FIELD: calculating; counting. SUBSTANCE: invention relates to computer engineering. System for testing electrical power system (EPS) control algorithms comprises: simulation unit, analog amplifier and control unit, wherein the simulation unit is configured to simulate a computer model of EPS and calculate values of indicators of such a model; analog amplifier is configured to vary gain value and is intended to amplify values of EPS model values; control unit is configured to store EPS control algorithms, to process the amplified EPS model values and to apply EPS control algorithms for EPS adaptation of computer model, and is also configured to make changes in EPS control algorithms. EFFECT: technical result consists in improvement of reliability of electric power system.