1. Donetsk National Technical University,Dept. "Electrical Engineering",Lutsk,Ukraine
2. National Technical University "Kharkiv Polytechnic Institute",Dept. "Electric Power Transmission",Kharkiv,Ukraine
3. National University "Poltava Polytechnic Named After Yury Kondratyuk",Dept. "Automation, Electronics and Telecommunications",Poltava,Ukraine
4. Kharkiv National University of Municipal Economy Named After O.M. Beketov,Dept. "Systems of Power Supply and Power Consumption of Cities",Kharkiv,Ukraine