[1] SENAI CIMATEC Univ Ctr, Dept Computat Modeling, BR-41650010 Salvador, BA, Brazil
[2] Eletrobras Co, BR-20091005 Rio De Janeiro, Brazil
[3] SENAI CIMATEC Univ Ctr, Dept Generat Transmiss & Distribut, BR-41650010 Salvador, BA, Brazil
[4] Univ Pernambuco UPE, Polytech Sch Pernambuco, BR-50100010 Recife, PE, Brazil
[5] Univ Surrey, Surrey Inst People Ctr AI, Fac Engn & Phys Sci, Sch Comp Sci & Elect Engn, Guildford GU2 7XH, England