FIELD: mechanical engineering; gas turbines. SUBSTANCE: invention is designed to control fuel delivery into combustion chamber of gas generator turbine at sharp changes of load or during surge cycle in processing turbocompressor. Anti-surge control is started at appearance of analogue inputs from different instruments connected to system to which processing turbocompressor is connected. Fuel control system responds to input signals from drive gas turbine. These signals act fuel control system which feeds signal to operating mechanism of fuel valve metering out delivery of fuel into combustion chamber. In addition to sequence of control actions, required rate of change of fuel consumption is provided. Rate of increase of fuel consumption is set according to realized functions of fuel consumption control system. Nevertheless, rate of changes of fuel consumption is very high due to processes taking place at drop and recovery of load and stall character of surge process. Quick increase of fuel consumption in combustion chamber night cause sharp temperature rise with resulting temperature rise in gas turbine parts. That is why system featuring improved fuel consumption rate control is provided with additional function. According to this new function, regulator receives signal revealing surge or load drop. This signal is transmitted to operating mechanism of fuel valve which controls delivery of fuel into turbine combustion chamber, thus limiting power of turbine and preventing overspeed of turbine. Then rate of change of fuel valve position is limited for preset period of time. Immediately after recovery stage, rate of change of fuel valve position is return to preset value. EFFECT: improved reliability of control of gas turbine at sharp changes of load for prevention of temperature and speed variations in turbine plant. 73 cl, 17 dwg Nevertheless, rate of changes of fuel consumption is very high to processes taking place at drop and recovery of load and stall character of surge
