Title :
On-line stator fault diagnosis in low voltage induction motors
Author :
Albizu, I. ; Zamora, I. ; Mazón, A.J. ; Saenz, J.R. ; Tapia, A.
Author_Institution :
Univ. of the Basque Country, San Sebastian, Spain
Abstract :
If the induction motor voltage is high enough, it is possible to detect insulation degradation by means of partial discharge monitoring before a stator fault occurs. By contrast, in low voltage induction motors, the on-line stator fault diagnosis relies on the detection of inter-turn short circuits. This paper presents and analyses some of these techniques. Diagnostic techniques based on negative-sequence current, sequence impedances and current signature analysis are described.
Keywords :
condition monitoring; fault diagnosis; induction motors; insulation testing; partial discharge measurement; power system faults; stators; current signature analysis; insulation degradation; inter-turn short circuits; low voltage induction motors; negative-sequence current; on-line stator fault diagnosis; partial discharge monitoring; sequence impedances; Degradation; Electrical fault detection; Fault detection; Fault diagnosis; Induction motors; Insulation; Low voltage; Monitoring; Partial discharges; Stators;
Conference_Titel :
Universities Power Engineering Conference, 2004. UPEC 2004. 39th International
Conference_Location :
Bristol, UK
Print_ISBN :
1-86043-365-0
