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Classification of sags according to their origin based on the waveform similarity

A statistical method for classification of sags their origin downstream or upstream from the recording point is proposed in this work. The goal is to obtain a statistical model using the sag waveforms useful to characterise one type of sags and to discriminate them from the other type. This model is built on the basis of multi-way principal component analysis an later used to project the available registers in a new space with lower dimension. Thus, a case base of diagnosed sags is built in the projection space. Finally classification is done by comparing new sags against the existing in the case base. Similarity is defined in the projection space using a combination of distances to recover the nearest neighbours to the new sag. Finally the method assigns the origin of the new sag according to the origin of their neighbours

IEEE

Author: Meléndez i Frigola, Joaquim
Berjaga Moliné, Xavier
Herraiz Jaramillo, Sergio
Barrera Núñez, Víctor Augusto
Sánchez, Jorge
Castro, M.
Abstract: A statistical method for classification of sags their origin downstream or upstream from the recording point is proposed in this work. The goal is to obtain a statistical model using the sag waveforms useful to characterise one type of sags and to discriminate them from the other type. This model is built on the basis of multi-way principal component analysis an later used to project the available registers in a new space with lower dimension. Thus, a case base of diagnosed sags is built in the projection space. Finally classification is done by comparing new sags against the existing in the case base. Similarity is defined in the projection space using a combination of distances to recover the nearest neighbours to the new sag. Finally the method assigns the origin of the new sag according to the origin of their neighbours
Document access: http://hdl.handle.net/2072/66795
Language: eng
Publisher: IEEE
Rights: Tots els drets reservats
Subject: Energia elèctrica -- Distribució -- Alta tensió
Energia elèctrica -- Transmissió -- Control de qualitat
Errors de diagnòstic
Diagnostic errors
Electric power distribution -- High tension
Electric power transmission -- Quality control
Title: Classification of sags according to their origin based on the waveform similarity
Type: info:eu-repo/semantics/article
Repository: Recercat

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