FAULT DIAGNOSIS DURING TESTING OF TURBINE UNIT

摘要

There is described a method of fault diagnosis during testing of a turbine unit in a turbine testing system, the turbine unit comprising a plurality of turbine components and turbine sensors, the turbine testing system comprising a plurality of testing sensors. The described method comprises (a) obtaining measurement data from the turbine sensors and the testing sensors, (b) calculating at least one parameter value based on the measurement data, (c) determining a deviation of the measurement data and the at least one parameter value by comparing the measurement data and the at least one parameter value with predetermined reference data, and (d) matching the determined deviation to a plurality of predetermined fault signatures in order to detect a fault, wherein the plurality of predetermined fault signatures comprises a first set of fault signatures and a second set of fault signatures, the first set of fault signatures corresponding to turbine sensor faults and/or testing sensor faults and assumed fault-free turbine components, the second set of fault signatures corresponding to turbine component faults and assumed fault- free turbine sensors and testing sensors.