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V. Makarov
Department of Electric Motors and Electrotechnics,
Kazan National Research Technological University
V. Zagirova
Department of Electric Motors and Electrotechnics,
Kazan National Research Technological University
G. Vagapov
Department of Methods of Increase of Power Supply Reliability and Power Quality in Distributive Electrical Grids,
Kazan State Power Engineering University
L. Grackova
Laboratory of Energy System Analysis and Optimisation,
Institute of Physical Energetics
Latvia