1. Department of Automated Electric Power Systems, Novosibirsk State Technical University, Novosibirsk 630073, Russia
2. Department of Power Plants, Novosibirsk State Technical University, Novosibirsk 630073, Russia
3. Department of Automated Electrical Systems, Ural Federal University, Yekaterinburg 620002, Russia
4. Faculty of Electrical and Environmental Engineering, Riga Technical University, 1048 Riga, Latvia