Gas Turbine Power Generation System, Control Method for Gas Turbine Power Generation System, and Control Device for Gas Turbine Power Generation System

A method for controlling a gas turbine power generation system, the method comprising:

• acquiring a request for an output of a gas turbine power generation system on the gas turbine power generation system equipped with a first rotation shaft, a compressor which generates compressed air by pressurizing air in accordance with rotation of the first rotation shaft, a combustor which generates combustion gas by mixing and combusting the compressed air and the fuel, a first turbine which rotates by receiving the combustion gas to drive the first rotation shaft, a rotating electric machine connected to the first rotation shaft, a speed adjustment mechanism which controls the speed of the compressor by adjusting the amount of the air, and a frequency converter which is connected between the rotating electric machine and an electric power system via an electric power line to convert the frequency of the electric power;
• controlling the combustor on the basis of the request;
• performing a frequency converter control for changing the rotational speed of the rotating electric machine on the basis of the request, on the frequency converter;
• performing supply or absorption of electric power in accordance with a change in the rotational speed by the rotating electric machine;
• and
• performing a speed adjustment mechanism control for adjusting the rotational speed to match a reference value, on the speed adjustment mechanism.

A control device for a gas turbine power generation system, the control device comprising:

• an acquiring unit which acquires a request for an output of a gas turbine power generation system, on the gas turbine power generation system comprising:
• a first rotation shaft, a compressor which generates compressed air by pressurizing air in accordance with rotation of the first rotation shaft, a combustor which generates combustion gas by mixing and combusting the compressed air and the fuel, a first turbine which rotates by receiving the combustion gas to drive the first rotation shaft, a rotating electric machine connected to the first rotation shaft, a speed adjustment mechanism which controls the speed of the compressor by adjusting the amount of the air, and a frequency converter which is connected between the rotating electric machine and an electric power system via an electric power line to convert the frequency of the electric power;
• a combustor control unit which controls the combustor based on the request;
• a frequency converter control unit which causes the rotating electric machine to perform supply or absorption of electric power depending on a change in rotational speed, by performing a frequency converter control for changing the rotational speed of the rotating electric machine based on the request, on the frequency converter;
• and
• a speed adjustment mechanism control unit which performs a speed adjustment mechanism control for adjusting the rotational speed to match a reference value on the speed adjustment mechanism.

A control device for a gas turbine power generation system, the control device comprising:

• an acquiring unit which acquires a request for an output of a gas turbine power generation system, on the gas turbine power generation system comprising:
• a first rotation shaft, a compressor which generates compressed air by pressurizing air in accordance with rotation of the first rotation shaft, a combustor which generates combustion gas by mixing and combusting the compressed air and the fuel, a first turbine which rotates by receiving the combustion gas to drive the first rotation shaft, a rotating electric machine connected to the first rotation shaft, a speed adjustment mechanism which controls the speed of the compressor by adjusting the amount of the air, a frequency converter which is connected between the rotating electric machine and an electric power system via an electric power line to convert the frequency of the electric power, and a gas turbine control device which controls the combustor and performs a speed adjustment mechanism control for adjusting the rotational speed of the rotating electric machine to match a reference value, on the speed adjustment mechanism;
• and
• a frequency converter control unit which causes the rotating electric machine to perform supply or absorption of the electric power depending on a change in rotational speed, by performing a frequency converter control for changing the rotational speed based on the request, on the frequency converter.

A method for controlling a gas turbine power generation system, the method comprising:

• acquiring a request for an output of a gas turbine power generation system on the gas turbine power generation system comprising:
• a first rotation shaft, a compressor which generates compressed air by pressurizing air in accordance with rotation of the first rotation shaft, a combustor which generates combustion gas by mixing and combusting the compressed air and the fuel, a first turbine which rotates by receiving the combustion gas to drive the first rotation shaft, a rotating electric machine connected to the first rotation shaft, a speed adjustment mechanism which controls the speed of the compressor by adjusting the amount of the air, a frequency converter which is connected between the rotating electric machine and an electric power system via an electric power line to convert the frequency of the electric power, and a gas turbine control device which controls the combustor and performs a speed adjustment mechanism control for adjusting the rotational speed of the rotating electric machine to match a reference value, on the speed adjustment mechanism;
• and
• causing the rotating electric machine to perform supply or absorption of electric power depending on a change in rotational speed, by performing a frequency converter control for changing the rotational speed based on the request, on the frequency converter.