METHOD FOR CONTROLLING COOLING SYSTEM OF OIL-FILLED POWER TRANSFORMER Russian patent published in 2018 - IPC G05B13/02 H01F27/12 G05D23/30 

FIELD: control systems.

SUBSTANCE: invention relates to control systems that automatically selects the optimum operating mode. Method for controlling the cooling system of an oil-filled transformer with a frequency-controlled drive of oil and air coolers comprises the following. On the basis of thermohydraulic models of the transformer, an array of possible modes of the transformer and the corresponding array of cooling modes are formed. During operation, currents in the transformer windings and environmental parameters are measured and the transformer mode sub-array corresponding to the measured currents is selected, and for each selected mode of the transformer, a sub-array of cooling modes corresponding to the measured environmental parameters. For each selected cooling mode, the total electric power consumption for cooling and for losses in the transformer is calculated, and the cooling mode minimising said consumption is set, keeping the temperature of the most heated point within the permissible limits.

EFFECT: technical result of the invention is to reduce the total energy consumption for cooling the transformer and for losses therein.

5 cl, 1 dwg