A cascade-type hierarchical fuzzy system with additional defuzzification of layers for the automatic power quality diagnosis

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dc.contributor.authorNolasco, Diego Habib Santos
dc.contributor.authorPalmeira, Eduardo Silva
dc.contributor.authorCosta, Flávio Bezerra
dc.date.accessioned2020-08-12T21:14:00Z
dc.date.available2020-08-12T21:14:00Z
dc.date.issued2019-04-04
dc.description.resumoIn general the power quality diagnosis of low-voltage electrical systems is a difficult issue due to the nuances of different power quality standards around the world and the uncertainties characteristics of the evaluation parameters. In this framework, this paper proposes a new methodology for diagnosing the power quality by means of a cascade-type hierarchical fuzzy system with additional defuzzification of layers (C-HFS-ADL), also proposed in this paper, which is able to evaluate the power quality indices in steady-state (total harmonic distortions, power factor, voltage variation, and unbalance voltage) considering several standards and provides a proper and complete diagnosis of the power quality in electrical systems. In the proposed C-HFS-ADL each output of a subsystem is transferred between inner layers of the hierarchical system and a total power quality diagnosis is obtained taking into account a secondary decision-making process with additional defuzzification in order to have a partial diagnosis for each subsystem of the hierarchy. In addition, an algorithm was implemented considering different inference systems for analyzing the behavior of the C-HFS-ADL on a database (power quality indices) obtained from a real electrical substation for observing its advantages and disadvantagespt_BR
dc.identifier.citationNOLASCO, D.H.S.; PALMEIRA, E.S.; COSTA, F.B.. A cascade-type hierarchical fuzzy system with additional defuzzification of layers for the automatic power quality diagnosis. Applied Soft Computing, [s.l.], v. 80, p. 657-671, jul. 2019. Elsevier BV. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S1568494619300675?via%3Dihub#!. Acesso em: 10 ago. 2020. https://doi.org/10.1016/j.asoc.2019.02.007pt_BR
dc.identifier.doi10.1016/j.asoc.2019.02.007
dc.identifier.issn1568-4946
dc.identifier.urihttps://repositorio.ufrn.br/jspui/handle/123456789/29807
dc.languageenpt_BR
dc.publisherElsevierpt_BR
dc.subjectHierarchical fuzzy systempt_BR
dc.subjectAggregate fuzzy inferencept_BR
dc.subjectAdditional defuzzification of layerspt_BR
dc.subjectDiagnosispt_BR
dc.subjectPower qualitypt_BR
dc.titleA cascade-type hierarchical fuzzy system with additional defuzzification of layers for the automatic power quality diagnosispt_BR
dc.typearticlept_BR

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