Title :
Method for unambiguous recognition of slot discharge in rotating machines
Author :
Fuhr, J. ; Haessig, M. ; Kraenkel, D. ; Bruehlmeier, P.
Author_Institution :
ASEA Brown Boveri Corp. Res., Baden, Switzerland
Abstract :
A procedure which allows one to detect and localize dangerous slot discharges at a very early state is described. This procedure for evaluating the aging state of the insulating system in rotating machines consists of a sequence of steps with increasing complexity of the diagnostic tools and also with increasing cost for the steps to be performed. The decision to proceed with the next step is mainly based on the experience of the engineers involved in the diagnostics. It is pointed out that more field experience with this procedure is necessary to build up a knowledge base to allow fast and correct analysis of the results obtained at each step of the procedure. Typical results obtained with on-site measurements on power generators are presented
Keywords :
fault location; machine insulation; maintenance engineering; aging state; early detection method; field experience; increasing complexity; increasing cost; on-site measurements; power generators; rotating machines; sequence of steps; slot discharge detection; unambiguous recognition of slot discharge; Aging; Chemicals; Dielectrics and electrical insulation; Partial discharges; Performance analysis; Power generation; Power transformer insulation; Rotating machines; Stator windings; Thermal stresses;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1990. Annual Report., Conference on
Conference_Location :
Pocono Manor, PA
DOI :
10.1109/CEIDP.1990.201363
