Patent ID: 7188019

Claim:
A gas turbine control apparatus comprising: a frequency analyzing portion carrying out a frequency analysis of fluctuation of pressure or acceleration in a combustor of a gas turbine and putting out an analysis result divided into frequency bands in which the result of said frequency analysis is divided into a plurality of frequency bands, a priority order information containing portion containing information on a priority order set for said plurality of frequency bands, a combustion characteristic grasping portion grasping a characteristic of combustion fluctuation of said gas turbine, based on said analysis result divided into frequency bands and process data of said gas turbine, and a control portion adjusting at least one of a flow rate of fuel and a flow rate of air to be supplied into said combustor so that the combustion fluctuation of a frequency band of a high priority order is suppressed, based on the information on said priority order contained in said priority order information containing portion, when said combustion characteristic grasping portion grasps that the combustion fluctuation arises in a plurality of frequency bands.