초록 ▼

A control method of a gas turbine which is provided with a multi can type combustor consisting of a plurality of unit combustors, each of which has a first stage combustion section for diffusion combustion and a second stage combustion section for premix combustion. Combustion states in the first an

A control method of a gas turbine which is provided with a multi can type combustor consisting of a plurality of unit combustors, each of which has a first stage combustion section for diffusion combustion and a second stage combustion section for premix combustion. Combustion states in the first and second stage combustion sections are monitored to take in quantities representative of the combustion conditions as control factors. The combustion in the second stage combustion section is assumed to be abnormal when the taken in quantities exceed an allowable limit and the combustion in the first and second stage combustion sections is changed to independent combustion only in the first stage combustion section when the number of unit combustors, each of which is assumed to be abnormal, exceeds a predetermined number of the unit combustors.

대표청구항 ▼

[ What is claimed is:] [1.] A control method of a gas turbine provided with a multi can type combustor comprising a plurality of unit combustors, each of which has a first stage combustion section for diffusion combustion and a second stage combustion section for premix combustion, characterized in

[ What is claimed is:] [1.] A control method of a gas turbine provided with a multi can type combustor comprising a plurality of unit combustors, each of which has a first stage combustion section for diffusion combustion and a second stage combustion section for premix combustion, characterized in thatthe combustion condition in said combustion sections is monitored to obtain monitored values andthe combustion in said first and second stage combustion sections is changed to combustion only in said first stage combustion sections when a value representative of the combustion condition, obtained from the monitored values exceeds an allowable limit and the number of combustors which exceeds the allowable limit exceeds one-third or more to one-half or less of the total number of unit combustors.