1. Hydro Power Plants Company; Aswan Egypt
2. State Key Laboratory of Power Transmission Equipment and System Security and New Technology; Chongqing University; Chongqing China
3. Electrical Engineering Department, Faculty of Engineering; Aswan University; Aswan 81542 Egypt
4. Department of Electrical Engineering; University of Jaén; 23700 EPS Linares Jaén Spain
5. Department of Electrical Engineering, Faculty of Engineering; Sohag University; Sohag Egypt