Simultaneous-Fault Diagnosis of Gas Turbine Generator Systems Using a Pairwise-Coupled Probabilistic Classifier

Table 1

Sample single-faults and possible simultaneous-faults in the gearbox of GTGS.

Case no.	Condition	Description of fault
C1	Normal	Normal
C2	Single-faults	Unbalance
C3		Looseness
C4		Mechanical misalignment
C5		Wear of cage and rolling elements of bearing
C6		Wear of outer race of bearing
C7		Gear tooth broken
C8		Gear crack
C9		Chipped tooth
C10	Simultaneous-faults	Gear tooth broken and chipped tooth
C11		Chipped tooth & wear of outer race of bearing
C12		Gear tooth broken and wear of cage and rolling elements of bearing
C13		Gear tooth broken and wear of cage and rolling elements of bearing & wear of outer race of bearing