Title :
A monitoring and diagnostic technology, based on PDAD detection and analysis, for HV generators
Author :
Boscolo, A. ; Contin, A. ; Rabach, G. ; Tosato, F. ; Cimbrico, P.L.
Author_Institution :
DEEI, Trieste Univ., Italy
Abstract :
The authors report experimental results obtained by detecting partial-discharge amplitude distributions (PDADs) on synchronous generators using multiprocessor-based instrumentation. The applicability of this method as a monitoring and diagnostic tool is discussed. After a review of problems concerning partial-discharge detection and location in HV-generator stator windings, the authors describe some significant field experiences. Measurements were performed on 70-MVA, 120-MVA, and 160-MVA generators. The results obtained show the possibility of detecting internal changes in rotating-machine insulation during the lifetime of the machine itself and the use of the data obtained for a proper diagnostic
Keywords :
computerised instrumentation; machine insulation; partial discharges; synchronous generators; 70 to 160 MVA; HV generators; PDAD; diagnostic technology; field experiences; lifetime; monitoring; multiprocessor-based instrumentation; partial-discharge amplitude distributions; partial-discharge detection; rotating-machine insulation; synchronous generators; Fault detection; Fault location; Frequency; Histograms; Instruments; Insulation; Monitoring; Partial discharges; Power generation; Synchronous generators;
Conference_Titel :
Electrical Insulation, 1990., Conference Record of the 1990 IEEE International Symposium on
Conference_Location :
Toronto, Ont.
DOI :
10.1109/ELINSL.1990.109725
