Patent ID: 8386212

Claim:
A monitoring and diagnosing apparatus of a gas turbine having a plurality of combustors, the monitoring and diagnosing apparatus comprising: a combustion monitoring image plane to display thereon a temperature of each of the plurality of combustors; a trouble judging unit to diagnose presence of abnormality as evaluation of combustion states of the combustors, based on changing trends of fuel-air ratios of the combustors and temperatures of the combustors; a restoring capability evaluation judging unit, as the evaluation of the combustion states of the combustors, to judge as abnormal, with a deviation in an actually measured value from a planned value of fuel air ratio and any of a compressor air flow rate change, a fuel flow rate change or a fuel command value change departing from an allowable value; a judging unit to judge whether a result, which is obtained by a control set value tuning supporting function unit for tuning control set values by operating a load changing operation analyzing function including therein an operating characteristic evaluation tool, falls within an allowable range of planned value, when the restoring capability evaluation judging unit, as the evaluation of the combustion states of the combustors, judges as abnormal, with a deviation in an actually measured value from a planned value of fuel-air ratio and any of a compressor air flow rate change, a fuel flow rate change or a fuel command value change departing from an allowable value; and a sending unit to send to the gas turbine recommended control set values for controlling the combustor that was judged abnormal, when the judging unit judged that the result falls in the allowable range of the planned value.