GAS TURBINE POWER GENERATION SYSTEM AND METHOD OF DETECTING CALORIFIC ABNORMALITY OF THE SAME

摘要

A variation in calorific value is detected using existing measurement values, without using a measurement device such as a calorimeter. An allowable variation range of a gas turbine power generation output with respect to a charged fuel amount or an allowable variation range of a charged fuel amount with respect to a gas turbine power generation output is set from a relation between the fuel amount charged to the combustor of the gas turbine and the gas turbine power generation output when the fuel gas calorific value is constant, and a calorific abnormality is detected when an actually charged fuel amount or an actual gas turbine power generation output falls outside the allowable variation range.