

Pereira

Silva

Santos

2021

Int Trans Electr Energ Syst

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Summary One of the greatest challenges found in power quality has been, and still is, the establishing of a reliable noninvasive method for quantifying the harmonic contributions of an electric utility and a consumer at the point of common coupling (PCC). This difficulty arises from the fact that the harmonic distortions measured on the PCC are unidentifiable mixtures from both parties. Currently, some work has focused on exploring the use of blind source separation (BSS) techniques to promote the sharing of harmonic responsibilities in a noninvasive way. However, the usage of this methodology is very recent and still requires thorough evaluations, not only from the point of view of the BSS techniques available in the literature, but also from the perspective of the electrical power systems and the nature of their loads. Thus, seeking to contribute to the consolidation of the use of BSS techniques in the sharing of harmonic responsibilities, this work aimed to investigate the impact of the variation of harmonic current sources on the accuracy of BSS methods. In addition, three algorithms suitable for complex‐valued signals were evaluated computationally and experimentally; the results obtained computationally were compared with the results of the method based on the covariance characteristic of the random vectors, and the experimental results was compared to that obtained through an invasive procedure.

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Section: Harmonic Contributions and The Ica Modelmentioning

confidence: 99%