TY JOUR TI ANALYSIS OF THE MAIN COMPONENTS OF EFFICIENCY OF POWER SUPPLY SYSTEMS TO RURAL CONSUMERS KW efficiency of power supply systems KW damage from undersupply KW efficiency indicators KW stimulation of consumers and energy supply organizations JO Vestnik of Kazan State Agrarian University AU Vinogradov, A.V. AU Vinogradova, A.V. PY 2019 IS 14 PB Kazan state agrarian University