FIELD: fast stabilization of three-phase sinusoidal voltage of industrial and agricultural objects. SUBSTANCE: technical result of invention consists in provision for compensation for deviation of voltage on low-voltage side of transformer substation thanks to insertion of antideviations into its high-voltage side circuit. System has booster transformer which secondary winding is connected to load via reversible rectifier, filter and double-bridge voltage inverter. Its primary winding is connected in series with primary winding of main transformer of substation. Given automatic system employs mixed adjustment of additional high voltage, both amplitude and pulse-duration. Pulse-duration adjustment is realized by double-bridge voltage inverter in function of deviation of voltage across load and amplitude adjustment is realized by reversible rectifier in function of deviation of voltage of network or load. EFFECT: simplified design of automatic system, improved quality of output voltage and high-speed response. 2 cl, 4 dwg
