FUEL GAS CALORIE CONTROL SYSTEM OF GAS TURBINE

摘要

PROBLEM TO BE SOLVED: To provide a fuel gas calorie control system of a gas turbine for sufficiently restraining even large gas calory disturbance by adjusting an adding gas flow rate by grasping a calorie variation in advance from a calorimeter arranged in an upstream pipe.

SOLUTION: This fuel gas calorie control system of the gas turbine is provided for adjusting the adding gas flow rate by grasping the calorie variation in advance by providing a feedback control system for adjusting an adding gas quantity by a fuel gas calorie estimated from an estimate of correcting power generation output efficiency calculated from an operation characteristic of the gas turbine by a gas turbine inlet side gas calorie quantity, a fuel gas flow rate and power generation output and a feedforward control system for restraining influence of elapsed time when mixed gas moves up to a combustor of the gas turbine from a gas mixer 3 for mixing main fuel gas and adding gas.

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