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A hybrid method for sag source location in power network
Khosravi, Abbas; Meléndez i Frigola, Joaquim; Colomer Llinàs, Joan; Sánchez, Jorge
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
2010-06-11
Energia elèctrica -- Distribució -- Control de qualitat
Energia elèctrica -- Transmissió -- Control de qualitat
Errors de sistemes (Enginyeria) -- Localització
Xarxes elèctriques
Electric networks
Electric power distribution -- Quality control
Electric power transmission -- Quality control
System failures (Engineering) -- Location
Tots els drets reservats
Article
IEEE
         

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