| 摘要 |
A combustion control method in a gas turbine is provided to set a fatigue threshold for the combustion chamber, implement appropriate protection in case the pressure excessively increases, and optimize maintenance interval for the element of the combustion chamber based on obtained data. A combustion control method in a gas turbine includes a step for measuring the amplitude of the pressure vibration or the cycle or duration of the same pressure vibration inside a combustion chamber(14) of the turbine by using one or more probes(30) located corresponding to the combustion chamber, a step for evaluating the reaction under fatigue condition of the combustion chamber by composing the Friedrich curve about the specific material forming the combustion chamber, about the preset combustion frequency, and about the measured amplitude and cycle value of the pressure oscillation, a step for measuring the accumulated damage to the combustion chamber under the fatigue condition on the Palmgren-Minor rule, and a step for implementing protection on the turbine when the measured accumulated damage exceeds the limit. |
