Patent ID: 6868663

Claim:
A gas turbine plant comprising: a combustion section configured to combust fuel and air to generate combustion gas; a turbine section configured to be driven by the combustion gas from the combustion section; an exhaust section connected to the turbine section and configured to exhaust the combustion gas from the turbine section; a temperature detecting unit provided in the exhaust section configured to measure a temperatures of the combustion gas; and a monitoring unit configured to generate a warning signal based on a comparison of a predetermined level and a temporal change of data corresponding to the measured temperature, the monitoring unit comprising: a temperature change determining section comprising: a delay unit configured to delay the measured temperature by a predetermined time period to provide a delayed temperature; and a difference calculating unit configured to calculate a calculated difference between the delayed temperature and the measured temperature, and to output the calculated difference as the temporal change of the data corresponding to the measured temperature.