METHOD FOR POWER CONTROLLING OF SYSTEM GAS TURBINE - GENERATOR Russian patent published in 2020 - IPC H02P9/04 F01K13/02 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and can be used in controlling engines, particularly when controlling power of a gas turbine-generator system, e.g. gas turbo-locomotives, hybrid locomotives. In the gas turbine – generator system power control method, the by the comparison result of the gas turbine power shaft turbine shaft speed setting with its actual value generates the fuel flow setpoint required to maintain the specified power turbine rotation frequency. Simultaneously, according to actual value of electric power of traction generator, set fuel flow rate required to maintain measured power of traction generator. Setpoints are summed up and set as setting of fuel flow rate supplied to gas turbine. Rotary speed sensors measure the turbine low- and high-pressure turbine rotational speeds, measure the air temperature at the inlet of the gas turbine; on the basis of these measurements the current capacity of the gas turbine is calculated, by the value of which the maximum setting of fuel consumption is calculated. Specifying minimum fuel consumption setting; comparing the setpoint of fuel flow supplied to the gas turbine with the rated maximum setpoint and the set minimum fuel setpoint. If the fuel flow rate setting is less than the minimum value, the fuel consumption setting is assumed to be equal to the minimum value; if the fuel flow rate setting is more than the maximum one, then the fuel consumption setting is assumed to be equal to the maximum value. Maximum power on power turbine shaft is calculated, which can be obtained at maximum fuel consumption setting; rated maximum power on power turbine shaft is compared with preset power of traction generator. If the specified power of the traction generator exceeds the rated maximum power on the shaft of the power turbine, then the specified power of the traction generator is accepted equal to the rated maximum power on the shaft of the power turbine.

EFFECT: excluding the possibility of surging in the gas turbine and providing the conditions for formation of the energy-optimal trajectory of the gas turbine – generator system loading in the entire power control range.

1 cl, 1 dwg