1. Department of Electrical Engineering, K. N. Toosi University of Technology, Tehran, Iran
2. Schering-Institute for High Voltage Engineering and Asset Management, Institut für Elektrische Energiesysteme, Fachgebiet Hochspannungstechnik und Asset Management, Schering-Institut, Leibniz Universität Hannover, Hannover, Germany
3. Faculty of Engineering, Friedrich-Alexander University of Erlangen-Nürnberg, Erlangen, Germany