{ "dc.contributor.author": "Khosravi, Abbas" , "dc.contributor.author": "Meléndez i Frigola, Joaquim" , "dc.contributor.author": "Colomer Llinàs, Joan" , "dc.contributor.author": "Sánchez, Jorge" , "dc.date.accessioned": "2010-06-10T07:00:07Z" , "dc.date.available": "2010-06-07T12:27:23Z" , "dc.date.available": "2010-06-10T07:00:07Z" , "dc.date.issued": "2007" , "dc.identifier.citation": "Khosravi, A., Meléndez, J., Colomer, J., i Sánchez, J. (2007). A hybrid method for sag source location in power network. 9th International Conference on Electrical Power Quality and Utilisation : 2007 : EPQU 2007, 1-6. Recuperat 10 juny 2010, a http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4424087" , "dc.identifier.isbn": "978-84-690-9441-9" , "dc.identifier.uri": "http://hdl.handle.net/10256/2576" , "dc.description.abstract": "The work presented in this paper belongs to the power quality knowledge area and deals with the voltage sags in power transmission and distribution systems. Propagating throughout the power network, voltage sags can cause plenty of problems for domestic and industrial loads that can financially cost a lot. To impose penalties to responsible party and to improve monitoring and mitigation strategies, sags must be located in the power network. With such a worthwhile objective, this paper comes up with a new method for associating a sag waveform with its origin in transmission and distribution networks. It solves this problem through developing hybrid methods which hire multiway principal component analysis (MPCA) as a dimension reduction tool. MPCA reexpresses sag waveforms in a new subspace just in a few scores. We train some well-known classifiers with these scores and exploit them for classification of future sags. The capabilities of the proposed method for dimension reduction and classification are examined using the real data gathered from three substations in Catalonia, Spain. The obtained classification rates certify the goodness and powerfulness of the developed hybrid methods as brand-new tools for sag classification" , "dc.format.mimetype": "application/pdf" , "dc.language.iso": "eng" , "dc.publisher": "IEEE" , "dc.relation.isformatof": "Reproducció digital del document publicat a: http://dx.doi.org/10.1109/EPQU.2007.4424087" , "dc.relation.ispartof": "© 9th International Conference on Electrical Power Quality and Utilisation : 2007 : EPQU 2007, 2007, p. 1-6" , "dc.relation.ispartofseries": "Articles publicats (D-EEEiA)" , "dc.rights": "Tots els drets reservats" , "dc.subject": "Energia elèctrica -- Distribució -- Control de qualitat" , "dc.subject": "Energia elèctrica -- Transmissió -- Control de qualitat" , "dc.subject": "Errors de sistemes (Enginyeria) -- Localització" , "dc.subject": "Xarxes elèctriques" , "dc.subject": "Electric networks" , "dc.subject": "Electric power distribution -- Quality control" , "dc.subject": "Electric power transmission -- Quality control" , "dc.subject": "System failures (Engineering) -- Location" , "dc.title": "A hybrid method for sag source location in power network" , "dc.type": "info:eu-repo/semantics/article" , "dc.rights.accessRights": "info:eu-repo/semantics/openAccess" , "dc.identifier.doi": "http://dx.doi.org/10.1109/EPQU.2007.4424087" }