Gas turbine output correcting method, control method, device for executing said methods, and program causing computer to execute said methods

An output correction method for a gas turbine including a compressor that compresses air to generate compressed air, a combustor that combusts fuel in the compressed air to generate combustion gas, and a turbine to be driven by the combustion gas, the output correction method comprising:

• executing a correction coefficient creation step of creating a correction coefficient to be used when a control output of the gas turbine is corrected;
• executing an output correction step of correcting the control output using the correction coefficient, and outputting a corrected control output as a correction control output;
• executing an output reception step of receiving at least an output from an output meter that detects an output of the gas turbine;
• and
• executing an output storage step of storing the output received in the output reception step,
• wherein the correction coefficient creation step includes a first coefficient element calculation step of calculating a first coefficient element, a second coefficient element calculation step of calculating a second coefficient element, and a correction coefficient calculation step of calculating the correction coefficient using the first coefficient element and the second coefficient element,
• in the output storage step, a reference output that is an output under a condition where the gas turbine outputs a maximum output at a reference time in the past, and an immediately preceding output received in the output reception step under a condition where the gas turbine outputs a maximum output in an immediately preceding time period closer to a current time than to the reference time are stored,
• the first coefficient element is a ratio of the immediately preceding output stored in the output storage step to the reference output stored in the output storage step, and
• the second coefficient element is a ratio of a current output received in the output reception step under a condition where the gas turbine outputs a maximum output in a current time period between the immediately preceding time period and the current time, to the immediately preceding output stored in the output storage step.

A non-transitory computer-readable storage medium storing an output correction program for a gas turbine including a compressor that compresses air to generate compressed air, a combustor that combusts fuel in the compressed air to generate combustion gas, and a turbine to be driven by the combustion gas, the output correction program causing a computer to execute:

• a correction coefficient creation step of creating a correction coefficient to be used when a control output of the gas turbine is corrected;
• an output correction step of correcting the control output using the correction coefficient, and outputting a corrected control output as a correction control output;
• an output reception step of receiving at least an output from an output meter that detects an output of the gas turbine;
• and
• an output storage step of storing the output received in the output reception step, in a storage device of the computer,
• wherein the correction coefficient creation step includes a first coefficient element calculation step of calculating a first coefficient element, a second coefficient element calculation step of calculating a second coefficient element, and a correction coefficient calculation step of calculating the correction coefficient using the first coefficient element and the second coefficient element,
• in the output storage step, a reference output that is an output under a condition where the gas turbine outputs a maximum output at a reference time in the past, and an immediately preceding output received in the output reception step under a condition where the gas turbine outputs a maximum output in an immediately preceding time period closer to a current time than to the reference time are stored in the storage device,
• the first coefficient element is a ratio of the immediately preceding output stored in the storage device in the output storage step to the reference output stored in the storage device in the output storage step, and
• the second coefficient element is a ratio of a current output received in the output reception step under a condition where the gas turbine outputs a maximum output in a current time period between the immediately preceding time period and the current time, to the immediately preceding output stored in the storage device in the output storage step.