Affiliation: | aElectrical Engineering Department, National Technical University of Athens, 9 Iroon Polytechniou str., Zografou, 15773, Athens, Greece bElectrical Engineering Department, University of Thrace, 12 Vass.Sofias str., 67100 Xanthi, Greece cHellenic Transmission System Operator, 11 Amfitheas Ave., N.Smyrni, 17122, Athens, Greece |