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A monitoring and diagnostic technology, based on PDAD detection and analysis, for HV generators

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5 Author(s)
Boscolo, A. ; DEEI, Trieste Univ., Italy ; Contin, A. ; Rabach, G. ; Tosato, F.
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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

Published in:

Electrical Insulation, 1990., Conference Record of the 1990 IEEE International Symposium on

Date of Conference:

3-6 Jun 1990