NDLI: Measurements of slot partial discharges with an antenna during accelerated aging

Content Provider	IEEE Xplore Digital Library
Author	Levesque, M. Hudon, C. Belec, M. David, E.
Copyright Year	2009
Description	Author affiliation: Institut de recherche d'Hydro-Québec, IREQ, 1800 boul. Lionel-Boulet, Varennes, J3X 1S1, Canada (Hudon, C.; Belec, M.) \|\| École de technologie supérieure de Montréal, 1100 ouest Notre-Dame, Québec, H3C 1K3, Canada (Levesque, M.; David, E.)
Abstract	A long-term aging experiment is currently under way on six stator bars subjected to slot partial discharges (PD) activity under electrical, thermal and mechanical stresses. Slot PD were induced on each bar by abrading a portion of their semi-conductive coating. All bars were subjected to accelerated aging at twice their nominal voltage. Two bars were only electrically stressed, two others were electrically and thermally stressed and the last two were electrically, thermally and mechanically stressed. It was noted that the evolution of slot PD was different for each kind of stress. In order to understand those differences, periodic measurements as a function of the aging time were conducted using a directional antenna to detect the electromagnetic radiated signal from each specific slot PD site. The results show the evolution of slot PD activity for the different stress conditions.
Starting Page	458
Ending Page	462
File Size	586659
Page Count	5
File Format	PDF
ISBN	9781424439157
DOI	10.1109/EIC.2009.5166390
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-05-31
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Antenna measurements Partial discharges Slot antennas Accelerated aging Thermal stresses Stator bars Coatings Voltage Time measurement Electromagnetic measurements
Content Type	Text
Resource Type	Article

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Evolution of Slot Partial Discharges under Electrical, Thermal and Mechanical Stresses

Multistress aging of high voltage stator bars

Identification and detection of slot discharges during accelerated aging tests

Aging of stator bars exposed to end arm discharges

Comparison of discharges measured from a generator's terminals and from an antenna in front of the slots

Laboratory studies of slot discharges on stator bars

Study of slot partial discharges in air-cooled generators

Partial Discharge Analysis During Accelerated Aging Tests For The Optimization Of HV Electrical Machine Insulation

Examples of stator winding insulation deterioration in new generators

Measurements of slot partial discharges with an antenna during accelerated aging

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Aging of stator bars exposed to end arm discharges

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Laboratory studies of slot discharges on stator bars

Study of slot partial discharges in air-cooled generators

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