Method of monitoring for combustion anomalies in a gas turbomachine and a gas turbomachine including a combustion anomaly detection system

A system comprising:

• a compressor portion including an air inlet;
• a turbine portion operatively connected to the compressor portion, the turbine portion including an exhaust outlet;
• a combustor assembly fluidically connected to the compressor portion and the turbine portion;
• an air intake system fluidically connected to the air inlet;
• an exhaust system fluidically connected to the exhaust outlet, the exhaust system including a plurality of temperature sensors configured to detect a temperature of exhaust gases passing through the exhaust system;
• and
• a combustion anomaly detection system operatively connected to each of the plurality of temperature sensors, the combustion anomaly detection system including a computer readable storage medium having program instructions embodied therewith, the program instructions readable by a processing circuit for:
• sensing an exhaust gas temperature at each of the plurality of temperature sensors arranged in the exhaust system;
• comparing the exhaust gas temperature at each of the plurality of temperature sensors with a mean exhaust gas temperature;
• determining whether the exhaust gas temperature at one or more of the plurality of temperature sensors deviates from the mean exhaust temperature by a predetermined threshold value;
• and
• identifying an instantaneous combustion anomaly at one or more of the plurality of temperature sensors sensing a temperature deviating from the mean exhaust temperature by more than the predetermined threshold value,
• wherein, the program instructions readable by a processing circuit to cause the processing circuit to combine one or more of the plurality of temperature sensors into a group and to determine whether each of the one or more of the plurality of temperature sensors in the group senses a temperature deviating from the mean exhaust temperature, and
• wherein, the program instructions readable by a processing circuit to cause the processing circuit to determine:
• a maximum sensed temperature detected by one or more of the plurality of temperature sensors in the group;
• and
• a mean sensed temperature detected by the one or more of the plurality of temperature sensors in the group;
• and
• an average sensed temperature detected by the one or more of the plurality of temperature sensors in the group if all of the plurality of temperature sensors in the group sense a temperature deviating from the mean exhaust temperature.