Fault Identification Algorithm and Fault Tolerance Design of Gas Turbine Exhaust Gas Thermocouple
Exhaust temperature after turbine is one of the most important performance and condition parameters of gas turbine.The fault identification and fault tolerance processing of exhaust temperature sensor after turbine plays a critical role in the safe operation of the unit.There are 16 exhaust temperature measuring signals after turbine for gas turbine.In order to accurately judge whether abnormal changes in temperature measuring signals are caused by sensor faults and avoid unnecessary shutdown of the gas turbine set due to minor faults of single sensors,a real-time online algorithm for fault identification and judgment of thermocouple based on temperature change of adjacent measuring signals and load change was designed.The application verification shows that the designed logic algorithm can accurately identify and judge the fault situation of exhaust thermocouple,and provides timely warning information to the operator,effectively avoiding the unnecessary shutdown phenomenon caused by single sensor fault.
gas turbineexhaust gas temperaturethermocouplefault identificationrate of temeperature change
万方数据
维普
