[1] Univ Putra Malaysia, Fac Engn, Dept Elect & Elect Engn, Serdang 43400, Malaysia
[2] Univ Putra Malaysia, Fac Engn, Adv Lightning Power & Energy Res, Serdang 43400, Malaysia
[3] Univ Witwatersrand, Sch Elect & Informat Engn, 1 Jan Smuts Ave, ZA-2000 Johannesburg, South Africa
[4] Torrens Univ Australia, Ctr Artificial Intelligence Res & Optimisat, Brisbane, Qld 4006, Australia