COMBUSTION CONTROL DEVICE OF GAS TURBINE

摘要

PROBLEM TO BE SOLVED: To provide a combustion control device of a gas turbine capable of determining an opening directive value of each fuel flow regulation valve based on a ratio of a fuel. SOLUTION: The structure of this combustion control device of a gas turbine is so structured that a fuel flow directive value (PLCSO or the like) of each fuel gas is obtained based on a total fuel flow directive value (CSO) and a ratio of a fuel gas such as pilot ratio; a fuel gas flow rate (pilot fuel gas flow rate GfPLor the like) is obtained based on the fuel flow directive value and a function of the fuel flow directive value and the fuel gas flow rate; a Cv value of each fuel flow regulation valve is obtained from a Cv value calculation formula based on the fuel gas flow rate, a fuel gas temperature and front pressure and rear pressure of each fuel flow regulation valve (pilot fuel flow regulation valve or the like); and each fuel flow regulation valve opening directive value (pilot fuel flow regulation valve opening directive value or the like) is obtained based on the Cv value and a function of the Cv value and the fuel flow regulation valve opening. COPYRIGHT: (C)2007,JPO&INPIT