Abstract
ion of significant temporal features of voltage Sags recorded in a 25kV substation D. Llanos, J. Melendez, J. Colomer, J. Mora, J. Corbella and J. Sanchez 1 Control Engineering and Intelligent Systems Group eXiT University of Girona Av. Lluis Santalo s/n. Building P.IV Girona (Spain) phone:+34 972 418391, fax:+34 972 418 97601, e-mail: dllanosr@eia.udg.es quimmel@eia.udg.es colomer@eia.udg.es jjmora@eia.udg.es 2 ENDESA FJCorbella@enher.es jslosada@fecsa.es Abstract. The existing methods to characterise voltage sags use the lowest of the three voltages and the longest duration. Basic quantitative | qualitative voltage sag attributes have been obtained from recorded waveforms in order to increase the number of measures to characterise a voltage sag. Also a method to compare voltage sags have been proposed and applied in sags recorded in a 25 kV substation.
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