NDLI: Characteristics of noise and interphasal PD pulses in operating stator windings

Content Provider	IEEE Xplore Digital Library
Author	Stone, G.C. Campbell, S.R. Sedding, H.G.
Copyright Year	2011
Description	Author affiliation: Iris Power - Qualitrol, Toronto, Ontario, Canada (Stone, G.C.) \|\| Iris Power-Qualitrol, Toronto, Ontario, Canada (Campbell, S.R.) \|\| Kinectrics, Toronto, Ontario, Canada (Sedding, H.G.)
Abstract	Online partial discharge measurement in machines requires effective electrical noise suppression to reduce the risk of false indications of stator winding insulation problems. Many noise suppression techniques have been proposed and implemented over the years. This paper examines the method of suppressing noise using 3 phase synchronous (i.e. simultaneous) detection. Known noise pulses were recorded on three phases and they were contrasted with pulses from phase-to-ground PD in the stator slot or phase-to-phase PD between coils in the stator endwinding. Experiments indicated that interphasal PD produces strong pulses on 2 of the 3 phases. In contrast, phase-to-ground PD and noise caused by sparking in one phase of a generator output bus create a dominant pulse in one phase only. With all three types of situations, there may be significant cross-coupling to the other phase(s).
Starting Page	15
Ending Page	19
File Size	1114016
Page Count	5
File Format	PDF
ISBN	9781457702785
e-ISBN	9781457702792
e-ISBN	9781457702778
DOI	10.1109/EIC.2011.5996106
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-05
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Partial discharges Noise Stator windings Sensors Oscilloscopes Power systems synchronous detection partial discharge stator windings rotating machines
Content Type	Text
Resource Type	Article

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