Delay time calculation method and gas turbine control method, and delay time calculation apparatus and control apparatus for gas turbine

Abstract

A delay time calculation method includes: a step of calculating a plurality of segment movement delay times respectively indicating times required for the fuel gas to pass through a plurality of segments; a step of calculating a total movement delay time which is a time required for the fuel gas to move through the fuel line from the measurement point to the supply target device, by adding up the plurality of segment movement delay times; and a step of acquiring the delay time based on the total movement delay time. The step of calculating the plurality of segment movement delay times includes acquiring the segment movement delay time based on a correlation between the segment movement delay time acquired in advance and a fuel flow rate supplied to the supply target device, for each of the plurality of segments.